# Processing

**URL:** https://discourse.processing.org/c/processing/6.md?page=158

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**Page:** 159

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## [How to freeze a draw loop?](https://discourse.processing.org/t/how-to-freeze-a-draw-loop/2741)

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**Author:** [@wrongexit](https://discourse.processing.org/u/wrongexit)\
**Replies:** 7\
**Last updated:** [August 18, 2018, 3:12am UTC](https://discourse.processing.org/t/how-to-freeze-a-draw-loop/2741 "2018-08-18T03:12:50Z")

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I have a draw loop that makes a new graphic each time. I want to be able to pause the loop by clicking the mouse when I see a graphic that I like. But everything I’ve tried fails to stop on the current frame. It’s always…

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## [Simple sketch issue (mouse over sets color)](https://discourse.processing.org/t/simple-sketch-issue-mouse-over-sets-color/26806)

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**Author:** [@DamoBailey](https://discourse.processing.org/u/DamoBailey)\
**Replies:** 13\
**Last updated:** [January 6, 2021, 7:28am UTC](https://discourse.processing.org/t/simple-sketch-issue-mouse-over-sets-color/26806 "2021-01-06T07:28:32Z")

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Hi I am a complete beginner and am working on the following project: Create a 500x500 grey area split into 4 equal quadrants. Show one quadrant as blue when the mouse is in that quadrant (all other quadrants shown as g…

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## [How do nested arrays such as IntDict\[\] work? (Processing 3.5.4)](https://discourse.processing.org/t/how-do-nested-arrays-such-as-intdict-work-processing-3-5-4/26818)

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**Author:** [@Anon0908](https://discourse.processing.org/u/Anon0908)\
**Replies:** 1\
**Last updated:** [January 6, 2021, 7:05am UTC](https://discourse.processing.org/t/how-do-nested-arrays-such-as-intdict-work-processing-3-5-4/26818 "2021-01-06T07:05:03Z")

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How do I properly invoke array commands such as append() on an IntDict\[\] array? For example, this is my current sketch testing such a thing: IntDict\[\] dictArray; void setup() { size(1400, 1000); /\*properly initializ…

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## [How to sort an Array ArrayList?](https://discourse.processing.org/t/how-to-sort-an-array-arraylist/26809)

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**Author:** [@CodeMasterX](https://discourse.processing.org/u/CodeMasterX)\
**Replies:** 8\
**Last updated:** [January 6, 2021, 6:45am UTC](https://discourse.processing.org/t/how-to-sort-an-array-arraylist/26809 "2021-01-06T06:45:32Z")

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Hi! I am working on a sorting algorithm but I am still having some trouble. I have an array list ArrayList\<ArrayList\<Float\>\> segs = new ArrayList\<ArrayList\<Float\>\>(); and I want to sort() (width the default function)…

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## [I cant play 2 videos idk why AND PLEASE STOP SAY DONT CALL SETUP :)](https://discourse.processing.org/t/i-cant-play-2-videos-idk-why-and-please-stop-say-dont-call-setup/26601)

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**Author:** [@clay21](https://discourse.processing.org/u/clay21)\
**Replies:** 6\
**Last updated:** [January 6, 2021, 3:47am UTC](https://discourse.processing.org/t/i-cant-play-2-videos-idk-why-and-please-stop-say-dont-call-setup/26601 "2021-01-06T03:47:32Z")

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import processing.video.\*; int puan=0; int timer; int page=0; boolean pressed=false; Movie mov,mov2; PImage foto1, foto2, foto3, foto4, foto5, foto6, foto7,foto8,foto9,foto10,foto11,bg; void setup() { size(860, 6…

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## [Galaga projectile motion](https://discourse.processing.org/t/galaga-projectile-motion/26757)

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**Author:** [@lionR](https://discourse.processing.org/u/lionR)\
**Replies:** 12\
**Last updated:** [January 5, 2021, 9:40pm UTC](https://discourse.processing.org/t/galaga-projectile-motion/26757 "2021-01-05T21:40:27Z")

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//Global Variables PImage player, enemy, rocket; int playerX; int rocketX; int rocketY; //Following variables from funprogramming.org float\[\] x = new float\[250\];// creates x values for 250 stars float\[\] y = new float…

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## [PLEASE DELETE THIS POST: Problems with constructor of Class](https://discourse.processing.org/t/please-delete-this-post-problems-with-constructor-of-class/26796)

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**Author:** [@Beto](https://discourse.processing.org/u/Beto)\
**Replies:** 4\
**Last updated:** [January 5, 2021, 5:05pm UTC](https://discourse.processing.org/t/please-delete-this-post-problems-with-constructor-of-class/26796 "2021-01-05T17:05:21Z")

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My code will be uploaded later in a new topic. If an admin comes across this topic, please delete.

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## [【Processing】Shooting Star 3](https://discourse.processing.org/t/processing-shooting-star-3/26710)

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**Author:** [@Rafael1004](https://discourse.processing.org/u/Rafael1004)\
**Replies:** 6\
**Last updated:** [January 5, 2021, 10:55am UTC](https://discourse.processing.org/t/processing-shooting-star-3/26710 "2021-01-05T10:55:53Z")

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Can someone help me and can explan me how to do something like this? Thanks :slight\_smile:

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## [Portable version of Processing](https://discourse.processing.org/t/portable-version-of-processing/26775)

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**Author:** [@Bird](https://discourse.processing.org/u/Bird)\
**Replies:** 2\
**Last updated:** [January 5, 2021, 2:22am UTC](https://discourse.processing.org/t/portable-version-of-processing/26775 "2021-01-05T02:22:00Z")

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I would like to find a way to make Processing portable. I understand that you can run it from a USB, but this do not make it portable. Currently, it will write preferences to AppData (on Windows) and it will create a Pro…

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## [Print to console not working?](https://discourse.processing.org/t/print-to-console-not-working/26772)

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**Author:** [@Kris1](https://discourse.processing.org/u/Kris1)\
**Replies:** 3\
**Last updated:** [January 4, 2021, 6:30pm UTC](https://discourse.processing.org/t/print-to-console-not-working/26772 "2021-01-04T18:30:54Z")

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Hi folks, I have a strange problem. The print to console does not seem to work on new sketches. I have printed to console many times, and it is not that I do not understand how to do it- it is that it does not work. I…

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## [Array of Images Error (loading of images)](https://discourse.processing.org/t/array-of-images-error-loading-of-images/26725)

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**Author:** [@ELaN](https://discourse.processing.org/u/ELaN)\
**Replies:** 23\
**Last updated:** [January 4, 2021, 4:28pm UTC](https://discourse.processing.org/t/array-of-images-error-loading-of-images/26725 "2021-01-04T16:28:36Z")

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Whenever I write this code: PImage\[\] flowers=new PImage\[3\]; Bubble\[\] bubbles=new Bubble\[5\]; void setup() { size(640, 360); for(int i=0; i\<flowers.length; i++){ flowers\[i\]=loadImage(“flower”+i+".jpg"); } for(int i…

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## [Azure Kinect library for processing](https://discourse.processing.org/t/azure-kinect-library-for-processing/15420)

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**Author:** [@tepat](https://discourse.processing.org/u/tepat)\
**Replies:** 5\
**Last updated:** [January 4, 2021, 3:49pm UTC](https://discourse.processing.org/t/azure-kinect-library-for-processing/15420 "2021-01-04T15:49:51Z")

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Is there anyone already try to use kinect azure with processing ? How do you think is the best way ? because there is still no a good library like the kinectPV2 to use with :slight\_smile: do you think it’s possible…

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## [I need your help please (image on/off)](https://discourse.processing.org/t/i-need-your-help-please-image-on-off/26755)

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**Author:** [@PIlw](https://discourse.processing.org/u/PIlw)\
**Replies:** 3\
**Last updated:** [January 4, 2021, 12:40pm UTC](https://discourse.processing.org/t/i-need-your-help-please-image-on-off/26755 "2021-01-04T12:40:21Z")

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Hello guys, I need help please, The thing would be, when I press a key an image appears and when I press it again it disappears. i’ve made it into my code and the image doesn’t shows up I put my code here and if someo…

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## [How convert the Traveling Salesperson JS to Object-oriented Programming style Java Processing](https://discourse.processing.org/t/how-convert-the-traveling-salesperson-js-to-object-oriented-programming-style-java-processing/26691)

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**Author:** [@psamead](https://discourse.processing.org/u/psamead)\
**Replies:** 9\
**Last updated:** [January 4, 2021, 11:47am UTC](https://discourse.processing.org/t/how-convert-the-traveling-salesperson-js-to-object-oriented-programming-style-java-processing/26691 "2021-01-04T11:47:56Z")

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please format code with \</\> button \* homework policy \* asking questions Dear friends, I am learning the Processing and trying to convert Daniel’s ‘Traveling Sales Person’ JavaScript to the Java Processing in the Obj…

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## [I need your help please (image on / off)](https://discourse.processing.org/t/i-need-your-help-please-image-on-off/26741)

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**Author:** [@PIlw](https://discourse.processing.org/u/PIlw)\
**Replies:** 3\
**Last updated:** [January 4, 2021, 11:41am UTC](https://discourse.processing.org/t/i-need-your-help-please-image-on-off/26741 "2021-01-04T11:41:05Z")

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Hello guys, I would like to do something but I don’t know how : The thing would be, when I press a key an image appears and when I press it again it disappears. I know that it must be something whit keyPressed, but i …

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## [Grayscaling a given image](https://discourse.processing.org/t/grayscaling-a-given-image/26768)

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**Author:** [@CodeMasterX](https://discourse.processing.org/u/CodeMasterX)\
**Replies:** 1\
**Last updated:** [January 4, 2021, 11:28am UTC](https://discourse.processing.org/t/grayscaling-a-given-image/26768 "2021-01-04T11:28:57Z")

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PImage org = loadImage("data/99484011-ead8-482a-a169-820c7981896f.jpg"), gray = org; void settings() { size(org.width\*2,org.height); gray.filter(GRAY); } void draw() { image(org,0,0); filter(GRAY); image(gray…

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## [Dynamic PVector arraylist drawing a smooth line](https://discourse.processing.org/t/dynamic-pvector-arraylist-drawing-a-smooth-line/26762)

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**Author:** [@dimpapadop](https://discourse.processing.org/u/dimpapadop)\
**Replies:** 5\
**Last updated:** [January 4, 2021, 9:56am UTC](https://discourse.processing.org/t/dynamic-pvector-arraylist-drawing-a-smooth-line/26762 "2021-01-04T09:56:01Z")

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Hallo. I have a sketch with 2 applets, the first is creating an Arraylist of Pvectors points for example when mouse Dragged adds points.add(new PVector(mouseX, mouseY));, and the second draws the line that passes the p…

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## [Darken the background of my animation with mouse](https://discourse.processing.org/t/darken-the-background-of-my-animation-with-mouse/26749)

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**Author:** [@elifworks](https://discourse.processing.org/u/elifworks)\
**Replies:** 6\
**Last updated:** [January 4, 2021, 9:30am UTC](https://discourse.processing.org/t/darken-the-background-of-my-animation-with-mouse/26749 "2021-01-04T09:30:08Z")

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Hello there At the end of this work, which interacts with sound and visual, I want to add one more thing: darkening the background color with mouse movement as I pinch the sound effect. How can I do that? PImage img; …

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## [Quick code question about Serial ports](https://discourse.processing.org/t/quick-code-question-about-serial-ports/26764)

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**Author:** [@jimlee](https://discourse.processing.org/u/jimlee)\
**Replies:** 2\
**Last updated:** [January 4, 2021, 8:55am UTC](https://discourse.processing.org/t/quick-code-question-about-serial-ports/26764 "2021-01-04T08:55:45Z")

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I have a GDropList that I populate with the serial ports on my machine so I can select one. Here’s the code to set up the list… // Method to setup the port listing popup selctor thing. public void setupPortList(GDropLis…

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## [Can someone create two loops out of this code?](https://discourse.processing.org/t/can-someone-create-two-loops-out-of-this-code/26760)

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**Author:** [@popin](https://discourse.processing.org/u/popin)\
**Replies:** 1\
**Last updated:** [January 4, 2021, 6:50am UTC](https://discourse.processing.org/t/can-someone-create-two-loops-out-of-this-code/26760 "2021-01-04T06:50:06Z")

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Hey guys, is it possible to create two loops out of this code? thank you! color\[\] colors = { #654321, #A0522D, #000000, #8B4513, #64190D, #00FF00 }; int circleX, circleY; int circle1X, circle1Y; int circle2X,…

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## [Processing Download Issue MacOS](https://discourse.processing.org/t/processing-download-issue-macos/26735)

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**Author:** [@kefournier1](https://discourse.processing.org/u/kefournier1)\
**Replies:** 2\
**Last updated:** [January 4, 2021, 2:22am UTC](https://discourse.processing.org/t/processing-download-issue-macos/26735 "2021-01-04T02:22:17Z")

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please format code with \</\> button \* homework policy \* asking questions Hi everyone - I am a high school teacher in the midst of some lesson planning that uses Processing and suddenly I am no longer able to open the …

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## [My sketch is smooth until i zoom in (drop to 15fps)](https://discourse.processing.org/t/my-sketch-is-smooth-until-i-zoom-in-drop-to-15fps/26714)

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**Author:** [@WillG](https://discourse.processing.org/u/WillG)\
**Replies:** 3\
**Last updated:** [January 3, 2021, 11:38pm UTC](https://discourse.processing.org/t/my-sketch-is-smooth-until-i-zoom-in-drop-to-15fps/26714 "2021-01-03T23:38:03Z")

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Hello there, for a school project, i’ve created a map with bus point and density at these bus point. Everything works fine except the frame rate when i zoom in with the slider. But i can’t remove it cause the teacher wa…

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## [Can someone comment this code?](https://discourse.processing.org/t/can-someone-comment-this-code/26716)

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**Author:** [@popin](https://discourse.processing.org/u/popin)\
**Replies:** 14\
**Last updated:** [January 3, 2021, 10:17pm UTC](https://discourse.processing.org/t/can-someone-comment-this-code/26716 "2021-01-03T22:17:22Z")

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Hey can you comment this code? i dont understand please void draw () { pushMatrix(); fill(0); translate(130, 40); //adjust position for (int k = 0; k \< myLetters.length; ++k) { for (int i = 0; i \< 4; i++) {//clarte…

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## [Draw code frame by frame](https://discourse.processing.org/t/draw-code-frame-by-frame/26687)

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**Author:** [@Sophie](https://discourse.processing.org/u/Sophie)\
**Replies:** 7\
**Last updated:** [January 3, 2021, 6:39pm UTC](https://discourse.processing.org/t/draw-code-frame-by-frame/26687 "2021-01-03T18:39:12Z")

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Hello, I am new to Processing and need help with a problem. I need the code in draw not to be played completely over and over again, but frame by frame. The background should change his color according to the first char…

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## [GUI builder will close because the GUI found was created with an earlier version, Help, I don't want to build again](https://discourse.processing.org/t/gui-builder-will-close-because-the-gui-found-was-created-with-an-earlier-version-help-i-dont-want-to-build-again/26711)

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**Author:** [@laptophead](https://discourse.processing.org/u/laptophead)\
**Replies:** 1\
**Last updated:** [January 3, 2021, 3:56pm UTC](https://discourse.processing.org/t/gui-builder-will-close-because-the-gui-found-was-created-with-an-earlier-version-help-i-dont-want-to-build-again/26711 "2021-01-03T15:56:33Z")

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Peter, I have this sketch that I didn’t touch in an year, and now it won’t let me edit. Please tell me I don’t have to make it again… over 20 buttons and data… Thanks Mitch I am running the 4.4.1 now. Don’t know …

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## [Geologic cross section with a rule](https://discourse.processing.org/t/geologic-cross-section-with-a-rule/26679)

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**Author:** [@Huno](https://discourse.processing.org/u/Huno)\
**Replies:** 1\
**Last updated:** [January 2, 2021, 11:24pm UTC](https://discourse.processing.org/t/geologic-cross-section-with-a-rule/26679 "2021-01-02T23:24:48Z")

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Hello! I’ve trying to make a geologic cross section for a while but I have not even had any idea on how to start. My goal is to do this 2d random graphic based on a simple rule. the idea is to: Draw a line Divide tha…

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## [Help me. Please. (Image and color)](https://discourse.processing.org/t/help-me-please-image-and-color/26674)

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**Author:** [@salvofx](https://discourse.processing.org/u/salvofx)\
**Replies:** 4\
**Last updated:** [January 2, 2021, 10:23pm UTC](https://discourse.processing.org/t/help-me-please-image-and-color/26674 "2021-01-02T22:23:26Z")

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Hello everyone, I am a newbie in Processing! I have to submit a project very soon for the final exam at university but i don’t know how i can do this. Could someone help me? Taking any image, I should be able to creat…

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## [Help with mousePressed or keyPressed](https://discourse.processing.org/t/help-with-mousepressed-or-keypressed/26689)

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**Author:** [@PIlw](https://discourse.processing.org/u/PIlw)\
**Replies:** 3\
**Last updated:** [January 2, 2021, 4:43pm UTC](https://discourse.processing.org/t/help-with-mousepressed-or-keypressed/26689 "2021-01-02T16:43:34Z")

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Hello guys, I need help to make this code into mouse pressed or keypressed so I want that the code appears only if I press the mouse or a key as you want but if someone could help me it would be amazing ! class bug { …

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## [Combine 2 codes](https://discourse.processing.org/t/combine-2-codes/26671)

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**Author:** [@PIlw](https://discourse.processing.org/u/PIlw)\
**Replies:** 4\
**Last updated:** [January 2, 2021, 3:34pm UTC](https://discourse.processing.org/t/combine-2-codes/26671 "2021-01-02T15:34:35Z")

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Hello guys, I’ve a question : The thing is that I have 2 codes and I want to combine them like this ; the basic code would be the image of DVD mooving across the screen and then put a mousePressed line so when we press …

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## [How to access variables from PApplet (2nd window) in default window?](https://discourse.processing.org/t/how-to-access-variables-from-papplet-2nd-window-in-default-window/26670)

<div class="topic-metadata">

**Author:** [@CodeMasterX](https://discourse.processing.org/u/CodeMasterX)\
**Replies:** 2\
**Last updated:** [January 2, 2021, 10:44am UTC](https://discourse.processing.org/t/how-to-access-variables-from-papplet-2nd-window-in-default-window/26670 "2021-01-02T10:44:21Z")

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Hi! I recently saw someone’s code which allowed for 2 windows. I tried to adapt one of my programs to it but it didn’t work too well. I know I can just declare them at the beginning and be done with it, but is there a w…

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