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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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function u(t) {

}//
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  • u/PotatoImaginator
    code is:
  • u/PotatoImaginator
    c.width^=0; x.arc(960,540,540,0,7);x.fillStyle='';x.fill() x.beginPath();x.fillStyle='red'; x.arc(960-540*S(2*t)*(C(t)**2),540-540*C(2*t)*(C(t)**2),(540*(S(t)**2)),0,7);x.fill(); x.beginPath();x.fillStyle='blue'; x.arc(960+540*S(2*t)*(S(t)**2),540+540*C(2*t)*(S(t)**2),(540*(C(t)**2)),0,7);x.fill();

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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)