Top dweets by u/robbyg

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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robbyg

remix of d/15743 by u/katkip

function u(t) {

c.width|=0
for(Y=13;Y--;)for(X=12;X--;)x.fill(new Path2D(`M${X*180-40} ${Y*90-30+S(X*C(t)+Y*S(t))*3}l90,45,l-90,45l-90-45z`))

Sep 20 2019 2:01 PM UTC

}// 125/140

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Unpacked and simplified (for better or worse)

u/robbyg

#path2d
u/katkip

good idea

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robbyg

function u(t) {

for(c.width|=i=9;i--;)x.stroke(new Path2D(`M${560+i*100+S(t)*300} 440h50v200h-50z`))

Sep 6 2019 3:24 PM UTC

}// 84/140

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Stroked #default using Path2D. Lots of room for activities.

u/robbyg

#path2d

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robbyg

function u(t) {

a=t?a+=(Math.random()*2-1):400
x.fillStyle='#000a'
x.fillRect(960+C(t)*a,540+S(t)*a,9,9)

Aug 21 2019 3:30 PM UTC

}// 88/140

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Tracing a circle.

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robbyg

function u(t) {

for(v=26,a=40,s=t%1,o=20*(1-s);v--;)for(h=48;h--;x.fillRect(o+h*a,o+v*a,a*s,a*s))x.fillStyle=['#fff','#000'][~~(t+h+v)%2]

Jun 10 2019 3:40 PM UTC

}// 121/140

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robbyg

remix of d/5332 by u/robbyg

function u(t) {

for(w=i=c.width|=0;i--;)x.fillRect(w/2+C(i*t/80)*w/2,i,8,8)

Jul 17 2018 1:26 PM UTC

}// 59/140

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robbyg

remix of d/6369 by u/tmcw

function u(t) {

for(i=200;i--;)x.fillText('╲╱'[~~(Math.random()*2)],i*10,t*600)

May 15 2018 2:00 PM UTC

}// 63/140

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Micro #maze

u/magna

57: for(r=i=200;i--;r+=r*t|4)x.fillText('╲╱'[r&1],i*10,t*600)
u/magna

56: for(r=i=2e3;i-=10;r+=r*t|4)x.fillText('╲╱'[r&1],i,t*600)

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robbyg

remix of d/7550 by u/prplz

function u(t) {

for(X=120;X--;)for(Y=68;Y--;x.fillRect(X*16,Y*16,16,16))x.fillStyle=`hsl(${S(X**2+Y**2+t)*120},50%,50%)`

Apr 3 2018 4:46 PM UTC

}// 104/140

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Happy spring!

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robbyg

function u(t) {

for(Y=108,z=20;Y--;)for(X=192;X--;)x.fillStyle='hsl('+(X*Y*t)%360+',80%,40%)',x.fillRect(X*z,Y*z,z,z)

Mar 13 2018 4:28 PM UTC

}// 101/140

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robbyg

remix of d/5417 by u/robbyg

function u(t) {

x.fillStyle='hsl('+(t*5.6)%360+',50%,50%)';x.fillRect(960+C(t/2)*400+C(t*3.7)*100,540+S(t/2)*400+S(t*3.7)*100,9,9)

Jan 3 2018 9:40 PM UTC

}// 114/140

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robbyg

function u(t) {

x.fillRect(960+C(t/2)*400+C(t*3.7)*100,540+S(t/2)*400+S(t*3.7)*100,9,9)

Jan 3 2018 9:14 PM UTC

}// 71/140

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