Ray Marching SDF Smoke #improved fps by pavel

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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pavel

remix of d/16169 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𫁥𭀠𪐽𝐶𜀰𛁷👣𛡷𪑤𭁨🐹𞐬𦀬𦐬𦠬𪠬𬰽𜐶𞱩𛐭𞱸𛡦𪑬𫁒𩑣𭀨𦀽𪐥𭰬𦐽𪐯𭰬𜐬𛠶𛑚𛱷𚐩𩡯𬠨𪠽𝀬𦠽𭰻𪠭𛐻𚑚𛐽𣑡𭁨𛡨𮑰𫱴𚁘𛐵𜀬𦐯𜠬𦠩𛑳𛑓𚁙𛱳𚱴𚠴𚐪𞀫𠰨𝐪𤰨𦐯𬰫𠰨𦀯𝠩𚐫𝐪𤰨𦀯𬰫𤰨𦠯𬰫𦐯𝠫𭀪𞀩𚐫𭀩𚠵`.replace(/u../g,'')))

Oct 19 2019 4:18 AM UTC

}// 134/140

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Ray Marching SDF Smoke #improved fps

u/tomxor

huh, did not know about Math.hypot, also it's weird how sensitive V8 is to globals... or rather how it seems incapable of optimising them into locals itself.
u/tomxor

#smoke
u/aleamb

#sdf #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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