Questions tagged [javascript]

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Creating Signed Distance Fields Images On The Fly For WebGL Application

I am working on a "CAD" like program in HTML5 that requires drawing many thousands (700,000+) of images on the screen. I think, "fortunately" the many images are replicated uses of a unique set of ...
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0answers
194 views

How can I convert a shape made out of pixels to vertices

I'm trying to implement the solution to get the minimum dissection into rectangles of a rectilinear polygon. My shape is made out of pseudo-pixels (different width/height) but for the moment let's ...
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3D model outline using stencil buffer

I'm trying to outline a 3D model in WebGL. I've tried using a stencil buffer techique with glLineWidth and glPolygonMode. However, Mozilla's WebGL reference says that the minimum and maximum widths of ...
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169 views

How To Generate High Quality Bitmap From Canvas For WebGL Texture

I would like to generate a bitmap for use with a webgl texture generated from a 2d canvas, but I don't think I am doing it correctly. I know how to display the contents of one canvas into another by ...
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0answers
43 views

View / print index values?

So i'm currently trying to draw a 3D cube, and from what I understand everything should be working right, but It's coming out weird and I believe it's because the ordering of my indexes is wrong. Is ...
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0answers
15 views

How to add a second calculation to an already working transform feedback webgl2 code?

I'm doing a project that involves transform feedback and WebGL2. I was able to make a transform feedback work using two buffers, to calculate an update in 3d positions of particles. But now I'd like ...
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0answers
24 views

How to draw a pdb 3d structure in webgl?

I am trying to create a 3d structure in webgl using 3d coordinates from a pdb file mentioned below: https://www.rcsb.org/structure/1RE2 I don't know which one is the appropriate one, so i used gl....
-2
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1answer
444 views

How can I make a cube with faces of different colors? Webgl

I have to draw cubes with faces of different colors (each per face), but I don't know how to accomplish this task: I draw cubes using CPU and GPU meshes (no vertexBuffer or three.js "style") and I don'...