Top dweets by u/rileyjshaw

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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rileyjshaw

function u(t) {

c.width|=0
x.globalCompositeOperation='xor'
x.arc(S(t)*600+960,540,3e2,0,7)
x.fill()
x.beginPath()
x.arc(S(-t)*600+960,540,1e2,0,7)
x.fill()

Apr 26 2017 9:11 PM UTC

}// 140/140

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rileyjshaw

function u(t) {

for(w=c.width=90,i=w*w;i--;x.fillStyle=`hsl(0,0%,${(t*29^i)%99}%)`)x.fillRect((i/w+i*w)%w,i%w,1,1)

Sep 24 2020 6:18 PM UTC

}// 98/140

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elevators

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rileyjshaw

remix of d/2602 by u/rileyjshaw

function u(t) {

t*=s=60
x.beginPath()
for(x.globalAlpha=.1;t&&o<t;x.lineTo(m+q,S(o)*o+q))m=C(o+=.04)*o,q=S(2*m/s)*s
x.fill()
o=t

Aug 3 2019 10:19 PM UTC

}// 112/140

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rileyjshaw

remix of d/2619 by u/rileyjshaw

function u(t) {

c.width|=0
x.globalCompositeOperation=C(t*=2)<0&&'xor'
for(i=2;i--;x.fill())
x.beginPath(),x.arc(960-S(t)*540*i,540,(2-i)*100,0,7)

Apr 27 2017 3:47 PM UTC

}// 130/140

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Bit of golf…

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rileyjshaw

remix of d/2608 by u/rileyjshaw

function u(t) {

c.width|=0
for(i=-9;i++<99;x.globalCompositeOperation='xor')x.fillRect(i*30,0,S(t/3)*99,2e3)
while(i--)x.fillRect(0,i*15-99,2e3,C(t/5)*40)

Apr 26 2017 8:59 PM UTC

}// 138/140

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Looks nice with themes, eg:

u/rileyjshaw

c.style.background='#000';x.fillStyle='#080'

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rileyjshaw

remix of d/15303 by u/rileyjshaw

function u(t) {

for(i=0,x.lineWidth=3,x.strokeStyle=R(f=~~t,f*4%255,f*9%175+80);(i+=3/t)<1;x.beginPath(),x.arc(860,540,1e5*(1-i)*S(t/1e3),f,i*22))x.stroke()

Aug 6 2019 5:13 PM UTC

}// 140/140

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rileyjshaw

function u(t) {

c.width|=0

for(i=-2;i++<20;x.globalCompositeOperation='xor')x.fillRect((i+S(t))*99,0,80,2e3)
while(i--)x.fillRect(0,(i-1-C(t/3))*60,2e3,80)

Apr 26 2017 8:51 PM UTC

}// 140/140

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lissajous, kinda

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rileyjshaw

function u(t) {

for(w=c.width=90,i=w*w;i--;x.fillStyle=`hsl(${i*t},88%,45%)`)x.fillRect((i/w+i*w)%w,i%w,1,1)

Sep 24 2020 6:30 PM UTC

}// 92/140

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rileyjshaw

function u(t) {

for(w=c.width=90,i=w*w;i--;x.fillStyle=R(...`${9n**99n}`.split('').map(n=>n*26).slice(a=i*t%92,a+3),.3))x.fillRect((0|i/w+i%w*13)%w,i%w,2,2)

Sep 24 2020 6:09 PM UTC

}// 140/140

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dweet not found…

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rileyjshaw

remix of d/19987 by u/rileyjshaw

function u(t) {

for(w=c.width=60,i=w*w;i--;x.fillStyle=['#000','#fe2','#825'][0|(999n**99n).toString(3)[(t*9|i/w)%640]])x.fillRect((0|i/w+i%w*13)%w,i%w,1,1)

Sep 19 2020 1:50 AM UTC

}// 140/140

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