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drawCircle - Circles

This function allows you to draw circles. It is possible to tune the rendering by playing with the $Format array. To learn more about this please read the Format array guide. This functions are supporting anti-alias and shadows.

Calling this function
drawCircle($X1,$Y1,$Width,$Height,$Format="");
Where :

X1,Y1 are the center coordinate of the circle.
Width is the width of the circle.
Height is the heightof the circle.
Format is an array containing the drawing parameters.


This function can draw an ellipse by using different values for width and height.

Customisation array - Tune up your circle!

It is possible to customize the circle rendering by playing with this array. Providing a detailled configuration is not mandatory, by default the circles will be drawn black with no transparency.

The border color can be set with R, G, B.
The alpha transparency factor can be set with Alpha.
You can draw dashed lines using the Ticks parameter.


Sample script



 /* Left circles with different alpha transparency */
 $myPicture->drawCircle(100,125,50,50,array("R"=>213,"G"=>226,"B"=>0,"Alpha"=>100));
 $myPicture->drawCircle(140,125,50,50,array("R"=>213,"G"=>226,"B"=>0,"Alpha"=>70));
 $myPicture->drawCircle(180,125,50,50, array("R"=>213,"G"=>226,"B"=>0,"Alpha"=>40));
 $myPicture->drawCircle(220,125,50,50,array("R"=>213,"G"=>226,"B"=>0,"Alpha"=>20));

 /* Active shadow support */
 $myPicture->setShadow(TRUE,array("X"=>1,"Y"=>1,"R"=>0,"G"=>0,"B"=>0,"Alpha"=>20));

 /* Right circles */
 $CircleSettings = array("R"=>209,"G"=>31,"B"=>27,"Alpha"=>100);
 $myPicture->drawCircle(480,60,20,20,$CircleSettings );

 $CircleSettings = array("R"=>209,"G"=>125,"B"=>27,"Alpha"=>100);
 $myPicture->drawCircle(480,100,30,20,$CircleSettings );

 $CircleSettings = array("R"=>209,"G"=>198,"B"=>27,"Alpha"=>100,"Ticks"=>4);
 $myPicture->drawCircle(480,140,40,20,$CircleSettings );

 $CircleSettings = array("R"=>134,"G"=>209,"B"=>27,"Alpha"=>100,"Ticks"=>4);
 $myPicture->drawCircle(480,180,50,20,$CircleSettings );

This will draw some transparency test on the left side of the picture and 4 colored boxes on the right. Shadow support is enabled on a (+1,+1) basis.
Last updated on 11/05/2009 
by Jean-Damien 
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