Dweets by u/futureperfect

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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Current theme challenge: #Opposites

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futureperfect

function u(t) {

d=Math.hypot(C(t/4),S(t/4)-1+1/18);
x.fillStyle=R(255*Math.pow(.9,d),255*Math.pow(.4,d),255*Math.pow(.05,d));
x.fillRect(0,0,1920,1080);

Dec 29 2017 10:52 PM UTC

}// 137/140

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A rough model of the perceived color of the sun throughout the day, assuming the ground didn't exist and also numbers are fake.

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futureperfect

function u(t) {

c.width=1920;
for(j=-100;j<100;j++){for(i=-150;i<200;i++){x.fillRect(400+i*30+Math.pow(-1,j)*S(t)*300, 400+j*15+S(t)*300, 15, 15)}}

Dec 27 2017 8:46 PM UTC

}// 131/140

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u/lionleaf

Try staring at this in fullscreen. It messes with my visual system

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futureperfect

remix of d/3697 by u/Citiral

function u(t) {

w=1920;for(c.width=i=w;i>=0;i-=10)for(j=0;j<1080;j+=10){i2=i-w/2;j2=j-1080/2 
o=5*(C(t*i2/60)+S(t*j2/60));
x.fillRect(i,j,o,o)}

Dec 27 2017 6:12 PM UTC

}// 127/140

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futureperfect

function u(t) {

c.width=1920;r=Math.floor(t*60);for(b=1;b<110;b++){a=r;i=0;while(a>1){x.fillText(a,i*9,b*9);if(a%2===1){a=3*a+1;}else{a=a/2;}i+=1.5;}r++}

Dec 27 2017 5:55 AM UTC

}// 137/140

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A little midnight Collatz for you all

u/taupelink

#collatz

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futureperfect

function u(t) {

if(Math.floor(t*11)%9===0){
a=960+S(t)*540;
b=C(t)*540+540;
x.moveTo(960,0);
x.lineTo(a,b);
x.moveTo(960,1080);
x.lineTo(a,b);
x.stroke();}

Dec 27 2017 1:32 AM UTC

}// 139/140

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