Questions tagged [java]

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Output to more than one canvas texture in processing with shader OpenGL

as the question suggests im looking to output to more than one canvas element in processing to speed up the calculations and limit shader draw calls. It has to be as simple as possible to be ...
Paul Goux's user avatar
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1 answer
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3D projection Axis inversion problem (Java/Processing)

Unfortunately, I always had problems with math and was never good at it. I'm currently trying to combine math with my knowledge and my passion for programming. Brief introduction: In math, we have ...
mardari's user avatar
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Is glActiveTexture() still needed?

I'm using OpenGL 4.30 with JOGL (in Java). I'm playing with basic texturing, trying to learn how it's done. The textbook I'm using has the following code: ...
Adam Smith's user avatar
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1 answer
356 views

Why is my texture being stretched out on a triangle strip?

I'm trying to apply a texture to 4 different triangle strips using JOGL (OpenGL/Java). I'm trying to make a 1000×1000 path in a square, where the path is 100 wide. The texture should be stamped 10 ...
Adam Smith's user avatar
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0 answers
77 views

How to programmatically extract all rectangle shapes from SVG file?

I have a SVG which contains rectangles with other shapes. How can I extract all rectangle details(co-ordinates, height and width)? Find below svg details where I kept only one rectangle for reference. ...
Srikant's user avatar
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406 views

How to sprite cast in a raycasting engine?

I'm trying to render sprites/textures in my raycasting engine, but I don't quite understand the math behind drawing the columns of the texture I intend to project. I've tried looking at several ...
Joshua Crotts's user avatar
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1 answer
263 views

OpenGL Polygon Offset Fill implementation example code

I am working on a pure java implementation of OpenGL 1 called jGL. I am missing glPolygonOffsetFill and am looking for an example implementation in java, c/c++ example of this GL function in order to ...
Martin Pernollet's user avatar
3 votes
0 answers
89 views

Bezier curve : Problem deriving control points from matrix form

This is my first post on this website so i have put in a lot of research to get my point across to everyone as clearly as possible. Based on a question i posted on stack overflow i have successfully ...
Sync it's user avatar
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How to retrieve RGBA mask used to transform image1 into image2

Let image1 be: And RGBA mask be: (45, 78, 251, 102) Apply mask on top of ...
dylanbatio's user avatar
1 vote
0 answers
163 views

How can i understand the algorithm wu line?

I have Wu's line algorithm but I don't understand all the lines of code very well. ...
noseJ's user avatar
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1 vote
0 answers
219 views

Apply transformation to single vertices in OpenGL in order to deform mesh

I'm making a 2D cell simulation game. The mesh for my cell is basically just a manually-generated triangle fan that looks like this. I would like to reproduce the wobbling/vibration effect on the ...
Lorenzo Notaro's user avatar
3 votes
1 answer
260 views

How to open and render in a second window with OpenGL / JOGL with NEWT

I have a working renderer implemented with Java in JOGL with NEWT. Now I want to implement a Material Editor which should run in a second window. However I can't get a second window up and render in ...
Tare's user avatar
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