# Latest

**URL:** https://discourse.processing.org/latest.md?page=570

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

**Page:** 571

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## [Changing the 5000ms timeout?](https://discourse.processing.org/t/changing-the-5000ms-timeout/4729)

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**Author:** [@bbulkow](https://discourse.processing.org/u/bbulkow)\
**Replies:** 7\
**Last updated:** [October 24, 2018, 5:19pm UTC](https://discourse.processing.org/t/changing-the-5000ms-timeout/4729 "2018-10-24T17:19:12Z")

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I have some code where we’ve changed the initalization sequence, and we’re right up against the 5000ms timeout where, so I read, JOGL is waiting for an initial draw to the canvas. I’d really rather not put processing co…

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## [Color threadsafe in Processing?](https://discourse.processing.org/t/color-threadsafe-in-processing/4563)

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**Author:** [@gerome](https://discourse.processing.org/u/gerome)\
**Replies:** 11\
**Last updated:** [October 24, 2018, 5:15pm UTC](https://discourse.processing.org/t/color-threadsafe-in-processing/4563 "2018-10-24T17:15:49Z")

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I have two threads running in one sketch and have the problem that the colors interfere and flicker. the background color changes by setFill of a pShape in one thread. I suppose that there is no “clean” solution because …

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## [Library/Class Error](https://discourse.processing.org/t/library-class-error/4467)

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**Author:** [@JuniorGenius](https://discourse.processing.org/u/JuniorGenius)\
**Replies:** 11\
**Last updated:** [October 24, 2018, 3:40pm UTC](https://discourse.processing.org/t/library-class-error/4467 "2018-10-24T15:40:20Z")

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So I am creating a physics library, and I made a class for shapes. I included the class in the collisions file, tried creating a shape in the collisions class, and got the error “the class does not exist”. I tried moving…

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## [Null pointer exception](https://discourse.processing.org/t/null-pointer-exception/4807)

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**Author:** [@fonsinho](https://discourse.processing.org/u/fonsinho)\
**Replies:** 4\
**Last updated:** [October 24, 2018, 3:29pm UTC](https://discourse.processing.org/t/null-pointer-exception/4807 "2018-10-24T15:29:13Z")

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hola a todos, he pasado un pj5 a processing y me da una linea con null pointer exception…alguién puede ayudarme? gracias import processing.video.\*; Capture cam; MyPoint\[\] pts; PImage img; int nbW = 40, nbH = 20; v…

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## [Help changing colours in my animation](https://discourse.processing.org/t/help-changing-colours-in-my-animation/4799)

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**Author:** [@joe891](https://discourse.processing.org/u/joe891)\
**Replies:** 2\
**Last updated:** [October 24, 2018, 12:26pm UTC](https://discourse.processing.org/t/help-changing-colours-in-my-animation/4799 "2018-10-24T12:26:22Z")

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Hi! I want my 3 triangle to randomly be changing colours throughout the whole animation. I’m a little stuck on where to go next but this is what I have so far. float x = 0; float speed = 1; float r = random(255); float …

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## [Rotate a sinusoidal wave (2D traslation)](https://discourse.processing.org/t/rotate-a-sinusoidal-wave-2d-traslation/4796)

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**Author:** [@saotome](https://discourse.processing.org/u/saotome)\
**Replies:** 12\
**Last updated:** [October 24, 2018, 10:21am UTC](https://discourse.processing.org/t/rotate-a-sinusoidal-wave-2d-traslation/4796 "2018-10-24T10:21:00Z")

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Hello everybody This program simulate a sinusoidal wave running along x axis \`\` int xspacing = 16; // How far apart should each horizontal location be spaced int w; // Width of entire wave float theta …

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## [How to make a program that works by coloring each pixel by distance to another?](https://discourse.processing.org/t/how-to-make-a-program-that-works-by-coloring-each-pixel-by-distance-to-another/4669)

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**Author:** [@Lexyth](https://discourse.processing.org/u/Lexyth)\
**Replies:** 12\
**Last updated:** [October 23, 2018, 9:58pm UTC](https://discourse.processing.org/t/how-to-make-a-program-that-works-by-coloring-each-pixel-by-distance-to-another/4669 "2018-10-23T21:58:01Z")

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Hey, so the question might be very confusing, but its actually pretty simple^^ What i would like to do, is to write a program that has an unspecified number of Points (1-20 or so… maybe more) that all maintain a certain …

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## [How to connect (draw lines) of all elements (ellipses) of an ArrayList?](https://discourse.processing.org/t/how-to-connect-draw-lines-of-all-elements-ellipses-of-an-arraylist/4731)

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**Author:** [@philpq12](https://discourse.processing.org/u/philpq12)\
**Replies:** 5\
**Last updated:** [October 24, 2018, 7:47am UTC](https://discourse.processing.org/t/how-to-connect-draw-lines-of-all-elements-ellipses-of-an-arraylist/4731 "2018-10-24T07:47:35Z")

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Hi, In my project, I’m trying to draw a multitude of ellipses that will spawn randomly on the y-axis, all of them scrolling toward the left on the x-axis. Then after, my goal is to connected all those ellipses with a l…

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## [I made the smartphone application through processing android mode tool](https://discourse.processing.org/t/i-made-the-smartphone-application-through-processing-android-mode-tool/1403)

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**Author:** [@GWAK](https://discourse.processing.org/u/GWAK)\
**Replies:** 0\
**Last updated:** [July 1, 2018, 8:07am UTC](https://discourse.processing.org/t/i-made-the-smartphone-application-through-processing-android-mode-tool/1403 "2018-07-01T08:07:40Z")

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I made the smartphone application through processing android mode tool. VIDEO-YOUTUBE Good morning. nice to meet you. I created a smartphone application through a processing program. Have a good time. Tha…

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## [Camera SEEMS upside down](https://discourse.processing.org/t/camera-seems-upside-down/4787)

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**Author:** [@Grim4d](https://discourse.processing.org/u/Grim4d)\
**Replies:** 0\
**Last updated:** [October 23, 2018, 11:04pm UTC](https://discourse.processing.org/t/camera-seems-upside-down/4787 "2018-10-23T23:04:38Z")

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So I created a grid on the z x plane, and then drew small lines that showed the positive x, y, and z axis as red, green, and blue respectively. When I set the camera up I made the up values 0, 1, 0, which I’m assuming ma…

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## [Windows Defender reports virus in Downloads](https://discourse.processing.org/t/windows-defender-reports-virus-in-downloads/4742)

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**Author:** [@steved](https://discourse.processing.org/u/steved)\
**Replies:** 3\
**Last updated:** [October 23, 2018, 10:32pm UTC](https://discourse.processing.org/t/windows-defender-reports-virus-in-downloads/4742 "2018-10-23T22:32:45Z")

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Windows Defender reports virus in Downloads, on both 32 and 64 bit versions of Processing. I have tried again on a different machine (still with Windows 10) and get the same issue…

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## [Adding Texture(img);](https://discourse.processing.org/t/adding-texture-img/4573)

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**Author:** [@vanoevelenstef](https://discourse.processing.org/u/vanoevelenstef)\
**Replies:** 7\
**Last updated:** [October 23, 2018, 10:21pm UTC](https://discourse.processing.org/t/adding-texture-img/4573 "2018-10-23T22:21:45Z")

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Hey There peeps. I’m trying stuff out on the file from the Codingtrain’s SuperShape and i’m trying to add a texture(image) on the object instead of giving it a color. I tried to load in an image and set it up as a textu…

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## [Project creation error](https://discourse.processing.org/t/project-creation-error/4660)

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**Author:** [@ThatRetroGuy](https://discourse.processing.org/u/ThatRetroGuy)\
**Replies:** 1\
**Last updated:** [October 23, 2018, 10:07pm UTC](https://discourse.processing.org/t/project-creation-error/4660 "2018-10-23T22:07:02Z")

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Hi I’m trying to create a new processing eclipse project. This error message appears and ive tried using multiple other files. The error never goes away or simply changes to (file) does not contain processing libs. Co…

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## [XY Pad (OSC ) to procesing](https://discourse.processing.org/t/xy-pad-osc-to-procesing/4575)

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**Author:** [@zpyn](https://discourse.processing.org/u/zpyn)\
**Replies:** 5\
**Last updated:** [October 23, 2018, 9:29pm UTC](https://discourse.processing.org/t/xy-pad-osc-to-procesing/4575 "2018-10-23T21:29:23Z")

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Hi! Im a CG animator and Im learning a little of scripting to improve my skills. I was wondering if someone know how to get the x and y values of a XY Pad, using oscP5. (https://vimeo.com/14734980) I don’t have idea of…

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## [How to register 2 keys at a time](https://discourse.processing.org/t/how-to-register-2-keys-at-a-time/4635)

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**Author:** [@Schred](https://discourse.processing.org/u/Schred)\
**Replies:** 7\
**Last updated:** [October 23, 2018, 8:33pm UTC](https://discourse.processing.org/t/how-to-register-2-keys-at-a-time/4635 "2018-10-23T20:33:57Z")

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Hi, so I’m trying to make a small game in which you control a litlle space ship and dodge some stuff. Something like that. The player should be able to move in 8 directions, including the 4 diagonal ones. I guess you ca…

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## [Controlp5 - Buttons with private functions](https://discourse.processing.org/t/controlp5-buttons-with-private-functions/4641)

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**Author:** [@Zac-04](https://discourse.processing.org/u/Zac-04)\
**Replies:** 0\
**Last updated:** [October 19, 2018, 3:42pm UTC](https://discourse.processing.org/t/controlp5-buttons-with-private-functions/4641 "2018-10-19T15:42:12Z")

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Lets say I had a a method that was apple.eat() how would I put that in a button: cp5.addButton("apple.eat") doesn’t seem to work

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## [Novation LaunchController: Using a MIDI controller to make your sketches interactive \[new release\]](https://discourse.processing.org/t/novation-launchcontroller-using-a-midi-controller-to-make-your-sketches-interactive-new-release/4710)

<div class="topic-metadata">

**Author:** [@haschdl](https://discourse.processing.org/u/haschdl)\
**Replies:** 1\
**Last updated:** [October 23, 2018, 9:05pm UTC](https://discourse.processing.org/t/novation-launchcontroller-using-a-midi-controller-to-make-your-sketches-interactive-new-release/4710 "2018-10-23T21:05:23Z")

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I just published a new version of the library Novation LaunchController Client. If you create sketches in Processing, often times you need to adjust the values of variables, you can use the keyboard, the mouse, or an ex…

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## [Compare ArrayLists / detect line intersections](https://discourse.processing.org/t/compare-arraylists-detect-line-intersections/4509)

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**Author:** [@germaine](https://discourse.processing.org/u/germaine)\
**Replies:** 3\
**Last updated:** [October 23, 2018, 9:01pm UTC](https://discourse.processing.org/t/compare-arraylists-detect-line-intersections/4509 "2018-10-23T21:01:12Z")

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Hello! I’m trying to write code that checks if any two lines drawn on the canvas have intersecting points. Currently, I have an ArrayList of “Line” objects, each containing their own ArrayList of PVectors (“coords”). I …

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## [Value as a string from a void function](https://discourse.processing.org/t/value-as-a-string-from-a-void-function/4243)

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**Author:** [@netphysicist](https://discourse.processing.org/u/netphysicist)\
**Replies:** 17\
**Last updated:** [October 23, 2018, 8:50pm UTC](https://discourse.processing.org/t/value-as-a-string-from-a-void-function/4243 "2018-10-23T20:50:36Z")

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Hello,i have these two functions in the end of a code and i call into the draw() the function displayinformation() to show in the screen of Android the characteristics(Name, age,…) everytime i select a specific choice f…

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## [Interactive lightinstallation Processing with Arduino](https://discourse.processing.org/t/interactive-lightinstallation-processing-with-arduino/4690)

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**Author:** [@martinatina42](https://discourse.processing.org/u/martinatina42)\
**Replies:** 1\
**Last updated:** [October 23, 2018, 8:40pm UTC](https://discourse.processing.org/t/interactive-lightinstallation-processing-with-arduino/4690 "2018-10-23T20:40:11Z")

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Hi Forum I have a question regarding a code made in Processing which is also connected to Arduino. There is a buzzer which should be pushed and the signal goes directly to Processing and then to Arduino. The Code btw. …

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## [Use two texture with in a shader!](https://discourse.processing.org/t/use-two-texture-with-in-a-shader/4688)

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**Author:** [@bitCrasher](https://discourse.processing.org/u/bitCrasher)\
**Replies:** 1\
**Last updated:** [October 23, 2018, 8:37pm UTC](https://discourse.processing.org/t/use-two-texture-with-in-a-shader/4688 "2018-10-23T20:37:06Z")

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hi guys, my question today is quite simple i hope, i want to use 2 differ!ent textures in a shader. them are 2 images. i need to pass from processing the two textures but i don’t know how! can anyone help me please? g…

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## ["Rainbow" line; Running through colors](https://discourse.processing.org/t/rainbow-line-running-through-colors/4777)

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**Author:** [@Elrond\_void](https://discourse.processing.org/u/Elrond_void)\
**Replies:** 2\
**Last updated:** [October 23, 2018, 7:41pm UTC](https://discourse.processing.org/t/rainbow-line-running-through-colors/4777 "2018-10-23T19:41:10Z")

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I recently created a double pendulum and wanted to make the tracing line run through all the colors, I looked around and couldn’t find anything that did what I wanted so I made my own. float h = 0; float x = 0; void se…

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## [Sound in Processing](https://discourse.processing.org/t/sound-in-processing/4728)

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**Author:** [@Lore](https://discourse.processing.org/u/Lore)\
**Replies:** 3\
**Last updated:** [October 23, 2018, 6:34pm UTC](https://discourse.processing.org/t/sound-in-processing/4728 "2018-10-23T18:34:36Z")

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Hello, How do you stop a song that is playing? I know how to play a song in processing, but I was wondering how to make the current song stop playing. Here is my code, //Make movie variables //Load every movie //If to…

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## [Best random number generator](https://discourse.processing.org/t/best-random-number-generator/4674)

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**Author:** [@poppanona](https://discourse.processing.org/u/poppanona)\
**Replies:** 5\
**Last updated:** [October 23, 2018, 3:29pm UTC](https://discourse.processing.org/t/best-random-number-generator/4674 "2018-10-23T15:29:51Z")

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I have found that the random number function isn’t quite a normal distribution. My experiments result in errors over 10% at times, even with 100 samples. I am working on a coin toss program. Are there better formulation…

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## [P5.js application with backend](https://discourse.processing.org/t/p5-js-application-with-backend/1295)

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**Author:** [@RichardDL](https://discourse.processing.org/u/RichardDL)\
**Replies:** 8\
**Last updated:** [October 23, 2018, 3:30pm UTC](https://discourse.processing.org/t/p5-js-application-with-backend/1295 "2018-10-23T15:30:05Z")

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Hi, I’ve been using Java Processing for some while, now tried the p5.js examples on Windows and RPi. I’d like to be able to make a p5.js application on the RPi that auto-runs separately from the IDE, has a static url (…

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## [Add several values to IntList](https://discourse.processing.org/t/add-several-values-to-intlist/4779)

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**Author:** [@flashbacker](https://discourse.processing.org/u/flashbacker)\
**Replies:** 8\
**Last updated:** [October 23, 2018, 3:11pm UTC](https://discourse.processing.org/t/add-several-values-to-intlist/4779 "2018-10-23T15:11:41Z")

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Hi, I’m starting to use IntList in a project, not absolutely comfortable with everything yet… I’m seeing in the documentation that I can add several int at once with myList.append(values) or myList.append(list) but eac…

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## [Detecting highlighted text in a file](https://discourse.processing.org/t/detecting-highlighted-text-in-a-file/4724)

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**Author:** [@destro](https://discourse.processing.org/u/destro)\
**Replies:** 5\
**Last updated:** [October 23, 2018, 2:48pm UTC](https://discourse.processing.org/t/detecting-highlighted-text-in-a-file/4724 "2018-10-23T14:48:35Z")

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hi all, is it possible to be able to detect words highlighted in a text file? for instance, if i select “who” in text file, would i be able to save “who” in a variable? thanks in advance, destro

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## [Re Randomizing Variables](https://discourse.processing.org/t/re-randomizing-variables/4745)

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**Author:** [@klarj](https://discourse.processing.org/u/klarj)\
**Replies:** 3\
**Last updated:** [October 23, 2018, 2:07pm UTC](https://discourse.processing.org/t/re-randomizing-variables/4745 "2018-10-23T14:07:07Z")

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I’m trying to create a program where 1st a ball is randomly placed and when clicked on, the old one is removed and a new one is placed randomly. The problem is that even though I do random() again for that variable it do…

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## [Change the datatype returned from pow() function](https://discourse.processing.org/t/change-the-datatype-returned-from-pow-function/4771)

<div class="topic-metadata">

**Author:** [@Cowhead](https://discourse.processing.org/u/Cowhead)\
**Replies:** 1\
**Last updated:** [October 23, 2018, 11:35am UTC](https://discourse.processing.org/t/change-the-datatype-returned-from-pow-function/4771 "2018-10-23T11:35:11Z")

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I was wondering if it was possible to change the datatype returned from the pow() function and how to possibly do this. or if i have to make my own function. i need the pow() function to return a double instead of a floa…

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## [Beginner has a question about 3D drawing flicker](https://discourse.processing.org/t/beginner-has-a-question-about-3d-drawing-flicker/4666)

<div class="topic-metadata">

**Author:** [@wsnicol](https://discourse.processing.org/u/wsnicol)\
**Replies:** 4\
**Last updated:** [October 22, 2018, 10:26pm UTC](https://discourse.processing.org/t/beginner-has-a-question-about-3d-drawing-flicker/4666 "2018-10-22T22:26:16Z")

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A simple program used to introduce people to 3D drawing was working fine the other day but now the image is flickering, why is it doing this and how can I stop it ? size(100,100,P3D); background(0); translate(0,height…

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