# Processing

**URL:** https://discourse.processing.org/c/processing/6.md?page=349

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

**Page:** 350

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## [Can't acces class variables in function](https://discourse.processing.org/t/cant-acces-class-variables-in-function/5403)

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**Author:** [@benja8151](https://discourse.processing.org/u/benja8151)\
**Replies:** 2\
**Last updated:** [November 10, 2018, 2:21pm UTC](https://discourse.processing.org/t/cant-acces-class-variables-in-function/5403 "2018-11-10T14:21:49Z")

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Hello, before I start, I must say I’m pretty much a total newbie when it comes to programming in Processing, or in Java in general. As you can see, I have two shape classes, rectangle and circle. I’m trying to implement…

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## [Thread hangs when no delay is used](https://discourse.processing.org/t/thread-hangs-when-no-delay-is-used/5352)

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**Author:** [@clankill3r](https://discourse.processing.org/u/clankill3r)\
**Replies:** 11\
**Last updated:** [November 10, 2018, 11:07am UTC](https://discourse.processing.org/t/thread-hangs-when-no-delay-is-used/5352 "2018-11-10T11:07:45Z")

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When I remove delay(1) in the code below then last\_frame will always be equal to frameCount and there is no movement. Why is that? PVector v = new PVector(); void setup() { thread("whyOwhy"); } void whyOwhy() { …

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## [Counting things in draw()](https://discourse.processing.org/t/counting-things-in-draw/5396)

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**Author:** [@germaine](https://discourse.processing.org/u/germaine)\
**Replies:** 1\
**Last updated:** [November 10, 2018, 8:45am UTC](https://discourse.processing.org/t/counting-things-in-draw/5396 "2018-11-10T08:45:57Z")

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I have “liquid” (a rectangle) into which I am dropping “objects” (ellipses) of a regular size. When an object passes into the water, I want to add to the height of the water rectangle, and when I take an object out, I wa…

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## [How to tell if the mouse is over the window?](https://discourse.processing.org/t/how-to-tell-if-the-mouse-is-over-the-window/5285)

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**Author:** [@Angle](https://discourse.processing.org/u/Angle)\
**Replies:** 8\
**Last updated:** [November 10, 2018, 8:33am UTC](https://discourse.processing.org/t/how-to-tell-if-the-mouse-is-over-the-window/5285 "2018-11-10T08:33:48Z")

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I looked through the reference and I don’t see anything for that. Do I just need to use mouseEnter() and mouseLeave() events? :confused:

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## [Instanced objects in multiple Arraylists for object organization?](https://discourse.processing.org/t/instanced-objects-in-multiple-arraylists-for-object-organization/5364)

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**Author:** [@Birb](https://discourse.processing.org/u/Birb)\
**Replies:** 2\
**Last updated:** [November 10, 2018, 2:39am UTC](https://discourse.processing.org/t/instanced-objects-in-multiple-arraylists-for-object-organization/5364 "2018-11-10T02:39:35Z")

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I have a problem and I’m trying to figure out the best way to approach it. I have a list of objects in an array, order matters. I would like to create sub-groups of those objects. Ideally, this would just be a matter of …

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## [PixelFlow does not work](https://discourse.processing.org/t/pixelflow-does-not-work/5365)

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**Author:** [@HackinHarry](https://discourse.processing.org/u/HackinHarry)\
**Replies:** 6\
**Last updated:** [November 10, 2018, 1:32am UTC](https://discourse.processing.org/t/pixelflow-does-not-work/5365 "2018-11-10T01:32:20Z")

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It used to work before I reinstalled windows10 and updated Java about 2 months ago. When it did work, I was able to run the Wind Tunnel examples. I’m not sure if I ever tried it in Processing 2.2.1, but it does not wor…

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## [Load several XML to analyse them](https://discourse.processing.org/t/load-several-xml-to-analyse-them/5058)

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**Author:** [@Pr0tonX](https://discourse.processing.org/u/Pr0tonX)\
**Replies:** 6\
**Last updated:** [November 9, 2018, 11:50pm UTC](https://discourse.processing.org/t/load-several-xml-to-analyse-them/5058 "2018-11-09T23:50:00Z")

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Hi everyone, I’m trying to visualize some journeys wich are encoded in XML files. These files give me the position (lattitude and longitude), the date/time, and some others informations that I don’t need. I write a pr…

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## [Fill in a nested loop](https://discourse.processing.org/t/fill-in-a-nested-loop/5394)

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**Author:** [@Fei](https://discourse.processing.org/u/Fei)\
**Replies:** 4\
**Last updated:** [November 9, 2018, 11:29pm UTC](https://discourse.processing.org/t/fill-in-a-nested-loop/5394 "2018-11-09T23:29:58Z")

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Hello, So I’m a little confused on how to manage what I’m trying to fill, and how, inside nested loops. I’m trying to have 3 rows of 20 circles each (to represent 60 seconds), where 1 circle is filled black every secon…

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## [Exporting Errors \[Kinda new in Processing\]](https://discourse.processing.org/t/exporting-errors-kinda-new-in-processing/5388)

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**Author:** [@GeorgeKal](https://discourse.processing.org/u/GeorgeKal)\
**Replies:** 1\
**Last updated:** [November 9, 2018, 8:37pm UTC](https://discourse.processing.org/t/exporting-errors-kinda-new-in-processing/5388 "2018-11-09T20:37:53Z")

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Compiling resources C:\\Users\\Γιώργος\\Documents\\processing-3.4\\modes\\java\\application\\launch4j\\bin\\windres.exe: can't open icon file \`C:\\Users\\???????\\Documents\\processing-3.4\\modes\\java\\application\\sketch.ico': Invalid a…

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## [Happiness Meter](https://discourse.processing.org/t/happiness-meter/5326)

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**Author:** [@ant](https://discourse.processing.org/u/ant)\
**Replies:** 15\
**Last updated:** [November 9, 2018, 8:06pm UTC](https://discourse.processing.org/t/happiness-meter/5326 "2018-11-09T20:06:07Z")

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I am having trouble making a happiness meter. So I want to be able to have a timer aka my meter start counting down when I press the s key. Then if the happiness meter gets to low the rock image will change and if it get…

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## [Error with semicolon translate in point](https://discourse.processing.org/t/error-with-semicolon-translate-in-point/5371)

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**Author:** [@Paco](https://discourse.processing.org/u/Paco)\
**Replies:** 12\
**Last updated:** [November 9, 2018, 7:40pm UTC](https://discourse.processing.org/t/error-with-semicolon-translate-in-point/5371 "2018-11-09T19:40:17Z")

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Hi everyone, I have a big problem with my Processing, when I tap a semicolon on my mac it appear a point in my code and same problem with double point it appear only a point. I already checked on other software to see i…

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## [How to type OR on keyboard (mac)](https://discourse.processing.org/t/how-to-type-or-on-keyboard-mac/5369)

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**Author:** [@anna\_mei](https://discourse.processing.org/u/anna_mei)\
**Replies:** 8\
**Last updated:** [November 9, 2018, 9:29am UTC](https://discourse.processing.org/t/how-to-type-or-on-keyboard-mac/5369 "2018-11-09T09:29:04Z")

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Dear community, I am trying to find the keyboard “shortcut” for this sign (which I now copied from the references page): || It is the sign for “OR”. I am currently using a Mac (High Sierra 10.13.4) with a german keybo…

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## [Pixels buffer and framerate](https://discourse.processing.org/t/pixels-buffer-and-framerate/5345)

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**Author:** [@TTG](https://discourse.processing.org/u/TTG)\
**Replies:** 11\
**Last updated:** [November 9, 2018, 8:40am UTC](https://discourse.processing.org/t/pixels-buffer-and-framerate/5345 "2018-11-09T08:40:42Z")

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Dear Team, When using pixels array i experience framerate drop (20 fps) after 4 or 5 draw() loops. when i use a void keypressed() the framerate doesnt drop and stays above 55 fps. (of course i require to press a ke…

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## [Create multiple drawing object instances](https://discourse.processing.org/t/create-multiple-drawing-object-instances/5289)

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**Author:** [@martinh](https://discourse.processing.org/u/martinh)\
**Replies:** 9\
**Last updated:** [November 9, 2018, 8:33am UTC](https://discourse.processing.org/t/create-multiple-drawing-object-instances/5289 "2018-11-09T08:33:01Z")

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Hi all, new here. I would like to use P3 to create multiple unique drawing areas. All the examples I’ve seen the window is one large drawing area. Ideally I’d like to create a class of the ‘drawingArea’ with all the c…

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## [Creating Art with Processing or P5](https://discourse.processing.org/t/creating-art-with-processing-or-p5/5359)

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**Author:** [@GuerillaGirl](https://discourse.processing.org/u/GuerillaGirl)\
**Replies:** 4\
**Last updated:** [November 9, 2018, 8:26am UTC](https://discourse.processing.org/t/creating-art-with-processing-or-p5/5359 "2018-11-09T08:26:14Z")

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Hi guys, My son is doing a graphic art project using Processing/P5 and in two weeks he will be submitting his work to the Fine Arts contest in our state. I was wondering if you guys had any advice on creating art using …

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## [Easter egg, maybe](https://discourse.processing.org/t/easter-egg-maybe/5351)

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**Author:** [@nitrochloric](https://discourse.processing.org/u/nitrochloric)\
**Replies:** 4\
**Last updated:** [November 9, 2018, 8:07am UTC](https://discourse.processing.org/t/easter-egg-maybe/5351 "2018-11-09T08:07:23Z")

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hi i was going around the processing-3.4 files and i found two e-books , frankenstein and dracula in the folder …\\Desktop\\processing-3.4\\modes\\java\\examples\\Topics\\Advanced Data\\HashMapClass\\data is this a well known t…

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## [Kinect v2 was working but installed zadig drivers and now won't run on any program](https://discourse.processing.org/t/kinect-v2-was-working-but-installed-zadig-drivers-and-now-wont-run-on-any-program/5749)

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**Author:** [@moonspacedancer](https://discourse.processing.org/u/moonspacedancer)\
**Replies:** 0\
**Last updated:** [November 9, 2018, 8:00am UTC](https://discourse.processing.org/t/kinect-v2-was-working-but-installed-zadig-drivers-and-now-wont-run-on-any-program/5749 "2018-11-09T08:00:00Z")

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I wanted to run a sketch I had for a v1 using openkinect library but it didnt work and everyone said install the driver on zadig. I did that and it still did not work, but gave no error. so I was like, hey I will just gi…

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## [Mesh ball generation](https://discourse.processing.org/t/mesh-ball-generation/4980)

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**Author:** [@Darkar25](https://discourse.processing.org/u/Darkar25)\
**Replies:** 9\
**Last updated:** [November 9, 2018, 4:09am UTC](https://discourse.processing.org/t/mesh-ball-generation/4980 "2018-11-09T04:09:55Z")

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Im trying to make something like that: I already made dots generation and border circle…but i dont know how to connect all dots between…i need to connect every dot to closest dots…i tried that myself but i got an OutO…

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## [Path finder java pathfinder library processing](https://discourse.processing.org/t/path-finder-java-pathfinder-library-processing/2947)

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**Author:** [@ctrembla](https://discourse.processing.org/u/ctrembla)\
**Replies:** 8\
**Last updated:** [November 8, 2018, 11:28pm UTC](https://discourse.processing.org/t/path-finder-java-pathfinder-library-processing/2947 "2018-11-08T23:28:59Z")

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OK, so I’ve got where I the path goes from point a to b but idk how to make it avoid objects. I want to make a tower defense game where different maps appear & the enemy gotta find its way through or to the item it wants…

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## [Shooting in a game](https://discourse.processing.org/t/shooting-in-a-game/5328)

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**Author:** [@kinglucas](https://discourse.processing.org/u/kinglucas)\
**Replies:** 4\
**Last updated:** [November 8, 2018, 10:27pm UTC](https://discourse.processing.org/t/shooting-in-a-game/5328 "2018-11-08T22:27:05Z")

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Hello, I am a beginner to programming and I really want this shooting code in my game but I don’t know how to put this code so that my character in my game shoots these bullets please help: //Objects Player player = new…

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## [G4P can´t continue with saved work](https://discourse.processing.org/t/g4p-can-t-continue-with-saved-work/5267)

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**Author:** [@Tomas](https://discourse.processing.org/u/Tomas)\
**Replies:** 16\
**Last updated:** [November 8, 2018, 6:12pm UTC](https://discourse.processing.org/t/g4p-can-t-continue-with-saved-work/5267 "2018-11-08T18:12:32Z")

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Hello, I created a GUI with G4P tool, I saved it and after I opened it again I had the code in the GUI tab, but when I opened the G4P tool it overwrited the GUI tab to the default/blank template. How can I run the tool w…

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## [Best way to do this: tint(C, M, Y, K)?](https://discourse.processing.org/t/best-way-to-do-this-tint-c-m-y-k/5317)

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**Author:** [@SheCurvesMobius](https://discourse.processing.org/u/SheCurvesMobius)\
**Replies:** 10\
**Last updated:** [November 8, 2018, 2:13pm UTC](https://discourse.processing.org/t/best-way-to-do-this-tint-c-m-y-k/5317 "2018-11-08T14:13:14Z")

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Hello, I would like to be able to manipulate the CMYK channels of an image in Processing. (I realize that on a monitor the colors of an image are generated by RGB light, but I want to mimic the effects of the printing p…

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## [Audio (amplitude) analysis](https://discourse.processing.org/t/audio-amplitude-analysis/5320)

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**Author:** [@IdoPlumes](https://discourse.processing.org/u/IdoPlumes)\
**Replies:** 2\
**Last updated:** [November 8, 2018, 11:14am UTC](https://discourse.processing.org/t/audio-amplitude-analysis/5320 "2018-11-08T11:14:21Z")

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Hi everyone :slight\_smile: So i am currently at the stage of having audio load and play when i run the code in my sketch, although i would like to then use the amplitude data to manipulate the graphics. However all the…

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## [A run away behavior](https://discourse.processing.org/t/a-run-away-behavior/5253)

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**Author:** [@vincentstrebelle](https://discourse.processing.org/u/vincentstrebelle)\
**Replies:** 19\
**Last updated:** [November 8, 2018, 10:25am UTC](https://discourse.processing.org/t/a-run-away-behavior/5253 "2018-11-08T10:25:15Z")

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hi everyone, i trie to make an run away behavior for my creature in my ecosystem. the situation is, if a predator (my mouse for now) come too close of a creature, the creature move away. i was wondering if i can use my…

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## [If you are using the g4p button, can not change the cursor?](https://discourse.processing.org/t/if-you-are-using-the-g4p-button-can-not-change-the-cursor/5080)

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**Author:** [@seo](https://discourse.processing.org/u/seo)\
**Replies:** 3\
**Last updated:** [November 8, 2018, 4:15am UTC](https://discourse.processing.org/t/if-you-are-using-the-g4p-button-can-not-change-the-cursor/5080 "2018-11-08T04:15:43Z")

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If you are using the g4p button, can not change the cursor? noCursor, coursor (HAND) … etc

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## [How to use processing?](https://discourse.processing.org/t/how-to-use-processing/5340)

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**Author:** [@Null](https://discourse.processing.org/u/Null)\
**Replies:** 1\
**Last updated:** [November 8, 2018, 3:50am UTC](https://discourse.processing.org/t/how-to-use-processing/5340 "2018-11-08T03:50:01Z")

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So i made a program for my friends to use and other people, but i found out that you need processing to use the program. But is there a way that i could make it so they dont need to download processing to use the program…

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## [textFont/text bugs of Processing 3.4](https://discourse.processing.org/t/textfont-text-bugs-of-processing-3-4/5122)

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**Author:** [@zizhenc](https://discourse.processing.org/u/zizhenc)\
**Replies:** 4\
**Last updated:** [November 7, 2018, 10:13pm UTC](https://discourse.processing.org/t/textfont-text-bugs-of-processing-3-4/5122 "2018-11-07T22:13:24Z")

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I believe I found a bug in Processing 3.4. The textFont will mess transparency in P3D render mode. I tested the following code in former Processing versions 3.37 and before, all works fine, just the 3.4 version has prob…

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## [Midibus in a seperate thread - Feedback loop detected](https://discourse.processing.org/t/midibus-in-a-seperate-thread-feedback-loop-detected/5126)

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**Author:** [@fschober](https://discourse.processing.org/u/fschober)\
**Replies:** 4\
**Last updated:** [November 7, 2018, 4:40pm UTC](https://discourse.processing.org/t/midibus-in-a-seperate-thread-feedback-loop-detected/5126 "2018-11-07T16:40:16Z")

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Dear forum members! I am just writing a patch to sonficate solar wind data i am rexeiving out of a txt file from a server. I have managed to get the data parsed and send it to an external program via midibus. Now i go…

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## [Timebonus doesn't reset](https://discourse.processing.org/t/timebonus-doesnt-reset/5319)

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**Author:** [@kinglucas](https://discourse.processing.org/u/kinglucas)\
**Replies:** 19\
**Last updated:** [November 7, 2018, 4:17pm UTC](https://discourse.processing.org/t/timebonus-doesnt-reset/5319 "2018-11-07T16:17:58Z")

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The time bonus doesn’t reset when I press ‘r’ to restart game how do I make sure that the timeBonus also resets with the points and amount of balls. int screensizex, screensizey; PImage img; int mode = 0; int INTRO = 0;…

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## [Draw image from particular corner](https://discourse.processing.org/t/draw-image-from-particular-corner/5322)

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**Author:** [@KeirMeDear](https://discourse.processing.org/u/KeirMeDear)\
**Replies:** 5\
**Last updated:** [November 7, 2018, 4:10pm UTC](https://discourse.processing.org/t/draw-image-from-particular-corner/5322 "2018-11-07T16:10:19Z")

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So I’m aware you can position images in processing using different image modes. I was wondering how using imageMode(CORNERS) I would be able to position images from the bottom left corner. So if the image was drawn this …

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