# Processing

**URL:** https://discourse.processing.org/c/processing/6.md?no_subcategories=false&page=159

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

**Page:** 160

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## [How to give circles(ellipses) certain distance, apart from each other? giving random position every time I press key](https://discourse.processing.org/t/how-to-give-circles-ellipses-certain-distance-apart-from-each-other-giving-random-position-every-time-i-press-key/26646)

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**Author:** [@yewon](https://discourse.processing.org/u/yewon)\
**Replies:** 10\
**Last updated:** [January 1, 2021, 2:01pm UTC](https://discourse.processing.org/t/how-to-give-circles-ellipses-certain-distance-apart-from-each-other-giving-random-position-every-time-i-press-key/26646 "2021-01-01T14:01:53Z")

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Hi. what I want to do is, Every time I press key, I want to reposition my object inside screen, but each of my object should be apart from each other by certain distance. for example at least the distance should be lar…

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## [Why multiple windows can't show sketch correctly?](https://discourse.processing.org/t/why-multiple-windows-cant-show-sketch-correctly/26659)

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**Author:** [@IpNeNaEcRe](https://discourse.processing.org/u/IpNeNaEcRe)\
**Replies:** 2\
**Last updated:** [January 1, 2021, 7:43am UTC](https://discourse.processing.org/t/why-multiple-windows-cant-show-sketch-correctly/26659 "2021-01-01T07:43:21Z")

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I want to create multiple windows, one to interact (put slide bar in it) and other to show the sketch. Now I can draw line/rectangle/ellipse directly in the second window. When these things in another class and use the c…

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## [Interacting with images](https://discourse.processing.org/t/interacting-with-images/26648)

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**Author:** [@PIlw](https://discourse.processing.org/u/PIlw)\
**Replies:** 2\
**Last updated:** [December 31, 2020, 11:09pm UTC](https://discourse.processing.org/t/interacting-with-images/26648 "2020-12-31T23:09:32Z")

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Hello guys, I am a beginner on processing and i would like to do something : The thing would be to have 2 images mooving across the screen and when they touch eachother they hit and change directions. for the moment I’…

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## [Need a review to improve this :)](https://discourse.processing.org/t/need-a-review-to-improve-this/26630)

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**Author:** [@jeanphih](https://discourse.processing.org/u/jeanphih)\
**Replies:** 7\
**Last updated:** [December 31, 2020, 6:50pm UTC](https://discourse.processing.org/t/need-a-review-to-improve-this/26630 "2020-12-31T18:50:09Z")

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please format code with \</\> button \* homework policy \* asking questions Hello, I need some help, i have done this job , could you tell me how i can make my code better ? Here is the code, it s juste some tips to im…

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## [Sampling Incoming data from serial port](https://discourse.processing.org/t/sampling-incoming-data-from-serial-port/26600)

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**Author:** [@saaqib.m](https://discourse.processing.org/u/saaqib.m)\
**Replies:** 2\
**Last updated:** [December 31, 2020, 6:08pm UTC](https://discourse.processing.org/t/sampling-incoming-data-from-serial-port/26600 "2020-12-31T18:08:01Z")

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please format code with \</\> button \* homework policy \* asking questions My code takes incoming data and stores it in a table but currently it takes in all the values that come in to the serial port. I would like to m…

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## [QuickTime movie is not available](https://discourse.processing.org/t/quicktime-movie-is-not-available/26638)

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**Author:** [@ssskkk](https://discourse.processing.org/u/ssskkk)\
**Replies:** 1\
**Last updated:** [December 31, 2020, 3:15pm UTC](https://discourse.processing.org/t/quicktime-movie-is-not-available/26638 "2020-12-31T15:15:14Z")

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Hi, I tried to make movie from QuickTime Movie Maker. I used 「saveFrame(“frames/####.png”);」 in my code, confirmed frame folder, and chose the folder in the QuickTime Movie Maker. but I still can’t push「Create movie」but…

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## [Can someone explain noise() aka perlinNoise() function?](https://discourse.processing.org/t/can-someone-explain-noise-aka-perlinnoise-function/26627)

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**Author:** [@CodeMasterX](https://discourse.processing.org/u/CodeMasterX)\
**Replies:** 8\
**Last updated:** [December 31, 2020, 1:55pm UTC](https://discourse.processing.org/t/can-someone-explain-noise-aka-perlinnoise-function/26627 "2020-12-31T13:55:29Z")

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Hi! How do I use noise()? I tried a few times but still nothing. I know you can enter a 1D, 2D or 3D input. but this happen void setup() { size(600,600); } void draw() { for(int i = 0; i \< width; i++) { for…

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## [Animated Mosaic in Processing](https://discourse.processing.org/t/animated-mosaic-in-processing/26609)

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**Author:** [@Jboon](https://discourse.processing.org/u/Jboon)\
**Replies:** 1\
**Last updated:** [December 31, 2020, 1:05pm UTC](https://discourse.processing.org/t/animated-mosaic-in-processing/26609 "2020-12-31T13:05:52Z")

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So I’ve watched Dan Shiffman’s lesson on the mosaic and I’m pasting here the code from the lesson and I could understand it (processing newbie here!). What I’d like to do and would appreciate some help with is animating …

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## [Galaga scrolling background](https://discourse.processing.org/t/galaga-scrolling-background/26527)

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**Author:** [@lionR](https://discourse.processing.org/u/lionR)\
**Replies:** 3\
**Last updated:** [December 31, 2020, 1:05pm UTC](https://discourse.processing.org/t/galaga-scrolling-background/26527 "2020-12-31T13:05:42Z")

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I have to create a project in which I chose to create Galaga. I want a vertically scrolling background but don’t know how to achieve that. How would you guys go about something like that?

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## [Multiplication bug](https://discourse.processing.org/t/multiplication-bug/26619)

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**Author:** [@Javier](https://discourse.processing.org/u/Javier)\
**Replies:** 16\
**Last updated:** [December 30, 2020, 11:09pm UTC](https://discourse.processing.org/t/multiplication-bug/26619 "2020-12-30T23:09:29Z")

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Good morning! Can anybody explain to me why the return value of t is -8.311896E7? There is a max value that a variable can have? I can’t understand why it is happening. I have read the reference guide of Processing, …

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## [Move Map depending on character position](https://discourse.processing.org/t/move-map-depending-on-character-position/26610)

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**Author:** [@corken](https://discourse.processing.org/u/corken)\
**Replies:** 2\
**Last updated:** [December 30, 2020, 10:24pm UTC](https://discourse.processing.org/t/move-map-depending-on-character-position/26610 "2020-12-30T22:24:35Z")

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Hello I want to move my tiledMap depending on my characters position. But when I simply set the maps position to the characters position the collision detection goes wild. Any solutions?’ What I tried was map.draw(posi…

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## [Is it possible to use Compute Shader in Processing?](https://discourse.processing.org/t/is-it-possible-to-use-compute-shader-in-processing/4353)

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**Author:** [@Okdalto](https://discourse.processing.org/u/Okdalto)\
**Replies:** 2\
**Last updated:** [December 30, 2020, 6:49pm UTC](https://discourse.processing.org/t/is-it-possible-to-use-compute-shader-in-processing/4353 "2020-12-30T18:49:05Z")

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I use Compute Shader in Unity to control hundreds of particles and wondering if it’s possible to use Compute Shader in Processing too. If it is, where can I find references?

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## [Turning characters of a String into rectangles](https://discourse.processing.org/t/turning-characters-of-a-string-into-rectangles/26580)

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**Author:** [@Sophie](https://discourse.processing.org/u/Sophie)\
**Replies:** 11\
**Last updated:** [December 30, 2020, 2:04pm UTC](https://discourse.processing.org/t/turning-characters-of-a-string-into-rectangles/26580 "2020-12-30T14:04:42Z")

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Hello, I’m having trouble with my code. Basically, I have a text and want every letter to be replaced by a rectangle matching the letter with different colours in a row next to each other. It might seem stupid, but the…

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## [Sketch is running at low framerate (3fps) i don't know why](https://discourse.processing.org/t/sketch-is-running-at-low-framerate-3fps-i-dont-know-why/26607)

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**Author:** [@WillG](https://discourse.processing.org/u/WillG)\
**Replies:** 2\
**Last updated:** [December 30, 2020, 1:54pm UTC](https://discourse.processing.org/t/sketch-is-running-at-low-framerate-3fps-i-dont-know-why/26607 "2020-12-30T13:54:25Z")

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Hello! I’m a student and i have to create a sketch with bus point and density at these bus points. In fact all my sketch is working but at a very low framerate even if i put frameRate(30 or 60). Can someone help me ple…

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## [How to collision detection?](https://discourse.processing.org/t/how-to-collision-detection/26597)

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**Author:** [@corken](https://discourse.processing.org/u/corken)\
**Replies:** 0\
**Last updated:** [December 29, 2020, 8:30pm UTC](https://discourse.processing.org/t/how-to-collision-detection/26597 "2020-12-29T20:30:39Z")

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Hello I try to make a Mario Bros Game. I need some help with the collision. It already detects collision by checking if the tiles around him are an object tile (tile with other value than -1). The problem is that there …

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## [Kinect v2 resize depth image and color data to same aspect ratio and size](https://discourse.processing.org/t/kinect-v2-resize-depth-image-and-color-data-to-same-aspect-ratio-and-size/26596)

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**Author:** [@Ackados](https://discourse.processing.org/u/Ackados)\
**Replies:** 0\
**Last updated:** [December 29, 2020, 8:07pm UTC](https://discourse.processing.org/t/kinect-v2-resize-depth-image-and-color-data-to-same-aspect-ratio-and-size/26596 "2020-12-29T20:07:53Z")

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So the Kinect v2 has a color stream of 1920 x 1080. The depth stream is 512 x 424. The FOV is also different from what I can tell. I tried to resize both streams to 500 x 500 (the size of my canvas). Data from here. if…

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## [Help with objects](https://discourse.processing.org/t/help-with-objects/26590)

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**Author:** [@CodeMasterX](https://discourse.processing.org/u/CodeMasterX)\
**Replies:** 2\
**Last updated:** [December 29, 2020, 6:02pm UTC](https://discourse.processing.org/t/help-with-objects/26590 "2020-12-29T18:02:02Z")

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Hi! I always had the issue with objects. I want to replicate PVector a = new PVector(x,y,z) with the class Circles. So something like ArrayList\<Circles\> circle = new ArrayList\<Circles\>() circle.add(new Circles( x, y,…

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## [Beginner Q: Creating Grids and Interacting With Them](https://discourse.processing.org/t/beginner-q-creating-grids-and-interacting-with-them/26588)

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**Author:** [@alenmartel](https://discourse.processing.org/u/alenmartel)\
**Replies:** 8\
**Last updated:** [December 29, 2020, 4:13pm UTC](https://discourse.processing.org/t/beginner-q-creating-grids-and-interacting-with-them/26588 "2020-12-29T16:13:23Z")

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Hi all - I’m brand new to Processing (and coding). I’ve done a few hours of coding now (learning via the Learning Processing book by Daniel Shifman) and have taken myself to task with the homework as well as creating a l…

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## [Using variables with existing variables](https://discourse.processing.org/t/using-variables-with-existing-variables/26584)

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**Author:** [@felix.west](https://discourse.processing.org/u/felix.west)\
**Replies:** 3\
**Last updated:** [December 29, 2020, 3:59pm UTC](https://discourse.processing.org/t/using-variables-with-existing-variables/26584 "2020-12-29T15:59:35Z")

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Hi, I’d like to use a variable for an ellipse using another variable already written above. ex: int diameter = 50 int positionX = 200 int positionY = 200 –\> int ellipse1= ellipse(positionX, positionY, dia, dia) So…

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## [How to change the equation into a code in an nth pendulum?](https://discourse.processing.org/t/how-to-change-the-equation-into-a-code-in-an-nth-pendulum/26558)

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**Author:** [@Rafsing](https://discourse.processing.org/u/Rafsing)\
**Replies:** 5\
**Last updated:** [December 29, 2020, 12:28pm UTC](https://discourse.processing.org/t/how-to-change-the-equation-into-a-code-in-an-nth-pendulum/26558 "2020-12-29T12:28:12Z")

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I want to simulate the nth level pendulum (double, triple and so on). I found the equations for the acceleration of the nth pendulum on this page: https://www.researchgate.net/publication/336868500\_Equations\_of\_Motion\_Fo…

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## [Own programming language: How nested for-loop?](https://discourse.processing.org/t/own-programming-language-how-nested-for-loop/26396)

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**Author:** [@Chrisir](https://discourse.processing.org/u/Chrisir)\
**Replies:** 3\
**Last updated:** [December 26, 2020, 11:20am UTC](https://discourse.processing.org/t/own-programming-language-how-nested-for-loop/26396 "2020-12-26T11:20:57Z")

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Hello all, I am doing my own programming language at the moment. An interpreter language. When a for-loop is, not so difficult. I have the start line and he jumps x-times back to the start line ( “{” ) from the end li…

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## [Code android e arduino](https://discourse.processing.org/t/code-android-e-arduino/26364)

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**Author:** [@r0x15](https://discourse.processing.org/u/r0x15)\
**Replies:** 20\
**Last updated:** [December 28, 2020, 9:06pm UTC](https://discourse.processing.org/t/code-android-e-arduino/26364 "2020-12-28T21:06:56Z")

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But on processig for Android it is possible that no one has ever used a slider code and an LED to drive Arduino via bluetooth it seems very strange to me

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## [Drawing polygons with common side](https://discourse.processing.org/t/drawing-polygons-with-common-side/26550)

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**Author:** [@ssdesign](https://discourse.processing.org/u/ssdesign)\
**Replies:** 5\
**Last updated:** [December 28, 2020, 7:27pm UTC](https://discourse.processing.org/t/drawing-polygons-with-common-side/26550 "2020-12-28T19:27:24Z")

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I am trying to create multiple polygons with common sides as shown in this video Somehow, if I follow the principle of first drawing a hexagon and then dividing the radius into 6 parts to get the offset dim…

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## [Custom svg files don't render?](https://discourse.processing.org/t/custom-svg-files-dont-render/26434)

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**Author:** [@canslp](https://discourse.processing.org/u/canslp)\
**Replies:** 7\
**Last updated:** [December 28, 2020, 3:14pm UTC](https://discourse.processing.org/t/custom-svg-files-dont-render/26434 "2020-12-28T15:14:09Z")

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so i’m just testing out how processing renders svg files and for some reason it will only work with test ones i’ve downloaded from the internet, and the custom ones i exported from inkscape will compile but don’t show up…

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## [Custom svg files don't render](https://discourse.processing.org/t/custom-svg-files-dont-render/26480)

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**Author:** [@canslp](https://discourse.processing.org/u/canslp)\
**Replies:** 3\
**Last updated:** [December 28, 2020, 3:13pm UTC](https://discourse.processing.org/t/custom-svg-files-dont-render/26480 "2020-12-28T15:13:21Z")

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made a post about this a couple days ago but i couldn’t get the actual data past the spam filter so i’m trying again. i can’t get any custom made svgs to render in processing. test ones i download from the internet work …

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## [Can someone tell me what is KB error and of course with solution (memory issue)](https://discourse.processing.org/t/can-someone-tell-me-what-is-kb-error-and-of-course-with-solution-memory-issue/26554)

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**Author:** [@clay21](https://discourse.processing.org/u/clay21)\
**Replies:** 17\
**Last updated:** [December 28, 2020, 1:43pm UTC](https://discourse.processing.org/t/can-someone-tell-me-what-is-kb-error-and-of-course-with-solution-memory-issue/26554 "2020-12-28T13:43:49Z")

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Hello i got like kb error i guess im not giving enough ram for java and i dont know how can i give more can someone tell me how :slight\_smile: Thank you Already

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## [Real-Time Py and Processing](https://discourse.processing.org/t/real-time-py-and-processing/26551)

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**Author:** [@Ginopalombi](https://discourse.processing.org/u/Ginopalombi)\
**Replies:** 3\
**Last updated:** [December 28, 2020, 12:28pm UTC](https://discourse.processing.org/t/real-time-py-and-processing/26551 "2020-12-28T12:28:57Z")

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please format code with \</\> button \* homework policy \* asking questions Hello, I’m looking for a solution that can send in real-time an array from python to processing. I think that i may use the OSC, but I’m a begi…

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## [I am making a project where the ball follows when i click the mouse, but that is not happening. Can anyone help?](https://discourse.processing.org/t/i-am-making-a-project-where-the-ball-follows-when-i-click-the-mouse-but-that-is-not-happening-can-anyone-help/26352)

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**Author:** [@880597](https://discourse.processing.org/u/880597)\
**Replies:** 3\
**Last updated:** [December 27, 2020, 11:17pm UTC](https://discourse.processing.org/t/i-am-making-a-project-where-the-ball-follows-when-i-click-the-mouse-but-that-is-not-happening-can-anyone-help/26352 "2020-12-27T23:17:41Z")

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I do not know how to fix the blue color only in the box, also I am trying to use mouse clicked, so that when the mouse is clicked the ball follows it and returns back to the rectangle, but that is not happening. Can some…

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## [NullPointerException with arrays help](https://discourse.processing.org/t/nullpointerexception-with-arrays-help/26543)

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**Author:** [@Ironbatman1](https://discourse.processing.org/u/Ironbatman1)\
**Replies:** 3\
**Last updated:** [December 27, 2020, 10:57pm UTC](https://discourse.processing.org/t/nullpointerexception-with-arrays-help/26543 "2020-12-27T22:57:59Z")

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Hey so it’s an array of Test (custom object/class) called tests and I’m trying to do clearing with all objects in the array hence the for loop. so I set them and when I try to use it breaks and gives a null pointer at te…

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## [Finding a fixpoint for the corner of a moveable camera in P3D Need urgent help](https://discourse.processing.org/t/finding-a-fixpoint-for-the-corner-of-a-moveable-camera-in-p3d-need-urgent-help/26482)

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**Author:** [@SailorToei](https://discourse.processing.org/u/SailorToei)\
**Replies:** 13\
**Last updated:** [December 27, 2020, 2:20pm UTC](https://discourse.processing.org/t/finding-a-fixpoint-for-the-corner-of-a-moveable-camera-in-p3d-need-urgent-help/26482 "2020-12-27T14:20:34Z")

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Hello everybody, currently I am working on a game in 3D where the camera moves when there’s deviation of mouseX from the middle of the screen. It’s turning around the character, and when c is pressed, it switches to ego-…

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