You can't have both background images and truetype fonts in the same // image until these bugs has been fixed in GD 2.01 DEFINE('USE_TRUECOLOR',true); //------------------------------------------------------------------ // Constants which are used as parameters for the method calls //------------------------------------------------------------------ // TTF Font families DEFINE("FF_COURIER",10); DEFINE("FF_VERDANA",11); DEFINE("FF_TIMES",12); DEFINE("FF_HANDWRT",13); DEFINE("FF_COMIC",14); DEFINE("FF_ARIAL",15); DEFINE("FF_BOOK",16); DEFINE("FF_VERA",17); // TTF Font styles DEFINE("FS_NORMAL",1); DEFINE("FS_BOLD",2); DEFINE("FS_ITALIC",3); DEFINE("FS_BOLDIT",4); //Definitions for internal font, new style DEFINE("FF_FONT0",1); DEFINE("FF_FONT1",2); DEFINE("FF_FONT2",4); //Definitions for internal font, old style // (Only defined here to be able to generate an error mesage // when used) DEFINE("FONT0",99); // Deprecated from 1.2 DEFINE("FONT1",98); // Deprecated from 1.2 DEFINE("FONT1_BOLD",97); // Deprecated from 1.2 DEFINE("FONT2",96); // Deprecated from 1.2 DEFINE("FONT2_BOLD",95); // Deprecated from 1.2 // Tick density DEFINE("TICKD_DENSE",1); DEFINE("TICKD_NORMAL",2); DEFINE("TICKD_SPARSE",3); DEFINE("TICKD_VERYSPARSE",4); // Side for ticks and labels. DEFINE("SIDE_LEFT",-1); DEFINE("SIDE_RIGHT",1); DEFINE("SIDE_DOWN",-1); DEFINE("SIDE_UP",1); // Legend type stacked vertical or horizontal DEFINE("LEGEND_VERT",0); DEFINE("LEGEND_HOR",1); // Mark types for plot marks DEFINE("MARK_SQUARE",1); DEFINE("MARK_UTRIANGLE",2); DEFINE("MARK_DTRIANGLE",3); DEFINE("MARK_DIAMOND",4); DEFINE("MARK_CIRCLE",5); DEFINE("MARK_FILLEDCIRCLE",6); DEFINE("MARK_CROSS",7); DEFINE("MARK_STAR",8); DEFINE("MARK_X",9); // Styles for gradient color fill DEFINE("GRAD_VER",1); DEFINE("GRAD_HOR",2); DEFINE("GRAD_MIDHOR",3); DEFINE("GRAD_MIDVER",4); DEFINE("GRAD_CENTER",5); DEFINE("GRAD_WIDE_MIDVER",6); DEFINE("GRAD_WIDE_MIDHOR",7); // Inline defines DEFINE("INLINE_YES",1); DEFINE("INLINE_NO",0); // Format for background images DEFINE("BGIMG_FILLPLOT",1); DEFINE("BGIMG_FILLFRAME",2); DEFINE("BGIMG_COPY",3); DEFINE("BGIMG_CENTER",4); // Depth of objects DEFINE("DEPTH_BACK",0); DEFINE("DEPTH_FRONT",1); // Direction DEFINE("VERTICAL",1); DEFINE("HORIZONTAL",0); // Constants for types of static bands in plot area DEFINE("BAND_RDIAG",1); // Right diagonal lines DEFINE("BAND_LDIAG",2); // Left diagonal lines DEFINE("BAND_SOLID",3); // Solid one color DEFINE("BAND_LVERT",4); // Vertical lines DEFINE("BAND_LHOR",5); // Horizontal lines DEFINE("BAND_VLINE",4); // Vertical lines DEFINE("BAND_HLINE",5); // Horizontal lines DEFINE("BAND_3DPLANE",6); // "3D" Plane DEFINE("BAND_HVCROSS",7); // Vertical/Hor crosses DEFINE("BAND_DIAGCROSS",8); // Diagonal crosses // // First of all set up a default error handler // //============================================================= // The default trivial error handler. // A production quality error handler should generate an image // containing the text of the error. //============================================================= class JpGraphErrObject { function JpGraphErrObject() { // Empty. Reserved for future use } // If aHalt is true then execution can't continue. Typical used for // fatal errors function Raise($aMsg,$aHalt=true) { if( $aHalt ) die($aMsg); else echo $aMsg."
";
}
}
//
// A wrapper class that is used to access the specified error object
// (to hide the global error parameter and avoid having a GLOBAL directive
// in all methods.
//
class JpGraphError {
function Install($aErrObject) {
GLOBAL $__jpg_err;
$__jpg_err = $aErrObject;
}
function Raise($aMsg,$aHalt=true){
GLOBAL $__jpg_err;
$tmp = new $__jpg_err;
$tmp->Raise($aMsg,$aHalt);
}
}
//
// ... and install the default error handler
//
JpGraphError::Install("JpGraphErrObject");
//
//Check if there were any warnings, perhaps some wrong includes by the
//user
//
if( isset($GLOBALS['php_errormsg']) ) {
JpGraphError::Raise("General PHP error:
If this is not the case you might have stumbled upon a bug in JpGraph.
Please report this and if possible include the data that caused the
problem.");
}
$this->major_step=$aMajStep;
$this->minor_step=$aMinStep;
$this->is_set = true;
}
// Draw linear ticks
function Stroke(&$img,&$scale,$pos) {
$maj_step_abs = $scale->scale_factor*$this->major_step;
$min_step_abs = $scale->scale_factor*$this->minor_step;
if( $min_step_abs==0 || $maj_step_abs==0 )
JpGraphError::Raise("JpGraph Error: A plot has an illegal scale. This could for example be
that you are trying to use text autoscaling to draw a line plot with only one point
or similair abnormality (a line needs two points!).");
$limit = $scale->scale_abs[1];
$nbrmajticks=floor(1.000001*(($scale->GetMaxVal()-$scale->GetMinVal())/$this->major_step))+1;
$first=0;
// If precision hasn't been specified set it to a sensible value
if( $this->precision==-1 ) {
$t = log10($this->minor_step);
if( $t > 0 )
$precision = 0;
else
$precision = -floor($t);
}
else
$precision = $this->precision;
$img->SetLineWeight($this->weight);
// Handle ticks on X-axis
if( $scale->type == "x" ) {
// Draw the major tick marks
$yu = $pos - $this->direction*$this->GetMajTickAbsSize();
// TODO: Add logic to set label_offset for text labels
$label = (float)$scale->GetMinVal()+$this->text_label_start+$this->label_offset;
$start_abs=$scale->scale_factor*$this->text_label_start;
$nbrmajticks=ceil(($scale->GetMaxVal()-$scale->GetMinVal()-$this->text_label_start )/$this->major_step)+1;
for( $i=0; $label<=$scale->GetMaxVal()+$this->label_offset; ++$i ) {
$x=$scale->scale_abs[0]+$start_abs+$i*$maj_step_abs+$this->xlabel_offset*$min_step_abs;
$this->maj_ticklabels_pos[$i]=ceil($x);
// Apply format
if( $this->label_formfunc != "" ) {
$f=$this->label_formfunc;
$l = $f($label);
}
elseif( $this->label_formatstr != "" )
$l = sprintf($this->label_formatstr,$label);
else
$l = sprintf("%01.".$precision."f",round($label,$precision));
if( ($this->supress_zerolabel && ($l + 0)==0) ||
($this->supress_first && $i==0) ||
($this->supress_last && $i==$nbrmajticks-1) )
$l="";
$this->maj_ticks_label[$i]=$l;
$label+=$this->major_step;
// The x-position of the tick marks can be different from the labels.
// Note that we record the tick position (not the label) so that the grid
// happen upon tick marks and not labels.
$xtick=$scale->scale_abs[0]+$start_abs+$i*$maj_step_abs+$this->xtick_offset*$min_step_abs;
$this->maj_ticks_pos[$i]=ceil($xtick);
if(!($this->xtick_offset > 0 && $i==$nbrmajticks-1) && !$this->supress_tickmarks) {
if( $this->majcolor!="" ) $img->PushColor($this->majcolor);
$img->Line($xtick,$pos,$xtick,$yu);
if( $this->majcolor!="" ) $img->PopColor();
}
}
// Draw the minor tick marks
$yu = $pos - $this->direction*$this->GetMinTickAbsSize();
$label = $scale->GetMinVal();
for( $i=0,$x=$scale->scale_abs[0]; $x<$limit; ++$i ) {
$x=$scale->scale_abs[0]+$i*$min_step_abs;
$this->ticks_pos[]=$x;
$this->ticks_label[]=$label;
$label+=$this->minor_step;
if( !$this->supress_tickmarks && !$this->supress_minor_tickmarks) {
if( $this->mincolor!="" ) $img->PushColor($this->mincolor);
$img->Line($x,$pos,$x,$yu);
if( $this->mincolor!="" ) $img->PopColor();
}
}
}
elseif( $scale->type == "y" ) {
// Draw the major tick marks
$xr = $pos + $this->direction*$this->GetMajTickAbsSize();
$label = $scale->GetMinVal();
for( $i=0; $i<$nbrmajticks; ++$i) {
$y=$scale->scale_abs[0]+$i*$maj_step_abs;
// THe following two lines might seem to be unecessary but they are not!
// The reason being that for X-axis we separate the position of the labels
// and the tick marks which we don't do for the Y-axis.
// We therefore need to make sure both arrays are corcectly filled
// since Axis::StrokeLabels() uses the label positions and Grid::Stroke() uses
// the tick positions.
$this->maj_ticklabels_pos[$i]=$y;
$this->maj_ticks_pos[$i]=$y;
if( $this->label_formfunc != "" ) {
$f=$this->label_formfunc;
$l = $f($label);
}
elseif( $this->label_formatstr != "" )
$l = sprintf($this->label_formatstr,$label);
else
$l = sprintf("%01.".$precision."f",round($label,$precision));
if( ($this->supress_zerolabel && ($l + 0)==0) ||
($this->supress_first && $i==0) ||
($this->supress_last && $i==$nbrmajticks-1) )
$l="";
$this->maj_ticks_label[$i]=$l;
$label+=$this->major_step;
if( !$this->supress_tickmarks ) {
if( $this->majcolor!="" ) $img->PushColor($this->majcolor);
$img->Line($pos,$y,$xr,$y);
if( $this->majcolor!="" ) $img->PopColor();
}
}
// Draw the minor tick marks
$xr = $pos + $this->direction*$this->GetMinTickAbsSize();
$label = $scale->GetMinVal();
for( $i=0,$y=$scale->scale_abs[0]; $y>=$limit; ) {
$this->ticks_pos[$i]=$y;
$this->ticks_label[$i]=$label;
$label+=$this->minor_step;
if( !$this->supress_tickmarks && !$this->supress_minor_tickmarks) {
if( $this->mincolor!="" ) $img->PushColor($this->mincolor);
$img->Line($pos,$y,$xr,$y);
if( $this->mincolor!="" ) $img->PopColor();
}
++$i;
$y=$scale->scale_abs[0]+$i*$min_step_abs;
}
}
}
//---------------
// PRIVATE METHODS
// Spoecify the offset of the displayed tick mark with the tick "space"
// Legal values for $o is [0,1] used to adjust where the tick marks and label
// should be positioned within the major tick-size
// $lo specifies the label offset and $to specifies the tick offset
// this comes in handy for example in bar graphs where we wont no offset for the
// tick but have the labels displayed halfway under the bars.
function SetXLabelOffset($aLabelOff,$aTickOff=-1) {
$this->xlabel_offset=$aLabelOff;
if( $aTickOff==-1 ) // Same as label offset
$this->xtick_offset=$aLabelOff;
else
$this->xtick_offset=$aTickOff;
if( $aLabelOff>0 )
$this->SupressLast(); // The last tick wont fit
}
// Which tick label should we start with?
function SetTextLabelStart($aTextLabelOff) {
$this->text_label_start=$aTextLabelOff;
}
} // Class
//===================================================
// CLASS LinearScale
// Description: Handle linear scaling between screen and world
//===================================================
class LinearScale {
var $scale=array(0,0);
var $scale_abs=array(0,0);
var $scale_factor; // Scale factor between world and screen
var $world_size; // Plot area size in world coordinates
var $world_abs_size; // Plot area size in pixels
var $off; // Offset between image edge and plot area
var $type; // is this x or y scale ?
var $ticks=null; // Store ticks
var $autoscale_min=false; // Forced minimum value, useful to let user force 0 as start and autoscale max
var $gracetop=0,$gracebottom=0;
var $intscale=false; // Restrict autoscale to integers
//---------------
// CONSTRUCTOR
function LinearScale($aMin=0,$aMax=0,$aType="y") {
assert($aType=="x" || $aType=="y" );
assert($aMin<=$aMax);
$this->type=$aType;
$this->scale=array($aMin,$aMax);
$this->world_size=$aMax-$aMin;
$this->ticks = new LinearTicks();
}
//---------------
// PUBLIC METHODS
// Second phase constructor
function Init(&$aImg) {
$this->InitConstants($aImg);
// We want image to notify us when the margins changes so we
// can recalculate the constants.
// PHP <= 4.04 BUGWARNING: IT IS IMPOSSIBLE TO DO THIS IN THE CONSTRUCTOR
// SINCE (FOR SOME REASON) IT IS IMPOSSIBLE TO PASS A REFERENCE
// TO 'this' INSTEAD IT WILL ADD AN ANONYMOUS COPY OF THIS OBJECT WHICH WILL
// GET ALL THE NOTIFICATIONS. (This took a while to track down...)
// Add us as an observer to class Image
$aImg->AddObserver("InitConstants",$this);
}
// Check if scale is set or if we should autoscale
// We should do this is either scale or ticks has not been set
function IsSpecified() {
if( $this->GetMinVal()==$this->GetMaxVal() ) { // Scale not set
return false;
}
return true;
}
// Set the minimum data value when the autoscaling is used.
// Usefull if you want a fix minimum (like 0) but automtic maximum
function SetAutoMin($aMin) {
$this->autoscale_min=$aMin;
}
// Specify scale "grace" value (top and bottom)
function SetGrace($aGraceTop,$aGraceBottom=0) {
if( $aGraceTop<0 || $aGraceBottom < 0 )
JpGraphError::Raise("JpGraph Error: Grace must be larger then 0");
$this->gracetop=$aGraceTop;
$this->gracebottom=$aGraceBottom;
}
// Get the minimum value in the scale
function GetMinVal() {
return $this->scale[0];
}
// get maximum value for scale
function GetMaxVal() {
return $this->scale[1];
}
// Specify a new min/max value for sclae
function Update(&$aImg,$aMin,$aMax) {
$this->scale=array($aMin,$aMax);
$this->world_size=$aMax-$aMin;
$this->InitConstants($aImg);
}
// Translate between world and screen
function Translate($aCoord) {
return $this->off+round(($aCoord*1.0 - $this->GetMinVal()) * $this->scale_factor,0);
}
// Relative translate (don't include offset) usefull when we just want
// to know the relative position (in pixels) on the axis
function RelTranslate($aCoord) {
return round(($aCoord*1.0 - $this->GetMinVal()) * $this->scale_factor,0);
}
// Restrict autoscaling to only use integers
function SetIntScale($aIntScale=true) {
$this->intscale=$aIntScale;
}
// Calculate an integer autoscale
function IntAutoScale(&$img,$min,$max,$maxsteps,$majend=true) {
// Make sure limits are integers
$min=floor($min);
$max=ceil($max);
if( abs($min-$max)==0 ) {
--$min; ++$max;
}
$gracetop=ceil(($this->gracetop/100.0))*abs($max-$min);
$gracebottom=ceil(($this->gracebottom/100.0))*abs($max-$min);
if( is_numeric($this->autoscale_min) ) {
$min = ceil($this->autoscale_min);
if( abs($min-$max ) == 0 ) {
++$max;
--$min;
}
}
$min -= $gracebottom;
$max += $gracetop;
// First get tickmarks as multiples of 1, 10, ...
list($num1steps,$adj1min,$adj1max,$maj1step) =
$this->IntCalcTicks($maxsteps,$min,$max,1);
// Then get tick marks as 2:s 2, 20, ...
list($num2steps,$adj2min,$adj2max,$maj2step) =
$this->IntCalcTicks($maxsteps,$min,$max,5);
// Then get tickmarks as 5:s 5, 50, 500, ...
list($num5steps,$adj5min,$adj5max,$maj5step) =
$this->IntCalcTicks($maxsteps,$min,$max,2);
// Check to see whichof 1:s, 2:s or 5:s fit better with
// the requested number of major ticks
$match1=abs($num1steps-$maxsteps);
$match2=abs($num2steps-$maxsteps);
if( $maj5step > 1 )
$match5=abs($num5steps-$maxsteps);
else
$match5=1000000; // Dummy high value
// Compare these three values and see which is the closest match
// We use a 0.6 weight to gravitate towards multiple of 5:s
if( $match1 < $match2 ) {
if( $match1 < $match5 )
$r=1;
else
$r=3;
}
else {
if( $match2 < $match5 )
$r=2;
else
$r=3;
}
// Minsteps are always the same as maxsteps for integer scale
switch( $r ) {
case 1:
$this->Update($img,$adj1min,$adj1max);
$this->ticks->Set($maj1step,$maj1step);
break;
case 2:
$this->Update($img,$adj2min,$adj2max);
$this->ticks->Set($maj2step,$maj2step);
break;
case 3:
$this->Update($img,$adj5min,$adj5max);
$this->ticks->Set($maj5step,$maj2step);
break;
}
}
// Calculate autoscale. Used if user hasn't given a scale and ticks
// $maxsteps is the maximum number of major tickmarks allowed.
function AutoScale(&$img,$min,$max,$maxsteps,$majend=true) {
if( $this->intscale ) {
$this->IntAutoScale($img,$min,$max,$maxsteps,$majend);
return;
}
if( abs($min-$max) < 0.00001 ) {
// We need some difference to be able to autoscale
// make it 5% above and 5% below value
if( $min==0 && $max==0 ) { // Special case
$min=-1; $max=1;
}
else {
$delta = abs($max-$min)*0.05;
$min -= $delta;
$max += $delta;
}
}
$gracetop=($this->gracetop/100.0)*abs($max-$min);
$gracebottom=($this->gracebottom/100.0)*abs($max-$min);
if( is_numeric($this->autoscale_min) ) {
$min = $this->autoscale_min;
if( abs($min-$max ) < 0.00001 )
$max *= 1.05;
}
$min -= $gracebottom;
$max += $gracetop;
// First get tickmarks as multiples of 0.1, 1, 10, ...
list($num1steps,$adj1min,$adj1max,$min1step,$maj1step) =
$this->CalcTicks($maxsteps,$min,$max,1,2);
// Then get tick marks as 2:s 0.2, 2, 20, ...
list($num2steps,$adj2min,$adj2max,$min2step,$maj2step) =
$this->CalcTicks($maxsteps,$min,$max,5,2);
// Then get tickmarks as 5:s 0.05, 0.5, 5, 50, ...
list($num5steps,$adj5min,$adj5max,$min5step,$maj5step) =
$this->CalcTicks($maxsteps,$min,$max,2,5);
// Check to see whichof 1:s, 2:s or 5:s fit better with
// the requested number of major ticks
$match1=abs($num1steps-$maxsteps);
$match2=abs($num2steps-$maxsteps);
$match5=abs($num5steps-$maxsteps);
// Compare these three values and see which is the closest match
// We use a 0.8 weight to gravitate towards multiple of 5:s
$r=$this->MatchMin3($match1,$match2,$match5,0.8);
switch( $r ) {
case 1:
$this->Update($img,$adj1min,$adj1max);
$this->ticks->Set($maj1step,$min1step);
break;
case 2:
$this->Update($img,$adj2min,$adj2max);
$this->ticks->Set($maj2step,$min2step);
break;
case 3:
$this->Update($img,$adj5min,$adj5max);
$this->ticks->Set($maj5step,$min5step);
break;
}
}
//---------------
// PRIVATE METHODS
// This method recalculates all constants that are depending on the
// margins in the image. If the margins in the image are changed
// this method should be called for every scale that is registred with
// that image. Should really be installed as an observer of that image.
function InitConstants(&$img) {
if( $this->type=="x" ) {
$this->world_abs_size=$img->width - $img->left_margin - $img->right_margin;
$this->off=$img->left_margin;
$this->scale_factor = 0;
if( $this->world_size > 0 )
$this->scale_factor=$this->world_abs_size/($this->world_size*1.0);
}
else { // y scale
$this->world_abs_size=$img->height - $img->top_margin - $img->bottom_margin;
$this->off=$img->top_margin+$this->world_abs_size;
$this->scale_factor = 0;
if( $this->world_size > 0 )
$this->scale_factor=-$this->world_abs_size/($this->world_size*1.0);
}
$size = $this->world_size * $this->scale_factor;
$this->scale_abs=array($this->off,$this->off + $size);
}
// Initialize the conversion constants for this scale
// This tries to pre-calculate as much as possible to speed up the
// actual conversion (with Translate()) later on
// $start =scale start in absolute pixels (for x-scale this is an y-position
// and for an y-scale this is an x-position
// $len =absolute length in pixels of scale
function SetConstants($aStart,$aLen) {
$this->world_abs_size=$aLen;
$this->off=$aStart;
if( $this->world_size<=0 ) {
JpGraphError::Raise("JpGraph Fatal Error:
If there is still a problem try downgrading the quality of
the background image to use a smaller pallete to leave some
entries for your graphs. You should try to limit the number
of colors in your background image to 64.
If there is still problem set the constant
Unfortunately there is not much JpGraph can do about this
since the palette size is a limitation of current graphic format and
what the underlying GD library suppports.");
}
return $this->current_color;
}
function PushColor($color) {
if( $color != "" ) {
$this->colorstack[$this->colorstackidx]=$this->current_color_name;
$this->colorstack[$this->colorstackidx+1]=$this->current_color;
$this->colorstackidx+=2;
$this->SetColor($color);
}
}
function PopColor() {
if($this->colorstackidx<0)
JpGraphError::Raise("JpGraph Error: Negative Color stack index. Unmatched call to PopColor()");
$this->current_color=$this->colorstack[--$this->colorstackidx];
$this->current_color_name=$this->colorstack[--$this->colorstackidx];
}
// Why this duplication? Because this way we can call this method
// for any image and not only the current objsct
function AdjSat($sat) { $this->_AdjSat($this->img,$sat); }
function _AdjSat($img,$sat) {
$nbr = imagecolorstotal ($img);
for( $i=0; $i<$nbr; ++$i ) {
$colarr = imagecolorsforindex ($img,$i);
$rgb[0]=$colarr["red"];
$rgb[1]=$colarr["green"];
$rgb[2]=$colarr["blue"];
$rgb = $this->AdjRGBSat($rgb,$sat);
imagecolorset ($img, $i, $rgb[0], $rgb[1], $rgb[2]);
}
}
function AdjBrightContrast($bright,$contr=0) {
$this->_AdjBrightContrast($this->img,$bright,$contr);
}
function _AdjBrightContrast($img,$bright,$contr=0) {
if( $bright < -1 || $bright > 1 || $contr < -1 || $contr > 1 )
JpGraphError::Raise("JpGraph Error: Parameters for brightness and Contrast out of range [-1,1]");
$nbr = imagecolorstotal ($img);
for( $i=0; $i<$nbr; ++$i ) {
$colarr = imagecolorsforindex ($img,$i);
$r = $this->AdjRGBBrightContrast($colarr["red"],$bright,$contr);
$g = $this->AdjRGBBrightContrast($colarr["green"],$bright,$contr);
$b = $this->AdjRGBBrightContrast($colarr["blue"],$bright,$contr);
imagecolorset ($img, $i, $r, $g, $b);
}
}
// Private helper function for adj sat
// Adjust saturation for RGB array $u. $sat is a value between -1 and 1
// Note: Due to GD inability to handle true color the RGB values are only between
// 8 bit. This makes saturation quite sensitive for small increases in parameter sat.
//
// Tip: To get a grayscale picture set sat=-100, values <-100 changes the colors
// to it's complement.
//
// Implementation note: The saturation is implemented directly in the RGB space
// by adjusting the perpendicular distance between the RGB point and the "grey"
// line (1,1,1). Setting $sat>0 moves the point away from the line along the perp.
// distance and a negative value moves the point closer to the line.
// The values are truncated when the color point hits the bounding box along the
// RGB axis.
// DISCLAIMER: I'm not 100% sure this is he correct way to implement a color
// saturation function in RGB space. However, it looks ok and has the expected effect.
function AdjRGBSat($rgb,$sat) {
// TODO: Should be moved to the RGB class
// Grey vector
$v=array(1,1,1);
// Dot product
$dot = $rgb[0]*$v[0]+$rgb[1]*$v[1]+$rgb[2]*$v[2];
// Normalize dot product
$normdot = $dot/3; // dot/|v|^2
// Direction vector between $u and its projection onto $v
for($i=0; $i<3; ++$i)
$r[$i] = $rgb[$i] - $normdot*$v[$i];
// Adjustment factor so that sat==1 sets the highest RGB value to 255
if( $sat > 0 ) {
$m=0;
for( $i=0; $i<3; ++$i) {
if( sign($r[$i]) == 1 && $r[$i]>0)
$m=max($m,(255-$rgb[$i])/$r[$i]);
}
$tadj=$m;
}
else
$tadj=1;
$tadj = $tadj*$sat;
for($i=0; $i<3; ++$i) {
$un[$i] = round($rgb[$i] + $tadj*$r[$i]);
if( $un[$i]<0 ) $un[$i]=0; // Truncate color when they reach 0
if( $un[$i]>255 ) $un[$i]=255;// Avoid potential rounding error
}
return $un;
}
// Private helper function for AdjBrightContrast
function AdjRGBBrightContrast($rgb,$bright,$contr) {
// TODO: Should be moved to the RGB class
// First handle contrast, i.e change the dynamic range around grey
if( $contr <= 0 ) {
// Decrease contrast
$adj = abs($rgb-128) * (-$contr);
if( $rgb < 128 ) $rgb += $adj;
else $rgb -= $adj;
}
else { // $contr > 0
// Increase contrast
if( $rgb < 128 ) $rgb = $rgb - ($rgb * $contr);
else $rgb = $rgb + ((255-$rgb) * $contr);
}
// Add (or remove) various amount of white
$rgb += $bright*255;
$rgb=min($rgb,255);
$rgb=max($rgb,0);
return $rgb;
}
function SetLineWeight($weight) {
$this->line_weight = $weight;
}
function SetStartPoint($x,$y) {
$this->lastx=$x;
$this->lasty=$y;
}
function Arc($cx,$cy,$w,$h,$s,$e) {
imagearc($this->img,$cx,$cy,$w,$h,$s,$e,$this->current_color);
}
function FilledArc($cx,$cy,$w,$h,$s,$e) {
if( $GLOBALS['gd2'] == false ) {
JpGraphError::Raise("JpGraph Error: This plot type requires GD 2.x or later");
die();
}
imagefilledarc($this->img,$cx,$cy,$w,$h,$s,$e,$this->current_color,IMG_ARC_PIE);
}
function FilledCakeSlice($cx,$cy,$w,$h,$s,$e) {
$this->CakeSlice($cx,$cy,$w,$h,$s,$e,$this->current_color_name);
}
function CakeSlice($cx,$cy,$w,$h,$s,$e,$fillcolor="",$arccolor="",$stepping=2500) {
// Calculate a polygon approximation
$p[0] = $cx;
$p[1] = $cy;
// Heuristic on how many polygons we need to make the
// arc look good
$numsteps = round(8 * abs($e-$s) * ($w*$w+$h*$h)/$stepping);
//echo "Numsteps=$numsteps
".$GLOBALS['php_errormsg']);
}
//
// Check what version of the GD library is being used
//
if(function_exists('imagecopyresampled') ) {
$gd2 = true;
$copyfunc = "imagecopyresampled";
} elseif(function_exists('imagecopyresized')) {
$copyfunc = "imagecopyresized";
$gd2 = false;
}
else {
JpGraphError::Raise("JpGraph Error: Your PHP installation does not
have the required GD library.
Please see the PHP documentation on how to install and enable the GD library.");
}
// Usefull mathematical function
function sign($a) {if( $a>=0) return 1; else return -1;}
// Utility function to generate an image name based on the filename we
// are running from AND assuming we use auto detection of graphic format
// (top level), i.e it is safe to call this function
// from a script that uses JpGraph
function GenImgName() {
$supported = imagetypes();
if( $supported & IMG_PNG )
$img_format="png";
elseif( $supported & IMG_GIF )
$img_format="gif";
elseif( $supported & IMG_JPG )
$img_format="jpeg";
if( !isset($_SERVER['PHP_SELF']) )
JpGraphError::Raise("JpGraph Error: Can't access PHP_SELF, PHP global variable. You can't run PHP from command line
if you want to use the 'auto' naming of cache or image files.");
$fname=basename($_SERVER['PHP_SELF']);
// Replace the ".php" extension with the image format extension
return substr($fname,0,strlen($fname)-4).".".$img_format;
}
class LanguageConv {
// Translate iso encoding to unicode
function iso2uni ($isoline){
for ($i=0; $i < strlen($isoline); $i++){
$thischar=substr($isoline,$i,1);
$charcode=ord($thischar);
$uniline.=($charcode>175) ? "" . (1040+($charcode-176)). ";" : $thischar;
}
return $uniline;
}
function ToCyrillic($aTxt) {
$koistring = $aTxt;
$isostring = convert_cyr_string($koistring, "k", "i");
$unistring = LanguageConv::iso2uni($isostring);
$this->t = $unistring;
return $aTxt;
}
}
//===================================================
// CLASS JpgTimer
// Description: General timing utility class to handle
// timne measurement of generating graphs. Multiple
// timers can be started by pushing new on a stack.
//===================================================
class JpgTimer {
var $start;
var $idx;
//---------------
// CONSTRUCTOR
function JpgTimer() {
$this->idx=0;
}
//---------------
// PUBLIC METHODS
// Push a new timer start on stack
function Push() {
list($ms,$s)=explode(" ",microtime());
$this->start[$this->idx++]=floor($ms*1000) + 1000*$s;
}
// Pop the latest timer start and return the diff with the
// current time
function Pop() {
assert($this->idx>0);
list($ms,$s)=explode(" ",microtime());
$etime=floor($ms*1000) + (1000*$s);
$this->idx--;
return $etime-$this->start[$this->idx];
}
} // Class
//===================================================
// CLASS Graph
// Description: Main class to handle graphs
//===================================================
class Graph {
var $cache=null; // Cache object (singleton)
var $img=null; // Img object (singleton)
var $plots=array(); // Array of all plot object in the graph (for Y 1 axis)
var $y2plots=array();// Array of all plot object in the graph (for Y 2 axis)
var $xscale=null; // X Scale object (could be instance of LinearScale or LogScale
var $yscale=null,$y2scale=null;
var $cache_name; // File name to be used for the current graph in the cache directory
var $xgrid=null; // X Grid object (linear or logarithmic)
var $ygrid=null,$y2grid=null; //dito for Y
var $doframe=true,$frame_color=array(0,0,0), $frame_weight=1; // Frame around graph
var $boxed=false, $box_color=array(0,0,0), $box_weight=1; // Box around plot area
var $doshadow=false,$shadow_width=4,$shadow_color=array(102,102,102); // Shadow for graph
var $xaxis=null; // X-axis (instane of Axis class)
var $yaxis=null, $y2axis=null; // Y axis (instance of Axis class)
var $margin_color=array(198,198,198); // Margin coor of graph
var $plotarea_color=array(255,255,255); // Plot area color
var $title,$subtitle; // Title and subtitle text object
var $axtype="linlin"; // Type of axis
var $xtick_factor; // Factot to determine the maximum number of ticks depending on the plot with
var $texts=null; // Text object to ge shown in the graph
var $lines=null;
var $bands=null;
var $text_scale_off=0; // Text scale offset in world coordinates
var $background_image="",$background_image_type=-1,$background_image_format="png";
var $background_image_bright=0,$background_image_contr=0,$background_image_sat=0;
var $image_bright=0, $image_contr=0, $image_sat=0;
var $inline;
var $showcsim=0,$csimcolor="red"; //debug stuff, draw the csim boundaris on the image if <>0
var $grid_depth=DEPTH_BACK; // Draw grid under all plots as default
//---------------
// CONSTRUCTOR
// aWIdth Width in pixels of image
// aHeight Height in pixels of image
// aCachedName Name for image file in cache directory
// aTimeOut Timeout in minutes for image in cache
// aInline If true the image is streamed back in the call to Stroke()
// If false the image is just created in the cache
function Graph($aWidth=300,$aHeight=200,$aCachedName="",$aTimeOut=0,$aInline=true) {
// If timing is used create a new timing object
if( BRAND_TIMING ) {
global $tim;
$tim = new JpgTimer();
$tim->Push();
}
// Automtically generate the image file name based on the name of the script that
// generates the graph
if( $aCachedName=="auto" )
$aCachedName=GenImgName();
// Should the image be streamed back to the browser or only to the cache?
$this->inline=$aInline;
$this->img = new RotImage($aWidth,$aHeight);
$this->cache = new ImgStreamCache($this->img);
$this->cache->SetTimeOut($aTimeOut);
$this->title = new Text();
$this->subtitle = new Text();
$this->legend = new Legend();
// If the cached version exist just read it directly from the
// cache, stream it back to browser and exit
if( $aCachedName!="" && READ_CACHE && $aInline )
if( $this->cache->GetAndStream($aCachedName) ) {
exit();
}
$this->cache_name = $aCachedName;
$this->SetTickDensity(); // Normal density
}
//---------------
// PUBLIC METHODS
// Should the grid be in front or back of the plot?
function SetGridDepth($aDepth) {
$this->grid_depth=$aDepth;
}
// Specify graph angle 0-360 degrees.
function SetAngle($aAngle) {
$this->img->SetAngle($aAngle);
}
// Add a plot object to the graph
function Add(&$aPlot) {
if( $aPlot == null )
JpGraphError::Raise("JpGraph Error: Graph::Add() You tried to add a null plot to the graph.");
$this->plots[] = &$aPlot;
}
// Add plot to second Y-scale
function AddY2(&$aPlot) {
if( $aPlot == null )
JpGraphError::Raise("JpGraph Error: Graph::AddY2() You tried to add a null plot to the graph.");
$this->y2plots[] = &$aPlot;
}
// Add text object to the graph
function AddText(&$aTxt) {
if( $aTxt == null )
JpGraphError::Raise("JpGraph Error: Graph::AddText() You tried to add a null text to the graph.");
if( is_array($aTxt) ) {
for($i=0; $i
To use
background images with GD 2.x you must enable truecolor by setting the
USE_TRUECOLOR constant to TRUE.
Note: Due to a bug in GD 2.0.1
using any truetype fonts with truecolor images will result in very
poor quality fonts.");
}
$this->background_image = $aFileName;
$this->background_image_type=$aBgType;
$this->background_image_format=$aImgFormat;
}
// Adjust brightness and constrast for background image
function AdjBackgroundImage($aBright,$aContr=0,$aSat=0) {
$this->background_image_bright=$aBright;
$this->background_image_contr=$aContr;
$this->background_image_sat=$aSat;
}
// Adjust brightness and constrast for image
function AdjImage($aBright,$aContr=0,$aSat=0) {
$this->image_bright=$aBright;
$this->image_contr=$aContr;
$this->image_sat=$aSat;
}
// Set a frame around the plot area
function SetBox($aDrawPlotFrame=true,$aPlotFrameColor=array(0,0,0),$aPlotFrameWeight=1) {
$this->boxed = $aDrawPlotFrame;
$this->box_weight = $aPlotFrameWeight;
$this->box_color = $aPlotFrameColor;
}
// Specify color for the plotarea (not the margins)
function SetColor($aColor) {
$this->plotarea_color=$aColor;
}
// Specify color for the margins (all areas outside the plotarea)
function SetMarginColor($aColor) {
$this->margin_color=$aColor;
}
// Set a frame around the entire image
function SetFrame($aDrawImgFrame=true,$aImgFrameColor=array(0,0,0),$aImgFrameWeight=1) {
$this->doframe = $aDrawImgFrame;
$this->frame_color = $aImgFrameColor;
$this->frame_weight = $aImgFrameWeight;
}
// Set the shadow around the whole image
function SetShadow($aShowShadow=true,$aShadowWidth=5,$aShadowColor=array(102,102,102)) {
$this->doshadow = $aShowShadow;
$this->shadow_color = $aShadowColor;
$this->shadow_width = $aShadowWidth;
}
// Specify x,y scale. Note that if you manually specify the scale
// you must also specify the tick distance with a call to Ticks::Set()
function SetScale($aAxisType,$aYMin=1,$aYMax=1,$aXMin=1,$aXMax=1) {
$this->axtype = $aAxisType;
$yt=substr($aAxisType,-3,3);
if( $yt=="lin" )
$this->yscale = new LinearScale($aYMin,$aYMax);
elseif( $yt == "int" ) {
$this->yscale = new LinearScale($aYMin,$aYMax);
$this->yscale->SetIntScale();
}
elseif( $yt=="log" )
$this->yscale = new LogScale($aYMin,$aYMax);
else
JpGraphError::Raise("JpGraph Error: Unknown scale specification for Y-scale. ($axtype)");
$xt=substr($aAxisType,0,3);
if( $xt == "lin" || $xt == "tex" )
$this->xscale = new LinearScale($aXMin,$aXMax,"x");
elseif( $xt == "int" ) {
$this->xscale = new LinearScale($aXMin,$aXMax,"x");
$this->xscale->SetIntScale();
}
elseif( $xt == "log" )
$this->xscale = new LogScale($aXMin,$aXMax,"x");
else
JpGraphError::Raise("JpGraph Error: Unknown scale specification for X-scale. ($aAxisType)");
$this->xscale->Init($this->img);
$this->yscale->Init($this->img);
$this->xaxis = new Axis($this->img,$this->xscale);
$this->yaxis = new Axis($this->img,$this->yscale);
$this->xgrid = new Grid($this->xaxis);
$this->ygrid = new Grid($this->yaxis);
$this->ygrid->Show();
}
// Specify secondary Y scale
function SetY2Scale($aAxisType="lin",$aY2Min=1,$aY2Max=1) {
if( $aAxisType=="lin" )
$this->y2scale = new LinearScale($aY2Min,$aY2Max);
elseif( $aAxisType=="log" ) {
$this->y2scale = new LogScale($aY2Min,$aY2Max);
}
else JpGraphError::Raise("JpGraph: Unsupported Y2 axis type: $axtype
");
$this->y2scale->Init($this->img);
$this->y2axis = new Axis($this->img,$this->y2scale);
$this->y2axis->scale->ticks->SetDirection(SIDE_LEFT);
$this->y2axis->SetLabelPos(SIDE_RIGHT);
// Deafult position is the max x-value
$this->y2axis->SetPos($this->xscale->GetMaxVal());
$this->y2grid = new Grid($this->y2axis);
}
// Specify density of ticks when autoscaling 'normal', 'dense', 'sparse', 'verysparse'
// The dividing factor have been determined heuristically according to my aesthetic
// sense (or lack off) y.m.m.v !
function SetTickDensity($aYDensity=TICKD_NORMAL,$aXDensity=TICKD_NORMAL) {
$this->xtick_factor=30;
$this->ytick_factor=25;
switch( $aYDensity ) {
case TICKD_DENSE:
$this->ytick_factor=12;
break;
case TICKD_NORMAL:
$this->ytick_factor=25;
break;
case TICKD_SPARSE:
$this->ytick_factor=40;
break;
case TICKD_VERYSPARSE:
$this->ytick_factor=100;
break;
default:
JpGraphError::Raise("JpGraph: Unsupported Tick density: $densy");
}
switch( $aXDensity ) {
case TICKD_DENSE:
$this->xtick_factor=18;
break;
case TICKD_NORMAL:
$this->xtick_factor=30;
break;
case TICKD_SPARSE:
$this->xtick_factor=45;
break;
case TICKD_VERYSPARSE:
$this->xtick_factor=60;
break;
default:
JpGraphError::Raise("JpGraph: Unsupported Tick density: $densx");
}
}
// Get a string of all image map areas
function GetCSIMareas() {
$csim="";
foreach ($this->plots as $p) {
$csim.= $p->GetCSIMareas();
}
return $csim;
}
// Get a complete tag for the final image map
function GetHTMLImageMap($aMapName) {
$im = "";
return $im;
}
// Stroke the graph
// $aStrokeFileName If != "" the image will be written to this file and NOT
// streamed back to the browser
function Stroke($aStrokeFileName="") {
// Do any pre-stroke adjustment that is needed by the different plot types
// (i.e bar plots want's to add an offset to the x-labels etc)
for($i=0; $i
You have either:
* Specified an Y axis for autoscaling but have not supplied any plots
* Specified a scale manually but have forgot to specify the tick steps");
}
// Bail out if no plots and no specified X-scale
if( (!$this->xscale->IsSpecified() && count($this->plots)==0 && count($this->y2plots)==0) )
JpGraphError::Raise("JpGraph: Can't draw unspecified X-scale.
No plots.
");
//Check if we should autoscale y-axis
if( !$this->yscale->IsSpecified() && count($this->plots)>0 ) {
list($min,$max) = $this->GetPlotsYMinMax($this->plots);
$this->yscale->AutoScale($this->img,$min,$max,$this->img->plotheight/$this->ytick_factor);
}
if( $this->y2scale != null)
if( !$this->y2scale->IsSpecified() && count($this->y2plots)>0 ) {
list($min,$max) = $this->GetPlotsYMinMax($this->y2plots);
$this->y2scale->AutoScale($this->img,$min,$max,$this->img->plotheight/$this->ytick_factor);
}
//Check if we should autoscale x-axis
if( !$this->xscale->IsSpecified() ) {
if( substr($this->axtype,0,4) == "text" ) {
$max=0;
foreach( $this->plots as $p )
$max=max($max,$p->numpoints-1);
$min=0;
$this->xscale->Update($this->img,$min,$max);
$this->xscale->ticks->Set($this->xaxis->tick_step,1);
$this->xscale->ticks->SupressMinorTickMarks();
}
else {
list($min,$ymin) = $this->plots[0]->Min();
list($max,$ymax) = $this->plots[0]->Max();
foreach( $this->plots as $p ) {
list($xmin,$ymin) = $p->Min();
list($xmax,$ymax) = $p->Max();
$min = Min($xmin,$min);
$max = Max($xmax,$max);
}
$this->xscale->AutoScale($this->img,$min,$max,$this->img->plotwidth/$this->xtick_factor);
}
//Adjust position of y-axis and y2-axis to minimum/maximum of x-scale
$this->yaxis->SetPos($this->xscale->GetMinVal());
if( $this->y2axis != null ) {
$this->y2axis->SetPos($this->xscale->GetMaxVal());
$this->y2axis->SetTitleSide(SIDE_RIGHT);
}
}
// If we have a negative values and x-axis position is at 0
// we need to supress the first and possible the last tick since
// they will be drawn on top of the y-axis (and possible y2 axis)
// The test below might seem strange the reasone being that if
// the user hasn't specified a value for position this will not
// be set until we do the stroke for the axis so as of now it
// is undefined.
if( !$this->xaxis->pos && $this->yscale->GetMinVal() < 0 ) {
$this->yscale->ticks->SupressZeroLabel(false);
$this->xscale->ticks->SupressFirst();
if( $this->y2axis != null ) {
$this->xscale->ticks->SupressLast();
}
}
$this->StrokePlotArea();
// Stroke axis
$this->xaxis->Stroke($this->yscale);
$this->yaxis->Stroke($this->xscale);
// Stroke bands
if( $this->bands != null )
for($i=0; $i
Specified: '".$aImgFormat."'
File: '".$this->background_image."'");
$img = $f($this->background_image);
if( !$img ) {
JpGraphError::Raise("JpGraph Error: Can't read background image: '".$this->background_image."'");
}
return $img;
}
// Private
// Stroke the plot area with either a solid color or a background image
function StrokePlotArea() {
// Copy in background image
if( $this->background_image != "" ) {
$bkgimg = $this->LoadBkgImage($this->background_image_format);
$this->img->_AdjBrightContrast($bkgimg,$this->background_image_bright,
$this->background_image_contr);
$this->img->_AdjSat($bkgimg,$this->background_image_sat);
$bw = ImageSX($bkgimg);
$bh = ImageSY($bkgimg);
$aa = $this->img->SetAngle(0);
switch( $this->background_image_type ) {
case BGIMG_FILLPLOT: // Resize to just fill the plotarea
$this->StrokeFrame();
$GLOBALS["copyfunc"]($this->img->img,$bkgimg,
$this->img->left_margin,$this->img->top_margin,
0,0,$this->img->plotwidth,$this->img->plotheight,
$bw,$bh);
break;
case BGIMG_FILLFRAME: // Fill the whole area from upper left corner, resize to just fit
$GLOBALS["copyfunc"]($this->img->img,$bkgimg,
0,0,0,0,
$this->img->width,$this->img->height,
$bw,$bh);
$this->StrokeFrame();
break;
case BGIMG_COPY: // Just copy the image from left corner, no resizing
$GLOBALS["copyfunc"]($this->img->img,$bkgimg,
0,0,0,0,
$bw,$bh,
$bw,$bh);
$this->StrokeFrame();
break;
case BGIMG_CENTER: // Center original image in the plot area
$centerx = round($this->img->plotwidth/2+$this->img->left_margin-$bw/2);
$centery = round($this->img->plotheight/2+$this->img->top_margin-$bh/2);
$GLOBALS["copyfunc"]($this->img->img,$bkgimg,
$centerx,$centery,
0,0,
$bw,$bh,
$bw,$bh);
$this->StrokeFrame();
break;
default:
JpGraphError::Raise("JpGraph Error: Unknown background image layout");
}
$this->img->SetAngle($aa);
}
else {
$aa = $this->img->SetAngle(0);
$this->StrokeFrame();
$this->img->SetAngle($aa);
$this->img->PushColor($this->plotarea_color);
// Note: To be consistent we really should take a possible shadow
// into account. However, that causes some problem for the LinearScale class
// since in the current design it does not have any links to class Graph which
// means it has no way of compensating for the adjusted plotarea in case of a
// shadow. So, until I redesign LinearScale we can't compensate for this.
// So just set the two adjustment parameters to zero for now.
$boxadj = 0; //$this->doframe ? $this->frame_weight : 0 ;
$adj = 0; //$this->doshadow ? $this->shadow_width : 0 ;
$this->img->FilledRectangle($this->img->left_margin+$boxadj,
$this->img->top_margin+$boxadj,
$this->img->width-$this->img->right_margin-$adj-2*$boxadj,
$this->img->height-$this->img->bottom_margin-$adj-2*$boxadj);
$this->img->PopColor();
}
$this->img->SetAngle($aa);
}
function StrokePlotBox() {
// Should we draw a box around the plot area?
if( $this->boxed ) {
$this->img->SetLineWeight($this->box_weight);
$this->img->SetColor($this->box_color);
$this->img->Rectangle(
$this->img->left_margin,$this->img->top_margin,
$this->img->width-$this->img->right_margin,
$this->img->height-$this->img->bottom_margin);
}
}
function StrokeTitles() {
// Stroke title
$this->title->Center($this->img->left_margin,$this->img->width-$this->img->right_margin,5);
$this->title->Stroke($this->img);
// ... and subtitle
$this->subtitle->Center($this->img->left_margin,$this->img->width-$this->img->right_margin,
7+$this->title->GetFontHeight($this->img));
$this->subtitle->Stroke($this->img);
}
function StrokeTexts() {
// Stroke any user added text objects
if( $this->texts != null ) {
for($i=0; $i
You have unfortunately stumbled upon a bug in JpGraph.
It seems like the scale range is ".$this->world_size." [for ".
$this->type." scale]
Please report Bug #01 to jpgraph@aditus.nu and include the script
that gave this error.
This problem could potentially be caused by trying to use \"illegal\"
values in the input data arrays (like trying to send in strings or
only NULL values) which causes the autoscaling to fail.");
}
// scale_factor = number of pixels per world unit
$this->scale_factor=$this->world_abs_size/($this->world_size*1.0);
// scale_abs = start and end points of scale in absolute pixels
$this->scale_abs=array($this->off,$this->off+$this->world_size*$this->scale_factor);
}
// Calculate number of ticks steps with a specific division
// $a is the divisor of 10**x to generate the first maj tick intervall
// $a=1, $b=2 give major ticks with multiple of 10, ...,0.1,1,10,...
// $a=5, $b=2 give major ticks with multiple of 2:s ...,0.2,2,20,...
// $a=2, $b=5 give major ticks with multiple of 5:s ...,0.5,5,50,...
// We return a vector of
// [$numsteps,$adjmin,$adjmax,$minstep,$majstep]
// If $majend==true then the first and last marks on the axis will be major
// labeled tick marks otherwise it will be adjusted to the closest min tick mark
function CalcTicks($maxsteps,$min,$max,$a,$b,$majend=true) {
$diff=$max-$min;
if( $diff==0 )
$ld=0;
else
$ld=floor(log10($diff));
// Gravitate min towards zero if we are close
if( $min>0 && $min < pow(10,$ld) ) $min=0;
$majstep=pow(10,$ld-1)/$a;
$minstep=$majstep/$b;
$adjmax=ceil($max/$minstep)*$minstep;
$adjmin=floor($min/$minstep)*$minstep;
$adjdiff = $adjmax-$adjmin;
$numsteps=$adjdiff/$majstep;
while( $numsteps>$maxsteps ) {
$majstep=pow(10,$ld)/$a;
$numsteps=$adjdiff/$majstep;
++$ld;
}
$minstep=$majstep/$b;
$adjmin=floor($min/$minstep)*$minstep;
$adjdiff = $adjmax-$adjmin;
if( $majend ) {
$adjmin = floor($min/$majstep)*$majstep;
$adjdiff = $adjmax-$adjmin;
$adjmax = ceil($adjdiff/$majstep)*$majstep+$adjmin;
}
else
$adjmax=ceil($max/$minstep)*$minstep;
return array($numsteps,$adjmin,$adjmax,$minstep,$majstep);
}
function IntCalcTicks($maxsteps,$min,$max,$a,$majend=true) {
$diff=$max-$min;
if( $diff==0 )
$ld=0;
else
$ld=floor(log10($diff));
// Gravitate min towards zero if we are close
if( $min>0 && $min < pow(10,$ld) ) $min=0;
$majstep=pow(10,$ld-1)/$a;
$adjmax=ceil($max/$majstep)*$majstep;
$adjmin=floor($min/$majstep)*$majstep;
$adjdiff = $adjmax-$adjmin;
$numsteps=$adjdiff/$majstep;
while( $numsteps>$maxsteps ) {
$majstep=pow(10,$ld)/$a;
$numsteps=$adjdiff/$majstep;
++$ld;
}
$adjmin=floor($min/$majstep)*$majstep;
$adjdiff = $adjmax-$adjmin;
if( $majend ) {
$adjmin = floor($min/$majstep)*$majstep;
$adjdiff = $adjmax-$adjmin;
$adjmax = ceil($adjdiff/$majstep)*$majstep+$adjmin;
}
else
$adjmax=ceil($max/$majstep)*$majstep;
return array($numsteps,$adjmin,$adjmax,$majstep);
}
// Determine the minimum of three values witha weight for last value
function MatchMin3($a,$b,$c,$weight) {
if( $a < $b ) {
if( $a < ($c*$weight) )
return 1; // $a smallest
else
return 3; // $c smallest
}
elseif( $b < ($c*$weight) )
return 2; // $b smallest
return 3; // $c smallest
}
} // Class
//===================================================
// CLASS RGB
// Description: Color definitions as RGB triples
//===================================================
class RGB {
var $rgb_table;
var $img;
function RGB(&$aImg) {
$this->img = $aImg;
// Conversion array between color names and RGB
$this->rgb_table = array(
"aqua"=> array(0,255,255),
"lime"=> array(0,255,0),
"teal"=> array(0,128,128),
"whitesmoke"=>array(245,245,245),
"gainsboro"=>array(220,220,220),
"oldlace"=>array(253,245,230),
"linen"=>array(250,240,230),
"antiquewhite"=>array(250,235,215),
"papayawhip"=>array(255,239,213),
"blanchedalmond"=>array(255,235,205),
"bisque"=>array(255,228,196),
"peachpuff"=>array(255,218,185),
"navajowhite"=>array(255,222,173),
"moccasin"=>array(255,228,181),
"cornsilk"=>array(255,248,220),
"ivory"=>array(255,255,240),
"lemonchiffon"=>array(255,250,205),
"seashell"=>array(255,245,238),
"mintcream"=>array(245,255,250),
"azure"=>array(240,255,255),
"aliceblue"=>array(240,248,255),
"lavender"=>array(230,230,250),
"lavenderblush"=>array(255,240,245),
"mistyrose"=>array(255,228,225),
"white"=>array(255,255,255),
"black"=>array(0,0,0),
"darkslategray"=>array(47,79,79),
"dimgray"=>array(105,105,105),
"slategray"=>array(112,128,144),
"lightslategray"=>array(119,136,153),
"gray"=>array(190,190,190),
"lightgray"=>array(211,211,211),
"midnightblue"=>array(25,25,112),
"navy"=>array(0,0,128),
"cornflowerblue"=>array(100,149,237),
"darkslateblue"=>array(72,61,139),
"slateblue"=>array(106,90,205),
"mediumslateblue"=>array(123,104,238),
"lightslateblue"=>array(132,112,255),
"mediumblue"=>array(0,0,205),
"royalblue"=>array(65,105,225),
"blue"=>array(0,0,255),
"dodgerblue"=>array(30,144,255),
"deepskyblue"=>array(0,191,255),
"skyblue"=>array(135,206,235),
"lightskyblue"=>array(135,206,250),
"steelblue"=>array(70,130,180),
"lightred"=>array(211,167,168),
"lightsteelblue"=>array(176,196,222),
"lightblue"=>array(173,216,230),
"powderblue"=>array(176,224,230),
"paleturquoise"=>array(175,238,238),
"darkturquoise"=>array(0,206,209),
"mediumturquoise"=>array(72,209,204),
"turquoise"=>array(64,224,208),
"cyan"=>array(0,255,255),
"lightcyan"=>array(224,255,255),
"cadetblue"=>array(95,158,160),
"mediumaquamarine"=>array(102,205,170),
"aquamarine"=>array(127,255,212),
"darkgreen"=>array(0,100,0),
"darkolivegreen"=>array(85,107,47),
"darkseagreen"=>array(143,188,143),
"seagreen"=>array(46,139,87),
"mediumseagreen"=>array(60,179,113),
"lightseagreen"=>array(32,178,170),
"palegreen"=>array(152,251,152),
"springgreen"=>array(0,255,127),
"lawngreen"=>array(124,252,0),
"green"=>array(0,255,0),
"chartreuse"=>array(127,255,0),
"mediumspringgreen"=>array(0,250,154),
"greenyellow"=>array(173,255,47),
"limegreen"=>array(50,205,50),
"yellowgreen"=>array(154,205,50),
"forestgreen"=>array(34,139,34),
"olivedrab"=>array(107,142,35),
"darkkhaki"=>array(189,183,107),
"khaki"=>array(240,230,140),
"palegoldenrod"=>array(238,232,170),
"lightgoldenrodyellow"=>array(250,250,210),
"lightyellow"=>array(255,255,200),
"yellow"=>array(255,255,0),
"gold"=>array(255,215,0),
"lightgoldenrod"=>array(238,221,130),
"goldenrod"=>array(218,165,32),
"darkgoldenrod"=>array(184,134,11),
"rosybrown"=>array(188,143,143),
"indianred"=>array(205,92,92),
"saddlebrown"=>array(139,69,19),
"sienna"=>array(160,82,45),
"peru"=>array(205,133,63),
"burlywood"=>array(222,184,135),
"beige"=>array(245,245,220),
"wheat"=>array(245,222,179),
"sandybrown"=>array(244,164,96),
"tan"=>array(210,180,140),
"chocolate"=>array(210,105,30),
"firebrick"=>array(178,34,34),
"brown"=>array(165,42,42),
"darksalmon"=>array(233,150,122),
"salmon"=>array(250,128,114),
"lightsalmon"=>array(255,160,122),
"orange"=>array(255,165,0),
"darkorange"=>array(255,140,0),
"coral"=>array(255,127,80),
"lightcoral"=>array(240,128,128),
"tomato"=>array(255,99,71),
"orangered"=>array(255,69,0),
"red"=>array(255,0,0),
"hotpink"=>array(255,105,180),
"deeppink"=>array(255,20,147),
"pink"=>array(255,192,203),
"lightpink"=>array(255,182,193),
"palevioletred"=>array(219,112,147),
"maroon"=>array(176,48,96),
"mediumvioletred"=>array(199,21,133),
"violetred"=>array(208,32,144),
"magenta"=>array(255,0,255),
"violet"=>array(238,130,238),
"plum"=>array(221,160,221),
"orchid"=>array(218,112,214),
"mediumorchid"=>array(186,85,211),
"darkorchid"=>array(153,50,204),
"darkviolet"=>array(148,0,211),
"blueviolet"=>array(138,43,226),
"purple"=>array(160,32,240),
"mediumpurple"=>array(147,112,219),
"thistle"=>array(216,191,216),
"snow1"=>array(255,250,250),
"snow2"=>array(238,233,233),
"snow3"=>array(205,201,201),
"snow4"=>array(139,137,137),
"seashell1"=>array(255,245,238),
"seashell2"=>array(238,229,222),
"seashell3"=>array(205,197,191),
"seashell4"=>array(139,134,130),
"AntiqueWhite1"=>array(255,239,219),
"AntiqueWhite2"=>array(238,223,204),
"AntiqueWhite3"=>array(205,192,176),
"AntiqueWhite4"=>array(139,131,120),
"bisque1"=>array(255,228,196),
"bisque2"=>array(238,213,183),
"bisque3"=>array(205,183,158),
"bisque4"=>array(139,125,107),
"peachPuff1"=>array(255,218,185),
"peachpuff2"=>array(238,203,173),
"peachpuff3"=>array(205,175,149),
"peachpuff4"=>array(139,119,101),
"navajowhite1"=>array(255,222,173),
"navajowhite2"=>array(238,207,161),
"navajowhite3"=>array(205,179,139),
"navajowhite4"=>array(139,121,94),
"lemonchiffon1"=>array(255,250,205),
"lemonchiffon2"=>array(238,233,191),
"lemonchiffon3"=>array(205,201,165),
"lemonchiffon4"=>array(139,137,112),
"ivory1"=>array(255,255,240),
"ivory2"=>array(238,238,224),
"ivory3"=>array(205,205,193),
"ivory4"=>array(139,139,131),
"honeydew"=>array(193,205,193),
"lavenderblush1"=>array(255,240,245),
"lavenderblush2"=>array(238,224,229),
"lavenderblush3"=>array(205,193,197),
"lavenderblush4"=>array(139,131,134),
"mistyrose1"=>array(255,228,225),
"mistyrose2"=>array(238,213,210),
"mistyrose3"=>array(205,183,181),
"mistyrose4"=>array(139,125,123),
"azure1"=>array(240,255,255),
"azure2"=>array(224,238,238),
"azure3"=>array(193,205,205),
"azure4"=>array(131,139,139),
"slateblue1"=>array(131,111,255),
"slateblue2"=>array(122,103,238),
"slateblue3"=>array(105,89,205),
"slateblue4"=>array(71,60,139),
"royalblue1"=>array(72,118,255),
"royalblue2"=>array(67,110,238),
"royalblue3"=>array(58,95,205),
"royalblue4"=>array(39,64,139),
"dodgerblue1"=>array(30,144,255),
"dodgerblue2"=>array(28,134,238),
"dodgerblue3"=>array(24,116,205),
"dodgerblue4"=>array(16,78,139),
"steelblue1"=>array(99,184,255),
"steelblue2"=>array(92,172,238),
"steelblue3"=>array(79,148,205),
"steelblue4"=>array(54,100,139),
"deepskyblue1"=>array(0,191,255),
"deepskyblue2"=>array(0,178,238),
"deepskyblue3"=>array(0,154,205),
"deepskyblue4"=>array(0,104,139),
"skyblue1"=>array(135,206,255),
"skyblue2"=>array(126,192,238),
"skyblue3"=>array(108,166,205),
"skyblue4"=>array(74,112,139),
"lightskyblue1"=>array(176,226,255),
"lightskyblue2"=>array(164,211,238),
"lightskyblue3"=>array(141,182,205),
"lightskyblue4"=>array(96,123,139),
"slategray1"=>array(198,226,255),
"slategray2"=>array(185,211,238),
"slategray3"=>array(159,182,205),
"slategray4"=>array(108,123,139),
"lightsteelblue1"=>array(202,225,255),
"lightsteelblue2"=>array(188,210,238),
"lightsteelblue3"=>array(162,181,205),
"lightsteelblue4"=>array(110,123,139),
"lightblue1"=>array(191,239,255),
"lightblue2"=>array(178,223,238),
"lightblue3"=>array(154,192,205),
"lightblue4"=>array(104,131,139),
"lightcyan1"=>array(224,255,255),
"lightcyan2"=>array(209,238,238),
"lightcyan3"=>array(180,205,205),
"lightcyan4"=>array(122,139,139),
"paleturquoise1"=>array(187,255,255),
"paleturquoise2"=>array(174,238,238),
"paleturquoise3"=>array(150,205,205),
"paleturquoise4"=>array(102,139,139),
"cadetblue1"=>array(152,245,255),
"cadetblue2"=>array(142,229,238),
"cadetblue3"=>array(122,197,205),
"cadetblue4"=>array(83,134,139),
"turquoise1"=>array(0,245,255),
"turquoise2"=>array(0,229,238),
"turquoise3"=>array(0,197,205),
"turquoise4"=>array(0,134,139),
"cyan1"=>array(0,255,255),
"cyan2"=>array(0,238,238),
"cyan3"=>array(0,205,205),
"cyan4"=>array(0,139,139),
"darkslategray1"=>array(151,255,255),
"darkslategray2"=>array(141,238,238),
"darkslategray3"=>array(121,205,205),
"darkslategray4"=>array(82,139,139),
"aquamarine1"=>array(127,255,212),
"aquamarine2"=>array(118,238,198),
"aquamarine3"=>array(102,205,170),
"aquamarine4"=>array(69,139,116),
"darkseagreen1"=>array(193,255,193),
"darkseagreen2"=>array(180,238,180),
"darkseagreen3"=>array(155,205,155),
"darkseagreen4"=>array(105,139,105),
"seagreen1"=>array(84,255,159),
"seagreen2"=>array(78,238,148),
"seagreen3"=>array(67,205,128),
"seagreen4"=>array(46,139,87),
"palegreen1"=>array(154,255,154),
"palegreen2"=>array(144,238,144),
"palegreen3"=>array(124,205,124),
"palegreen4"=>array(84,139,84),
"springgreen1"=>array(0,255,127),
"springgreen2"=>array(0,238,118),
"springgreen3"=>array(0,205,102),
"springgreen4"=>array(0,139,69),
"chartreuse1"=>array(127,255,0),
"chartreuse2"=>array(118,238,0),
"chartreuse3"=>array(102,205,0),
"chartreuse4"=>array(69,139,0),
"olivedrab1"=>array(192,255,62),
"olivedrab2"=>array(179,238,58),
"olivedrab3"=>array(154,205,50),
"olivedrab4"=>array(105,139,34),
"darkolivegreen1"=>array(202,255,112),
"darkolivegreen2"=>array(188,238,104),
"darkolivegreen3"=>array(162,205,90),
"darkolivegreen4"=>array(110,139,61),
"khaki1"=>array(255,246,143),
"khaki2"=>array(238,230,133),
"khaki3"=>array(205,198,115),
"khaki4"=>array(139,134,78),
"lightgoldenrod1"=>array(255,236,139),
"lightgoldenrod2"=>array(238,220,130),
"lightgoldenrod3"=>array(205,190,112),
"lightgoldenrod4"=>array(139,129,76),
"yellow1"=>array(255,255,0),
"yellow2"=>array(238,238,0),
"yellow3"=>array(205,205,0),
"yellow4"=>array(139,139,0),
"gold1"=>array(255,215,0),
"gold2"=>array(238,201,0),
"gold3"=>array(205,173,0),
"gold4"=>array(139,117,0),
"goldenrod1"=>array(255,193,37),
"goldenrod2"=>array(238,180,34),
"goldenrod3"=>array(205,155,29),
"goldenrod4"=>array(139,105,20),
"darkgoldenrod1"=>array(255,185,15),
"darkgoldenrod2"=>array(238,173,14),
"darkgoldenrod3"=>array(205,149,12),
"darkgoldenrod4"=>array(139,101,8),
"rosybrown1"=>array(255,193,193),
"rosybrown2"=>array(238,180,180),
"rosybrown3"=>array(205,155,155),
"rosybrown4"=>array(139,105,105),
"indianred1"=>array(255,106,106),
"indianred2"=>array(238,99,99),
"indianred3"=>array(205,85,85),
"indianred4"=>array(139,58,58),
"sienna1"=>array(255,130,71),
"sienna2"=>array(238,121,66),
"sienna3"=>array(205,104,57),
"sienna4"=>array(139,71,38),
"burlywood1"=>array(255,211,155),
"burlywood2"=>array(238,197,145),
"burlywood3"=>array(205,170,125),
"burlywood4"=>array(139,115,85),
"wheat1"=>array(255,231,186),
"wheat2"=>array(238,216,174),
"wheat3"=>array(205,186,150),
"wheat4"=>array(139,126,102),
"tan1"=>array(255,165,79),
"tan2"=>array(238,154,73),
"tan3"=>array(205,133,63),
"tan4"=>array(139,90,43),
"chocolate1"=>array(255,127,36),
"chocolate2"=>array(238,118,33),
"chocolate3"=>array(205,102,29),
"chocolate4"=>array(139,69,19),
"firebrick1"=>array(255,48,48),
"firebrick2"=>array(238,44,44),
"firebrick3"=>array(205,38,38),
"firebrick4"=>array(139,26,26),
"brown1"=>array(255,64,64),
"brown2"=>array(238,59,59),
"brown3"=>array(205,51,51),
"brown4"=>array(139,35,35),
"salmon1"=>array(255,140,105),
"salmon2"=>array(238,130,98),
"salmon3"=>array(205,112,84),
"salmon4"=>array(139,76,57),
"lightsalmon1"=>array(255,160,122),
"lightsalmon2"=>array(238,149,114),
"lightsalmon3"=>array(205,129,98),
"lightsalmon4"=>array(139,87,66),
"orange1"=>array(255,165,0),
"orange2"=>array(238,154,0),
"orange3"=>array(205,133,0),
"orange4"=>array(139,90,0),
"darkorange1"=>array(255,127,0),
"darkorange2"=>array(238,118,0),
"darkorange3"=>array(205,102,0),
"darkorange4"=>array(139,69,0),
"coral1"=>array(255,114,86),
"coral2"=>array(238,106,80),
"coral3"=>array(205,91,69),
"coral4"=>array(139,62,47),
"tomato1"=>array(255,99,71),
"tomato2"=>array(238,92,66),
"tomato3"=>array(205,79,57),
"tomato4"=>array(139,54,38),
"orangered1"=>array(255,69,0),
"orangered2"=>array(238,64,0),
"orangered3"=>array(205,55,0),
"orangered4"=>array(139,37,0),
"deeppink1"=>array(255,20,147),
"deeppink2"=>array(238,18,137),
"deeppink3"=>array(205,16,118),
"deeppink4"=>array(139,10,80),
"hotpink1"=>array(255,110,180),
"hotpink2"=>array(238,106,167),
"hotpink3"=>array(205,96,144),
"hotpink4"=>array(139,58,98),
"pink1"=>array(255,181,197),
"pink2"=>array(238,169,184),
"pink3"=>array(205,145,158),
"pink4"=>array(139,99,108),
"lightpink1"=>array(255,174,185),
"lightpink2"=>array(238,162,173),
"lightpink3"=>array(205,140,149),
"lightpink4"=>array(139,95,101),
"palevioletred1"=>array(255,130,171),
"palevioletred2"=>array(238,121,159),
"palevioletred3"=>array(205,104,137),
"palevioletred4"=>array(139,71,93),
"maroon1"=>array(255,52,179),
"maroon2"=>array(238,48,167),
"maroon3"=>array(205,41,144),
"maroon4"=>array(139,28,98),
"violetred1"=>array(255,62,150),
"violetred2"=>array(238,58,140),
"violetred3"=>array(205,50,120),
"violetred4"=>array(139,34,82),
"magenta1"=>array(255,0,255),
"magenta2"=>array(238,0,238),
"magenta3"=>array(205,0,205),
"magenta4"=>array(139,0,139),
"mediumred"=>array(140,34,34),
"orchid1"=>array(255,131,250),
"orchid2"=>array(238,122,233),
"orchid3"=>array(205,105,201),
"orchid4"=>array(139,71,137),
"plum1"=>array(255,187,255),
"plum2"=>array(238,174,238),
"plum3"=>array(205,150,205),
"plum4"=>array(139,102,139),
"mediumorchid1"=>array(224,102,255),
"mediumorchid2"=>array(209,95,238),
"mediumorchid3"=>array(180,82,205),
"mediumorchid4"=>array(122,55,139),
"darkorchid1"=>array(191,62,255),
"darkorchid2"=>array(178,58,238),
"darkorchid3"=>array(154,50,205),
"darkorchid4"=>array(104,34,139),
"purple1"=>array(155,48,255),
"purple2"=>array(145,44,238),
"purple3"=>array(125,38,205),
"purple4"=>array(85,26,139),
"mediumpurple1"=>array(171,130,255),
"mediumpurple2"=>array(159,121,238),
"mediumpurple3"=>array(137,104,205),
"mediumpurple4"=>array(93,71,139),
"thistle1"=>array(255,225,255),
"thistle2"=>array(238,210,238),
"thistle3"=>array(205,181,205),
"thistle4"=>array(139,123,139),
"gray1"=>array(10,10,10),
"gray2"=>array(40,40,30),
"gray3"=>array(70,70,70),
"gray4"=>array(100,100,100),
"gray5"=>array(130,130,130),
"gray6"=>array(160,160,160),
"gray7"=>array(190,190,190),
"gray8"=>array(210,210,210),
"gray9"=>array(240,240,240),
"darkgray"=>array(100,100,100),
"darkblue"=>array(0,0,139),
"darkcyan"=>array(0,139,139),
"darkmagenta"=>array(139,0,139),
"darkred"=>array(139,0,0),
"silver"=>array(192, 192, 192),
"eggplant"=>array(144,176,168),
"lightgreen"=>array(144,238,144));
}
//----------------
// PUBLIC METHODS
// Colors can be specified as either
// 1. #xxxxxx HTML style
// 2. "colorname" as a named color
// 3. array(r,g,b) RGB triple
// This function translates this to a native RGB format and returns an
// RGB triple.
function Color($aColor) {
if (is_string($aColor)) {
// Extract potential adjustment figure at end of color
// specification
$aColor = strtok($aColor,":");
$adj = 0+strtok(":");
if( $adj==0 ) $adj=1;
if (substr($aColor, 0, 1) == "#") {
return array($adj*hexdec(substr($aColor, 1, 2)),
$adj*hexdec(substr($aColor, 3, 2)),
$adj*hexdec(substr($aColor, 5, 2)));
} else {
if(!isset($this->rgb_table[$aColor]) )
JpGraphError::Raise("JpGraph Error: Unknown color: $aColor");
$tmp=$this->rgb_table[$aColor];
return array($adj*$tmp[0],$adj*$tmp[1],$adj*$tmp[2]);
}
} elseif( is_array($aColor) && (count($aColor)==3) ) {
return $aColor;
}
else
JpGraphError::Raise("JpGraph Error: Unknown color specification: $aColor , size=".count($aColor));
}
// Compare two colors
// return true if equal
function Equal($aCol1,$aCol2) {
$c1 = $this->Color($aCol1);
$c2 = $this->Color($aCol2);
if( $c1[0]==$c2[0] && $c1[1]==$c2[1] && $c1[2]==$c2[2] )
return true;
else
return false;
}
// Allocate a new color in the current image
// Return new color index, -1 if no more colors could be allocated
function Allocate($aColor) {
list ($r, $g, $b) = $this->color($aColor);
if($GLOBALS['gd2']==true) {
return imagecolorresolvealpha($this->img, $r, $g, $b, 0);
} else {
$index = imagecolorexact($this->img, $r, $g, $b);
if ($index == -1) {
$index = imagecolorallocate($this->img, $r, $g, $b);
if( USE_APPROX_COLORS && $index == -1 )
$index = imagecolorresolve($this->img, $r, $g, $b);
}
return $index;
}
}
} // Class
//===================================================
// CLASS Image
// Description: Wrapper class with some goodies to form the
// Interface to low level image drawing routines.
//===================================================
class Image {
var $img_format;
var $expired=false;
var $img;
var $left_margin=30,$right_margin=30,$top_margin=20,$bottom_margin=30;
var $plotwidth,$plotheight;
var $rgb;
var $current_color,$current_color_name;
var $lastx=0, $lasty=0;
var $width, $height;
var $line_weight=1;
var $line_style=1; // Default line style is solid
var $obs_list=array();
var $font_size=12,$font_family=FF_FONT1, $font_style=FS_NORMAL;
var $text_halign="left",$text_valign="bottom";
var $ttf=null;
var $use_anti_aliasing=false;
var $quality=null;
var $colorstack=array(),$colorstackidx=0;
//---------------
// CONSTRUCTOR
function Image($aWidth,$aHeight,$aFormat=DEFAULT_GFORMAT) {
$this->CreateImgCanvas($aWidth,$aHeight);
if( !$this->SetImgFormat($aFormat) ) {
JpGraphError::Raise("JpGraph: Selected graphic format is either not supported or unknown [$aFormat]");
}
$this->ttf = new TTF();
}
function SetAutoMargin() {
$min_bm=10;
if( BRAND_TIMING )
$min_bm=15;
$lm = max(12,$this->width/7);
$rm = max(12,$this->width/10);
$tm = max(24,$this->height/7);
$bm = max($min_bm,$this->height/7);
$this->SetMargin($lm,$rm,$tm,$bm);
}
function CreateImgCanvas($aWidth=-1,$aHeight=-1) {
$this->width=$aWidth;
$this->height=$aHeight;
$this->SetAutoMargin();
if( $aWidth==-1 || $aHeight==-1 ) {
// We will set the final size later.
// Note: The size must be specified before any other
// img routines that stroke anything are called.
$this->img = null;
$this->rgb = null;
return;
}
if( $GLOBALS['gd2']==true && USE_TRUECOLOR ) {
$this->img = imagecreatetruecolor($aWidth, $aHeight);
imagefilledrectangle($this->img, 0, 0, $aWidth, $aHeight, 0xffffff);
} else {
$this->img = imagecreate($aWidth, $aHeight);
}
assert($this->img != 0);
$this->rgb = new RGB($this->img);
// First index is background so this will be white
$this->SetColor("white");
}
//---------------
// PUBLIC METHODS
// Add observer. The observer will be notified when
// the margin changes
function AddObserver($aMethod,&$aObject) {
$this->obs_list[]=array($aMethod,&$aObject);
}
// Call all observers
function NotifyObservers() {
// foreach($this->obs_list as $o)
// $o[1]->$o[0]($this);
for($i=0; $i < count($this->obs_list); ++$i) {
$obj = & $this->obs_list[$i][1];
$method = $this->obs_list[$i][0];
$obj->$method($this);
}
}
function SetFont($family,$style=FS_NORMAL,$size=10) {
if($family==FONT1_BOLD || $family==FONT2_BOLD || $family==FONT0 || $family==FONT1 || $family==FONT2 )
JpGraphError::Raise("JpGraph Error: Usage of FONT0, FONT1, FONT2 is deprecated. Use FF_xxx instead.");
$this->font_family=$family;
$this->font_style=$style;
$this->font_size=$size;
if( ($this->font_family==FF_FONT1 || $this->font_family==FF_FONT2) && $this->font_style==FS_BOLD ){
++$this->font_family;
}
}
// Get the specific height for a text string
function GetTextHeight($txt="",$angle=0) {
// Builtin font?
$tmp = split("\n",$txt);
$n = count($tmp);
$m=0;
for($i=0; $i
Image has already allocated maximum of $tc colors.
This might happen if you have anti-aliasing turned on
together with a background image or perhaps gradient fill
since this requires many, many colors. Try to turn off
anti-aliasing.
DEFINE(\"USE_APPROX_COLORS\",true);
in jpgraph.php This will use approximative colors
when the palette is full.
\n";
if( $numsteps < 2 ) $numsteps=2;
$delta = ($e-$s)/$numsteps;
$pa=array();
$a = $s;
for($i=1; $i<=$numsteps; ++$i ) {
$p[2*$i] = round($cx + $w*cos($a));
$p[2*$i+1] = round($cy - $h*sin($a));
$a = $s + $i*$delta;
$pa[2*($i-1)] = $p[2*$i];
$pa[2*($i-1)+1] = $p[2*$i+1];
}
// Get the last point at the exact ending angle to avoid
// any rounding errors.
$p[2*$i] = round($cx + $w*cos($e));
$p[2*$i+1] = round($cy - $h*sin($e));
$pa[2*($i-1)] = $p[2*$i];
$pa[2*($i-1)+1] = $p[2*$i+1];
$i++;
$p[2*$i] = $cx;
$p[2*$i+1] = $cy;
if( $fillcolor != "" ) {
$this->PushColor($fillcolor);
$this->FilledPolygon($p);
$this->PopColor();
}
$this->Polygon($p);
if( $arccolor != "" && ($arccolor != $this->current_color) ) {
$n = count($pa)/2;
$this->PushColor($arccolor);
$this->SetStartPoint($pa[0],$pa[1]);
for($i=1; $i<$n; ++$i)
$this->LineTo($pa[2*$i],$pa[2*$i+1]);
$this->PopColor();
}
}
function Ellipse($xc,$yc,$w,$h) {
$this->Arc($xc,$yc,$w,$h,0,360);
}
// Breseham circle gives visually better result then using GD
// built in arc(). It takes some more time but gives better
// accuracy.
function BresenhamCircle($xc,$yc,$r) {
$d = 3-2*$r;
$x = 0;
$y = $r;
while($x<=$y) {
$this->Point($xc+$x,$yc+$y);
$this->Point($xc+$x,$yc-$y);
$this->Point($xc-$x,$yc+$y);
$this->Point($xc-$x,$yc-$y);
$this->Point($xc+$y,$yc+$x);
$this->Point($xc+$y,$yc-$x);
$this->Point($xc-$y,$yc+$x);
$this->Point($xc-$y,$yc-$x);
if( $d<0 ) $d += 4*$x+6;
else {
$d += 4*($x-$y)+10;
--$y;
}
++$x;
}
}
function Circle($xc,$yc,$r) {
if( USE_BRESENHAM )
$this->BresenhamCircle($xc,$yc,$r);
else {
$this->Arc($xc,$yc,$r*2,$r*2,0,360);
// For some reason imageellipse() isn't in GD 2.0.1, PHP 4.1.1
//imageellipse($this->img,$xc,$yc,$r,$r,$this->current_color);
}
}
function FilledCircle($xc,$yc,$r) {
imagefilledellipse($this->img,$xc,$yc,2*$r,2*$r,$this->current_color);
}
// Linear Color InterPolation
function lip($f,$t,$p) {
$p = round($p,1);
$r = $f[0] + ($t[0]-$f[0])*$p;
$g = $f[1] + ($t[1]-$f[1])*$p;
$b = $f[2] + ($t[2]-$f[2])*$p;
return array($r,$g,$b);
}
// Anti-aliased line.
// Note that this is roughly 8 times slower then a normal line!
function WuLine($x1,$y1,$x2,$y2) {
// Get foreground line color
$lc = imagecolorsforindex($this->img,$this->current_color);
$lc = array($lc["red"],$lc["green"],$lc["blue"]);
$dx = $x2-$x1;
$dy = $y2-$y1;
if( abs($dx) > abs($dy) ) {
if( $dx<0 ) {
$dx = -$dx;$dy = -$dy;
$tmp=$x2;$x2=$x1;$x1=$tmp;
$tmp=$y2;$y2=$y1;$y1=$tmp;
}
$x=$x1<<16; $y=$y1<<16;
$yinc = ($dy*65535)/$dx;
while( ($x >> 16) < $x2 ) {
$bc = imagecolorsforindex($this->img,imagecolorat($this->img,$x>>16,$y>>16));
$bc=array($bc["red"],$bc["green"],$bc["blue"]);
$this->SetColor($this->lip($lc,$bc,($y & 0xFFFF)/65535));
imagesetpixel($this->img,$x>>16,$y>>16,$this->current_color);
$this->SetColor($this->lip($lc,$bc,(~$y & 0xFFFF)/65535));
imagesetpixel($this->img,$x>>16,($y>>16)+1,$this->current_color);
$x += 65536; $y += $yinc;
}
}
else {
if( $dy<0 ) {
$dx = -$dx;$dy = -$dy;
$tmp=$x2;$x2=$x1;$x1=$tmp;
$tmp=$y2;$y2=$y1;$y1=$tmp;
}
$x=$x1<<16; $y=$y1<<16;
$xinc = ($dx*65535)/$dy;
while( ($y >> 16) < $y2 ) {
$bc = imagecolorsforindex($this->img,imagecolorat($this->img,$x>>16,$y>>16));
$bc=array($bc["red"],$bc["green"],$bc["blue"]);
$this->SetColor($this->lip($lc,$bc,($x & 0xFFFF)/65535));
imagesetpixel($this->img,$x>>16,$y>>16,$this->current_color);
$this->SetColor($this->lip($lc,$bc,(~$x & 0xFFFF)/65535));
imagesetpixel($this->img,($x>>16)+1,$y>>16,$this->current_color);
$y += 65536; $x += $xinc;
}
}
$this->SetColor($lc);
imagesetpixel($this->img,$x2,$y2,$this->current_color);
imagesetpixel($this->img,$x1,$y1,$this->current_color);
}
// Set line style dashed, dotted etc
function SetLineStyle($s) {
if( is_numeric($s) ) {
if( $s<1 || $s>4 )
JpGraphError::Raise("JpGraph Error: Illegal numeric argument to SetLineStyle(): $s");
}
elseif( is_string($s) ) {
if( $s == "solid" ) $s=1;
elseif( $s == "dotted" ) $s=2;
elseif( $s == "dashed" ) $s=3;
elseif( $s == "longdashed" ) $s=4;
else JpGraphError::Raise("JpGraph Error: Illegal string argument to SetLineStyle(): $s");
}
else JpGraphError::Raise("JpGraph Error: Illegal argument to SetLineStyle $s");
$this->line_style=$s;
}
// Same as Line but take the line_style into account
function StyleLine($x1,$y1,$x2,$y2) {
switch( $this->line_style ) {
case 1:// Solid
$this->Line($x1,$y1,$x2,$y2);
break;
case 2: // Dotted
$this->DashedLine($x1,$y1,$x2,$y2,1,6);
break;
case 3: // Dashed
$this->DashedLine($x1,$y1,$x2,$y2,2,4);
break;
case 4: // Longdashes
$this->DashedLine($x1,$y1,$x2,$y2,8,6);
break;
default:
JpGraphError::Raise("JpGraph Error: Unknown line style: $this->line_style ");
break;
}
}
function Line($x1,$y1,$x2,$y2) {
if( $this->line_weight==0 ) return;
if( $this->use_anti_aliasing ) {
$dx = $x2-$x1;
$dy = $y2-$y1;
// Vertical, Horizontal or 45 lines don't need anti-aliasing
if( $dx!=0 && $dy!=0 && $dx!=$dy ) {
$this->WuLine($x1,$y1,$x2,$y2);
return;
}
}
if( $this->line_weight==1 )
imageline($this->img,$x1,$y1,$x2,$y2,$this->current_color);
elseif( $x1==$x2 ) { // Special case for vertical lines
imageline($this->img,$x1,$y1,$x2,$y2,$this->current_color);
$w1=floor($this->line_weight/2);
$w2=floor(($this->line_weight-1)/2);
for($i=1; $i<=$w1; ++$i)
imageline($this->img,$x1+$i,$y1,$x2+$i,$y2,$this->current_color);
for($i=1; $i<=$w2; ++$i)
imageline($this->img,$x1-$i,$y1,$x2-$i,$y2,$this->current_color);
}
elseif( $y1==$y2 ) { // Special case for horizontal lines
imageline($this->img,$x1,$y1,$x2,$y2,$this->current_color);
$w1=floor($this->line_weight/2);
$w2=floor(($this->line_weight-1)/2);
for($i=1; $i<=$w1; ++$i)
imageline($this->img,$x1,$y1+$i,$x2,$y2+$i,$this->current_color);
for($i=1; $i<=$w2; ++$i)
imageline($this->img,$x1,$y1-$i,$x2,$y2-$i,$this->current_color);
}
else { // General case with a line at an angle
$a = atan2($y1-$y2,$x2-$x1);
// Now establish some offsets from the center. This gets a little
// bit involved since we are dealing with integer functions and we
// want the apperance to be as smooth as possible and never be thicker
// then the specified width.
// We do the trig stuff to make sure that the endpoints of the line
// are perpendicular to the line itself.
$dx=(sin($a)*$this->line_weight/2);
$dy=(cos($a)*$this->line_weight/2);
$pnts = array($x2+$dx,$y2+$dy,$x2-$dx,$y2-$dy,$x1-$dx,$y1-$dy,$x1+$dx,$y1+$dy);
imagefilledpolygon($this->img,$pnts,count($pnts)/2,$this->current_color);
}
$this->lastx=$x2; $this->lasty=$y2;
}
function Polygon($p) {
if( $this->line_weight==0 ) return;
$n=count($p)/2;
for( $i=0; $i<$n; ++$i ) {
$j=($i+1)%$n;
$this->Line($p[$i*2],$p[$i*2+1],$p[$j*2],$p[$j*2+1]);
}
}
function FilledPolygon($pts) {
imagefilledpolygon($this->img,$pts,count($pts)/2,$this->current_color);
}
function Rectangle($xl,$yu,$xr,$yl) {
$this->Polygon(array($xl,$yu,$xr,$yu,$xr,$yl,$xl,$yl));
}
function FilledRectangle($xl,$yu,$xr,$yl) {
$this->FilledPolygon(array($xl,$yu,$xr,$yu,$xr,$yl,$xl,$yl));
}
function ShadowRectangle($xl,$yu,$xr,$yl,$fcolor=false,$shadow_width=3,$shadow_color=array(102,102,102)) {
$this->PushColor($shadow_color);
$this->FilledRectangle($xr-$shadow_width,$yu+$shadow_width,$xr,$yl);
$this->FilledRectangle($xl+$shadow_width,$yl-$shadow_width,$xr,$yl);
$this->PopColor();
if( $fcolor==false )
$this->Rectangle($xl,$yu,$xr-$shadow_width-1,$yl-$shadow_width-1);
else {
$this->PushColor($fcolor);
$this->FilledRectangle($xl,$yu,$xr-$shadow_width-1,$yl-$shadow_width-1);
$this->PopColor();
$this->Rectangle($xl,$yu,$xr-$shadow_width-1,$yl-$shadow_width-1);
}
}
function StyleLineTo($x,$y) {
$this->StyleLine($this->lastx,$this->lasty,$x,$y);
$this->lastx=$x;
$this->lasty=$y;
}
function LineTo($x,$y) {
$this->Line($this->lastx,$this->lasty,$x,$y);
$this->lastx=$x;
$this->lasty=$y;
}
function Point($x,$y) {
imagesetpixel($this->img,$x,$y,$this->current_color);
}
function Fill($x,$y) {
imagefill($this->img,$x,$y,$this->current_color);
}
function DashedLine($x1,$y1,$x2,$y2,$dash_length=1,$dash_space=4) {
// Code based on, but not identical to, work by Ariel Garza and James Pine
$line_length = ceil (sqrt(pow(($x2 - $x1),2) + pow(($y2 - $y1),2)) );
$dx = ($x2 - $x1) / $line_length;
$dy = ($y2 - $y1) / $line_length;
$lastx = $x1; $lasty = $y1;
$xmax = max($x1,$x2);
$xmin = min($x1,$x2);
$ymax = max($y1,$y2);
$ymin = min($y1,$y2);
for ($i = 0; $i < $line_length; $i += ($dash_length + $dash_space)) {
$x = ($dash_length * $dx) + $lastx;
$y = ($dash_length * $dy) + $lasty;
// The last section might overshoot so we must take a computational hit
// and check this.
if( $x>$xmax ) $x=$xmax;
if( $y>$ymax ) $y=$ymax;
if( $x<$xmin ) $x=$xmin;
if( $y<$ymin ) $y=$ymin;
$this->Line($lastx,$lasty,$x,$y);
$lastx = $x + ($dash_space * $dx);
$lasty = $y + ($dash_space * $dy);
}
}
// Generate image header
function Headers() {
if ($this->expired) {
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . "GMT");
header("Cache-Control: no-cache, must-revalidate");
header("Pragma: no-cache");
}
header("Content-type: image/$this->img_format");
}
// Adjust image quality for formats that allow this
function SetQuality($q) {
$this->quality = $q;
}
// Stream image to browser or to file
function Stream($aFile="") {
$func="image".$this->img_format;
if( $this->img_format=="jpeg" && $this->quality != null ) {
$res = @$func($this->img,$aFile,$this->quality);
}
else {
if( $aFile != "" ) {
$res = @$func($this->img,$aFile);
}
else
$res = @$func($this->img);
}
if( !$res )
JpGraphError::Raise("JpGraph Error: Can't create or stream image to file: $aFile
Check that PHP has enough permission to write a file to the current directory.");
}
// Clear resource tide up by image
function Destroy() {
imagedestroy($this->img);
}
// Specify image format. Note depending on your installation
// of PHP not all formats may be supported.
function SetImgFormat($aFormat) {
$aFormat = strtolower($aFormat);
$tst = true;
$supported = imagetypes();
if( $aFormat=="auto" ) {
if( $supported & IMG_PNG )
$this->img_format="png";
elseif( $supported & IMG_JPG )
$this->img_format="jpeg";
elseif( $supported & IMG_GIF )
$this->img_format="gif";
else
JpGraphError::Raise("JpGraph Error: Your PHP (and GD-lib) installation does not appear to support any known graphic formats.".
"You need to first make sure GD is compiled as a module to PHP. If you also want to use JPEG images".
"you must get the JPEG library. Please see the PHP docs for details.");
return true;
}
else {
if( $aFormat=="jpeg" || $aFormat=="png" || $aFormat=="gif" ) {
if( $aFormat=="jpeg" && !($supported & IMG_JPG) )
$tst=false;
elseif( $aFormat=="png" && !($supported & IMG_PNG) )
$tst=false;
elseif( $aFormat=="gif" && !($supported & IMG_GIF) )
$tst=false;
else {
$this->img_format=$aFormat;
return true;
}
}
else
$tst=false;
if( !$tst )
JpGraphError::Raise("JpGraph Error: Your PHP installation does not support the chosen graphic format: $aFormat");
}
}
} // CLASS
//===================================================
// CLASS RotImage
// Description: Exactly as Image but draws the image at
// a specified angle around a specified rotation point.
//===================================================
class RotImage extends Image {
var $m=array();
var $a=0;
var $dx=0,$dy=0,$transx=0,$transy=0;
function RotImage($aWidth,$aHeight,$a=0,$aFormat=DEFAULT_GFORMAT) {
$this->Image($aWidth,$aHeight,$aFormat);
$this->dx=$this->left_margin+$this->plotwidth/2;
$this->dy=$this->top_margin+$this->plotheight/2;
$this->SetAngle($a);
}
function SetCenter($dx,$dy) {
$old_dx = $this->dx;
$old_dy = $this->dy;
$this->dx=$dx;
$this->dy=$dy;
return array($old_dx,$old_dy);
}
function SetTranslation($dx,$dy) {
$old = array($this->transx,$this->transy);
$this->transx = $dx;
$this->transy = $dy;
return $old;
}
function SetAngle($a) {
$tmp = $this->a;
$this->a = $a;
$a *= M_PI/180;
$sa=sin($a); $ca=cos($a);
// Create the rotation matrix
$this->m[0][0] = $ca;
$this->m[0][1] = -$sa;
$this->m[0][2] = $this->dx*(1-$ca) + $sa*$this->dy ;
$this->m[1][0] = $sa;
$this->m[1][1] = $ca;
$this->m[1][2] = $this->dy*(1-$ca) - $sa*$this->dx ;
return $tmp;
}
function Circle($xc,$yc,$r) {
list($xc,$yc) = $this->Rotate($xc,$yc);
parent::Circle($xc,$yc,$r);
}
function FilledCircle($xc,$yc,$r) {
list($xc,$yc) = $this->Rotate($xc,$yc);
parent::FilledCircle($xc,$yc,$r);
}
function Arc($xc,$yc,$w,$h,$s,$e) {
list($xc,$yc) = $this->Rotate($xc,$yc);
parent::Arc($xc,$yc,$w,$h,$s,$e);
}
function FilledArc($xc,$yc,$w,$h,$s,$e) {
list($xc,$yc) = $this->Rotate($xc,$yc);
parent::FilledArc($xc,$yc,$w,$h,$s,$e);
}
function SetMargin($lm,$rm,$tm,$bm) {
parent::SetMargin($lm,$rm,$tm,$bm);
$this->SetAngle($this->a);
}
function Rotate($x,$y) {
$x1=round($this->m[0][0]*$x + $this->m[0][1]*$y + $this->m[0][2] + $this->transx);
$y1=round($this->m[1][0]*$x + $this->m[1][1]*$y + $this->m[1][2] + $this->transy);
return array($x1,$y1);
}
function ArrRotate($pnts) {
for($i=0; $i < count($pnts)-1; $i+=2)
list($pnts[$i],$pnts[$i+1]) = $this->Rotate($pnts[$i],$pnts[$i+1]);
return $pnts;
}
function Line($x1,$y1,$x2,$y2) {
list($x1,$y1) = $this->Rotate($x1,$y1);
list($x2,$y2) = $this->Rotate($x2,$y2);
parent::Line($x1,$y1,$x2,$y2);
}
function Rectangle($x1,$y1,$x2,$y2) {
$this->Polygon(array($x1,$y1,$x2,$y1,$x2,$y2,$x1,$y2));
}
function FilledRectangle($x1,$y1,$x2,$y2) {
if( $y1==$y2 || $x1==$x2 )
$this->Line($x1,$y1,$x2,$y2);
else
$this->FilledPolygon(array($x1,$y1,$x2,$y1,$x2,$y2,$x1,$y2));
}
function Polygon($pnts) {
//Polygon uses Line() so it will be rotated through that call
parent::Polygon($pnts);
}
function FilledPolygon($pnts) {
parent::FilledPolygon($this->ArrRotate($pnts));
}
function Point($x,$y) {
list($xp,$yp) = $this->Rotate($x,$y);
parent::Point($xp,$yp);
}
function DashedLine($x1,$y1,$x2,$y2,$length=1,$space=4) {
list($x1,$y1) = $this->Rotate($x1,$y1);
list($x2,$y2) = $this->Rotate($x2,$y2);
parent::DashedLine($x1,$y1,$x2,$y2,$length,$space);
}
function StrokeText($x,$y,$txt,$dir=0,$paragraph_align="left") {
list($xp,$yp) = $this->Rotate($x,$y);
parent::StrokeText($xp,$yp,$txt,$dir,$paragraph_align);
}
}
//===================================================
// CLASS ImgStreamCache
// Description: Handle caching of graphs to files
//===================================================
class ImgStreamCache {
var $cache_dir;
var $img=null;
var $timeout=0; // Infinite timeout
//---------------
// CONSTRUCTOR
function ImgStreamCache(&$aImg, $aCacheDir=CACHE_DIR) {
$this->img = &$aImg;
$this->cache_dir = $aCacheDir;
}
//---------------
// PUBLIC METHODS
// Specify a timeout (in minutes) for the file. If the file is older then the
// timeout value it will be overwritten with a newer version.
// If timeout is set to 0 this is the same as infinite large timeout and if
// timeout is set to -1 this is the same as infinite small timeout
function SetTimeout($aTimeout) {
$this->timeout=$aTimeout;
}
// Output image to browser and also write it to the cache
function PutAndStream(&$aImage,$aCacheFileName,$aInline,$aStrokeFileName) {
// Some debugging code to brand the image with numbe of colors
// used
if( JPG_DEBUG ) {
$c=$aImage->SetColor("black");
$t=imagecolorstotal($this->img->img);
imagestring($this->img->img,2,5,$this->img->height-20,$t,$c);
}
if( BRAND_TIMING ) {
global $tim;
$t=$tim->Pop()/1000.0;
$c=$aImage->SetColor("black");
$t=sprintf(BRAND_TIME_FORMAT,round($t,3));
imagestring($this->img->img,2,5,$this->img->height-20,$t,$c);
}
// Check if we should stroke the image to an arbitrary file
if( $aStrokeFileName!="" ) {
if( $aStrokeFileName == "auto" )
$aStrokeFileName = GenImgName();
if( file_exists($aStrokeFileName) ) {
// Delete the old file
if( !@unlink($aStrokeFileName) )
JpGraphError::Raise("JpGraph Error: Can't delete cached image $aStrokeFileName. Permission problem?");
}
$aImage->Stream($aStrokeFileName);
return;
}
if( $aCacheFileName != "" && USE_CACHE) {
$aCacheFileName = $this->cache_dir . $aCacheFileName;
if( file_exists($aCacheFileName) ) {
if( !$aInline ) {
// If we are generating image off-line (just writing to the cache)
// and the file exists and is still valid (no timeout)
// then do nothing, just return.
$diff=time()-filemtime($aCacheFileName);
if( $diff < 0 )
JpGraphError::Raise("JpGraph Error: Cached imagefile ($aCacheFileName) has file date in the future!!");
if( $this->timeout>0 && ($diff <= $this->timeout*60) )
return;
}
if( !@unlink($aCacheFileName) )
JpGraphError::Raise("JpGraph Error: Can't delete cached image $aStrokeFileName. Permission problem?");
$aImage->Stream($aCacheFileName);
}
else {
$this->_MakeDirs(dirname($aCacheFileName));
$aImage->Stream($aCacheFileName);
}
$res=true;
// Set group to specified
if( CACHE_FILE_GROUP != "" )
$res = @chgrp($aCacheFileName,CACHE_FILE_GROUP);
if( CACHE_FILE_MOD != "" )
$res = @chmod($aCacheFileName,CACHE_FILE_MOD);
if( !$res )
JpGraphError::Raise("JpGraph Error: Can't set permission for cached image $aStrokeFileName. Permission problem?");
$aImage->Destroy();
if( $aInline ) {
if ($fh = @fopen($aCacheFileName, "rb") ) {
$this->img->Headers();
fpassthru($fh);
return;
}
else
JpGraphError::Raise("JpGraph Error: Cant open file from cache [$aFile]");
}
}
elseif( $aInline ) {
$this->img->Headers();
$aImage->Stream();
return;
}
}
// Check if a given image is in cache and in that case
// pass it directly on to web browser. Return false if the
// image file doesn't exist or exists but is to old
function GetAndStream($aCacheFileName) {
$aCacheFileName = $this->cache_dir.$aCacheFileName;
if ( USE_CACHE && file_exists($aCacheFileName) && $this->timeout>=0 ) {
$diff=time()-filemtime($aCacheFileName);
if( $this->timeout>0 && ($diff > $this->timeout*60) ) {
return false;
}
else {
if ($fh = @fopen($aCacheFileName, "rb")) {
$this->img->Headers();
fpassthru($fh);
fclose($fh);
return true;
}
else
JpGraphError::Raise("JpGraph Error: Can't open cached image \"$aCacheFileName\" for reading.");
}
}
return false;
}
//---------------
// PRIVATE METHODS
// Create all necessary directories in a path
function _MakeDirs($aFile) {
$dirs = array();
while (! (file_exists($aFile))) {
$dirs[] = $aFile;
$aFile = dirname($aFile);
}
for ($i = sizeof($dirs)-1; $i>=0; $i--) {
if(! @mkdir($dirs[$i],0777) )
JpGraphError::Raise("JpGraph Error: Can't create directory in $aFile. Permission problems?");
// We also specify mode here after we have changed group.
// This is necessary if Apache user doesn't belong the
// default group and hence can't specify group permission
// in the previous mkdir() call
if( CACHE_FILE_GROUP != "" ) {
$res=true;
$res =@chgrp($dirs[$i],CACHE_FILE_GROUP);
$res &= @chmod($dirs[$i],0777);
if( !$res )
JpGraphError::Raise("JpGraph Error: Can't set permissions for $aFile. Permission problems?");
}
}
return true;
}
} // CLASS Cache
//===================================================
// CLASS Legend
// Description: Responsible for drawing the box containing
// all the legend text for the graph
//===================================================
class Legend {
var $color=array(0,0,0); // Default fram color
var $fill_color=array(235,235,235); // Default fill color
var $shadow=true; // Shadow around legend "box"
var $txtcol=array();
var $mark_abs_size=10,$xmargin=5,$ymargin=5,$shadow_width=2;
var $xpos=0.05, $ypos=0.15, $halign="right", $valign="top";
var $font_family=FF_FONT1,$font_style=FS_NORMAL,$font_size=12;
var $hide=false,$layout=LEGEND_VERT;
var $weight=1;
//---------------
// CONSTRUCTOR
function Legend() {
// Empty
}
//---------------
// PUBLIC METHODS
function Hide($aHide=true) {
$this->hide=$aHide;
}
function SetShadow($aShow=true,$aWidth=2) {
$this->shadow=$aShow;
$this->shadow_width=$aWidth;
}
function SetLineWeight($aWeight) {
$this->weight = $aWeight;
}
function SetLayout($aDirection=LEGEND_VERT) {
$this->layout=$aDirection;
}
// Set color on frame around box
function SetColor($aColor) {
$this->color=$aColor;
}
function SetFont($aFamily,$aStyle=FS_NORMAL,$aSize=10) {
$this->font_family = $aFamily;
$this->font_style = $aStyle;
$this->font_size = $aSize;
}
function Pos($aX,$aY,$aHAlign="right",$aVAlign="top") {
if( !($aX<1 && $aY<1) )
JpGraphError::Raise("JpGraph Error: Position for legend must be given as percentage in range 0-1");
$this->xpos=$aX;
$this->ypos=$aY;
$this->halign=$aHAlign;
$this->valign=$aVAlign;
}
function SetBackground($aDummy) {
JpGraphError::Raise("JpGraph Error: Deprecated function Legend::SetBaqckground() use Legend::SetFillColor() instead.");
}
function SetFillColor($aColor) {
$this->fill_color=$aColor;
}
function Add($aTxt,$aColor,$aPlotmark="",$aLinestyle=1) {
$this->txtcol[]=array($aTxt,$aColor,$aPlotmark,$aLinestyle);
}
function Stroke(&$aImg) {
if( $this->hide ) return;
$nbrplots=count($this->txtcol);
if( $nbrplots==0 ) return;
$aImg->SetFont($this->font_family,$this->font_style,$this->font_size);
if( $this->layout==LEGEND_VERT )
$abs_height=$aImg->GetFontHeight() + $this->mark_abs_size*$nbrplots +
$this->ymargin*($nbrplots-1);
else
$abs_height=2*$this->mark_abs_size+$this->ymargin;
if( $this->shadow ) $abs_height += $this->shadow_width;
$mtw=0;
foreach($this->txtcol as $p) {
if( $this->layout==LEGEND_VERT )
$mtw=max($mtw,$aImg->GetTextWidth($p[0]));
else
$mtw+=$aImg->GetTextWidth($p[0])+$this->mark_abs_size+$this->xmargin;
}
$abs_width=$mtw+2*$this->mark_abs_size+2*$this->xmargin;
if( $this->halign=="left" )
$xp=$this->xpos*$aImg->width;
elseif( $this->halign=="center" )
$xp=$this->xpos*$aImg->width - $abs_width/2;
else
$xp = $aImg->width - $this->xpos*$aImg->width - $abs_width;
$yp=$this->ypos*$aImg->height;
if( $this->valign=="center" )
$yp-=$abs_height/2;
elseif( $this->valign=="bottom" )
$yp-=$abs_height;
$aImg->SetColor($this->color);
$aImg->SetLineWeight($this->weight);
if( $this->shadow )
$aImg->ShadowRectangle($xp,$yp,$xp+$abs_width,$yp+$abs_height,$this->fill_color,$this->shadow_width);
else {
$aImg->SetColor($this->fill_color);
$aImg->FilledRectangle($xp,$yp,$xp+$abs_width,$yp+$abs_height);
$aImg->SetColor($this->color);
$aImg->Rectangle($xp,$yp,$xp+$abs_width,$yp+$abs_height);
}
$aImg->SetLineWeight(1);
$x1=$xp+$this->mark_abs_size/2;
$y1=$yp+$aImg->GetFontHeight()*0.5;
foreach($this->txtcol as $p) {
$aImg->SetColor($p[1]);
if ( $p[2] != "" && $p[2]->GetType() > -1 ) {
$p[2]->Stroke($aImg,$x1+$this->mark_abs_size/2,$y1+$aImg->GetFontHeight()/2);
}
elseif ( $p[2] != "" ) {
$aImg->SetLineStyle($p[3]);
$aImg->StyleLine($x1,$y1+$aImg->GetFontHeight()/2,$x1+$this->mark_abs_size,$y1+$aImg->GetFontHeight()/2);
$aImg->StyleLine($x1,$y1+$aImg->GetFontHeight()/2-1,$x1+$this->mark_abs_size,$y1+$aImg->GetFontHeight()/2-1);
}
else {
$aImg->FilledRectangle($x1,$y1,$x1+$this->mark_abs_size,$y1+$this->mark_abs_size);
$aImg->SetColor($this->color);
$aImg->Rectangle($x1,$y1,$x1+$this->mark_abs_size,$y1+$this->mark_abs_size);
}
$aImg->SetColor($this->color);
$aImg->SetTextAlign("left");
$aImg->StrokeText($x1+$this->mark_abs_size+$this->xmargin,$y1+$this->mark_abs_size,$p[0]);
if( $this->layout==LEGEND_VERT )
$y1 += $this->ymargin+$this->mark_abs_size;
else
$x1 += 2*$this->ymargin+$this->mark_abs_size+$aImg->GetTextWidth($p[0]);
}
}
} // Class
//===================================================
// CLASS Plot
// Description: Abstract base class for all concrete plot classes
//===================================================
class Plot {
var $line_weight=1;
var $coords=array();
var $legend="";
var $csimtargets=array(); // Array of targets for CSIM
var $csimareas=""; // Resultant CSIM area tags
var $csimalts=null; // ALT:s for corresponding target
var $color="black";
var $numpoints=0;
var $weight=1;
//---------------
// CONSTRUCTOR
function Plot(&$aDatay,$aDatax=false) {
$this->numpoints = count($aDatay);
if( $this->numpoints==0 )
JpGraphError::Raise("JpGraph Error: Empty data array specified for plot. Must have at least one data point.");
$this->coords[0]=$aDatay;
if( is_array($aDatax) )
$this->coords[1]=$aDatax;
}
//---------------
// PUBLIC METHODS
// Stroke the plot
// "virtual" function which must be implemented by
// the subclasses
function Stroke(&$aImg,&$aXScale,&$aYScale) {
JpGraphError::Raise("JpGraph: Stroke() must be implemented by concrete subclass to class Plot");
}
// Set href targets for CSIM
function SetCSIMTargets(&$aTargets,$aAlts=null) {
$this->csimtargets=$aTargets;
$this->csimalts=$aAlts;
}
// Get all created areas
function GetCSIMareas() {
return $this->csimareas;
}
// "Virtual" function which gets called before any scale
// or axis are stroked used to do any plot specific adjustment
function PreStrokeAdjust(&$aGraph) {
if( substr($aGraph->axtype,0,4) == "text" && (isset($this->coords[1])) )
JpGraphError::Raise("JpGraph: You can't use a text X-scale with specified X-coords. Use a \"int\" or \"lin\" scale instead.");
return true;
}
function SetWeight($aWeight) {
$this->weight=$aWeight;
}
// Get minimum values in plot
function Min() {
if( isset($this->coords[1]) )
$x=$this->coords[1];
else
$x="";
if( $x != "" && count($x) > 0 )
$xm=min($x);
else
$xm=0;
$y=$this->coords[0];
if( count($y) > 0 ) {
$ym = $y[0];
$cnt = count($y);
$i=0;
while( $i<$cnt && !is_numeric($ym=$y[$i]) )
$i++;
while( $i < $cnt) {
if( is_numeric($y[$i]) )
$ym=min($ym,$y[$i]);
++$i;
}
}
else
$ym="";
return array($xm,$ym);
}
// Get maximum value in plot
function Max() {
if( isset($this->coords[1]) )
$x=$this->coords[1];
else
$x="";
if( $x!="" && count($x) > 0 )
$xm=max($x);
else
$xm=count($this->coords[0])-1; // We count from 0..(n-1)
$y=$this->coords[0];
if( count($y) > 0 ) {
if( !isset($y[0]) ) {
$y[0] = 0;
// Change in 1.5.1 Don't treat this as an error any more. Just silently concert to 0
// JpGraphError::Raise("JpGraph Error: You have not specified a y[0] value!!");
}
$cnt = count($y);
$i=0;
while( $i<$cnt && !is_numeric($ym=$y[$i]) )
$i++;
while( $i < $cnt ) {
if( is_numeric($y[$i]) ) $ym=max($ym,$y[$i]);
++$i;
}
}
else
$ym="";
return array($xm,$ym);
}
function SetColor($aColor) {
$this->color=$aColor;
}
function SetLegend($aLegend) {
$this->legend = $aLegend;
}
function SetLineWeight($aWeight=1) {
$this->line_weight=$aWeight;
}
// This method gets called by Graph class to plot anything that should go
// into the margin after the margin color has been set.
function StrokeMargin(&$aImg) {
return true;
}
// Framework function the chance for each plot class to set a legend
function Legend(&$aGraph) {
if( $this->legend!="" )
$aGraph->legend->Add($this->legend,$this->color);
}
} // Class
//===================================================
// CLASS PlotMark
// Description: Handles the plot marks in graphs
// mostly used in line and scatter plots.
//===================================================
class PlotMark {
var $title, $show=true;
var $type=-1, $weight=1;
var $color="black", $width=5, $fill_color="blue";
// --------------
// CONSTRUCTOR
function PlotMark() {
$this->title = new Text();
$this->title->Hide();
}
//---------------
// PUBLIC METHODS
function SetType($t) {
$this->type = $t;
}
function GetType() {
return $this->type;
}
function SetColor($c) {
$this->color=$c;
}
function SetFillColor($c) {
$this->fill_color = $c;
}
function SetWidth($w) {
$this->width=$w;
}
function GetWidth() {
return $this->width;
}
function Hide($aHide=true) {
$this->show = !$aHide;
}
function Show($aShow=true) {
$this->show = $aShow;
}
function Stroke(&$img,$x,$y) {
if( !$this->show ) return;
$dx=round($this->width/2,0);
$dy=round($this->width/2,0);
$pts=0;
switch( $this->type ) {
case MARK_SQUARE:
$c[]=$x-$dx;$c[]=$y-$dy;
$c[]=$x+$dx;$c[]=$y-$dy;
$c[]=$x+$dx;$c[]=$y+$dy;
$c[]=$x-$dx;$c[]=$y+$dy;
$pts=4;
break;
case MARK_UTRIANGLE:
++$dx;++$dy;
$c[]=$x-$dx;$c[]=$y+0.87*$dy; // tan(60)/2*$dx
$c[]=$x;$c[]=$y-0.87*$dy;
$c[]=$x+$dx;$c[]=$y+0.87*$dy;
$pts=3;
break;
case MARK_DTRIANGLE:
++$dx;++$dy;
$c[]=$x;$c[]=$y+0.87*$dy; // tan(60)/2*$dx
$c[]=$x-$dx;$c[]=$y-0.87*$dy;
$c[]=$x+$dx;$c[]=$y-0.87*$dy;
$pts=3;
break;
case MARK_DIAMOND:
$c[]=$x;$c[]=$y+$dy;
$c[]=$x-$dx;$c[]=$y;
$c[]=$x;$c[]=$y-$dy;
$c[]=$x+$dx;$c[]=$y;
$pts=4;
break;
}
if( $pts>0 ) {
$img->SetLineWeight($this->weight);
$img->SetColor($this->fill_color);
$img->FilledPolygon($c);
$img->SetColor($this->color);
$img->Polygon($c);
}
elseif( $this->type==MARK_CIRCLE ) {
$img->SetColor($this->color);
$img->Circle($x,$y,$this->width);
}
elseif( $this->type==MARK_FILLEDCIRCLE ) {
$img->SetColor($this->fill_color);
$img->FilledCircle($x,$y,$this->width);
$img->SetColor($this->color);
$img->Circle($x,$y,$this->width);
}
elseif( $this->type==MARK_CROSS ) {
// Oversize by a pixel to match the X
$img->SetColor($this->color);
$img->SetLineWeight($this->weight);
$img->Line($x,$y+$dy+1,$x,$y-$dy-1);
$img->Line($x-$dx-1,$y,$x+$dx+1,$y);
}
elseif( $this->type==MARK_X ) {
$img->SetColor($this->color);
$img->SetLineWeight($this->weight);
$img->Line($x+$dx,$y+$dy,$x-$dx,$y-$dy);
$img->Line($x-$dx,$y+$dy,$x+$dx,$y-$dy);
}
elseif( $this->type==MARK_STAR ) {
$img->SetColor($this->color);
$img->SetLineWeight($this->weight);
$img->Line($x+$dx,$y+$dy,$x-$dx,$y-$dy);
$img->Line($x-$dx,$y+$dy,$x+$dx,$y-$dy);
// Oversize by a pixel to match the X
$img->Line($x,$y+$dy+1,$x,$y-$dy-1);
$img->Line($x-$dx-1,$y,$x+$dx+1,$y);
}
// Stroke title
$this->title->Align("center","center");
$this->title->Stroke($img,$x,$y);
}
} // Class
//==============================================================================
// The following section contains classes to implement the "band" functionality
//==============================================================================
// Utility class to hold coordinates for a rectangle
class Rectangle {
var $x,$y,$w,$h;
var $xe, $ye;
function Rectangle($aX,$aY,$aWidth,$aHeight) {
$this->x=$aX;
$this->y=$aY;
$this->w=$aWidth;
$this->h=$aHeight;
$this->xe=$aX+$aWidth-1;
$this->ye=$aY+$aHeight-1;
}
}
//=====================================================================
// Class RectPattern
// Base class for pattern hierarchi that is used to display patterned
// bands on the graph. Any subclass that doesn't override Stroke()
// must at least implement method DoPattern(&$aImg) which is responsible
// for drawing the pattern onto the graph.
//=====================================================================
class RectPattern {
var $color;
var $weight;
var $rect=null;
var $doframe=true;
var $linespacing; // Line spacing in pixels
var $iBackgroundColor=-1; // Default is no background fill
function RectPattern($aColor,$aWeight=1) {
$this->color = $aColor;
$this->weight = $aWeight;
}
function SetBackground($aBackgroundColor) {
$this->iBackgroundColor=$aBackgroundColor;
}
function SetPos(&$aRect) {
$this->rect = $aRect;
}
function ShowFrame($aShow=true) {
$this->doframe=$aShow;
}
function SetDensity($aDens) {
if( $aDens <1 || $aDens > 100 )
JpGraphError::Raise("JpGraph Error: Desity for pattern must be between 1 and 100. (You tried $aDens)");
// 1% corresponds to linespacing=50
// 100 % corresponds to linespacing 1
$this->linespacing = floor(((100-$aDens)/100.0)*50)+1;
}
function Stroke(&$aImg) {
if( $this->rect == null )
JpGraphError::Raise("JpGraph Error: No positions specified for pattern.");
if( !(is_numeric($this->iBackgroundColor) && $this->iBackgroundColor==-1) ) {
$aImg->SetColor($this->iBackgroundColor);
$aImg->FilledRectangle($this->rect->x,$this->rect->y,$this->rect->xe,$this->rect->ye);
}
$aImg->SetColor($this->color);
$aImg->SetLineWeight($this->weight);
// Virtual function implemented by subclass
$this->DoPattern($aImg);
// Frame around the pattern area
if( $this->doframe )
$aImg->Rectangle($this->rect->x,$this->rect->y,$this->rect->xe,$this->rect->ye);
}
}
//=====================================================================
// Class RectPatternSolid
// Implements a solid band
//=====================================================================
class RectPatternSolid extends RectPattern {
function RectPatternSolid($aColor="black",$aWeight=1) {
parent::RectPattern($aColor,$aWeight);
}
function Stroke(&$aImg) {
$aImg->SetColor($this->color);
$aImg->FilledRectangle($this->rect->x,$this->rect->y,
$this->rect->xe,$this->rect->ye);
}
}
//=====================================================================
// Class RectPatternHor
// Implements horizontal line pattern
//=====================================================================
class RectPatternHor extends RectPattern {
function RectPatternHor($aColor="black",$aWeight=1,$aLineSpacing=7) {
parent::RectPattern($aColor,$aWeight);
$this->linespacing = $aLineSpacing;
}
function DoPattern(&$aImg) {
$x0 = $this->rect->x;
$x1 = $this->rect->xe;
$y = $this->rect->y;
while( $y < $this->rect->ye ) {
$aImg->Line($x0,$y,$x1,$y);
$y += $this->linespacing;
}
}
}
//=====================================================================
// Class RectPatternVert
// Implements vertical line pattern
//=====================================================================
class RectPatternVert extends RectPattern {
var $linespacing=10; // Line spacing in pixels
function RectPatternVert($aColor="black",$aWeight=1,$aLineSpacing=7) {
parent::RectPattern($aColor,$aWeight);
$this->linespacing = $aLineSpacing;
}
//--------------------
// Private methods
//
function DoPattern(&$aImg) {
$x = $this->rect->x;
$y0 = $this->rect->y;
$y1 = $this->rect->ye;
while( $x < $this->rect->xe ) {
$aImg->Line($x,$y0,$x,$y1);
$x += $this->linespacing;
}
}
}
//=====================================================================
// Class RectPatternRDiag
// Implements right diagonal pattern
//=====================================================================
class RectPatternRDiag extends RectPattern {
var $linespacing; // Line spacing in pixels
function RectPatternRDiag($aColor="black",$aWeight=1,$aLineSpacing=12) {
parent::RectPattern($aColor,$aWeight);
$this->linespacing = $aLineSpacing;
}
function DoPattern(&$aImg) {
// --------------------
// | / / / / /|
// |/ / / / / |
// | / / / / |
// --------------------
$xe = $this->rect->xe;
$ye = $this->rect->ye;
$x0 = $this->rect->x + round($this->linespacing/2);
$y0 = $this->rect->y;
$x1 = $this->rect->x;
$y1 = $this->rect->y + round($this->linespacing/2);
while($x0<=$xe && $y1<=$ye) {
$aImg->Line($x0,$y0,$x1,$y1);
$x0 += $this->linespacing;
$y1 += $this->linespacing;
}
$x1 = $this->rect->x + ($y1-$ye);
//$x1 = $this->rect->x +$this->linespacing;
$y0=$this->rect->y; $y1=$ye;
while( $x0 <= $xe ) {
$aImg->Line($x0,$y0,$x1,$y1);
$x0 += $this->linespacing;
$x1 += $this->linespacing;
}
$y0=$this->rect->y + ($x0-$xe);
$x0=$xe;
while( $y0 <= $ye ) {
$aImg->Line($x0,$y0,$x1,$y1);
$y0 += $this->linespacing;
$x1 += $this->linespacing;
}
}
}
//=====================================================================
// Class RectPatternLDiag
// Implements left diagonal pattern
//=====================================================================
class RectPatternLDiag extends RectPattern {
var $linespacing; // Line spacing in pixels
function RectPatternLDiag($aColor="black",$aWeight=1,$aLineSpacing=12) {
$this->linespacing = $aLineSpacing;
parent::RectPattern($aColor,$aWeight);
}
function DoPattern(&$aImg) {
// --------------------
// |\ \ \ \ \ |
// | \ \ \ \ \|
// | \ \ \ \ |
// |------------------|
$xe = $this->rect->xe;
$ye = $this->rect->ye;
$x0 = $this->rect->x + round($this->linespacing/2);
$y0 = $this->rect->ye;
$x1 = $this->rect->x;
$y1 = $this->rect->ye - round($this->linespacing/2);
while($x0<=$xe && $y1>=$this->rect->y) {
$aImg->Line($x0,$y0,$x1,$y1);
$x0 += $this->linespacing;
$y1 -= $this->linespacing;
}
$x1 = $this->rect->x + ($this->rect->y-$y1);
$y0=$ye; $y1=$this->rect->y;
while( $x0 <= $xe ) {
$aImg->Line($x0,$y0,$x1,$y1);
$x0 += $this->linespacing;
$x1 += $this->linespacing;
}
$y0=$this->rect->ye - ($x0-$xe);
$x0=$xe;
while( $y0 >= $this->rect->y ) {
$aImg->Line($x0,$y0,$x1,$y1);
$y0 -= $this->linespacing;
$x1 += $this->linespacing;
}
}
}
//=====================================================================
// Class RectPattern3DPlane
// Implements "3D" plane pattern
//=====================================================================
class RectPattern3DPlane extends RectPattern {
var $alpha=50; // Parameter that specifies the distance
// to "simulated" horizon in pixel from the
// top of the band. Specifies how fast the lines
// converge.
function RectPattern3DPlane($aColor="black",$aWeight=1) {
parent::RectPattern($aColor,$aWeight);
$this->SetDensity(10); // Slightly larger default
}
function SetHorizon($aHorizon) {
$this->alpha=$aHorizon;
}
function DoPattern(&$aImg) {
// "Fake" a nice 3D grid-effect.
$x0 = $this->rect->x + $this->rect->w/2;
$y0 = $this->rect->y;
$x1 = $x0;
$y1 = $this->rect->ye;
$x0_right = $x0;
$x1_right = $x1;
// BTW "apa" means monkey in Swedish but is really a shortform for
// "alpha+a" which was the labels I used on paper when I derived the
// geometric to get the 3D perspective right.
// $apa is the height of the bounding rectangle plus the distance to the
// artifical horizon (alpha)
$apa = $this->rect->h + $this->alpha;
// Three cases and three loops
// 1) The endpoint of the line ends on the bottom line
// 2) The endpoint ends on the side
// 3) Horizontal lines
// Endpoint falls on bottom line
$middle=$this->rect->x + $this->rect->w/2;
$dist=$this->linespacing;
$factor=$this->alpha /($apa);
while($x1>$this->rect->x) {
$aImg->Line($x0,$y0,$x1,$y1);
$aImg->Line($x0_right,$y0,$x1_right,$y1);
$x1 = $middle - $dist;
$x0 = $middle - $dist * $factor;
$x1_right = $middle + $dist;
$x0_right = $middle + $dist * $factor;
$dist += $this->linespacing;
}
// Endpoint falls on sides
$dist -= $this->linespacing;
$d=$this->rect->w/2;
$c = $apa - $d*$apa/$dist;
while( $x0>$this->rect->x ) {
$aImg->Line($x0,$y0,$this->rect->x,$this->rect->ye-$c);
$aImg->Line($x0_right,$y0,$this->rect->xe,$this->rect->ye-$c);
$dist += $this->linespacing;
$x0 = $middle - $dist * $factor;
$x1 = $middle - $dist;
$x0_right = $middle + $dist * $factor;
$c = $apa - $d*$apa/$dist;
}
// Horizontal lines
// They need some serious consideration since they are a function
// of perspective depth (alpha) and density (linespacing)
$x0=$this->rect->x;
$x1=$this->rect->xe;
$y=$this->rect->ye;
// The first line is drawn directly. Makes the loop below slightly
// more readable.
$aImg->Line($x0,$y,$x1,$y);
$hls = $this->linespacing;
// A correction factor for vertical "brick" line spacing to account for
// a) the difference in number of pixels hor vs vert
// b) visual apperance to make the first layer of "bricks" look more
// square.
$vls = $this->linespacing*0.6;
$ds = $hls*($apa-$vls)/$apa;
// Get the slope for the "perspective line" going from bottom right
// corner to top left corner of the "first" brick.
// Uncomment the following lines if you want to get a visual understanding
// of what this helpline does. BTW this mimics the way you would get the
// perspective right when drawing on paper.
/*
$x0 = $middle;
$y0 = $this->rect->ye;
$len=floor(($this->rect->ye-$this->rect->y)/$vls);
$x1 = $middle-round($len*$ds);
$y1 = $this->rect->ye-$len*$vls;
$aImg->PushColor("red");
$aImg->Line($x0,$y0,$x1,$y1);
$aImg->PopColor();
*/
$y -= $vls;
$k=($this->rect->ye-($this->rect->ye-$vls))/($middle-($middle-$ds));
$dist = $hls;
while( $y>$this->rect->y ) {
$aImg->Line($this->rect->x,$y,$this->rect->xe,$y);
$adj = $k*$dist/(1+$dist*$k/$apa);
if( $adj < 2 ) $adj=2;
$y = $this->rect->ye - round($adj);
$dist += $hls;
}
}
}
//=====================================================================
// Class RectPatternCross
// Vert/Hor crosses
//=====================================================================
class RectPatternCross extends RectPattern {
var $vert=null;
var $hor=null;
function RectPatternCross($aColor="black",$aWeight=1) {
parent::RectPattern($aColor,$aWeight);
$this->vert = new RectPatternVert($aColor,$aWeight);
$this->hor = new RectPatternHor($aColor,$aWeight);
}
function SetOrder($aDepth) {
$this->vert->SetOrder($aDepth);
$this->hor->SetOrder($aDepth);
}
function SetPos(&$aRect) {
parent::SetPos($aRect);
$this->vert->SetPos($aRect);
$this->hor->SetPos($aRect);
}
function SetDensity($aDens) {
$this->vert->SetDensity($aDens);
$this->hor->SetDensity($aDens);
}
function DoPattern(&$aImg) {
$this->vert->DoPattern($aImg);
$this->hor->DoPattern($aImg);
}
}
//=====================================================================
// Class RectPatternDiagCross
// Vert/Hor crosses
//=====================================================================
class RectPatternDiagCross extends RectPattern {
var $left=null;
var $right=null;
function RectPatternDiagCross($aColor="black",$aWeight=1) {
parent::RectPattern($aColor,$aWeight);
$this->right = new RectPatternRDiag($aColor,$aWeight);
$this->left = new RectPatternLDiag($aColor,$aWeight);
}
function SetOrder($aDepth) {
$this->left->SetOrder($aDepth);
$this->right->SetOrder($aDepth);
}
function SetPos(&$aRect) {
parent::SetPos($aRect);
$this->left->SetPos($aRect);
$this->right->SetPos($aRect);
}
function SetDensity($aDens) {
$this->left->SetDensity($aDens);
$this->right->SetDensity($aDens);
}
function DoPattern(&$aImg) {
$this->left->DoPattern($aImg);
$this->right->DoPattern($aImg);
}
}
//=====================================================================
// Class RectPatternFactory
// Factory class for rectangular pattern
//=====================================================================
class RectPatternFactory {
function RectPatternFactory() {
// Empty
}
function Create($aPattern,$aColor,$aWeight=1) {
switch($aPattern) {
case BAND_RDIAG:
$obj = new RectPatternRDiag($aColor,$aWeight);
break;
case BAND_LDIAG:
$obj = new RectPatternLDiag($aColor,$aWeight);
break;
case BAND_SOLID:
$obj = new RectPatternSolid($aColor,$aWeight);
break;
case BAND_LVERT:
$obj = new RectPatternVert($aColor,$aWeight);
break;
case BAND_LHOR:
$obj = new RectPatternHor($aColor,$aWeight);
break;
case BAND_3DPLANE:
$obj = new RectPattern3DPlane($aColor,$aWeight);
break;
case BAND_HVCROSS:
$obj = new RectPatternCross($aColor,$aWeight);
break;
case BAND_DIAGCROSS:
$obj = new RectPatternDiagCross($aColor,$aWeight);
break;
default:
JpGraphError::Raise("JpGraph Error: Unknown pattern specification ($aPattern)");
}
return $obj;
}
}
//=====================================================================
// Class PlotBand
// Factory class which is used by the client.
// It is reposnsible for factoring the corresponding pattern
// concrete class.
//=====================================================================
class PlotBand {
var $prect=null;
var $depth;
function PlotBand($aDir,$aPattern,$aMin,$aMax,$aColor="black",$aWeight=1,$aDepth=DEPTH_BACK) {
$f = new RectPatternFactory();
$this->prect = $f->Create($aPattern,$aColor,$aWeight);
$this->dir = $aDir;
$this->min = $aMin;
$this->max = $aMax;
$this->depth=$aDepth;
}
// Set position. aRect contains absolute image coordinates
function SetPos(&$aRect) {
assert( $this->prect != null ) ;
$this->prect->SetPos($aRect);
}
function ShowFrame($aFlag=true) {
$this->prect->ShowFrame($aFlag);
}
// Set z-order. In front of pplot or in the back
function SetOrder($aDepth) {
$this->depth=$aDepth;
}
function SetDensity($aDens) {
$this->prect->SetDensity($aDens);
}
function GetDir() {
return $this->dir;
}
function GetMin() {
return $this->min;
}
function GetMax() {
return $this->max;
}
// Display band
function Stroke(&$aImg,&$aXScale,&$aYScale) {
assert( $this->prect != null ) ;
if( $this->dir == HORIZONTAL ) {
if( !is_numeric($this->min) && $this->min == "min" ) $this->min = $aYScale->GetMinVal();
if( !is_numeric($this->max) && $this->max == "max" ) $this->max = $aYScale->GetMaxVal();
$x=$aXScale->scale_abs[0];
$y=$aYScale->Translate($this->max);
$width=$aXScale->scale_abs[1]-$aXScale->scale_abs[0]+1;
$height=abs($y-$aYScale->Translate($this->min))+1;
$this->prect->SetPos(new Rectangle($x,$y,$width,$height));
}
else { // VERTICAL
if( !is_numeric($this->min) && $this->min == "min" ) $this->min = $aXScale->GetMinVal();
if( !is_numeric($this->max) && $this->max == "max" ) $this->max = $aXScale->GetMaxVal();
$y=$aYScale->scale_abs[1];
$x=$aXScale->Translate($this->min);
$height=abs($aYScale->scale_abs[1]-$aYScale->scale_abs[0]);
$width=abs($x-$aXScale->Translate($this->max));
$this->prect->SetPos(new Rectangle($x,$y,$width,$height));
}
$this->prect->Stroke($aImg);
}
}
//===================================================
// CLASS PlotLine
// Description:
// Data container class to hold properties for a static
// line that is drawn directly in the plot area.
// Usefull to add static borders inside a plot to show
// for example set-values
//===================================================
class PlotLine {
var $weight=1;
var $color="black";
var $direction=-1;
var $scaleposition;
//---------------
// CONSTRUCTOR
function PlotLine($aDir=HORIZONTAL,$aPos=0,$aColor="black",$aWeight=1) {
$this->direction = $aDir;
$this->color=$aColor;
$this->weight=$aWeight;
$this->scaleposition=$aPos;
}
//---------------
// PUBLIC METHODS
function SetPosition($aScalePosition) {
$this->scaleposition=$aScalePosition;
}
function SetDirection($aDir) {
$this->direction = $aDir;
}
function SetColor($aColor) {
$this->color=$aColor;
}
function SetWeight($aWeight) {
$this->weight=$aWeight;
}
function Stroke(&$aImg,&$aXScale,&$aYScale) {
$aImg->SetColor($this->color);
$aImg->SetLineWeight($this->weight);
if( $this->direction == VERTICAL ) {
$ymin_abs=$aYScale->Translate($aYScale->GetMinVal());
$ymax_abs=$aYScale->Translate($aYScale->GetMaxVal());
$xpos_abs=$aXScale->Translate($this->scaleposition);
$aImg->Line($xpos_abs, $ymin_abs, $xpos_abs, $ymax_abs);
}
elseif( $this->direction == HORIZONTAL ) {
$xmin_abs=$aXScale->Translate($aXScale->GetMinVal());
$xmax_abs=$aXScale->Translate($aXScale->GetMaxVal());
$ypos_abs=$aYScale->Translate($this->scaleposition);
$aImg->Line($xmin_abs, $ypos_abs, $xmax_abs, $ypos_abs);
}
else
JpGraphError::Raise("JpGraph Error: Illegal direction for static line");
}
}
//