what is the call order for the following methods: setup() draw() mousePressed() mouseDragged() mouseReleased() // related keyboard methods in particular: am i correct to assume that draw() will pause during the run on any non-draw() method for example: if i want to implement a graphics save/re…

The following answer applies to Java mode. First we distinguish between event capture and event handlers. When the mouse moves or a mouse button clicked or a key typed … then this is captured by the OS which creates an event-data-object that is forwarded to the currently active application, our sk…

[image] mgood7123: Am I correct to assume that draw() will pause during the run on any non-draw() method? All of those callbacks are run synchronously by the same “Animation” Thread. It’s not that draw() “pauses” for the resolution of the input callbacks, but rather that draw() has already f…

so… if all the callbacks are called synchronously, then all methods would block one another correct? eg something like this Thread animation() { applet.setup(); while(true) { applet.draw(); if (mousePressed()) applet.mousePressed(); if (mouseDragged()) applet.mouseDr…

[image] mgood7123: then all methods would block one another correct? True. That is why we don’t execute time consuming blocks of code inside an event handler. In the code you provide there appears to be two applet instances. If that is correct then each applet has its own event-handling thre…

i dont know how the internals work but im assuming the thread and the Applet are seperate classes and as such it as a reference to the current running Applet, eg thisAppletInstance.setup()

To get a reference to the running PApplet we use the Java keyword this. If you run the following code you will see the output PApplet PApplet which demonstrates this. void setup(){ size(400,400); String thisname = this.getClass().getSuperclass().getSimpleName(); String name = this.getClass()…

like… all i want to know is what functions will block the draw() call if any

[image] Stumped by something simple Libraries Even though Processing enqueues input events in a separate Thread, it dequeues them in the main “Animation” Thread. So it’s safe to “draw” when using Processing’s own input callbacks. Now, if a 3rd-party library deals w/ hard…

If you are interested in finding out what threads are running with your sketch then try the code in this discussion .

PApplet call order (multi-threading thread safety)

Processing

GoToLoop June 1, 2020, 10:33am 9

Is this a known bug? - Processing 2.x and 3.x Forum
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PApplet call order (multi-threading thread safety)

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