# Processing

**URL:** https://discourse.processing.org/c/processing/6.md?no_subcategories=false&page=80

[Latest](https://discourse.processing.org/latest.md) · [Categories](https://discourse.processing.org/categories.md) · [Tags](https://discourse.processing.org/tags.md)

**Page:** 81

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## [The output is missing when button is pressed](https://discourse.processing.org/t/the-output-is-missing-when-button-is-pressed/36917)

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**Author:** [@jjjjjjj](https://discourse.processing.org/u/jjjjjjj)\
**Replies:** 2\
**Last updated:** [May 17, 2022, 4:23pm UTC](https://discourse.processing.org/t/the-output-is-missing-when-button-is-pressed/36917 "2022-05-17T16:23:36Z")

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Hi, I’m doing an assignment which I have to create a game and I’ve attempted to create a functioning menu. I coded buttons that navigate to different modes(?) when clicked using class (to create button) and switch (to go…

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## [Capture of smartphone camera fails](https://discourse.processing.org/t/capture-of-smartphone-camera-fails/36920)

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**Author:** [@mario60](https://discourse.processing.org/u/mario60)\
**Replies:** 0\
**Last updated:** [May 17, 2022, 2:00pm UTC](https://discourse.processing.org/t/capture-of-smartphone-camera-fails/36920 "2022-05-17T14:00:07Z")

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import processing.video.\*; Capture cam; Capture cam1; PGraphics pg1; PGraphics pg2; PImage img; PImage img1; void setup() { size(950, 650, JAVA2D); // JAVA2D by default pg1 = createGraphics(width/2, height/2, JAVA2D…

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## [Processing sketch loaded by html but does not run](https://discourse.processing.org/t/processing-sketch-loaded-by-html-but-does-not-run/36907)

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**Author:** [@anrui71](https://discourse.processing.org/u/anrui71)\
**Replies:** 1\
**Last updated:** [May 16, 2022, 6:40pm UTC](https://discourse.processing.org/t/processing-sketch-loaded-by-html-but-does-not-run/36907 "2022-05-16T18:40:52Z")

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Hello everyone! Luckily I finally managed to integrate a pde-file into an html file with… in head: in body: This worked fine only after having uploaded .html and .pde to my online-server, while it didn’t run locall…

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## [Is there an easy way to get an image from a section of an image?](https://discourse.processing.org/t/is-there-an-easy-way-to-get-an-image-from-a-section-of-an-image/36902)

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**Author:** [@AntiViral\_Builder](https://discourse.processing.org/u/AntiViral_Builder)\
**Replies:** 3\
**Last updated:** [May 15, 2022, 9:27pm UTC](https://discourse.processing.org/t/is-there-an-easy-way-to-get-an-image-from-a-section-of-an-image/36902 "2022-05-15T21:27:43Z")

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I would like to be able to do this quickly and not have to go through each pixel to transfer them.

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## [How to pause part of a draw loop](https://discourse.processing.org/t/how-to-pause-part-of-a-draw-loop/36891)

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**Author:** [@Blushdow7](https://discourse.processing.org/u/Blushdow7)\
**Replies:** 3\
**Last updated:** [May 15, 2022, 9:09pm UTC](https://discourse.processing.org/t/how-to-pause-part-of-a-draw-loop/36891 "2022-05-15T21:09:14Z")

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I’m trying to make my character be able to crouch so i have void draw () background(0) imageMode(CENTER); image(box.image1,0,0); void keyPressed() { if (key == ‘s’) { image(box.image3, box.position.x, box.positio…

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## [Create 500 PGraphics at the same time](https://discourse.processing.org/t/create-500-pgraphics-at-the-same-time/36900)

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**Author:** [@Rag](https://discourse.processing.org/u/Rag)\
**Replies:** 5\
**Last updated:** [May 15, 2022, 6:55pm UTC](https://discourse.processing.org/t/create-500-pgraphics-at-the-same-time/36900 "2022-05-15T18:55:11Z")

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I am trying to optimize a part of my code that creates 500 PGraphics. Is there a way to creates them all at the same time ? final int child\_count = 5; final int min\_size = 5; final int max\_size = 300; final int position…

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## [HELP: How to make slider button](https://discourse.processing.org/t/help-how-to-make-slider-button/36889)

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**Author:** [@xie](https://discourse.processing.org/u/xie)\
**Replies:** 5\
**Last updated:** [May 15, 2022, 11:23am UTC](https://discourse.processing.org/t/help-how-to-make-slider-button/36889 "2022-05-15T11:23:57Z")

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hi! How do you make a slider with buttons on each side that control the movement of the pointer? Thanks! @TfGuy44 @CodeMasterX

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## [Can't create 2D array](https://discourse.processing.org/t/cant-create-2d-array/36894)

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**Author:** [@tensor](https://discourse.processing.org/u/tensor)\
**Replies:** 5\
**Last updated:** [May 15, 2022, 10:50am UTC](https://discourse.processing.org/t/cant-create-2d-array/36894 "2022-05-15T10:50:24Z")

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PVector pos; float yaw; float pitch; float roll; float\[\]\[\] rmx; PVector posinit; void setup() { size(640, 360, P3D); pos = new PVector(width/2, height/2, 0); posinit = new PVector(width/2, height/2, 0); yaw = P…

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## [Read feedback data from gauge](https://discourse.processing.org/t/read-feedback-data-from-gauge/36879)

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**Author:** [@Ardan](https://discourse.processing.org/u/Ardan)\
**Replies:** 5\
**Last updated:** [May 15, 2022, 12:40am UTC](https://discourse.processing.org/t/read-feedback-data-from-gauge/36879 "2022-05-15T00:40:53Z")

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Hi guys, I want to use processing to read from my gauge, here is my code: import processing.serial.\*; ////varibles setting Serial myPort; String inString; Table table; String Force; String trigger; void setup() { …

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## [Origin of PVector](https://discourse.processing.org/t/origin-of-pvector/36881)

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**Author:** [@tensor](https://discourse.processing.org/u/tensor)\
**Replies:** 1\
**Last updated:** [May 14, 2022, 6:51am UTC](https://discourse.processing.org/t/origin-of-pvector/36881 "2022-05-14T06:51:52Z")

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How do i set the origin of a PVector to point other than the pre-defined top-left corner of screen?

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## [G4P Version text](https://discourse.processing.org/t/g4p-version-text/36791)

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**Author:** [@myupctoys](https://discourse.processing.org/u/myupctoys)\
**Replies:** 1\
**Last updated:** [May 13, 2022, 5:06pm UTC](https://discourse.processing.org/t/g4p-version-text/36791 "2022-05-13T17:06:19Z")

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Hi, Probably a question/comment for Quarks. I noticed a change in the version details on launching G4P library, looks a bit messy. I’m using V4.3.2 G4P in intellj for one project and I get a launch message such as this…

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## ["if" doesn't work while "switch" does](https://discourse.processing.org/t/if-doesnt-work-while-switch-does/36826)

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**Author:** [@sadPG](https://discourse.processing.org/u/sadPG)\
**Replies:** 4\
**Last updated:** [May 13, 2022, 11:27am UTC](https://discourse.processing.org/t/if-doesnt-work-while-switch-does/36826 "2022-05-13T11:27:08Z")

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void setup(){ String a = new String(); //a = "f\*"; //a += "\*\*"; a+='f'; a+='\*'; a+='\*'; a+='\*'; if(a == "f\*\*\*"){ println("hooray!"); }else{ println("f\*\*\*"); } switch(a){ case "f\*\*\*…

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## [Restricted rotation next to a wall](https://discourse.processing.org/t/restricted-rotation-next-to-a-wall/36687)

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**Author:** [@Divitiacus](https://discourse.processing.org/u/Divitiacus)\
**Replies:** 6\
**Last updated:** [May 12, 2022, 8:30pm UTC](https://discourse.processing.org/t/restricted-rotation-next-to-a-wall/36687 "2022-05-12T20:30:24Z")

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Currently I am trying to find a way to calculate restricted random rotation close to a wall/two walls/three walls. What I do, and it works, is to find the sector of the rotation circle, which is excluded, by trigonometr…

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## [Trying to check if a font can display certain glyphs](https://discourse.processing.org/t/trying-to-check-if-a-font-can-display-certain-glyphs/36795)

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**Author:** [@disuye](https://discourse.processing.org/u/disuye)\
**Replies:** 3\
**Last updated:** [May 12, 2022, 7:58pm UTC](https://discourse.processing.org/t/trying-to-check-if-a-font-can-display-certain-glyphs/36795 "2022-05-12T19:58:30Z")

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Regarding the code below, I’m having difficulties using font.canDisplayUpTo() – I think it’s an issue with the URL being passed to Font font =… ? The fonts are all fine, so it’s something to do with how Font is being fed…

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## ['NSWindow' ERROR](https://discourse.processing.org/t/nswindow-error/36848)

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**Author:** [@mar](https://discourse.processing.org/u/mar)\
**Replies:** 0\
**Last updated:** [May 12, 2022, 3:01pm UTC](https://discourse.processing.org/t/nswindow-error/36848 "2022-05-12T15:01:30Z")

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Hello! I have export my sketch as app for MacOS from P3.5.4 java in macOS 13.6, where it runs well. When I I try to run the app on macOS 12 doesn’t works, it comes the follow ERROR: Application Specific Information: …

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## [Can i send someone my code and they can explain why i have an error and how to fix it](https://discourse.processing.org/t/can-i-send-someone-my-code-and-they-can-explain-why-i-have-an-error-and-how-to-fix-it/36845)

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**Author:** [@anonymous-54](https://discourse.processing.org/u/anonymous-54)\
**Replies:** 3\
**Last updated:** [May 12, 2022, 1:31pm UTC](https://discourse.processing.org/t/can-i-send-someone-my-code-and-they-can-explain-why-i-have-an-error-and-how-to-fix-it/36845 "2022-05-12T13:31:10Z")

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can i send someone my code and they can explain why i have an error and how to fix it

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## [Dino chrome game](https://discourse.processing.org/t/dino-chrome-game/36836)

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**Author:** [@rmznam02](https://discourse.processing.org/u/rmznam02)\
**Replies:** 3\
**Last updated:** [May 12, 2022, 11:21am UTC](https://discourse.processing.org/t/dino-chrome-game/36836 "2022-05-12T11:21:44Z")

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Hey, everyone. I have a school project and I got this code, I need help to comment, I have to deliver it today before midnight, thanks for your help. rmznam@outlook.com

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## [How to have lines infront of moving object](https://discourse.processing.org/t/how-to-have-lines-infront-of-moving-object/36839)

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**Author:** [@anonymous-54](https://discourse.processing.org/u/anonymous-54)\
**Replies:** 1\
**Last updated:** [May 12, 2022, 8:22am UTC](https://discourse.processing.org/t/how-to-have-lines-infront-of-moving-object/36839 "2022-05-12T08:22:24Z")

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i made the object stop/get stuck at a line top right of the screen how do i make the lines appear above my moving object which is controlled by mousex and mousey

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## [OpenJDK goes to backgroundtask after closing the application window](https://discourse.processing.org/t/openjdk-goes-to-backgroundtask-after-closing-the-application-window/36841)

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**Author:** [@axel223](https://discourse.processing.org/u/axel223)\
**Replies:** 0\
**Last updated:** [May 12, 2022, 7:35am UTC](https://discourse.processing.org/t/openjdk-goes-to-backgroundtask-after-closing-the-application-window/36841 "2022-05-12T07:35:45Z")

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When i open my exported processing application it all works fine. The OpenJDK Platform binary is shown in my tasks. After closing, the OpenJDK Platform binary is not terminated but moved to the backgroundtasks and is st…

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## [How to use data from accelerometer to control camera and perspective in Processing](https://discourse.processing.org/t/how-to-use-data-from-accelerometer-to-control-camera-and-perspective-in-processing/36799)

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**Author:** [@EllenYang](https://discourse.processing.org/u/EllenYang)\
**Replies:** 42\
**Last updated:** [May 12, 2022, 2:21am UTC](https://discourse.processing.org/t/how-to-use-data-from-accelerometer-to-control-camera-and-perspective-in-processing/36799 "2022-05-12T02:21:37Z")

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I’m new to the forum, I wonder if anyone can help me to use data from accelerometer to control camera and perspective in processing? I’m making a 3D model of a galaxy and wish to use accelerometer to control the perspect…

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## [SerialEvent not called (after the first 100-300 times)](https://discourse.processing.org/t/serialevent-not-called-after-the-first-100-300-times/36832)

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**Author:** [@jango\_fx](https://discourse.processing.org/u/jango_fx)\
**Replies:** 1\
**Last updated:** [May 11, 2022, 11:09pm UTC](https://discourse.processing.org/t/serialevent-not-called-after-the-first-100-300-times/36832 "2022-05-11T23:09:02Z")

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is it me? or Processing 4? or macOS 12? i’m trying to read serial data not in draw() but in serialEvent() – which worked fine in the past. but serialEvent() is only called about 100-300 times in the very first seconds …

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## [Is it possible to use GStreamer v 1.20.2 instead of GStreamer 1.16.2 the P4 video library (4.2.1)? How could one do this?](https://discourse.processing.org/t/is-it-possible-to-use-gstreamer-v-1-20-2-instead-of-gstreamer-1-16-2-the-p4-video-library-4-2-1-how-could-one-do-this/36829)

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**Author:** [@JSGauthier](https://discourse.processing.org/u/JSGauthier)\
**Replies:** 0\
**Last updated:** [May 11, 2022, 6:07pm UTC](https://discourse.processing.org/t/is-it-possible-to-use-gstreamer-v-1-20-2-instead-of-gstreamer-1-16-2-the-p4-video-library-4-2-1-how-could-one-do-this/36829 "2022-05-11T18:07:53Z")

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Does anyone know if one can use GStreamer v 1.20.2 instead of GStreamer 1.16.2 for Processing 4.08b? (video library 4.2.1). https://gstreamer.freedesktop.org/releases/1.20/#1.20.2 bugfixes include: \*\*\* nvh264dec, nvh26…

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## [Why is the program ignoring my second for- loop?](https://discourse.processing.org/t/why-is-the-program-ignoring-my-second-for-loop/36819)

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**Author:** [@Katharina](https://discourse.processing.org/u/Katharina)\
**Replies:** 3\
**Last updated:** [May 11, 2022, 2:42pm UTC](https://discourse.processing.org/t/why-is-the-program-ignoring-my-second-for-loop/36819 "2022-05-11T14:42:23Z")

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Please help me, im a beginner in Processing. Before I’ll tell my problem I’ll twll you about the programm so u wont get confused. I want to create 2 arrows (left and right) they need to be next to eachother. I need 4 r…

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## [Why Serial is not printing data from Arduino accelerometer in Processing](https://discourse.processing.org/t/why-serial-is-not-printing-data-from-arduino-accelerometer-in-processing/36809)

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**Author:** [@EllenYang00](https://discourse.processing.org/u/EllenYang00)\
**Replies:** 3\
**Last updated:** [May 11, 2022, 11:03am UTC](https://discourse.processing.org/t/why-serial-is-not-printing-data-from-arduino-accelerometer-in-processing/36809 "2022-05-11T11:03:17Z")

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I imported Serial library in my Processing and connect it to the Arduino accelerometer. Now the console is only printing my port’s name. I wish it to print out the acceleration on xyz as well. Can someone help me? I will…

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## [All datas on my mac book pro where deleted by closing the Processing app](https://discourse.processing.org/t/all-datas-on-my-mac-book-pro-where-deleted-by-closing-the-processing-app/36801)

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**Author:** [@bebmo](https://discourse.processing.org/u/bebmo)\
**Replies:** 0\
**Last updated:** [May 10, 2022, 3:53pm UTC](https://discourse.processing.org/t/all-datas-on-my-mac-book-pro-where-deleted-by-closing-the-processing-app/36801 "2022-05-10T15:53:07Z")

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I work with an mac book pro M1, 12.3.1 Monterey After using the processing app, I close the app and in this moment all my datas are deleted. also the back ups in the i cloud is deleted. Also on the mac book memory ther…

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## [How to move an object diagonally](https://discourse.processing.org/t/how-to-move-an-object-diagonally/36807)

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**Author:** [@anonymous-54](https://discourse.processing.org/u/anonymous-54)\
**Replies:** 3\
**Last updated:** [May 11, 2022, 1:51am UTC](https://discourse.processing.org/t/how-to-move-an-object-diagonally/36807 "2022-05-11T01:51:20Z")

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i would like to move an object diagonally. right now it moves up and leaves the screen with just void mousepressed, mousedragged and mousereleased

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## [Beads - Add timeout when an audio ends](https://discourse.processing.org/t/beads-add-timeout-when-an-audio-ends/36717)

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**Author:** [@Alumno51](https://discourse.processing.org/u/Alumno51)\
**Replies:** 1\
**Last updated:** [May 10, 2022, 8:58pm UTC](https://discourse.processing.org/t/beads-add-timeout-when-an-audio-ends/36717 "2022-05-10T20:58:27Z")

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Hello everyone, I want the audio to be reproduced in loop, but between loops, I need a timeout. I tried coding “delay(1000);” but it influences the rest of the code. In case anyone is wondering what I want to do: I wa…

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## [Video playback if](https://discourse.processing.org/t/video-playback-if/36788)

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**Author:** [@zrshzrsh](https://discourse.processing.org/u/zrshzrsh)\
**Replies:** 2\
**Last updated:** [May 10, 2022, 2:10pm UTC](https://discourse.processing.org/t/video-playback-if/36788 "2022-05-10T14:10:42Z")

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Hi all. I’m trying to use my Arduino Serial to control video play in Processing. What I want to achieve is video play when value(Arduino) is higher than 2. And when not (lower than 2) I wanted my video to playback(rew…

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## [How to get Processing library path?](https://discourse.processing.org/t/how-to-get-processing-library-path/36707)

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**Author:** [@bananana](https://discourse.processing.org/u/bananana)\
**Replies:** 6\
**Last updated:** [May 10, 2022, 11:29am UTC](https://discourse.processing.org/t/how-to-get-processing-library-path/36707 "2022-05-10T11:29:55Z")

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As per the title, how can I get the path of the Processing libraries folder from within my Processing app. Is there some default variable?

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## [surface.setResizable() does not work as expected in child applet using JAVA2D renderer](https://discourse.processing.org/t/surface-setresizable-does-not-work-as-expected-in-child-applet-using-java2d-renderer/36721)

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**Author:** [@Putzlicht](https://discourse.processing.org/u/Putzlicht)\
**Replies:** 5\
**Last updated:** [May 9, 2022, 9:55pm UTC](https://discourse.processing.org/t/surface-setresizable-does-not-work-as-expected-in-child-applet-using-java2d-renderer/36721 "2022-05-09T21:55:21Z")

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Hello, i found a nasty little thing which makes some trouble. But I don’t want to call it a bug because I don’t know where it’s coming from :wink: It would be very helpful to me if someone could explain it. The follo…

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