# Processing

**URL:** https://discourse.processing.org/c/processing/6.md?page=104

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**Page:** 105

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## [Creating a death animation for snake](https://discourse.processing.org/t/creating-a-death-animation-for-snake/33475)

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**Author:** [@Addvac](https://discourse.processing.org/u/Addvac)\
**Replies:** 0\
**Last updated:** [November 12, 2021, 2:47pm UTC](https://discourse.processing.org/t/creating-a-death-animation-for-snake/33475 "2021-11-12T14:47:16Z")

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//Defining necessary variables and arrays ArrayList\<Integer\> x = new ArrayList\<Integer\>(), y = new ArrayList\<Integer\>(); //creates array lists for the x and y positions of the snake int …

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## [Help with incorporating mic inputs into my visuals](https://discourse.processing.org/t/help-with-incorporating-mic-inputs-into-my-visuals/33448)

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**Author:** [@YourLocalGrandma](https://discourse.processing.org/u/YourLocalGrandma)\
**Replies:** 0\
**Last updated:** [November 10, 2021, 9:46pm UTC](https://discourse.processing.org/t/help-with-incorporating-mic-inputs-into-my-visuals/33448 "2021-11-10T21:46:45Z")

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Hi Guys, would love it if someone could point me in the right direction here because I’m very stuck. My goal is to use the mic inputs to move the amplitude of the lines across the screen, creating sort of a sound visuali…

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## [Make a realtime serial plotter](https://discourse.processing.org/t/make-a-realtime-serial-plotter/33438)

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**Author:** [@anwar05](https://discourse.processing.org/u/anwar05)\
**Replies:** 12\
**Last updated:** [November 11, 2021, 9:31pm UTC](https://discourse.processing.org/t/make-a-realtime-serial-plotter/33438 "2021-11-11T21:31:32Z")

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Hello, I want to ask about the real time serial plotter, I have downloaded it from Sebastian Nilsson’s github, and have modified it as needed. But I’m confused to make my serial value as input update in the graph I creat…

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## [No idea what happened, getting a weird effect](https://discourse.processing.org/t/no-idea-what-happened-getting-a-weird-effect/33459)

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**Author:** [@Kenga123456](https://discourse.processing.org/u/Kenga123456)\
**Replies:** 0\
**Last updated:** [November 11, 2021, 2:24pm UTC](https://discourse.processing.org/t/no-idea-what-happened-getting-a-weird-effect/33459 "2021-11-11T14:24:24Z")

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int x = 10; int y = 10; int spacingX = 10; int spacingY = 10; int scalingNot = 255; void setup() { size(500, 500); } void draw () { background(255); for (int x = 0; x \< width; x = x + spacingX) { for (int y = 0; …

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## [Text following a sine wave pattern](https://discourse.processing.org/t/text-following-a-sine-wave-pattern/33453)

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**Author:** [@clintonva32](https://discourse.processing.org/u/clintonva32)\
**Replies:** 3\
**Last updated:** [November 11, 2021, 11:02am UTC](https://discourse.processing.org/t/text-following-a-sine-wave-pattern/33453 "2021-11-11T11:02:20Z")

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Hi. Trying to get some help with this code. Pretty much want to have each letter in the string be a part of a sine wave. Any idea how to do this? My code seems to be stacking each letter on top of each other. Might be th…

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## [My side scroller has a problem finding where the ground is](https://discourse.processing.org/t/my-side-scroller-has-a-problem-finding-where-the-ground-is/33444)

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**Author:** [@DividedRabbit](https://discourse.processing.org/u/DividedRabbit)\
**Replies:** 4\
**Last updated:** [November 11, 2021, 6:41am UTC](https://discourse.processing.org/t/my-side-scroller-has-a-problem-finding-where-the-ground-is/33444 "2021-11-11T06:41:16Z")

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https://drive.google.com/drive/folders/1qZGnHtEltQCCeqCsDzOSHIyZKUQMSOJt?usp=sharing Here is the drive with all of my code. I am trying to use a linear equation to determine the height of the ground, but for some reason…

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## [Getting yellow color despite only entering one value on fill()](https://discourse.processing.org/t/getting-yellow-color-despite-only-entering-one-value-on-fill/33446)

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**Author:** [@Kenga123456](https://discourse.processing.org/u/Kenga123456)\
**Replies:** 3\
**Last updated:** [November 10, 2021, 8:43pm UTC](https://discourse.processing.org/t/getting-yellow-color-despite-only-entering-one-value-on-fill/33446 "2021-11-10T20:43:10Z")

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int x = 10; int y = 10; int spacingX = 10; int spacingY = 10; void setup() { size(500, 500); } void draw () { background(255); for (int x = 0; x \< width; x = x + spacingX) { for (int y = 0; y \< height; y = y + sp…

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## [Grid of rectangles produces weird triangle pattern](https://discourse.processing.org/t/grid-of-rectangles-produces-weird-triangle-pattern/33432)

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**Author:** [@UnusualUsual](https://discourse.processing.org/u/UnusualUsual)\
**Replies:** 3\
**Last updated:** [November 10, 2021, 5:29pm UTC](https://discourse.processing.org/t/grid-of-rectangles-produces-weird-triangle-pattern/33432 "2021-11-10T17:29:55Z")

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I’m creating a grid of black rectangles on a white background and for some reason unknown to me, part of some rectangles are split and pushed up a pixel to make a weird triangle looking thing in the middle of the grid. …

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## [Ball Collision with Box: Booleans](https://discourse.processing.org/t/ball-collision-with-box-booleans/33392)

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**Author:** [@Chels](https://discourse.processing.org/u/Chels)\
**Replies:** 1\
**Last updated:** [November 8, 2021, 8:09am UTC](https://discourse.processing.org/t/ball-collision-with-box-booleans/33392 "2021-11-08T08:09:27Z")

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So I have my ball restarting on the left once it collides to the right side of the screen. I added a red square in the center of the screen and I want the color of the square to change green when the ball touches the squ…

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## [How to set the frequency of loaddata requests](https://discourse.processing.org/t/how-to-set-the-frequency-of-loaddata-requests/33442)

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**Author:** [@Arabesque0210](https://discourse.processing.org/u/Arabesque0210)\
**Replies:** 0\
**Last updated:** [November 10, 2021, 2:48pm UTC](https://discourse.processing.org/t/how-to-set-the-frequency-of-loaddata-requests/33442 "2021-11-10T14:48:49Z")

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Hi, I am still exploring this interesting code, but I met this problem today. I tried to use API to get real-time wind data from a website, but the free plan only allows me to request data 500 times a day. So I was won…

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## [Can't run Processing](https://discourse.processing.org/t/cant-run-processing/33294)

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**Author:** [@yalaniv](https://discourse.processing.org/u/yalaniv)\
**Replies:** 1\
**Last updated:** [November 10, 2021, 5:55am UTC](https://discourse.processing.org/t/cant-run-processing/33294 "2021-11-10T05:55:41Z")

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Recently I had to replace my Hdd, so I had to download processing again. Since then, I cannot run it, because it only shows the small black intro screen for a second, and it shut down. Any ideas?

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## [Getting a gradient RGB line using lerp](https://discourse.processing.org/t/getting-a-gradient-rgb-line-using-lerp/33424)

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**Author:** [@endymion](https://discourse.processing.org/u/endymion)\
**Replies:** 1\
**Last updated:** [November 9, 2021, 8:51pm UTC](https://discourse.processing.org/t/getting-a-gradient-rgb-line-using-lerp/33424 "2021-11-09T20:51:11Z")

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So I found some code that used lerp to create a gradient between black and white and I modified it to create a gradient between red and blue, but I’d like it to span the whole RGB spectrum: void gradient\_line( color s, …

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## [G4P Library : GTextField text alignment](https://discourse.processing.org/t/g4p-library-gtextfield-text-alignment/33319)

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**Author:** [@R2processing](https://discourse.processing.org/u/R2processing)\
**Replies:** 2\
**Last updated:** [November 9, 2021, 5:07am UTC](https://discourse.processing.org/t/g4p-library-gtextfield-text-alignment/33319 "2021-11-09T05:07:54Z")

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Hello, I’m using the useful G4P library. using txfTEST = new GTextField(this, 10, 20, 70, 20); txfTEST.setText(strTEST); pnlCtrl.addControl(txfTEST); allows me to define a GTextField object in the panel but the te…

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## [IndexOutOfBoundsException](https://discourse.processing.org/t/indexoutofboundsexception/12499)

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**Author:** [@bu.aus](https://discourse.processing.org/u/bu.aus)\
**Replies:** 3\
**Last updated:** [November 9, 2021, 1:19am UTC](https://discourse.processing.org/t/indexoutofboundsexception/12499 "2021-11-09T01:19:43Z")

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Hello, i copied a very simple code from the website,https://processing.org/reference/libraries/sound/SoundFile.html but turns out the problem:IndexOutOfBoundsException .I’ve checked that the file is in the data folder. …

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## [Size only accepts literals not expressions 4 beta](https://discourse.processing.org/t/size-only-accepts-literals-not-expressions-4-beta/33372)

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**Author:** [@seanc4s](https://discourse.processing.org/u/seanc4s)\
**Replies:** 4\
**Last updated:** [November 9, 2021, 12:12am UTC](https://discourse.processing.org/t/size-only-accepts-literals-not-expressions-4-beta/33372 "2021-11-09T00:12:15Z")

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float\[\] data=new float\[50000\]; void setup(){ size(300\*3,300); background(0); for(int i=0;i\<50000;i++){ data\[i\]=randomGaussian(); } for(int i=0;i\<50000;i+=2){ int x=150+int(50f\*data\[i\]); int y=150+in…

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## [Serial data from Arduino to Processing does not update](https://discourse.processing.org/t/serial-data-from-arduino-to-processing-does-not-update/33378)

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**Author:** [@BerndKoggel](https://discourse.processing.org/u/BerndKoggel)\
**Replies:** 4\
**Last updated:** [November 8, 2021, 3:07pm UTC](https://discourse.processing.org/t/serial-data-from-arduino-to-processing-does-not-update/33378 "2021-11-08T15:07:27Z")

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I have an arduino test wether two wires touch, this works. The data is stored in an array for each pin and given either a 1 or 0 if the wire connects to another. The Serial.print is used to send the data, the serial moni…

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## [Drag & Drop PGraphics](https://discourse.processing.org/t/drag-drop-pgraphics/33396)

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**Author:** [@rism](https://discourse.processing.org/u/rism)\
**Replies:** 2\
**Last updated:** [November 8, 2021, 2:48pm UTC](https://discourse.processing.org/t/drag-drop-pgraphics/33396 "2021-11-08T14:48:45Z")

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Hi, I am trying to move the square to another position but it forms a streak of squares instead when dragged. Here is what I have so far: PGraphics squares; float bx; float by; boolean locked = false; float xOffset …

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## [Why are two rects displayed](https://discourse.processing.org/t/why-are-two-rects-displayed/33393)

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**Author:** [@MoonAlien822](https://discourse.processing.org/u/MoonAlien822)\
**Replies:** 1\
**Last updated:** [November 8, 2021, 1:36pm UTC](https://discourse.processing.org/t/why-are-two-rects-displayed/33393 "2021-11-08T13:36:43Z")

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when i press on the kill icon, two rects are displayed when only one should

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## [Webcam capture and PGraphics](https://discourse.processing.org/t/webcam-capture-and-pgraphics/33389)

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**Author:** [@mario60](https://discourse.processing.org/u/mario60)\
**Replies:** 3\
**Last updated:** [November 8, 2021, 1:09pm UTC](https://discourse.processing.org/t/webcam-capture-and-pgraphics/33389 "2021-11-08T13:09:58Z")

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import processing.video.\*; Capture cam; PGraphics pg1; void setup() { size(950, 950); frameRate(10); pg1 = createGraphics(475, 475); String\[\] cameras = Capture.list(); if (cameras.length == 0) { pr…

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## [Casting 3d to 2d](https://discourse.processing.org/t/casting-3d-to-2d/33185)

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**Author:** [@Infi](https://discourse.processing.org/u/Infi)\
**Replies:** 8\
**Last updated:** [November 8, 2021, 12:30pm UTC](https://discourse.processing.org/t/casting-3d-to-2d/33185 "2021-11-08T12:30:20Z")

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Hello, I am searching for a method of casting a loaded 3d object into 2d image, similarly to 2D Topographical Map - #2 by solub Although i would need, instead of height contours, a full 2d image, where gray-scale repre…

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## [Can I rotate PGraphics by its center axis?](https://discourse.processing.org/t/can-i-rotate-pgraphics-by-its-center-axis/33398)

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**Author:** [@Skycstls](https://discourse.processing.org/u/Skycstls)\
**Replies:** 1\
**Last updated:** [November 8, 2021, 12:16pm UTC](https://discourse.processing.org/t/can-i-rotate-pgraphics-by-its-center-axis/33398 "2021-11-08T12:16:02Z")

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Hello processing forum! I have this little code working, it starts by creating a few PGraphics on an array like this: void shapesCreation(int nShapes) { shapes = new PGraphics\[nShapes\]; for (int i = 0; i \< shapes.l…

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## [Displaying movie in Processing not working!?](https://discourse.processing.org/t/displaying-movie-in-processing-not-working/33179)

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**Author:** [@xeronimo](https://discourse.processing.org/u/xeronimo)\
**Replies:** 2\
**Last updated:** [November 8, 2021, 8:55am UTC](https://discourse.processing.org/t/displaying-movie-in-processing-not-working/33179 "2021-11-08T08:55:54Z")

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Hi, I’m trying to import a movie into my sketch using the movie library. It used to work in the past but now it doesn’t … it crashes in P2D and P3D, and in the normal mode it shows the video in a distorted way It’s an…

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## [Efficiency of code with 100+ objects](https://discourse.processing.org/t/efficiency-of-code-with-100-objects/33236)

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**Author:** [@tribblesontoast](https://discourse.processing.org/u/tribblesontoast)\
**Replies:** 5\
**Last updated:** [November 8, 2021, 3:28am UTC](https://discourse.processing.org/t/efficiency-of-code-with-100-objects/33236 "2021-11-08T03:28:02Z")

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Hi all, I’m writing a program that has numerous moving objects on screen and my frame rate starts to take a serious hit at around 100 - 110 objects. I’ve seen programs with thousands running easily so clearly I’m writi…

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## [Math doesn't work?](https://discourse.processing.org/t/math-doesnt-work/33384)

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**Author:** [@stefanmz7](https://discourse.processing.org/u/stefanmz7)\
**Replies:** 11\
**Last updated:** [November 8, 2021, 1:24am UTC](https://discourse.processing.org/t/math-doesnt-work/33384 "2021-11-08T01:24:48Z")

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Hey so why when I do location.y-brick1.y ,location 1 is positive brick1 is -500 it gives out a negative number? Like location.y–500 is location.y +500 so that’s positive. Do math rules not apply in processing?

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## [Creating a word carpet by rotating and positioning a word a mulitple times](https://discourse.processing.org/t/creating-a-word-carpet-by-rotating-and-positioning-a-word-a-mulitple-times/33153)

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**Author:** [@ontherun](https://discourse.processing.org/u/ontherun)\
**Replies:** 7\
**Last updated:** [November 8, 2021, 12:26am UTC](https://discourse.processing.org/t/creating-a-word-carpet-by-rotating-and-positioning-a-word-a-mulitple-times/33153 "2021-11-08T00:26:30Z")

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Hi dear community, Im quite new into processing, but seeing more and more the advantages for generative design aspects and experiments. So for an analog project I would try out the digital dummy. As written in the head…

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## [Ball Moving Along the Screen Similar to the Game Pong](https://discourse.processing.org/t/ball-moving-along-the-screen-similar-to-the-game-pong/33388)

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**Author:** [@Chels](https://discourse.processing.org/u/Chels)\
**Replies:** 2\
**Last updated:** [November 7, 2021, 9:36pm UTC](https://discourse.processing.org/t/ball-moving-along-the-screen-similar-to-the-game-pong/33388 "2021-11-07T21:36:59Z")

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I’m fairly new to processing. So I searched up the Coding Train channel on YouTube and changed a bit of a code to not have the bouncing ball get cut out the window when it runs. Source: https://www.youtube.com/watch?v=Y…

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## [Struggling to create a gradient](https://discourse.processing.org/t/struggling-to-create-a-gradient/33355)

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**Author:** [@bcabc](https://discourse.processing.org/u/bcabc)\
**Replies:** 4\
**Last updated:** [November 7, 2021, 7:07pm UTC](https://discourse.processing.org/t/struggling-to-create-a-gradient/33355 "2021-11-07T19:07:41Z")

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hi there - i am looking to include gradients in my processing drawings. i am generating svg images, so i believe the P2D renderer isn’t for me. i’d also like to apply the gradients to large shapes made out of bezier cu…

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## [Connecting Perlin noise waves](https://discourse.processing.org/t/connecting-perlin-noise-waves/33359)

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**Author:** [@basielcole](https://discourse.processing.org/u/basielcole)\
**Replies:** 2\
**Last updated:** [November 7, 2021, 12:21pm UTC](https://discourse.processing.org/t/connecting-perlin-noise-waves/33359 "2021-11-07T12:21:32Z")

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Hi everyone, I have been trying to connect two or more waves generated with the noise() function. The idea is to get one continuous wave with specific areas having more/less noise added to them. Is there a simple way to …

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## [Insert a path into a flowfield](https://discourse.processing.org/t/insert-a-path-into-a-flowfield/33334)

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**Author:** [@sigbjorn](https://discourse.processing.org/u/sigbjorn)\
**Replies:** 0\
**Last updated:** [November 5, 2021, 1:26pm UTC](https://discourse.processing.org/t/insert-a-path-into-a-flowfield/33334 "2021-11-05T13:26:35Z")

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Hi I have an art project for my class. For this I would like to insert a path function to a flowfield. I feel like im almost done, but cant seem to place the last puzzle. For mye work I have been using the Coding trai…

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## [Pixelflow optical flow questions](https://discourse.processing.org/t/pixelflow-optical-flow-questions/33332)

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**Author:** [@jimjimmer](https://discourse.processing.org/u/jimjimmer)\
**Replies:** 0\
**Last updated:** [November 5, 2021, 11:39am UTC](https://discourse.processing.org/t/pixelflow-optical-flow-questions/33332 "2021-11-05T11:39:14Z")

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/\*\* \* \* PixelFlow | Copyright (C) 2017 Thomas Diewald - www.thomasdiewald.com \* \* https://github.com/diwi/PixelFlow.git \* \* A Processing/Java library for high performance GPU-Computing. \* MIT License: https://o…

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