Dweets awesomed by u/Jenky

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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cantelope

function u(t) {

t?w=c.width=n:n=1
onmousemove=e=>n=e.pageY
for(i=6;i--;x.lineTo(w/2+(Z=1/(2+C(p=1.257*i*2+t)))*S(p)*w/2,Z*w/2-w/20),x.stroke());

Apr 9 2017 10:25 PM UTC

}// 128/140

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per donbright's suggestion... :D

u/cantelope

mouse Y position controls resolution
u/donbright

lol surely there is more we can do
u/tapgiles

Cool! Some of the lines seem thicker, and some seem fainter. Is there an overdrawing issue, perhaps?

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cantelope

function u(t) {

w=c.width=400
for(i=8;i--;X=w/2+(Z=1/(2+C(p=1.047*i*2+(i<4)+t)))*S(p)*w/2,Y=Z*w/2-w/20,i==3?x.moveTo(X,Y):x.lineTo(X,Y),x.stroke());

Apr 9 2017 10:23 PM UTC

}// 132/140

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🕎 Shalom! 🕎

u/donbright

great use of perspective

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cantelope

function u(t) {

w=c.width=500
x.fillRect(0,0,w,w)
x.strokeStyle="red"
for(i=6;i--;x.lineTo(w/2+(Z=1/(2+C(p=1.257*i*2+t)))*S(p)*w/2,Z*w/2-w/20),x.stroke());

Apr 9 2017 9:39 PM UTC

}// 139/140

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\m/ (>.<) \m/

u/cantelope

it's fun to adjust the c.width=X value. for low values it gets very blocky, but shape position should not be affected.
u/donbright

adjust c.width with mouse: t?w=c.width=n:n=1 onmousemove=e=>n=e.pageY for(i=6;i--;x.lineTo(w/2+(Z=1/(2+C(p=1.257*i*2+t)))*S(p)*w/2,Z*w/2-w/20),x.stroke());
u/cantelope

@donbright lol excellent https://www.dwitter.net/d/2459

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cantelope

remix of d/2452 by u/cantelope

function u(t) {

w=(c.width|=0)/2
x.fillStyle="#64f"
for(i=2e3;i--;x.fillRect(w+S(p=i+t)/(Z=4+C(p)*(h=1+S(i/99-t*4)/2))*w*h,540+1/Z*(i-999)*w/300,s=40/Z,s));

Apr 9 2017 6:17 AM UTC

}// 140/140

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u/magna

<3
u/donbright

loved it, remix w mouse control https://www.dwitter.net/d/2460

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magna

remix of d/2451 by u/cantelope

function u(t) {

x.fillRect(0,0,(w=960)*2,w*2)
for(i=99;i--;p=i/5+t,x.clearRect(w+1/(Z=3+C(p))*(i-50)*w/20,540+S(p)/Z*w,s=199/Z/Z,s))x.globalAlpha=.1

Apr 9 2017 6:01 AM UTC

}// 132/140

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u/cantelope

nice! :)

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cantelope

remix of d/2451 by u/cantelope

function u(t) {

w=(c.width|=0)/2
for(i=99;i--;x.fillStyle=`hsl(${t*99+i},99%,50%`,x.fillRect(w+1/(Z=3+C(p=i-t*2))*(i-50)*w/30,540+S(p)/Z*w,s=250/(Z*Z),s));

Apr 9 2017 4:58 AM UTC

}// 139/140

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cantelope

remix of d/2449 by u/cantelope

function u(t) {

x.globalAlpha=.1
x.fillRect(0,0,(w=960)*2,w*2)
for(i=99;i--;p=.2*i+t,x.clearRect(w+1/(Z=3+C(p))*(i-50)*w/20,540+S(p)/Z*w,s=199/(Z*Z),s));

Apr 9 2017 2:07 AM UTC

}// 137/140

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u/donbright

wow
u/magna

I love this series.
u/magna

Golfed down by 5 characters: https://www.dwitter.net/d/2454
u/lionleaf

#perspective #spiral

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cantelope

function u(t) {

x.globalAlpha=.1
x.fillRect(0,0,(w=960)*2,w*2)
for(i=18;i--;p=.7*i+t,x.clearRect(w+1/(Z=3+C(p))*S(p)*w,540+(i<9?.4:-.5)/Z*w,s=199/(Z*Z),s));

Apr 9 2017 12:54 AM UTC

}// 140/140

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fixed a FF bug. apparently it doesn't like the syntax Z**2

u/donbright

this has a really cool look

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marc8

function u(t) {

c.width|=i=0
for(b=(m=80)+(f=m+(l=5*m));i<7;i++)"}P7WZOoQ_".charCodeAt(t%10)&2**i&&x.fillRect(i<3?m:i%2?0:f,i>4?b:i>2?m:i*f,r=i<3?l:m,f-r)

Apr 7 2017 1:23 PM UTC

}// 139/140

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u/magna

Awesome!

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Jenky

function u(t) {

w=c.width=568;r=Math.random
t?0:(m=e=>z=[r()*w,r()*w/2])()
onmousemove=e=>{(e.x-z[0])**2+(e.y-z[1])**2<81?m():0}
x.arc(...z,9,0,7);x.fill()

Apr 7 2017 10:31 AM UTC

}// 139/140

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Try to hover over the circle! Doesn't work in fullscreen :'(

u/Jenky

Did make a more game-like version that did work fullscreen at 190 bytes, kept score and everything, but couldn't golf it any lower
u/Jenky

Also this one only works in Chrome again, thanks to e.pageX/pageY being slightly too long
u/donbright

c.width=568 t?0:(m=e=>z=[f=frame%568,(f<<4)%250])() onmousemove=e=>{(e.pageX-z[0])**2+(e.pageY-z[1])**2<81?m():0} x.arc(...z,9,0,7);x.fill()
u/donbright

that is a firefox version :)

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