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function u(t) {
} //
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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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remix of d/27932 by u/tomxor

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  • u/tomxor
    Here ya go u/joeytwiddle :D don't make a mess! no room for solder wick.
  • u/tomxor
    I'm not sure who tapes a flashlight to their soldering iron though... maybe Doom guy does, ya know, just incase zombies, while soldering door control panels on Mars.
  • u/danny@hille.dk
    Super impressive!

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remix of d/27928 by u/tomxor

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remix of d/20436 by u/tomxor

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  • u/tomxor
    Same concept of XY displacement, but X displacement needs to be inverted when a surface is aligned along Z to give the illusion of the light comming from the observer. Completely unrealistic lighting tricks.
  • u/deobfuscate
    I don't feel like I can make any more dweets with so many good ones like this roaming around.
  • u/danny@hille.dk
    This is just out of this world. #witchcraft
  • u/vain
    Just f*cking amazing! 😎

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  • u/tomxor
    Getting on the bump train with a different method. This one displaces X and Y in proportion to distance from light source, which creates pixel gaps on one side (specular highlights), and overlapping pixels on the opposite (becoming shadows).
  • u/danny@hille.dk
    wow thats chrisp!

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  • Projection Faster and Uncompressed
  • u/@noel
    I love this one and I follow the logic, until the z & w performing. I know it's a bitwise AND operation on z and w, but I don't actually grasp it.
  • u/@noel
    I mean on this one: x.fillRect(i, j, 1, (z & w) / w)
  • u/joeytwiddle
    Here (z & w) / w is the height of the rectangle. If that height is less than 1, then the canvas anti-aliasing renders a grey pixel, instead of a black one.
  • u/@noel
    Thanks u/joeytwiddle Now I think I get it. (z & w) ensures that the value of z remains within the range of the canvas width 'w', and the dividing by w normalizes the height value. Great trick!

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  • Traffic 🚕🚓🚗🚙🚒🚑🚌

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  • The Cristal Ball.

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  • Diving deeper

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  • Remix of d/27866 Stereographic Projection
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  • u/danny@hille.dk
    Hi @Noel, When making a Dweet, think of best practice and do the opposite: only use variables when you need them, and wait until you need to use them the first time to initialize them. 194b, but I'm sure it can be golfed even further: for(g=x.createRadialGradient(d=950,b=540,0,d,b,e=420),g[a="addColorStop"](0,"#4BB"),(x.fillStyle=g)[a](1,"#005"),x.fillRect(e,0,h=1080,h),i=3e3;i--;)x.fillText("◻️",d+S(i+t)*S(i*i)*e,b+e*C(i*i))
  • u/danny@hille.dk
    Cool effect!
  • u/danny@hille.dk
    eval(unescape(escape\`󩭯󬬨󩼽󮌮󨽲󩝡󭍥󤭡󩍩󨝬󡽲󨝤󪝥󫭴󚍤󟜹󝜰󛍢󟜵󝌰󛌰󛍤󛍢󛍥󟜴󜬰󚜬󩽛󨜽󘭡󩍤󠽯󫍯󬭓󭍯󬌢󧜨󜌬󘬣󝍦󩬢󚜬󚍸󛭦󪝬󫍓󭍹󫍥󟝧󚝛󨝝󚌱󛌢󘼰󜌵󘬩󛍸󛭦󪝬󫍒󩝣󭌨󩜬󜌬󪌽󜜰󞌰󛍨󚜬󪜽󜽥󜼻󪜭󛜻󚝸󛭣󫍥󨝲󤭥󨽴󚍤󚽓󚍩󚽴󚜪󤼨󪜪󪜩󚭥󛍢󚽥󚭃󚍩󚭩󚜬󝜬󝜩\`.replace(/u../g,'')))
  • u/danny@hille.dk
    remove \

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