# Processing

**URL:** https://discourse.processing.org/c/processing/6.md?no_subcategories=false&page=342

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

**Page:** 343

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## [Minim AudioOutput and Oscil](https://discourse.processing.org/t/minim-audiooutput-and-oscil/2387)

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**Author:** [@maddyna](https://discourse.processing.org/u/maddyna)\
**Replies:** 2\
**Last updated:** [November 30, 2018, 2:12am UTC](https://discourse.processing.org/t/minim-audiooutput-and-oscil/2387 "2018-11-30T02:12:37Z")

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is there a good simple tutorial for Minim apart from http://code.compart where audio output mental.net creating Oscil and waveforms are discussed in a simple manner please advice

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## [Is there a similar function to pushMatrix() and popMatrix() but instead for transforms its for functions like stroke() and strokeWeight()?](https://discourse.processing.org/t/is-there-a-similar-function-to-pushmatrix-and-popmatrix-but-instead-for-transforms-its-for-functions-like-stroke-and-strokeweight/6088)

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**Author:** [@klaik30](https://discourse.processing.org/u/klaik30)\
**Replies:** 2\
**Last updated:** [November 30, 2018, 12:39am UTC](https://discourse.processing.org/t/is-there-a-similar-function-to-pushmatrix-and-popmatrix-but-instead-for-transforms-its-for-functions-like-stroke-and-strokeweight/6088 "2018-11-30T00:39:42Z")

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pushMatrix() and popMatrix() are super useful when I want to not destroy the current coordinate system and basically switch reference frame but in that reference frame, I might want to apply settings that only apply to t…

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## [New Issue With Code / variable usage](https://discourse.processing.org/t/new-issue-with-code-variable-usage/6096)

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**Author:** [@Etorphine](https://discourse.processing.org/u/Etorphine)\
**Replies:** 2\
**Last updated:** [November 30, 2018, 12:36am UTC](https://discourse.processing.org/t/new-issue-with-code-variable-usage/6096 "2018-11-30T00:36:44Z")

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The issue I am currently having with my code is it having it randomly display the image I want. I attempted to have a variable named finalImage in which it would be stored once it selected the random image but I cannot h…

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## [Multi-threading on Ethereum walelts transactions](https://discourse.processing.org/t/multi-threading-on-ethereum-walelts-transactions/5884)

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**Author:** [@moba\_moba65](https://discourse.processing.org/u/moba_moba65)\
**Replies:** 18\
**Last updated:** [November 29, 2018, 11:54pm UTC](https://discourse.processing.org/t/multi-threading-on-ethereum-walelts-transactions/5884 "2018-11-29T23:54:20Z")

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I am writing a code on Ethereum transactions between couple of wallets. My goal is to make an animation to show that how the transactions are being done between these wallets. So I gave each wallet an X-Y coordination an…

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## [What is wrong with this code?](https://discourse.processing.org/t/what-is-wrong-with-this-code/6089)

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**Author:** [@CowPieForever](https://discourse.processing.org/u/CowPieForever)\
**Replies:** 4\
**Last updated:** [November 29, 2018, 11:30pm UTC](https://discourse.processing.org/t/what-is-wrong-with-this-code/6089 "2018-11-29T23:30:59Z")

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This is my code: however, whenever I run it, it gives me the error “expecting }, found ‘else’”. I’ve gone through it multiple times and I have no idea whats going wrong. Please help.

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## [JoptionPane library error!](https://discourse.processing.org/t/joptionpane-library-error/6081)

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**Author:** [@JeromeBatchoski](https://discourse.processing.org/u/JeromeBatchoski)\
**Replies:** 1\
**Last updated:** [November 29, 2018, 9:31pm UTC](https://discourse.processing.org/t/joptionpane-library-error/6081 "2018-11-29T21:31:58Z")

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I keep getting the following error, ive searched everywhere, even reinstalled the program, still no progress. The package “javax.swing.J0ptionPane” does not exist. You might be missing a library. All the spelling are c…

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## [How to instantiate an already created object that exists in another file?](https://discourse.processing.org/t/how-to-instantiate-an-already-created-object-that-exists-in-another-file/6083)

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**Author:** [@klaik30](https://discourse.processing.org/u/klaik30)\
**Replies:** 3\
**Last updated:** [November 29, 2018, 9:40pm UTC](https://discourse.processing.org/t/how-to-instantiate-an-already-created-object-that-exists-in-another-file/6083 "2018-11-29T21:40:32Z")

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Hi, I’m trying to avoid having all my created objects in the same file I want to use these objects in. I have a file called “FlowFields” and in another file, I have a “Particle” object that I want to use in my FlowFields…

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## [Final Project Engg 233](https://discourse.processing.org/t/final-project-engg-233/6043)

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**Author:** [@ih8pa1n](https://discourse.processing.org/u/ih8pa1n)\
**Replies:** 4\
**Last updated:** [November 29, 2018, 8:04pm UTC](https://discourse.processing.org/t/final-project-engg-233/6043 "2018-11-29T20:04:15Z")

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Hey everyone, i have been struggling in this course. We have to make a digital dashboard of a car. Any help would be appreciated. Requirements for this class: Class SensorDataProvider This class has the following me…

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## [DISABLE\_DEPTH\_TEST not working in P3D](https://discourse.processing.org/t/disable-depth-test-not-working-in-p3d/5995)

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**Author:** [@clankill3r](https://discourse.processing.org/u/clankill3r)\
**Replies:** 2\
**Last updated:** [November 29, 2018, 3:56pm UTC](https://discourse.processing.org/t/disable-depth-test-not-working-in-p3d/5995 "2018-11-29T15:56:20Z")

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The line is over the ellipses,why? It should be under it: So it seems like DISABLE\_DEPTH\_TEST is not working. Is there a way to fix? void setup() { size(640, 480, P3D); } void draw() { background(0); rota…

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## [GameControlPlus - Controller Vibration?](https://discourse.processing.org/t/gamecontrolplus-controller-vibration/5902)

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**Author:** [@TechnicJelle](https://discourse.processing.org/u/TechnicJelle)\
**Replies:** 6\
**Last updated:** [November 29, 2018, 12:37pm UTC](https://discourse.processing.org/t/gamecontrolplus-controller-vibration/5902 "2018-11-29T12:37:18Z")

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@quark Hello, Is it possible to vibrate the controller using GCP? I’ve browsed the interweb quite a bit, but I couldn’t really find anything. I did check if my controller even supports vibration, so I downloaded Cont…

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## [How to determine right Class to use, if not equal to used variable's Class?](https://discourse.processing.org/t/how-to-determine-right-class-to-use-if-not-equal-to-used-variables-class/5940)

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**Author:** [@Lexyth](https://discourse.processing.org/u/Lexyth)\
**Replies:** 12\
**Last updated:** [November 29, 2018, 12:11pm UTC](https://discourse.processing.org/t/how-to-determine-right-class-to-use-if-not-equal-to-used-variables-class/5940 "2018-11-29T12:11:15Z")

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The question might be confusing and i don’t know how to explain it better, but an example should show what i mean. Lets say we have some objects with different classes \<Banana, Apple, Bread, and so on\>. And now i want …

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## [Why does my code not work()](https://discourse.processing.org/t/why-does-my-code-not-work/6063)

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**Author:** [@LordKim](https://discourse.processing.org/u/LordKim)\
**Replies:** 1\
**Last updated:** [November 29, 2018, 7:02am UTC](https://discourse.processing.org/t/why-does-my-code-not-work/6063 "2018-11-29T07:02:31Z")

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here is my code SensorDataProvider s; Gauge g; int value = 0; final int Mainmenu = 0; final int Car = 1; void setup(){ fullScreen(); if (key == '1'){ s = new SensorDataProvider(); s.Initialize("car\_status\_B…

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## [Colour transparency](https://discourse.processing.org/t/colour-transparency/6052)

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**Author:** [@CowPieForever](https://discourse.processing.org/u/CowPieForever)\
**Replies:** 6\
**Last updated:** [November 29, 2018, 6:30am UTC](https://discourse.processing.org/t/colour-transparency/6052 "2018-11-29T06:30:12Z")

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My code for colour looks like this: stroke(random(127.5,255),random(127.5,255),random(127.5,255)); fill(random(127.5,255),random(127.5,255),random(127.5,255)); Since I’m using the random function, it doesn’t follow the…

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## [Binary Search Help](https://discourse.processing.org/t/binary-search-help/6053)

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**Author:** [@lormanny](https://discourse.processing.org/u/lormanny)\
**Replies:** 1\
**Last updated:** [November 29, 2018, 1:15am UTC](https://discourse.processing.org/t/binary-search-help/6053 "2018-11-29T01:15:16Z")

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PFont font; int titleScreen = 0; int gameScreen = 1; int resultScreen = 2; int gameState; int countDownTimer; int countUpTimer; //Reminder: Add three zeroes to the end of desired time in Game Duration i…

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## [Coding Help Cannot Make Random Images Being Chosen](https://discourse.processing.org/t/coding-help-cannot-make-random-images-being-chosen/6057)

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**Author:** [@Etorphine](https://discourse.processing.org/u/Etorphine)\
**Replies:** 1\
**Last updated:** [November 29, 2018, 2:59am UTC](https://discourse.processing.org/t/coding-help-cannot-make-random-images-being-chosen/6057 "2018-11-29T02:59:29Z")

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//master variables PImage\[\] randomIMG = new PImage\[5\]; int numOfIMG; int rand = 0; PImage image1,image2,image3,image4,image5; float height = 100; float width = 50; float length = 150; //imageONE = loadImage ("imageNOW.…

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## [Assistance Needed for Text Fade](https://discourse.processing.org/t/assistance-needed-for-text-fade/5786)

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**Author:** [@lormanny](https://discourse.processing.org/u/lormanny)\
**Replies:** 4\
**Last updated:** [November 29, 2018, 12:25am UTC](https://discourse.processing.org/t/assistance-needed-for-text-fade/5786 "2018-11-29T00:25:21Z")

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I need some help with my code. I am creating an Anagrams project for school. I need help knowing where to start to get the fading text to work. Whenever you type something that is invalid, there is a feedback string that…

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## [Fixing mouse position to window center](https://discourse.processing.org/t/fixing-mouse-position-to-window-center/6023)

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**Author:** [@djokjula](https://discourse.processing.org/u/djokjula)\
**Replies:** 3\
**Last updated:** [November 28, 2018, 11:46pm UTC](https://discourse.processing.org/t/fixing-mouse-position-to-window-center/6023 "2018-11-28T23:46:18Z")

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Is it possible to set the cursor position to the center (or anywhere else) of the screen? Similar to how games hide the cursor and don’t let it escape the window. Context: I’m making a 3D scene, and want the camera to …

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## [Random colours problem](https://discourse.processing.org/t/random-colours-problem/6044)

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**Author:** [@oscie24](https://discourse.processing.org/u/oscie24)\
**Replies:** 2\
**Last updated:** [November 28, 2018, 9:16pm UTC](https://discourse.processing.org/t/random-colours-problem/6044 "2018-11-28T21:16:18Z")

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For my tessellation project, I’m so near to finishing. I didn’t spot this problem until a friend of mine pointed it out. What I have I done is when I click anywhere within the small grid that will tessellate that onto th…

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## [Help with a Problem](https://discourse.processing.org/t/help-with-a-problem/6048)

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**Author:** [@drakenus777](https://discourse.processing.org/u/drakenus777)\
**Replies:** 1\
**Last updated:** [November 28, 2018, 9:11pm UTC](https://discourse.processing.org/t/help-with-a-problem/6048 "2018-11-28T21:11:29Z")

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Relatively New Programmer Asking for help. So I am making a Beginner “game” in processing where I’m to supposed reset a character’s timer when they collide with an enemy. Here is the code: public void timer() { newt…

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## [How to populate a String?](https://discourse.processing.org/t/how-to-populate-a-string/6029)

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**Author:** [@polispace](https://discourse.processing.org/u/polispace)\
**Replies:** 6\
**Last updated:** [November 28, 2018, 8:42pm UTC](https://discourse.processing.org/t/how-to-populate-a-string/6029 "2018-11-28T20:42:14Z")

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Hi there, I’m braking down a bigger code in to small parts. Now i’m stuck with what I guess is a basic things. I would like to simply display words I have in a text file .txt. I written a code but i get the error “nu…

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## [Engg 233 final project](https://discourse.processing.org/t/engg-233-final-project/6037)

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**Author:** [@Engg233\_pross](https://discourse.processing.org/u/Engg233_pross)\
**Replies:** 1\
**Last updated:** [November 28, 2018, 6:22pm UTC](https://discourse.processing.org/t/engg-233-final-project/6037 "2018-11-28T18:22:17Z")

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can anyone help me to do final project Engg 233 milestone 1 ?

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## [How to create a reset for my program](https://discourse.processing.org/t/how-to-create-a-reset-for-my-program/6036)

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**Author:** [@evasiv](https://discourse.processing.org/u/evasiv)\
**Replies:** 1\
**Last updated:** [November 28, 2018, 6:13pm UTC](https://discourse.processing.org/t/how-to-create-a-reset-for-my-program/6036 "2018-11-28T18:13:21Z")

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I created a simple Pong game for my program, currently when the score for one player reaches “10” the window just closes. I’m trying to make it so when it reaches 10 the program will instead just close and then restart, …

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## [Vertex will not fill (Processing 3)](https://discourse.processing.org/t/vertex-will-not-fill-processing-3/6013)

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**Author:** [@Mr\_Dumpling](https://discourse.processing.org/u/Mr_Dumpling)\
**Replies:** 5\
**Last updated:** [November 28, 2018, 3:47pm UTC](https://discourse.processing.org/t/vertex-will-not-fill-processing-3/6013 "2018-11-28T15:47:23Z")

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So I have been trying to make a circle generator using vertexes, as I want to be able to use them in contours. However I have only been able to get points to show up, lines will not connect, and simply make dots every ot…

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## [Random Walker Spiral using Probabilities](https://discourse.processing.org/t/random-walker-spiral-using-probabilities/5948)

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**Author:** [@RC75018](https://discourse.processing.org/u/RC75018)\
**Replies:** 8\
**Last updated:** [November 28, 2018, 1:06pm UTC](https://discourse.processing.org/t/random-walker-spiral-using-probabilities/5948 "2018-11-28T13:06:51Z")

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Hi Everyone, I am working on an algorithm to create a random walker using probabilities. I want to have a controlled random spiral shape. Like this: I have create a random walker class first. When i am trying to make…

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## [Store values in array](https://discourse.processing.org/t/store-values-in-array/5385)

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**Author:** [@b\_and\_z](https://discourse.processing.org/u/b_and_z)\
**Replies:** 7\
**Last updated:** [November 28, 2018, 9:50am UTC](https://discourse.processing.org/t/store-values-in-array/5385 "2018-11-28T09:50:57Z")

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I already posted this on reddit, so here goes: For an installation, I need to create a code where one can press a key (r, g, b, y) which then creates a rgb code for an rgb lamp. There will be a fixed amount of lamps (e.…

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## [G4P GUI Builder 4.2.1: new window KEEP\_OPEN doesn't work](https://discourse.processing.org/t/g4p-gui-builder-4-2-1-new-window-keep-open-doesnt-work/5994)

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**Author:** [@gyula](https://discourse.processing.org/u/gyula)\
**Replies:** 2\
**Last updated:** [November 28, 2018, 9:44am UTC](https://discourse.processing.org/t/g4p-gui-builder-4-2-1-new-window-keep-open-doesnt-work/5994 "2018-11-28T09:44:47Z")

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@quark, I really appreciate your G4P library and this is just a small issue I may have found in GUI Builder 4.2.1. on Windows. When I set up a new window in G4P GUI Builder, selecting the KEEP\_OPEN parameter for Action …

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## [Connect particle previous and current positions with line](https://discourse.processing.org/t/connect-particle-previous-and-current-positions-with-line/6017)

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**Author:** [@klaik30](https://discourse.processing.org/u/klaik30)\
**Replies:** 2\
**Last updated:** [November 28, 2018, 8:32am UTC](https://discourse.processing.org/t/connect-particle-previous-and-current-positions-with-line/6017 "2018-11-28T08:32:54Z")

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I’m trying to use a particles previous position to draw a line to its current position but they are always equal even though previous position is got before the position is updated? So I’m following Coding Challenge #24…

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## [Potential Bug - Processing compiler becoming unresponsive with negative text size](https://discourse.processing.org/t/potential-bug-processing-compiler-becoming-unresponsive-with-negative-text-size/5988)

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**Author:** [@Sarah](https://discourse.processing.org/u/Sarah)\
**Replies:** 10\
**Last updated:** [November 28, 2018, 7:55am UTC](https://discourse.processing.org/t/potential-bug-processing-compiler-becoming-unresponsive-with-negative-text-size/5988 "2018-11-28T07:55:36Z")

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Hi, I’m not sure if this a simple coding issue, or a bug, but I’ve recently when experimenting with textSize();, my Processing IDE froze, was unable to start any new program, and couldn’t even quit properly on my Macboo…

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## [Snake Game problem: having trouble figuring out how to make it reset](https://discourse.processing.org/t/snake-game-problem-having-trouble-figuring-out-how-to-make-it-reset/6005)

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**Author:** [@blankbleak](https://discourse.processing.org/u/blankbleak)\
**Replies:** 3\
**Last updated:** [November 28, 2018, 12:05am UTC](https://discourse.processing.org/t/snake-game-problem-having-trouble-figuring-out-how-to-make-it-reset/6005 "2018-11-28T00:05:52Z")

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Hello, I have just started a snake game project for my class, however I’m a little confused with partial arrays in the sense that I am unsure about how to make it start in the top middle of the canvas, I am just confused…

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## [Gradient background immediately fades away?](https://discourse.processing.org/t/gradient-background-immediately-fades-away/6006)

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**Author:** [@francium401](https://discourse.processing.org/u/francium401)\
**Replies:** 3\
**Last updated:** [November 27, 2018, 11:25pm UTC](https://discourse.processing.org/t/gradient-background-immediately-fades-away/6006 "2018-11-27T23:25:49Z")

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I’m very new to processing, and did try to follow some tutorials as to how to add a background gradient. However for some reason when I hit play, the gradient is visible but only for a split second at the start. It fades…

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