Blur filter throws exception if extent is too large relative to image size #723
Description
Description
When filter(BLUR, param) is called with param above a certain amount relative to the image size, an ArithmeticException is thrown for division by zero.
Expected Behavior
Image is blurred the specified amount.
Current Behavior
java.lang.ArithmeticException: / by zero
at processing.core.PImage.blurARGB(PImage.java:1318)
at processing.core.PImage.filter(PImage.java:991)
at processing.opengl.PGraphicsOpenGL.filter(PGraphicsOpenGL.java:6037)
at processing.core.PApplet.filter(PApplet.java:15081)
at BlurTest.draw(BlurTest.java:25)
at processing.core.PApplet.handleDraw(PApplet.java:2094)
at processing.opengl.PSurfaceJOGL$DrawListener.display(PSurfaceJOGL.java:840)
at jogamp.opengl.GLDrawableHelper.displayImpl(GLDrawableHelper.java:692)
at jogamp.opengl.GLDrawableHelper.display(GLDrawableHelper.java:674)
at jogamp.opengl.GLAutoDrawableBase$2.run(GLAutoDrawableBase.java:443)
at jogamp.opengl.GLDrawableHelper.invokeGLImpl(GLDrawableHelper.java:1293)
at jogamp.opengl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:1147)
at com.jogamp.newt.opengl.GLWindow.display(GLWindow.java:782)
at com.jogamp.opengl.util.AWTAnimatorImpl.display(AWTAnimatorImpl.java:81)
at com.jogamp.opengl.util.AnimatorBase.display(AnimatorBase.java:453)
at com.jogamp.opengl.util.FPSAnimator$MainTask.run(FPSAnimator.java:178)
at java.base/java.util.TimerThread.mainLoop(Timer.java:566)
at java.base/java.util.TimerThread.run(Timer.java:516)
Steps to Reproduce
Run this sketch:
void setup() {
size(100, 100, P3D);
}
void draw() {
background(0);
ellipse(50, 50, 80, 80);
filter(BLUR, 29); // 28 is OK, 29 throws exception
}Your Environment
- Processing version: 4.2
- Operating System and OS version: macOS 10.15.7