Top dweets by u/sanco

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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sanco

function u(t) {

for(i=0;i<480;i++)x.fillRect(S(t),i*2,-c.width,t)/x.rotate(6* t *  Math.PI / 180);x.translate(320,240);x.fillStyle = R(t*i*i,t*t*i,t*i);

Feb 28 2022 1:48 PM UTC

}// 137/140

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First

u/danny@hille.dk

Sweet - and it looks like candy floss
u/joeytwiddle

#spirograph

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sanco

remix of d/25044 by u/sanco

function u(t) {

c.width=860;m=2e2;x.fillStyle=R(C(t)*m,S(t)*m,C(t)*m);for(i=0;i<1e3;i++)x.fillRect(c.width,i,-c.width,t*2)/x.rotate(2*t*Math.PI/180)

Feb 28 2022 3:33 PM UTC

}// 132/140

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sanco

function u(t) {

c.width=640;for (i = 0; i < 1e2; i++)for (z = 0; z < 1e2;z++)x.fillRect(z*t+S(t)*10,i*t+C(t),2*S(i),5*S(z))/x.rotate(7 * Math.PI / 180);

Feb 28 2022 3:07 PM UTC

}// 136/140

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Explode

Show more comments…
u/danny@hille.dk

Nice! and Welcome to Dwitter :-)
u/danny@hille.dk

suggestion: 7 * Math.PI / 180 can be written as an approximation const: .12 without any significant loss
u/danny@hille.dk

also whenever the order of execution isn't important you can shorten for loops like this: for(i=100;i--;); becaus 0 is falsy, so when i reaches 0 the loop exits
u/danny@hille.dk

you an free up space, so you can center the Explotion like this: c.width=640,x.translate(320,180);for(i=99;i--;)for(z=99;z--;x.rotate(.12))x.fillRect(z*t+S(t)*10,i*t+C(t),2*S(i),5*S(z))
u/danny@hille.dk

this example adds some additional golfhing tricks: 99 is almost 100 :-), use the free slot in the for loop to execute code, you would otherwise execute inside the for loop
u/sanco

Thanks a lot danny! I'm new on this so really appreciate the comments.

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sanco

remix of d/25061 by u/sanco

function u(t) {

for(i=99;i-=3;)for(z=99;z-=3;)x.fillRect(i*19.4+S(i+t)*19.4,z*10.91+C(z+t)*10.91,t,t),x.fillStyle=R(i*+S(t)*2,i+S(t)*2,i+C(t)*3,100);

Mar 2 2022 5:20 PM UTC

}// 133/140

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More patterns

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sanco

function u(t) {

for(i=99;i-=3;)for(z=99;z-=3;x.fillRect(i*20+S(i+t)*20,z*20+C(i*z+t)*20,t*5,t*5),x.fillStyle=R(i*+S(t)*2,i+S(t)*2,i+C(t)*3,100));

Mar 2 2022 3:15 PM UTC

}// 130/140

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Patterns

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sanco

function u(t) {

c.width=860;m=2e2;x.fillStyle=R(C(t)*m,S(t)*m,C(t)*m);for(i=0;i<1e3;i++)x.fillRect(c.width,i,-c.width,t*0.25)/x.rotate(0.5*t*Math.PI/180);

Feb 28 2022 3:28 PM UTC

}// 138/140

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sincostan

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