Top dweets by u/LimeLaser

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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Opposites

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LimeLaser

function u(t) {

X=o=>960+500*C(t+o)
Y=o=>540+500*S(t+o)
x.beginPath()
x.moveTo(X(1),Y(2))
x.bezierCurveTo(X(4),Y(8),X(16),Y(32),X(64),Y(128))
x.stroke()

Sep 1 2019 8:31 AM UTC

}// 136/140

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Curved Geometry Drawer

u/LimeLaser

This uses the bezierCurveTo method with different values to see what shapes it can draw.
u/marmph

slap a few sines and cosines together and BAM ART

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LimeLaser

remix of d/12626 by u/qm3ster

function u(t) {

r=Math.random
p=t?p.map(([u,v,i,j]=[99,99,1,1])=>[u+i,v+j,i+(960-u)/1e4+r()-0.5,j+(540-v)/1e4+r()-0.5,x.fillRect(u,v,4,4)]):[...Array(99)]

Mar 7 2019 7:30 AM UTC

}// 138/140

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99 Accelerating Particles (thank you qm3ster)

u/LimeLaser

I have been hoping to make a particle system that persists individual positions and velocities for a while now. With the code golfing qm3ster has done, I can finally do it!

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LimeLaser

function u(t) {

for(i=768;i--;){p=(61*window.p+53)%2304+1||1
X=--p%64
Y=p/64|0
x.fillStyle=`HSL(${180*S(X)*S(Y)+t*t},75%,50%)`
x.fillRect(30*X,30*Y,30,30)}

Dec 26 2019 7:13 AM UTC

}// 139/140

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64x36 20FPS Random Sampling Renderer

u/LimeLaser

My attempt to implement per-pixel rendering at interactive rates. Using a Linear Congruential Generator, the pixels to render are chosen psuedo-randomly. It takes 3 frames to render all 2304 pixels, so the actual FPS is 20.

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LimeLaser

function u(t) {

x.beginPath(s=8e3,d=5)
p=[[C(t),0,d+t**.8],[0,S(t),d+t**.8]]
p.map(v=>x.lineTo(960+s*v[0]/v[2],540-s*v[1]/v[2]))
x.stroke()

Aug 29 2019 4:31 AM UTC

}// 123/140

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Grid Spiral

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LimeLaser

function u(t) {

r=Math.random
with(x){
fillStyle=R(255*r(),255*r())
fillRect(1e3*r(),0,8,8)
save()
translate(960,540)
rotate(t)
drawImage(c,0,0)
restore()}

Jun 2 2019 7:28 AM UTC

}// 139/140

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Cool Spinning Glitch

u/LimeLaser

I'm not really sure why it does this, but I got this effect while trying to rotate and draw the canvas onto itself.
u/katkip

its because drawimage

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LimeLaser

function u(t) {

x.strokeRect(0,0,1920,1080)
x.fillStyle=R(255*S(t),0,255*-C(t),.005)
x.fillRect(0,0,2e3,2e3)
x.drawImage(c,80+20*C(t),45+2*S(2*t),1760,990)

May 31 2019 6:52 AM UTC

}// 139/140

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Long, Recursive Corridor

u/vinca

beautiful!
u/Xen

nice

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LimeLaser

remix of d/12799 by u/Jezza

function u(t) {

x.globalAlpha=.025
x.fillRect(0,0,1920,1080)
for(i=45;--i;)
x.clearRect(960+320*C(i+t)+640*S(i-t)-25,540+540*S(i+t)-25,50,50)

Mar 22 2019 11:39 PM UTC

}// 125/140

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Venus Flytrap Trails

u/Jezza

So great!

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LimeLaser

function u(t) {

c.width|=0
r=Math.random
p=t?p.map(([i,j,u,v]=[2e3*r(),2e3*r(),2*r(),4*r()])=>[(i+u)%2e3,(j+v)%2e3,u,v,x.fillRect(i,j,8,8)]):[...Array(4e3)]

Mar 14 2019 5:42 AM UTC

}// 140/140

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Infinite Snowfall (Which Goes Right Because Modulo)

u/Jezza

Squeezed in some snow that floats left. ❄️❄️❄️ https://www.dwitter.net/d/12751

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LimeLaser

function u(t) {

a=960
b=540
c=3e3*C(t)**2
d=c*S(t)**4
x.moveTo(a-c,b-d)
x.lineTo(a+c,b-c)
x.lineTo(a+c,b+c)
x.lineTo(a-c,b+d)
x.lineTo(a-c,b-d)
x.stroke()

Jun 21 2019 6:25 PM UTC

}// 138/140

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Curved Hallway

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LimeLaser

function u(t) {

r=Math.random;(p=window.p||Array(6000).fill(0).map(()=>({x:1920*r(),y:1080*r()}))).map((d)=>{d.x=d.x>1920?0:d.x+1;x.fillRect(d.x,d.y,1,1)})

Dec 14 2018 7:19 AM UTC

}// 139/140

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Fade to Black / Persisting Values POC (CPU Intensive)

u/katkip

It is satisfying to watch

dwitter.net | LimeLaser (249)