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u(t) is called 60 times per second. t: Elapsed time in seconds. S: Shorthand for Math.sin. C: Shorthand for Math.cos. T: Shorthand for Math.tan. R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5) c: A 1920x1080 canvas. x: A 2D context for that canvas.
Theme challenge of the month: #crypto
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  • Red Sphere Reflection #raytracing (high resoluton)

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  • u/pavel
    (x*x+y*y+z*z+3)**2>16*(x*x+y*y) is directly from https://en.wikipedia.org/wiki/Torus
  • u/pavel
    with R=2 and r=1
  • u/pavel
    This example shoots rays from (0,0,4). In order to rotate the shape you have to move where the rays come from, the camera!
  • u/tomxor
    Thanks for the explanation 👍

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  • Experimenting with #raytracing. I finally figured out why the cosine trick from d/1112 works.

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  • half-assed floor marcher

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remix of d/271 by u/3bl3gamer

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  • Based on some of 3b3lgamer's stuff (remix link got broken).

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