Dweets awesomed by u/saon

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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firegodjr

remix of d/9768 by u/firegodjr

function u(t) {

x.font='3em x'
for(m=j=32;j--;)for(i=63;i--;)x.fillText('◢◣◤◥'[Math.random()*4|0],i*m,j*m),x.fillStyle=R(b=(t*m+(i^(t*m-j)))%99*2)

Jan 26 2019 8:01 PM UTC

}// 130/140

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Fractal Burn

u/joeytwiddle

Noisy triangles remind me of this: https://twitter.com/BalintCsala/status/99216…

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pavel

remix of d/11920 by u/pavel

function u(t) {

with(x)for(c.width|=j=90;--j;stroke())for(Z=j/2-3*t%.5,lineWidth=1+50/Z/Z,beginPath(i=7);i--;)arc(960,540,1e3/Z,a=(1.257*i+Z/7-t)%6.283,a)

Jan 23 2019 2:48 AM UTC

}// 138/140

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u/joeytwiddle

I like how the middle is going inwards, paradoxically

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katkip

remix of d/11885 by u/katkip

function u(t) {

seed=4
c.width*=1;for(i=43;i--;)for(j=71;j--;)
x.fillRect(j*30+S(i/seed+t)*100-100,i*30+C(j/seed+t)*100-100,30,30)

Jan 19 2019 6:50 PM UTC

}// 114/140

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It is going up. To go down, change seed=0.02

u/katkip

Haha, this got 20 likes
u/Xen

seed=5+C(t)*2
u/katkip

The perfect straight one is seed=.0123
u/katkip

44 likes om!
u/vain

Very cool and smooth looking fx

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katkip

function u(t) {

f=(X,Y,s)=>{if(s>6)x.fillStyle=R(C(t+s)*256),x.fillRect(X-s/2,Y,s,s),f(X-s,Y,s/2),f(X,Y-s*t,s/2),f(X+s,Y,s/2),f(X,Y+s/t,s/2)};f(960,540,750)

Jan 19 2019 5:53 PM UTC

}// 140/140

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Hell #satan. #red #recursive #recursion. I still love god and hate satan

u/metamero

i loved this

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metamero

remix of d/11068 by u/pavel

function u(t) {

with(x)for(i=c.width|=0,x.lineWidth=42,lineCap='square';i--;)for(stroke(),beginPath(k=2);k--;)lineTo(64*(i%32-k),64*((i>>5)-(k^T(i*i+t)>0)))

Jan 14 2019 1:06 PM UTC

}// 140/140

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#maze

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f8f82804

remix of d/11689 by u/f8f82804

function u(t) {

for(i=c.width^=0;i--;x.fillRect(X/d+960,Y/d/.9-1150,s=47-d*2e4,s))a=S(ϕ=i/612),θ=i*37+C(i/99+t),d=Math.hypot(X=S(θ)*a,Y=C(ϕ)+3,C(θ)*a+5)/3e3

Jan 11 2019 8:11 PM UTC

}// 140/140

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#waves on a #perspectives #sphere -- #d3 #pointcloud

u/f8f82804

this dweet uses a better perspective transform based on Math.hypot -- #hypot
u/f8f82804

The projection still isn't perfect, because I'm rotating the sphere's axis towards the viewer by positioning it below the camera. The resulting distortion is approximately corrected by scaling the Y coordinate with /.9.
u/f8f82804

#perspective

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katkip

remix of d/11742 by u/katkip

function u(t) {

c.width^=0;for(i=999;i--;)x.lineTo(960+S(i*S(4)+t/9)*1e3,540+C(i*S(8)+t/9)*1e3);x.fill()

Jan 11 2019 2:48 PM UTC

}// 88/140

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katkip

remix of d/11740 by u/katkip

function u(t) {

c.width^=0;for(i=800;i--;)x.lineTo(960+S(t/2-i*5)*1e3,540+C(t-i*4)*900);x.fill()

Jan 11 2019 2:45 PM UTC

}// 80/140

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joeytwiddle

remix of d/11709 by u/joeytwiddle

function u(t) {

t%1<.01&&(p=(X,Y,W,I,H=W/2)=>H>1?[0,1,2,3].map(i=>p(X+i%2*H,Y+H*(i>1),H,I*Math.random()**.2)):x.fillRect(X,Y,I,I))(0,0,c.width=R=512,5)

Jan 10 2019 10:29 AM UTC

}// 135/140

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golfed #recursive #fractal #cloud

u/katkip

#massive
u/joeytwiddle

guess: What happens if you remove one of the numbers from the list?
u/f8f82804

Neat trick with just three numbers :) It took me a minute...

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Undefined

remix of d/11634 by u/katkip

function u(t) {

t||x.translate(956,536);for(i=360;i--;x.fillStyle=`hsl(${C(frame/9)*T(i/9)*99&i} 99%50%)`)x.fillRect(i*4,0,5,5);x.rotate(.01)

Jan 4 2019 1:38 PM UTC

}// 125/140

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I love the & operator way too much lol

u/sigveseb

Trippy

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