# Processing

**URL:** https://discourse.processing.org/c/processing/6.md?page=240

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

**Page:** 241

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## [Making a 3D camera](https://discourse.processing.org/t/making-a-3d-camera/17357)

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**Author:** [@ArthusWQZ](https://discourse.processing.org/u/ArthusWQZ)\
**Replies:** 11\
**Last updated:** [January 28, 2020, 10:41pm UTC](https://discourse.processing.org/t/making-a-3d-camera/17357 "2020-01-28T22:41:12Z")

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Hello everyone, I recently started coding a 3d program, some kind of game, but I remain stuck because of one simple thing : how to make a 3d camera ? In fact, the program generates a cube, but I want it to move when I …

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## [Change world's gravity using keyPressed (Fisica)](https://discourse.processing.org/t/change-worlds-gravity-using-keypressed-fisica/17362)

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**Author:** [@floflopm](https://discourse.processing.org/u/floflopm)\
**Replies:** 3\
**Last updated:** [January 28, 2020, 5:06pm UTC](https://discourse.processing.org/t/change-worlds-gravity-using-keypressed-fisica/17362 "2020-01-28T17:06:01Z")

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Hi, I am using Fisica library in which I set gravity (gx, gy). I would like to be able to change the value of the gravity using keyPressed in a range of -100 to 100 so I can control the motion of balls from left to righ…

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## [Any Processing Sound Library Supporting .m4a?](https://discourse.processing.org/t/any-processing-sound-library-supporting-m4a/13722)

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**Author:** [@processingCendrum](https://discourse.processing.org/u/processingCendrum)\
**Replies:** 4\
**Last updated:** [January 28, 2020, 3:31pm UTC](https://discourse.processing.org/t/any-processing-sound-library-supporting-m4a/13722 "2020-01-28T15:31:56Z")

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I’m trying to create an interface to play and browse my music. Thing is, most of it is in .m4a, and neither the Sound library nor the Minim library seem to support that format. All my music is either in .m4a or in .mp3,…

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## [New to processing, I need some help with classes](https://discourse.processing.org/t/new-to-processing-i-need-some-help-with-classes/17156)

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**Author:** [@bugotc14](https://discourse.processing.org/u/bugotc14)\
**Replies:** 11\
**Last updated:** [January 28, 2020, 3:03pm UTC](https://discourse.processing.org/t/new-to-processing-i-need-some-help-with-classes/17156 "2020-01-28T15:03:16Z")

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yesterday I tried to make a program that displays a cool ellipse with ellipses around it and I made it and everything worked fine, I made a class named DotsArray and made the ellipse array an object, I even added a feat…

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## [java.lang.UnsatisfiedLinkError](https://discourse.processing.org/t/java-lang-unsatisfiedlinkerror/16848)

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**Author:** [@spflanze](https://discourse.processing.org/u/spflanze)\
**Replies:** 9\
**Last updated:** [January 28, 2020, 5:22am UTC](https://discourse.processing.org/t/java-lang-unsatisfiedlinkerror/16848 "2020-01-28T05:22:23Z")

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I am developing a Processing Sketch in Eclipse that uses USB by means of the serial port emulator in jssc.jar. It charts data received over the serial port as lines on a graph. When the program is run, the sketch window …

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## [Video library: grab specific frame of a movie](https://discourse.processing.org/t/video-library-grab-specific-frame-of-a-movie/17387)

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**Author:** [@keithhandy](https://discourse.processing.org/u/keithhandy)\
**Replies:** 2\
**Last updated:** [January 28, 2020, 4:07am UTC](https://discourse.processing.org/t/video-library-grab-specific-frame-of-a-movie/17387 "2020-01-28T04:07:02Z")

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Hi, I have been trying to write code to grab a specific frame from a movie file using the Movie object and the “jump” method, but I am unable to jump to a specific point in the movie unless the movie is playing. The onl…

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## [Query regarding best practices to credit original developers](https://discourse.processing.org/t/query-regarding-best-practices-to-credit-original-developers/17042)

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**Author:** [@pallav12](https://discourse.processing.org/u/pallav12)\
**Replies:** 6\
**Last updated:** [January 14, 2020, 9:54pm UTC](https://discourse.processing.org/t/query-regarding-best-practices-to-credit-original-developers/17042 "2020-01-14T21:54:42Z")

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Hello Everyone, I have created a processing library rainbow, its about creating an abstraction layer over fun challenges of Coding train. So you can play around with different examples. For that I have taken code from c…

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## [Recognize bodies involved in collision's class](https://discourse.processing.org/t/recognize-bodies-involved-in-collisions-class/17384)

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**Author:** [@MCGFP](https://discourse.processing.org/u/MCGFP)\
**Replies:** 0\
**Last updated:** [January 27, 2020, 8:56pm UTC](https://discourse.processing.org/t/recognize-bodies-involved-in-collisions-class/17384 "2020-01-27T20:56:31Z")

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Hi, I am using Fisica library for a game. I have different types of FCircle (circle2, circle2) of different size and one type of FBox rectangle1. I am able to generate actions when a circle collides with a rectangle (ma…

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## [Storing Point in a variable](https://discourse.processing.org/t/storing-point-in-a-variable/17381)

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**Author:** [@prathmesh](https://discourse.processing.org/u/prathmesh)\
**Replies:** 2\
**Last updated:** [January 27, 2020, 9:26pm UTC](https://discourse.processing.org/t/storing-point-in-a-variable/17381 "2020-01-27T21:26:13Z")

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Hello All, Why is the statement below invalid: float x = point(a,b); it gives me the error : void cannot be matched with int.(interesting!!) Is it not possible to store a point in a variable? I came across this while …

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## [How to code a YOUTUBE subscriber counter?](https://discourse.processing.org/t/how-to-code-a-youtube-subscriber-counter/17004)

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**Author:** [@iobotic](https://discourse.processing.org/u/iobotic)\
**Replies:** 5\
**Last updated:** [January 27, 2020, 5:10pm UTC](https://discourse.processing.org/t/how-to-code-a-youtube-subscriber-counter/17004 "2020-01-27T17:10:25Z")

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Hello Friends! My name is Hugo, I’m a new for here and I’m happy to join the community. :hugs: I would like to know how can I make a Youtube Subs Counter using processing? :star\_struck: My Idea is to use a Raspberry Pi…

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## [Output to PDF every 5 Seconds](https://discourse.processing.org/t/output-to-pdf-every-5-seconds/17125)

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**Author:** [@FutureDays](https://discourse.processing.org/u/FutureDays)\
**Replies:** 2\
**Last updated:** [January 21, 2020, 4:25pm UTC](https://discourse.processing.org/t/output-to-pdf-every-5-seconds/17125 "2020-01-21T16:25:28Z")

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Hello, I am a total newbie to Processing but am loving the learning. I have a question, how do I write a line of code that outputs a PDF to a folder on the desktop every 5 seconds. I have placed my code here for refer…

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## [Unable to write data in a text file](https://discourse.processing.org/t/unable-to-write-data-in-a-text-file/17374)

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**Author:** [@iamgsshetty](https://discourse.processing.org/u/iamgsshetty)\
**Replies:** 2\
**Last updated:** [January 27, 2020, 2:43pm UTC](https://discourse.processing.org/t/unable-to-write-data-in-a-text-file/17374 "2020-01-27T14:43:55Z")

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File getting created successfully but data is not getting written in file. code:- PrintWriter output; void setup() { // Create a new file in the sketch directory output = createWriter(“positions.txt”); } void draw…

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## [Why Ain't my Code working?](https://discourse.processing.org/t/why-aint-my-code-working/16800)

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**Author:** [@ctrembla](https://discourse.processing.org/u/ctrembla)\
**Replies:** 2\
**Last updated:** [January 27, 2020, 2:05pm UTC](https://discourse.processing.org/t/why-aint-my-code-working/16800 "2020-01-27T14:05:05Z")

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I’m trying to make a card game, but when I try to get the player’s hand in the correct spot. All 5 cards go to the last spot instead of staying where they suppose to. here setup Table enemyT; TableRow tr; int s = 75; A…

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## [Creating "boundaries" for my ball using max and min](https://discourse.processing.org/t/creating-boundaries-for-my-ball-using-max-and-min/17367)

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**Author:** [@AxFan](https://discourse.processing.org/u/AxFan)\
**Replies:** 3\
**Last updated:** [January 27, 2020, 6:49am UTC](https://discourse.processing.org/t/creating-boundaries-for-my-ball-using-max-and-min/17367 "2020-01-27T06:49:52Z")

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So I was supposed to create this joystick like program in one of my questions but Im not sure how I can use functions max and min so the ball doesnt fly past the canvas when Im controlling it with my mouse. float lineX …

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## [Drawing scaling based on position in window size?](https://discourse.processing.org/t/drawing-scaling-based-on-position-in-window-size/17303)

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**Author:** [@AxFan](https://discourse.processing.org/u/AxFan)\
**Replies:** 1\
**Last updated:** [January 27, 2020, 6:43am UTC](https://discourse.processing.org/t/drawing-scaling-based-on-position-in-window-size/17303 "2020-01-27T06:43:43Z")

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Hey guys so I want to know how a ball or drawing can be scaled as it moves from one area to the other? Say I have a ball and its being controlled by my mouse, at the bottom left corner its big, but as I move it towards t…

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## [Defining zones in a game](https://discourse.processing.org/t/defining-zones-in-a-game/17366)

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**Author:** [@floflopm](https://discourse.processing.org/u/floflopm)\
**Replies:** 0\
**Last updated:** [January 27, 2020, 2:02am UTC](https://discourse.processing.org/t/defining-zones-in-a-game/17366 "2020-01-27T02:02:53Z")

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Hi, I would like to define zones in a game (a range of x and y) in which events could occur. If possible, I would also like to set the background color for that zone. I am using the Fisica library. It would have the str…

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## [Draw lines through an array with a timer](https://discourse.processing.org/t/draw-lines-through-an-array-with-a-timer/17349)

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**Author:** [@Ona](https://discourse.processing.org/u/Ona)\
**Replies:** 1\
**Last updated:** [January 26, 2020, 3:03pm UTC](https://discourse.processing.org/t/draw-lines-through-an-array-with-a-timer/17349 "2020-01-26T15:03:34Z")

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hi, I’m writing a code for a project. At the moment my program can get lines out of a video image and display them. All the lines are displayed at once. Now I want every line to be displayed separately. So every 10 or 20…

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## [Is the new 3.5.4 infected? \[Solved: No\]](https://discourse.processing.org/t/is-the-new-3-5-4-infected-solved-no/17346)

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**Author:** [@anon68884268](https://discourse.processing.org/u/anon68884268)\
**Replies:** 2\
**Last updated:** [January 26, 2020, 1:52pm UTC](https://discourse.processing.org/t/is-the-new-3-5-4-infected-solved-no/17346 "2020-01-26T13:52:49Z")

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OS: Microsoft Windows \[Version 10.0.18363.592\] VirusTotal Scan: https://www.virustotal.com/gui/file/404d86152460e4ab24f9e85cd7103790ae3b4bc74202b11d325b8573bb38e909/detection I just downloaded the new 3.5.4 version of …

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## [What is the libpng warning?](https://discourse.processing.org/t/what-is-the-libpng-warning/17309)

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**Author:** [@KEEP](https://discourse.processing.org/u/KEEP)\
**Replies:** 7\
**Last updated:** [January 26, 2020, 1:30pm UTC](https://discourse.processing.org/t/what-is-the-libpng-warning/17309 "2020-01-26T13:30:21Z")

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Excuse me?How to solve the libpng warning ?please help me! thanks!

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## [How to place Transparent glass over human body..idea request](https://discourse.processing.org/t/how-to-place-transparent-glass-over-human-body-idea-request/17273)

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**Author:** [@adaptinnovative](https://discourse.processing.org/u/adaptinnovative)\
**Replies:** 8\
**Last updated:** [January 26, 2020, 1:25pm UTC](https://discourse.processing.org/t/how-to-place-transparent-glass-over-human-body-idea-request/17273 "2020-01-26T13:25:54Z")

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Any idea how to get this done in processing. I can load the human figure as an .obj file but to get the transparent slab of glass to be Frontal Sagittal Transverse As seen in the image. Any ideas?

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## [SVG shape distortion when importing back in processing](https://discourse.processing.org/t/svg-shape-distortion-when-importing-back-in-processing/17322)

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**Author:** [@Ruchi](https://discourse.processing.org/u/Ruchi)\
**Replies:** 4\
**Last updated:** [January 26, 2020, 1:21pm UTC](https://discourse.processing.org/t/svg-shape-distortion-when-importing-back-in-processing/17322 "2020-01-26T13:21:12Z")

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// Shape import processing.svg.\*; float lengthD; float ellipseR; float rhombusW; float rhombusH; void setup() { size(800, 800); beginRecord(SVG, "SHAPE.svg"); smooth(); noLoop(); lengthD = sqrt(pow(w…

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## [Reading Youtube API?](https://discourse.processing.org/t/reading-youtube-api/17331)

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**Author:** [@iobotic](https://discourse.processing.org/u/iobotic)\
**Replies:** 2\
**Last updated:** [January 25, 2020, 11:40pm UTC](https://discourse.processing.org/t/reading-youtube-api/17331 "2020-01-25T23:40:26Z")

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Hello friends, someone can you provide some example about how can I read the Youtube API to get the subscribers number? Thanks :hugs:

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## [Accessing variables in an array of different objects](https://discourse.processing.org/t/accessing-variables-in-an-array-of-different-objects/17324)

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**Author:** [@J0R1AN](https://discourse.processing.org/u/J0R1AN)\
**Replies:** 4\
**Last updated:** [January 25, 2020, 11:09pm UTC](https://discourse.processing.org/t/accessing-variables-in-an-array-of-different-objects/17324 "2020-01-25T23:09:21Z")

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I am working on a bigger project with a game that has an AI and Human player. I want to expand it so I have an array of players that I can set to whatever I want. The AI and Human classes are different in logic but have …

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## [Static bodies in Fisica](https://discourse.processing.org/t/static-bodies-in-fisica/17332)

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**Author:** [@floflopm](https://discourse.processing.org/u/floflopm)\
**Replies:** 0\
**Last updated:** [January 25, 2020, 8:25pm UTC](https://discourse.processing.org/t/static-bodies-in-fisica/17332 "2020-01-25T20:25:23Z")

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Hi, I am using the fisica library to create a game in which I have to define a set of boundaries with FBox. The problem is I am not able to disable the mouseDragged function (the player can move the boundaries, so the g…

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## [Arranging an array of objects in a grid](https://discourse.processing.org/t/arranging-an-array-of-objects-in-a-grid/16969)

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**Author:** [@debxyz](https://discourse.processing.org/u/debxyz)\
**Replies:** 34\
**Last updated:** [January 25, 2020, 8:23pm UTC](https://discourse.processing.org/t/arranging-an-array-of-objects-in-a-grid/16969 "2020-01-25T20:23:17Z")

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I’m trying to further my understanding of how to implement an object array with this simple sketch. I created a while loop within a while loop to create the grid. I added the object array But the screen appears empty w…

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## [Sketch 84552 don't work, error](https://discourse.processing.org/t/sketch-84552-dont-work-error/17114)

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**Author:** [@motorimicro](https://discourse.processing.org/u/motorimicro)\
**Replies:** 7\
**Last updated:** [January 25, 2020, 7:10pm UTC](https://discourse.processing.org/t/sketch-84552-dont-work-error/17114 "2020-01-25T19:10:12Z")

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here where download the sketch: Hi, I have just entered the world of processing and I am really a beginner, I have only a little understood how to use processing sketches by trial and error. I’m trying to run the …

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## [Repeated alpha not reaching full opacity](https://discourse.processing.org/t/repeated-alpha-not-reaching-full-opacity/16890)

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**Author:** [@mortap](https://discourse.processing.org/u/mortap)\
**Replies:** 12\
**Last updated:** [January 25, 2020, 6:20pm UTC](https://discourse.processing.org/t/repeated-alpha-not-reaching-full-opacity/16890 "2020-01-25T18:20:18Z")

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Hello, I’m using a rectangle filled with white and a certain alpha value at the beginning of draw, and I would think that if done enough times that eventually the first thing drawn in setup would eventually be totally w…

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## [How does one use XInput (Xbox Controller) inputs in Processing](https://discourse.processing.org/t/how-does-one-use-xinput-xbox-controller-inputs-in-processing/17327)

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**Author:** [@TechMaster04](https://discourse.processing.org/u/TechMaster04)\
**Replies:** 2\
**Last updated:** [January 25, 2020, 4:32pm UTC](https://discourse.processing.org/t/how-does-one-use-xinput-xbox-controller-inputs-in-processing/17327 "2020-01-25T16:32:12Z")

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Hello all I’m working on a queue manager (Check it out Here ) and thought it would be nice to add some Easter eggs that can be triggered with an Xbox Controller. Does anyone know how to detect XInput/Xbox controller inp…

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## [CPU usage of sound and image](https://discourse.processing.org/t/cpu-usage-of-sound-and-image/17182)

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**Author:** [@Jean-no](https://discourse.processing.org/u/Jean-no)\
**Replies:** 5\
**Last updated:** [January 25, 2020, 4:11pm UTC](https://discourse.processing.org/t/cpu-usage-of-sound-and-image/17182 "2020-01-25T16:11:00Z")

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Hi everyone I’m working on some code where thousands of soundfiles (using the sounde library) and images are loaded, one at a time. To be precise, one image and one soundfile are loaded, then played simultaneously. The …

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## [How can we draw a graphe from a video capture ?!](https://discourse.processing.org/t/how-can-we-draw-a-graphe-from-a-video-capture/17286)

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**Author:** [@Azdn](https://discourse.processing.org/u/Azdn)\
**Replies:** 8\
**Last updated:** [January 25, 2020, 11:45am UTC](https://discourse.processing.org/t/how-can-we-draw-a-graphe-from-a-video-capture/17286 "2020-01-25T11:45:30Z")

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Hi !! I want to draw a graph that processes data from a video capture something like RGB values ​​based on pixel location or brightness based on pixel location … My project is blocked in this step so i will be so tha…

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