René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Blur filter throws exception if extent is too large relative to image size","articleBody":"*Created by: jlstrecker*\n\n## Description\r\n\r\nWhen `filter(BLUR, param)` is called with `param` above a certain amount relative to the image size, an ArithmeticException is thrown for division by zero.\r\n\r\n## Expected Behavior\r\n\r\nImage is blurred the specified amount.\r\n\r\n## Current Behavior\r\n\r\n```\r\njava.lang.ArithmeticException: / by zero\r\n\tat processing.core.PImage.blurARGB(PImage.java:1318)\r\n\tat processing.core.PImage.filter(PImage.java:991)\r\n\tat processing.opengl.PGraphicsOpenGL.filter(PGraphicsOpenGL.java:6037)\r\n\tat processing.core.PApplet.filter(PApplet.java:15081)\r\n\tat BlurTest.draw(BlurTest.java:25)\r\n\tat processing.core.PApplet.handleDraw(PApplet.java:2094)\r\n\tat processing.opengl.PSurfaceJOGL$DrawListener.display(PSurfaceJOGL.java:840)\r\n\tat jogamp.opengl.GLDrawableHelper.displayImpl(GLDrawableHelper.java:692)\r\n\tat jogamp.opengl.GLDrawableHelper.display(GLDrawableHelper.java:674)\r\n\tat jogamp.opengl.GLAutoDrawableBase$2.run(GLAutoDrawableBase.java:443)\r\n\tat jogamp.opengl.GLDrawableHelper.invokeGLImpl(GLDrawableHelper.java:1293)\r\n\tat jogamp.opengl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:1147)\r\n\tat com.jogamp.newt.opengl.GLWindow.display(GLWindow.java:782)\r\n\tat com.jogamp.opengl.util.AWTAnimatorImpl.display(AWTAnimatorImpl.java:81)\r\n\tat com.jogamp.opengl.util.AnimatorBase.display(AnimatorBase.java:453)\r\n\tat com.jogamp.opengl.util.FPSAnimator$MainTask.run(FPSAnimator.java:178)\r\n\tat java.base/java.util.TimerThread.mainLoop(Timer.java:566)\r\n\tat java.base/java.util.TimerThread.run(Timer.java:516)\r\n```\r\n\r\n## Steps to Reproduce\r\n\r\nRun this sketch:\r\n\r\n```java\r\nvoid setup() {\r\n  size(100, 100, P3D);\r\n}\r\n\r\nvoid draw() {\r\n  background(0);\r\n  ellipse(50, 50, 80, 80);\r\n  filter(BLUR, 29);  // 28 is OK, 29 throws exception\r\n}\r\n```\r\n\r\n## Your Environment\r\n\u003c!--- Include details about your environment. --\u003e\r\n\u003c!--- Thousands of people use Processing every day and may not have this issue, --\u003e \r\n\u003c!--- so this gives us clues about why you’re running into a problem. --\u003e\r\n* Processing version: 4.2\r\n* Operating System and OS version: macOS 10.15.7\r\n\r\n## Possible Causes / Solutions\r\n\u003c!--- Optionally, if you have a diagnosis or fix in mind, please share. --\u003e\r\n","author":{"url":"https://github.com/processing-bot","@type":"Person","name":"processing-bot"},"datePublished":"2023-05-18T15:20:27.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/723/processing4/issues/723"}