# Latest

**URL:** https://discourse.processing.org/latest.md?page=264

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

**Page:** 265

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## [Some problems with 2d array](https://discourse.processing.org/t/some-problems-with-2d-array/27109)

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**Author:** [@deiwy](https://discourse.processing.org/u/deiwy)\
**Replies:** 4\
**Last updated:** [January 16, 2021, 2:01pm UTC](https://discourse.processing.org/t/some-problems-with-2d-array/27109 "2021-01-16T14:01:08Z")

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i create 2d array of map, to create a platformer game, and map is not render correctly platform pl; FloatList plx, ply; int\[\]\[\] map = { {0, 1, 1, 0}, {0, 0, 0, 1}, {0, 1, 1, 0}, {0, 0, 0, 1} }; void setup(…

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## [Change Image object size with mouse](https://discourse.processing.org/t/change-image-object-size-with-mouse/27077)

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**Author:** [@Elmpt](https://discourse.processing.org/u/Elmpt)\
**Replies:** 3\
**Last updated:** [January 16, 2021, 1:42pm UTC](https://discourse.processing.org/t/change-image-object-size-with-mouse/27077 "2021-01-16T13:42:55Z")

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Hi! I’m here again with the question. I have an image object that I would like to display firstly small, but I want that when the user clicks and holds mouse pressed on the image and than starts to move mouse, the image…

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## [Fast image cropping in Processing](https://discourse.processing.org/t/fast-image-cropping-in-processing/27091)

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**Author:** [@r.jaoui](https://discourse.processing.org/u/r.jaoui)\
**Replies:** 6\
**Last updated:** [January 16, 2021, 12:34pm UTC](https://discourse.processing.org/t/fast-image-cropping-in-processing/27091 "2021-01-16T12:34:09Z")

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Hello ! I am currently working on a project that is quite large and I would like to optimize parts of it as soon as possible. In the course of this project, I need to crop some quite large images (around 2K) to a size …

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## [Limit window maximum size](https://discourse.processing.org/t/limit-window-maximum-size/27076)

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**Author:** [@mgood7123](https://discourse.processing.org/u/mgood7123)\
**Replies:** 5\
**Last updated:** [January 16, 2021, 11:24am UTC](https://discourse.processing.org/t/limit-window-maximum-size/27076 "2021-01-16T11:24:21Z")

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is there a way to set a maximum window size? in particular I am trying to prevent content overflow by limiting the maximum window size void setup() { // initial window size size(640, 360, P2D); // allow window t…

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## [Image resetting after moving](https://discourse.processing.org/t/image-resetting-after-moving/27097)

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**Author:** [@lancelot](https://discourse.processing.org/u/lancelot)\
**Replies:** 2\
**Last updated:** [January 16, 2021, 8:54am UTC](https://discourse.processing.org/t/image-resetting-after-moving/27097 "2021-01-16T08:54:13Z")

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Hi everyone, I’ve been creating a map with a 2d array, and now i’m trying to get it to move (since the map is bigger than the screen), but I’m having some trouble with getting the field to stay where it is. The idea beh…

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## [Make trail move in Z direction](https://discourse.processing.org/t/make-trail-move-in-z-direction/27037)

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**Author:** [@noobcoder](https://discourse.processing.org/u/noobcoder)\
**Replies:** 12\
**Last updated:** [January 16, 2021, 8:10am UTC](https://discourse.processing.org/t/make-trail-move-in-z-direction/27037 "2021-01-16T08:10:04Z")

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I am trying to set up an interaction between AntD and the trail it leaves behind. I want the trail to move up in the Z direction every time the AntD come within a certain distance of the trail. Right now i have just adde…

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## [How to run concurrent sketches](https://discourse.processing.org/t/how-to-run-concurrent-sketches/26816)

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**Author:** [@Cooper.Davies](https://discourse.processing.org/u/Cooper.Davies)\
**Replies:** 2\
**Last updated:** [January 16, 2021, 6:45am UTC](https://discourse.processing.org/t/how-to-run-concurrent-sketches/26816 "2021-01-16T06:45:36Z")

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The question I have regarding processing is how would I go about managing multiple rendering frames concurrently. For more context, what I am trying to create is a genetic algorithm to play a game which I will create usi…

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## [Sketches named "final" do not run](https://discourse.processing.org/t/sketches-named-final-do-not-run/27100)

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**Author:** [@CodeMasterX](https://discourse.processing.org/u/CodeMasterX)\
**Replies:** 1\
**Last updated:** [January 15, 2021, 7:30pm UTC](https://discourse.processing.org/t/sketches-named-final-do-not-run/27100 "2021-01-15T19:30:09Z")

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I know it is because of PApplet name (from what I heard processing sketch is just a PApplet running in java) when I copied the code on a blank sketch it worked. You don’t need to reply but keep that in mind if you ha…

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## [\[issue\] Hi can't find the problem in my code . I am new thanks](https://discourse.processing.org/t/issue-hi-cant-find-the-problem-in-my-code-i-am-new-thanks/27099)

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**Author:** [@brono](https://discourse.processing.org/u/brono)\
**Replies:** 1\
**Last updated:** [January 15, 2021, 6:13pm UTC](https://discourse.processing.org/t/issue-hi-cant-find-the-problem-in-my-code-i-am-new-thanks/27099 "2021-01-15T18:13:44Z")

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I was following The coding train video 7.4. link:: \> https://www.youtube.com/watch?v=fBqaA7zRO58&list=PLRqwX-V7Uu6Zy51Q-x9tMWIv9cueOFTFA&index=29&ab\_channel=TheCodingTrain and I can’t find the problem I am facing. it…

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## [p5js in wordpress ](https://discourse.processing.org/t/p5js-in-wordpress/27093)

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**Author:** [@sapperlot](https://discourse.processing.org/u/sapperlot)\
**Replies:** 0\
**Last updated:** [January 15, 2021, 2:52pm UTC](https://discourse.processing.org/t/p5js-in-wordpress/27093 "2021-01-15T14:52:13Z")

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## [Help with adding library function](https://discourse.processing.org/t/help-with-adding-library-function/26971)

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**Author:** [@Ell123](https://discourse.processing.org/u/Ell123)\
**Replies:** 3\
**Last updated:** [January 15, 2021, 2:33pm UTC](https://discourse.processing.org/t/help-with-adding-library-function/26971 "2021-01-15T14:33:34Z")

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Whenver I try to add a library it says I need to verify my internet and that there is no internet or something, I don’t know why it says it when I am connected to my wifi, please help, I just installed processor also and…

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## [Ball to ball collision](https://discourse.processing.org/t/ball-to-ball-collision/27050)

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**Author:** [@WasNeverHere](https://discourse.processing.org/u/WasNeverHere)\
**Replies:** 1\
**Last updated:** [January 15, 2021, 1:20pm UTC](https://discourse.processing.org/t/ball-to-ball-collision/27050 "2021-01-15T13:20:16Z")

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I am trying to make it so that the circle that is moving (circleX) isn’t hit by the circles that are obstacles (circleD). I’ve tried a lot of different things and can’t find what’s wrong. float xspeed = 2.5; float x,y; …

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## [Line Graph - ArrayIndexOutOfBoundsException: 570](https://discourse.processing.org/t/line-graph-arrayindexoutofboundsexception-570/27085)

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**Author:** [@JennyMcCreadie](https://discourse.processing.org/u/JennyMcCreadie)\
**Replies:** 4\
**Last updated:** [January 15, 2021, 12:20pm UTC](https://discourse.processing.org/t/line-graph-arrayindexoutofboundsexception-570/27085 "2021-01-15T12:20:17Z")

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Hello, I’m following a tutorial on making a dynamic linegraph whilst using my own data. I’ve come across an error which I’m unable to fix myself and would really appreciate some fresh eyes on this :slight\_smile: I know …

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## [Virtual display: Extremely urgent](https://discourse.processing.org/t/virtual-display-extremely-urgent/27082)

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**Author:** [@AbroChief](https://discourse.processing.org/u/AbroChief)\
**Replies:** 1\
**Last updated:** [January 15, 2021, 11:58am UTC](https://discourse.processing.org/t/virtual-display-extremely-urgent/27082 "2021-01-15T11:58:28Z")

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Hello discourse forum. This is Abhigyan from Assam, India. I’m just a beginner (know nothing) regarding Processing. It’s a very important and urgent urge from me that please anybody help me regarding my problem. I act…

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## [Bug with processing. After running a program for about 5 hours](https://discourse.processing.org/t/bug-with-processing-after-running-a-program-for-about-5-hours/26975)

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**Author:** [@CodeMasterX](https://discourse.processing.org/u/CodeMasterX)\
**Replies:** 3\
**Last updated:** [January 15, 2021, 11:50am UTC](https://discourse.processing.org/t/bug-with-processing-after-running-a-program-for-about-5-hours/26975 "2021-01-15T11:50:45Z")

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After I run the program for about 5 hours this happen; It is just a minor bug but yea : P, the total number of points probably exceeded the limits and so it started lagging. ArrayList\<PVector\> pos = new ArrayList\<PVe…

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## [Looking for a Processing tutor](https://discourse.processing.org/t/looking-for-a-processing-tutor/27075)

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**Author:** [@Idileyayan](https://discourse.processing.org/u/Idileyayan)\
**Replies:** 2\
**Last updated:** [January 15, 2021, 10:06am UTC](https://discourse.processing.org/t/looking-for-a-processing-tutor/27075 "2021-01-15T10:06:14Z")

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please format code with \</\> button \* homework policy \* asking questions Hi! I am looking for a tutor. Regards, Idil

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## [PGraphics - read pixels as they are drawn](https://discourse.processing.org/t/pgraphics-read-pixels-as-they-are-drawn/21837)

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**Author:** [@mgood7123](https://discourse.processing.org/u/mgood7123)\
**Replies:** 21\
**Last updated:** [January 15, 2021, 6:28am UTC](https://discourse.processing.org/t/pgraphics-read-pixels-as-they-are-drawn/21837 "2021-01-15T06:28:10Z")

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with the PGraphics class, is there a way to read pixles as they get drawn? for example PGraphics c; void settings() { size(100, 100, P3D); } void setup() { c = createGraphics(100,100, P3D); c.beginDraw();…

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## [Generalisation of function](https://discourse.processing.org/t/generalisation-of-function/27061)

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**Author:** [@Rafsing](https://discourse.processing.org/u/Rafsing)\
**Replies:** 6\
**Last updated:** [January 15, 2021, 12:25am UTC](https://discourse.processing.org/t/generalisation-of-function/27061 "2021-01-15T00:25:54Z")

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How can I generalize pendulumManagement() to take as arguments the names of the functions to fire and the boolean to decide on? void pendulumManagement() { if (pendul) { singlePendulumManagement(); } else { …

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## [Native camera android in processing android](https://discourse.processing.org/t/native-camera-android-in-processing-android/26858)

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**Author:** [@dimpapadop](https://discourse.processing.org/u/dimpapadop)\
**Replies:** 31\
**Last updated:** [January 14, 2021, 8:18pm UTC](https://discourse.processing.org/t/native-camera-android-in-processing-android/26858 "2021-01-14T20:18:13Z")

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hallo. I am trying to get the camera working in prcessing android. Using ketai, i get only 7fps no matter the size for example even in 160X120 capture i get 6-7fps How can i use the native android camera api within pr…

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## [A Processing.py / Python Mode cheat sheet for beginners](https://discourse.processing.org/t/a-processing-py-python-mode-cheat-sheet-for-beginners/27053)

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**Author:** [@tabreturn](https://discourse.processing.org/u/tabreturn)\
**Replies:** 1\
**Last updated:** [January 14, 2021, 6:57pm UTC](https://discourse.processing.org/t/a-processing-py-python-mode-cheat-sheet-for-beginners/27053 "2021-01-14T18:57:03Z")

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I put together a Processing.py / Python Mode cheat sheet for beginners. If that sounds useful, you can grab it here: https://github.com/tabreturn/processing.py-cheat-sheet I figured a simple 2-pager works best (a single…

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## [\*URGENT\* Assistance with Drawing Program](https://discourse.processing.org/t/urgent-assistance-with-drawing-program/27046)

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**Author:** [@Prxt.3k](https://discourse.processing.org/u/Prxt.3k)\
**Replies:** 11\
**Last updated:** [January 14, 2021, 6:45pm UTC](https://discourse.processing.org/t/urgent-assistance-with-drawing-program/27046 "2021-01-14T18:45:20Z")

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I am creating a drawing program similar to paint for a school assignment, but I would like to know if someone has the code for the shape selector box similar to Microsoft paint because I would like to elevate my project.…

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## [How do I import Pexels API library in Processing?](https://discourse.processing.org/t/how-do-i-import-pexels-api-library-in-processing/27004)

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**Author:** [@eclipse](https://discourse.processing.org/u/eclipse)\
**Replies:** 1\
**Last updated:** [January 14, 2021, 6:26pm UTC](https://discourse.processing.org/t/how-do-i-import-pexels-api-library-in-processing/27004 "2021-01-14T18:26:25Z")

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Hello, I am attempting to use an API for the first time but am having some trouble. Here is the API that I have chosen: Pexels API Documentation. I have already received an API key and tried to adapt the following Java…

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## [Creating a list of random colors that does not update](https://discourse.processing.org/t/creating-a-list-of-random-colors-that-does-not-update/27041)

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**Author:** [@jackeddielove](https://discourse.processing.org/u/jackeddielove)\
**Replies:** 7\
**Last updated:** [January 14, 2021, 3:56pm UTC](https://discourse.processing.org/t/creating-a-list-of-random-colors-that-does-not-update/27041 "2021-01-14T15:56:12Z")

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I would like to create an array of 100 randomly chosen colors that I can pick from throughout my “draw” code. If I use color\[\] colors = new color\[100\]; for (int i = 0; i\<100; i++) { colors\[i\]= color(random(255), rand…

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## [Finding the edges in an Image error](https://discourse.processing.org/t/finding-the-edges-in-an-image-error/27055)

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**Author:** [@ELaN](https://discourse.processing.org/u/ELaN)\
**Replies:** 11\
**Last updated:** [January 14, 2021, 2:18pm UTC](https://discourse.processing.org/t/finding-the-edges-in-an-image-error/27055 "2021-01-14T14:18:49Z")

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I’ve written this code to find the edges in my image which I have named properly in the correct file: \<PImage frog; void setup(){ size(1200,720); frog=loadImage(“frog.jpg”); } void draw(){ loadPixels(); frog.load…

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## [Different behaviour between Processing and Arduino Serial Monitor](https://discourse.processing.org/t/different-behaviour-between-processing-and-arduino-serial-monitor/26973)

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**Author:** [@kodibeni](https://discourse.processing.org/u/kodibeni)\
**Replies:** 6\
**Last updated:** [January 14, 2021, 11:32am UTC](https://discourse.processing.org/t/different-behaviour-between-processing-and-arduino-serial-monitor/26973 "2021-01-14T11:32:05Z")

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Dear all, I have just started experiencing with Processing, and ran into the following problem. I am trying to blink the built-in LED on an Arduino board (Mega2560), and am experiencing different behavior between the P…

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## [How can I fix my Timer Bug?](https://discourse.processing.org/t/how-can-i-fix-my-timer-bug/27044)

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**Author:** [@Radioaktiv](https://discourse.processing.org/u/Radioaktiv)\
**Replies:** 2\
**Last updated:** [January 14, 2021, 9:50am UTC](https://discourse.processing.org/t/how-can-i-fix-my-timer-bug/27044 "2021-01-14T09:50:16Z")

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the first second the timer does not work. is there any way to fix it? also is there a way to make it mor compact? String milliseconds; int second; int timer; int index; void setup() { size(500, 500); } void draw() {…

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## [Stuck with replicating the mouseover function](https://discourse.processing.org/t/stuck-with-replicating-the-mouseover-function/27039)

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**Author:** [@georg2a](https://discourse.processing.org/u/georg2a)\
**Replies:** 4\
**Last updated:** [January 14, 2021, 8:53am UTC](https://discourse.processing.org/t/stuck-with-replicating-the-mouseover-function/27039 "2021-01-14T08:53:49Z")

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hello, i’m having some trouble constricting the box space that triggers a change in visuals. i’ve drawn an outline of the area i want the visuals/mouse to change within. as the cursor moves out of this box, it should ret…

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## [Could you please help with java.lang.NullPointerException](https://discourse.processing.org/t/could-you-please-help-with-java-lang-nullpointerexception/26666)

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**Author:** [@digimages\_111](https://discourse.processing.org/u/digimages_111)\
**Replies:** 9\
**Last updated:** [January 14, 2021, 5:57am UTC](https://discourse.processing.org/t/could-you-please-help-with-java-lang-nullpointerexception/26666 "2021-01-14T05:57:13Z")

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I downloaded but never successful to starting app; Please see the image, what was the reason, and how to fix? Thanks.

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## [Draw angle curve between two vectors](https://discourse.processing.org/t/draw-angle-curve-between-two-vectors/27033)

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**Author:** [@sarath.jasrin](https://discourse.processing.org/u/sarath.jasrin)\
**Replies:** 1\
**Last updated:** [January 13, 2021, 10:49pm UTC](https://discourse.processing.org/t/draw-angle-curve-between-two-vectors/27033 "2021-01-13T22:49:45Z")

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How to draw angle curve between two vectors like below pictures in p5js My current drawing looks like below Here is the example sketch: https://editor.p5js.org/sarathjasrin/sketches/EVFh7Ni3n Thanks in advance

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## [Fill() doesn't accept pattern](https://discourse.processing.org/t/fill-doesnt-accept-pattern/27035)

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**Author:** [@j0b](https://discourse.processing.org/u/j0b)\
**Replies:** 1\
**Last updated:** [January 13, 2021, 10:45pm UTC](https://discourse.processing.org/t/fill-doesnt-accept-pattern/27035 "2021-01-13T22:45:18Z")

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i am used to js canvas which accept any pattern (or image) as fillStyle() or strokeStyle(). p5js fill() apparently only works with colors. curious if there is any workaround?

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