Dweets awesomed by u/lionleaf

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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cristea

function u(t) {

c.width=2e3;for(i=20;i--;){i%2?b=i:b=20-i;x.fillStyle='#e29';x.fillRect(i*99,9*(b*9)*C(t)+500,50*S(t),200*S(t))}

Jan 14 2017 4:16 PM UTC

}// 112/140

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lionleaf

remix of d/601 by u/ose

function u(t) {

for(i=0;i<20;i++){
x.fillStyle=R(S(i*t)*255,S(i+1+t)*255,S(i+2+t)*255);
x.fillRect(i*150+100*S(t),t*50%1080,S(T(t*i))*50,150);
}

Jan 14 2017 4:14 PM UTC

}// 128/140

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u/donbright

beautiful
u/leonarven

Almost retro! Nice!

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iverjo

remix of d/597 by u/iverjo

function u(t) {

c.width=1920;for(i=-2;i<2;i+=.05)for(j=-4;j<4;j+=.05)X=j-3*S(t),Y=i+C(t),1/(j*j+Y*Y)+1/(X**4+i**4)>1&&x.fillRect(j*240+960,i*240+540,12,12)

Jan 14 2017 3:55 PM UTC

}// 139/140

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Doesn't work in FireFox atm because of the ** operator

u/iverjo

Yay, Firefox 52 is now released and it supports the ** operator :D
u/iverjo

#metaballs

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New_Core

remix of d/590 by u/New_Core

function u(t) {

c.width=2e3;for(b=i=200;i--;)i>180?a=10*S(t*4+i*9):a=0,x.fillRect(1e3+2*(b-i)*C(i-t)*S(i-t)+100*S(t+i*0.03-a*.08)+b*S(t/2),i*5+a,5,5)

Jan 14 2017 12:28 PM UTC

}// 133/140

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A tornado ;)

u/sigveseb

nice
u/sigveseb

nice
u/sigveseb

btw New_Core, the next hour we're having a dweet-off at a physical location! so expect many incoming dweets :D you add dweets too, and we can include it in the dweet-off :D
u/13thptr

#tornado

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lionleaf

remix of d/592 by u/New_Core

function u(t) {

c.width=2e3;a=99*S(t)+300;;for(b=i=500;i--;)x.strokeStyle='red',X=1e3+a*S(i)*S(i*0.5+.3*T(t))-b*C(t*.5),Y=b+a*C(i),x.lineTo(X,Y);x.stroke();

Jan 13 2017 8:33 PM UTC

}// 140/140

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Hot air baloon caught in a tornado!

u/lionleaf

#balloon

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New_Core

remix of d/590 by u/New_Core

function u(t) {

c.width=2e3;a=200*S(t)+300;for(b=i=500;i--;)X=1e3+a*S(i)*S(i*0.5-t)-b*C(t*.5),Y=b+a*C(i),x.lineTo(X,Y);x.stroke();

Jan 13 2017 11:57 AM UTC

}// 114/140

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u/sigveseb

now add shadows :D

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New_Core

remix of d/590 by u/New_Core

function u(t) {

c.width=2e3;a=200*S(t)+300;for(b=i=500;i--;)x.fillRect(1e3+a*S(i)*S(i*b)-b*C(t),b+a*C(i-t)*C(i*2),5,5)

Jan 13 2017 8:48 AM UTC

}// 102/140

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lionleaf

remix of d/587 by u/BriSeven

function u(t) {

N=80;c.width=2e3;for(j=N;j;j--)for(i=N;i;)x.fillRect(980+S(j/N*8)*150+T(i/N*4)*99,
540+C(j/N*8)*150+C(t+i--/N*4)*300,5,5)

Jan 12 2017 9:07 PM UTC

}// 121/140

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A golfed remix which should leave some more room to play around with :)

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BriSeven

function u(t) {

N=50;P=44/7;c.width=1920;for(j=0;j<N;j++)for(i=0;i<N;i++)
x.fillRect(980+S(j/N*P*2)*150+S(i/N*P)*300,
540+C(j/N*P*2)*150+C(t+i/N*P)*300,5,5)

Jan 6 2017 7:37 AM UTC

}// 140/140

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u/iverjo

Cool, a torus!
u/donbright

NICE
u/Purpzie

Shortened by 5 characters: for(c.width|=a=0,N=50,P=44/7;a<N*N;)x.fillRect(980+S((j=0|a++/50)/N*P*2)*150+S((i=a%50)/N*P)*300,540+C(j/N*P*2)*150+C(t+i/N*P)*300,5,5)
u/Cloud

#tor

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BriSeven

remix of d/579 by u/BriSeven

function u(t) {

m=160;x.fillStyle=R(C(h=t/2)*m+m,S(h-.5)*m+m,S(-h-.5)*m+m,.01);x.fillRect(t%13*m,0,4,2e3);x.drawImage(c,5*C(t),0,1920,1060)

Jan 5 2017 1:09 AM UTC

}// 123/140

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taste the rainbow maximum amperage edition

u/iverjo

Ooh, the red/orange/yellow thing top left almost looks like a flame. A flame variant with only flame colors would be nice, I think
u/donbright

wild

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