Dweets awesomed by u/systemwizard

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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Xen

remix of d/3514 by u/Xen

function u(t) {

for(x.lineWidth=(x.shadowBlur=i=47)/(t*4);i--;x.strokeRect(850+i*i/2*S(t*i),490+i*i/2*C(t*i),i*9,i*9))x.shadowColor="#"+frame%1e3

Nov 13 2017 10:25 PM UTC

}// 129/140

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u/artfarnaa

what is frame?
u/Xen

the number of frames that have elapsed

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veubeke

remix of d/3469 by u/New_Core

function u(t) {

x.fillRect(0,0,t?x.font="5cm'":c.height=a=1e4,b=1080)
x.drawImage(c,0,i=b+t*60%8*b,a,b,0,0,a,b)
x.fillText("😱",t%20*99-99,590+400*C(t/2)+i)

Nov 6 2017 9:55 PM UTC

}// 139/140

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visy

function u(t) {

c.width=i=1080;for(;i>0;i--){b=t+i*C(t*0.1)*t/999;z=C(b*i)/9990;o=C(z+b);y=S(z+i)*150;x.strokeStyle=R(y,0,0,o);x.strokeRect(i*o,y*b/9,i,i)}

Oct 27 2017 8:58 PM UTC

}// 139/140

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Xen

remix of d/3286 by u/highfestiva

function u(t) {

for(i=19;i>2;i-=0.1)x.beginPath(),x.arc((S(i)*i-i*i)*92/i+2e3,499-99*T(t),240-i*9,0,6),x.fillStyle=`hsla(${S(t*i)*499},90%,40%,.1)`,x.fill()

Oct 12 2017 4:17 PM UTC

}// 140/140

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Shoutz 2 highfestiva.

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highfestiva

function u(t) {

for(i=19;i>2;i-=0.1)x.beginPath(),x.arc((S(i)*9-i*i)*99/i+2e3,1e3-i*56,240-i*9,0,6),x.fillStyle=`hsl(${S(i+t)*130},90%,40%)`,x.fill()

Oct 12 2017 9:51 AM UTC

}// 133/140

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u/Xen

done you a remix: 3287

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rgarner

remix of d/3224 by u/rgarner

function u(t) {

a=2e3;c.width=a;x.fillRect(0,0,a,a)
for(i=0;i<a;i++){x.rotate(i/t/i);x.fillStyle=`hsl(${i*t/9},99%,50%)`
x.fillRect(i*C(t),i*S(t)*7,99,33)}

Oct 1 2017 6:19 PM UTC

}// 139/140

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Settles down after an initial chaotic period. Best experienced in full screen with loud music. In IE3.

u/Xen

Nice! try: x.rotate(t/i%13)

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cantelope

function u(t) {

for(x.globalAlpha=.07,x.fillRect(0,0,q=i=2e3,q);i--;)x.clearRect(960+S(p=i/318)*(d=300+S(p*5+C(t/2)*9)*(140+S(t)*70)*C(t*2)),540+C(p)*d,9,9)

Sep 20 2017 4:28 AM UTC

}// 140/140

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u/lionleaf

So smooth!
u/cantelope

change p*5 to p*3 or whatever for different shapes <3

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leonarven

function u(t) {

for(i=w=c.width=600;i--;)x.fillRect(w/2+C(t+i)*S(i/97)*w/6,w/3+S(i/1)*w/6,3,3)

Aug 19 2017 3:17 PM UTC

}// 78/140

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keithclark

function u(t) {

for(a=c.width|=0,G=36,J=S(t)/4;a--;'p}¶¼<¼¶}p'.charCodeAt(Y*C(t)+G-X*J&15)>>(X*C(t)+Y*J+t*G)%15&1&&x.fillRect(X*G,Y*G,G,G))X=a%53,Y=a>>6

May 3 2017 1:26 PM UTC

}// 138/140

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fullscreen rotozoom

u/joeytwiddle

#spaceinvaders #rotozoom #alien
u/yonatan

3-char shorter transposed bitmap (just posting so I won't forget it): 'ĄǼͶ߿׽ԅØ'

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New_Core

remix of d/630 by u/New_Core

function u(t) {

w=2e3;x.globalAlpha=.05;for(x.fillRect(0,0,a=i=w,w);i-=4;)s=99/(-a+(i+t*99)%a),X=a*S(i*99)*s+1e3,Y=a*C(i)*s+500,x.clearRect(X,Y,s*9,s*9)

May 1 2017 6:47 AM UTC

}// 137/140

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u/donbright

this looks so cool
u/magna

Shaved down to 122: https://www.dwitter.net/d/2656
u/iverjo

#stars #starfield

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