Ray Marching SDF Smoke by tomxor

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

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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.

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tomxor

remix of d/15952 by u/tomxor

function u(t) {

eval(unescape(escape`景爨眽挮睩摴栽ㄲ〬椽㡥㌻椭ⴻ砮晩汬剥捴⡒㵩╷ⱔ㵩⽷ⰱⰮ㘭娯㘴⤩景爨樽㐬娽眻樭ⴻ娭㴨⡒ⴶ〩⨪㈫⡔⼲⤪⨲⭚⩚⤪⨮㔭⠱㘫匨启猫琪㐩⨸⤫䌨㔪匨启猫䌨刯猪㌩⤫㔪匨刯猫匨娯猫启猪㌫琪㠩⤫琩⨵⥳㴱㘻`.replace(/u(..)/g,"$1%")))

Oct 18 2019 11:35 PM UTC

}// 140/140

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Ray Marching SDF Smoke

u/tomxor

Runs significantly faster in FireFox for some reason.
u/tomxor

Part of the smokeyness is obtained by exploiting artifacts in the ray marching algorithm itself, by only marching a constant and very short depth (4 steps) smooth aberations appear around the true volume (representative of the sphere tracing)
u/DataMeta

WOW!!! #smoke #realistic #compressed
u/tomxor

#raymarching


      u(t) is called 60 times per second.
      t: elapsed time in seconds.
      c: A 1920x1080 canvas.
      x: A 2D context for that canvas.
      S: Math.sin
      C: Math.cos
      T: Math.tan
      R: Generates rgba-strings, ex.: R(255, 255, 255, 0.5)

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