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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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  • 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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  • Observatory 🔭

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  • Pipes remix with lighting and occlusion

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  • Shadow Font
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  • u/deobfuscate
    Whoops, accidentally posted it twice.
  • u/cantelope
    |= isn't or-equal, it's the bitwise or, not an operational or... in the vein of a *= b, it performs the bitwise 'or' operation on the settee. e.g. a |= b is the same as a = a|b ...hope this helps :)
  • u/deobfuscate
    I messed around with it: 0|0 is 0, 1|1 is 1, and so on. But if both numbers are different, it returns the sum.
  • u/KilledByAPixel
    to clear the canvas you just have to do a math operation to the width or height, i use |=0 for some reason but you can use +=0 or -=0 or *=1 etc

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  • Outline Font
  • u/deobfuscate
    Golfed. with(x)for(i=6,lineJoin='round';i--;strokeText('DWITTER',90,700))font="24em'",lineWidth=9+i*30,strokeStyle=i%2?R():'#fff'\

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  • Standing Wave
  • u/donbright
    dude with Tan instead of Sin this looks really odd

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  • Jumpy Rope 🐢 Click to jump!

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  • Frogger 🐸 Use dpad to move. Go right to next level. #game
  • u/tomxor
    Nice, moar games!
  • u/KilledByAPixel
    Thanks! Full screen recommended, each level gets a bit faster.
  • u/tomxor
    Got to level 8, pretty hard throw Z-2. Only issue is that difficulty is slightly tied to OS key repeat delay and rate. But keyup is not fitting in here so I don't see a solution.
  • u/jdspugh
    Amazing

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