Dweets awesomed by u/firegodjr

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: #Food

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firegodjr

remix of d/7650 by u/firegodjr

function u(t) {

c.width=1920
for(y=41;--y;){x.fill();x.beginPath();for(w=33;--w+1;){x.lineTo(60*w,S(t+y/5+w/2)*50+30*y-75)}}

Apr 16 2018 5:30 PM UTC

}// 108/140

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Diet Sinewave Pattern, now with only 108 characters! (Had some leftovers from my original dweet idea that were clogging up the charcount, plus optimized the loops and positioning)

Show more comments…
u/BalintCsala

98 chars: for(c.width|=y=40;y--;x.fill(),x.beginPath())for(w=33;w--;x.lineTo(60*w,S(t+y/5+w/2)*50+30*y-75));
u/firegodjr

Thanks! I'm a bit new to reverse loop iteration, so I didn't think of replacing the --w+1. How does the c.width|=y reset the width properly, though?
u/BalintCsala

It sets it to 1960
u/iverjo

Cool! Deserves more attention
u/magna

98 chars: for(c.width|=y=41;--y;x.beginPath(x.fill()))for(w=33;--w+1;)x.lineTo(60*w,S(t+y/5+w/2)*50+30*y-75)
u/magna

Ah, u/BalintCsala beat me to it... :)
u/jylikangas

96 chars if you replace --w+1 with w--

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jylikangas

function u(t) {

c.width-=(q=t%8<4.2)?7:-7
for(k=i=20;--i+k;)for(j=k;--j+k;)x.fillRect(150+i,90+j+S(-t*3%3.2)*60,1,Math.acos(j/(k*k-i*i)**.5)*3+(q?t:-t)*5&1)

Apr 16 2018 3:26 PM UTC

}// 140/140

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Playing ball...

u/jylikangas

Inspired by an earlier dweet from ETHproductions
u/aleamb

cool
u/iverjo

#bounce
u/13thptr

#d3

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BalintCsala

remix of d/7648 by u/firegodjr

function u(t) {

c.width=200
r=1.57
for(w=2;w--;x.stroke())for(s=5;s--;)for(i=2;i--;)x.lineTo(C(A=t+(i+s+w)*r)*50/(z=S(A)/3+1)+100,50+(s%2*60-30)/z)

Apr 16 2018 8:41 AM UTC

}// 131/140

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Golfed it a bit and

u/BalintCsala

added perspective
u/firegodjr

Excellent :D
u/iverjo

#cube

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Galaxtone

function u(t) {

for(i=0;i<10;i++){x.fillStyle=R(S(t)*255,C(t)*255);x.beginPath();
x.ellipse(400+i*99+S(t)*300,S(t)*99+400,50,C(t)*99+200,0,0,3,1);x.fill();}

Apr 16 2018 12:39 AM UTC

}// 140/140

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141/140 I broke the matrix

u/prplz

When the order of your for loop isn't important you can make it count backwards like this for(i=10;i--;)
u/Galaxtone

oh nice thx for the tip I'm new to this code-golfing site
u/Galaxtone

also I saw something about using with(x) so I think I'll use that for future stuff :p
u/Galaxtone

for(i=10;i--;)with(x){fillStyle=R(S(t)*255,C(t)*255);beginPath(); ellipse(400+i*99+S(t)*300,S(t)*99+400,50,C(t)*99+200,0,0,3,1);fill()} Saved 5 whole bytes using that

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ETHproductions

function u(t) {

for(c.width|=i=128;i--;)for(j=39;j--;x.fillRect(210+j*40+i*q-g,200+i*6*C(q/6),g*2,7))q=S(t*2-i/99-j/6),g=(S(i/2+j*3-t*9)*5+5)*(i>25||i/25)+1

Apr 15 2018 10:53 PM UTC

}// 140/140

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Based on a tweet from @beesandbombs https://twitter.com/beesandbombs/status/9841…

u/ETHproductions

I only noticed right after posting that u/BalintCsala had already made his own interpretation d/7646
u/joeytwiddle

#cloth #material or maybe just beads on a string

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jylikangas

function u(t) {

with(x)for(rect(T(-t)*9,111,c.width=220,i=-1);i++<2;stroke())translate(X=!i*99,X-!!i*22+C(4*t)*-~i)&rotate(t)&rect(9,9,-18,-18)&rotate(t=-t)

Apr 15 2018 3:48 PM UTC

}// 140/140

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Walking boxes

u/jylikangas

Dwitter implementation of http://muuficom.tumblr.com/post/87229339929

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BalintCsala

function u(t) {

for(c.width=i=800;i--;x.fillStyle=`hsl(${i+t*50},80%,50%`)x.fillRect(S(i/99+t/2)*99/(z=i/300)-(w=99/z)/2+400,(99+S(i/50+t)*60)/z+200,w,9/z);

Apr 15 2018 3:41 PM UTC

}// 140/140

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Rainbow road

u/aleamb

nice colors!
u/iverjo

#rainbow

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jylikangas

function u(t) {

for(c.width=i=-1;i++<125;)for(j=75;j--;x.fillRect(99+i-j,(i+j)/(2+T(t)/2)+!h,h|1,~h))h=t+j/13&i/9-t*6,h*=(h<5)*5,x.fillStyle=R(0,i+j,!h*200)

Apr 14 2018 4:56 PM UTC

}// 140/140

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Isometric Islands

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New_Core

function u(t) {

for(w=c.width|=i=30;i--;x.rect(-Z/2,-Z/2,Z,Z))Z=w/(a=i-t%2+2),x.setTransform(k=S(b=a/4*S(t)),l=C(b),-l,k,960,540)
x.fill("evenodd")

Apr 14 2018 2:40 PM UTC

}// 131/140

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u/Chafik.Design

That's something really classy!

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acnologia

function u(t) {

c.width=1920;for(i=0;i<1920/50;++i){for(j=0;j<c.height;j+=50){x.beginPath();x.arc(i*50,j,(S(i*t+j*t/100)+1)*9,0,Math.PI*2);x.fill();}}

Apr 14 2018 11:37 AM UTC

}// 134/140

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