Hot 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

function u(t) {

c.width|=0
for(r=9;r--;)for(p=50*r/5,q=6.28/p;p--;x.fill(),x.beginPath())x.arc(960+C(z=p*q-t/9)*60*r,540+S(z)*60*r+C(t*4+z*11)*r*4,9,0,7)

Feb 28 2019 2:59 PM UTC

}// 137/140

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(very) loosely based on https://twitter.com/beesandbombs/status/1061…

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robbyg

function u(t) {

B=(X,Y,A,L,h,v)=>L>7&&(x.moveTo(X,Y),x.lineTo(h=X+C(A)*L,v=Y-S(A)*L),B(h,v,A-.3,L*.7),B(h,v,A+.3,L*.7))
t||B(960,1e3,1.57,300)
x.stroke()

Feb 12 2019 4:26 PM UTC

}// 137/140

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#recursive #tree

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robbyg

function u(t) {

f=(X,Y,w)=>{var W=w/2,h=X-W,v=Y-W
x.rect(h,v,w,w)
if(W>9)f(h,v,W),f(h+w,v,W),f(h,v+w,W),f(h+w,v+w,W)}
t||f(960,540,540)
x.fill('evenodd')

Feb 11 2019 1:07 AM UTC

}// 137/140

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#recursive squares

u/robbyg

Thanks u/katkip for the recursive examples
u/katkip

Beautiful
u/robbyg

133: f=(X,Y,w,W,h,v)=>(W=w/2)>4&&(x.rect(h=X-W,v=Y-W,w,w),f(h,v,W),f(h+w,v,W),f(h,v+w,W),f(h+w,v+w,W)) t||f(960,z=540,z) x.fill('evenodd')

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robbyg

remix of d/7574 by u/robbyg

function u(t) {

c.width^=0
for(i=h=540;i--;)x.lineTo(960+C(i)*h*S(t-i**4),h+S(i)*h*C(t+i**4))
x.fill('evenodd')

Feb 12 2019 2:55 PM UTC

}// 95/140

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The void is staring back.

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robbyg

function u(t) {

c.width|=0
for(i=9;i--;)for(v=200;v--;)x.fillRect(520+S(t+v/1e3)*400+i*100,440+v,50,1)

Feb 5 2019 2:37 PM UTC

}// 86/140

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Peacefully swaying #default

u/katkip

Already done: d/11284
u/robbyg

Yeah, I saw that after scrolling for a while in #default. But it's a different take at least.
u/katkip

^ similar one but this is more smooth
u/lionleaf

I enjoy the default remixes. This one is soothing :)

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robbyg

remix of d/12170 by u/robbyg

function u(t) {

c.width|=0
for(i=9;i--;)for(v=200;v--;)x.fillStyle=`hsl(${i*40+v+t*40},50%,50%`,x.fillRect(520+S(t+v/50)*400+i*100,440+v,50*v/150,1)

Feb 5 2019 3:47 PM UTC

}// 132/140

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Rainbow weaving perspective #default that is hopefully not derivative. :D

u/DataMeta

Smoooth
u/DataMeta

#colors

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robbyg

remix of d/12143 by u/katkip

function u(t) {

c.width^=0;for(i=192;i--;)for(j=9;j--;x.fillStyle=`hsl(${h},50%,50%)`)x.fillRect(i*10,h=540-(S(t*2+i*3.12)*C(t+i+j/9)*j/4)*100,10,10)

Feb 4 2019 8:20 PM UTC

}// 133/140

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u/23_Skidoo

x.fillStyle="#fff3";x.fillRect(0,0,c.width,c.height);for(i=192;i--;)for(j=9;j--;x.fillStyle=hsl(${h},50%,50%))x.fillRect(i*10,h=540-(S(t*2+i*3.12)*C(t+i+j/9)*j/4)*100,10,10)
u/23_Skidoo

Or, replace c.width^=0 with x.fillStyle="#fff3";x.fillRect(0,0,c.width,c.height);

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robbyg

function u(t) {

for(h=192;h--;)for(v=108;v--;)x.fillStyle=R(z=~~(h*h-C(t+t)*3*(h|v)+v*v)%255,z,z),x.fillRect(h*10,v*10,10,10)

Feb 1 2019 8:51 PM UTC

}// 109/140

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robbyg

remix of d/8503 by u/robbyg

function u(t) {

X=Y=t;for(i=2e3;i--;x.fillStyle=`hsl(${C(X+Y)*360},50%,50%)`)h=X,x.fillRect(X=950+(S(1*Y)-C(2*X))*440,Y=550+(S(3*h)-C(4*Y))*230,1,1)

Feb 1 2019 4:59 PM UTC

}// 132/140

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Reworked my #attractor based on the excellent examples from @thorbear and @rodrigo.siqueira

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robbyg

function u(t) {

c.width|=0
r=y=>Math.random()*y
a=i=>{for(z=500;z--;)x.fillRect(520+S(t)*400+i*100+r(50),440+r(200),r(5),r(5))}
for(i=9;i--;)a(i)

Jan 28 2019 7:16 PM UTC

}// 129/140

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Static #default

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