Top dweets by u/SMON

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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SMON

remix of d/12066 by u/thorbear

function u(t) {

t?0:z=y=c=a=1.4,b=1.56,d=-6.56,x.globalAlpha=.01;
for(i=2e4;--i;)n=d*S(a*z)-S(b*y),y=c*C(a*z)+C(b*y),z=n,x.fillRect(z*125+950,y*200+500,4,4)

Feb 1 2019 1:48 PM UTC

}// 140/140

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Okay, now with the original parameters!

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SMON

remix of d/11577 by u/rodrigo.siqueira

function u(t) {

for(m=q=t*100|0,w=1;m-->q-400;r=m**.2*200,x.fill(x.arc(960+r*S(a=m**4),1e3+r*C(a)*.5,w,4,5)))x.beginPath(x.fillStyle=R((w=q-m)-100,w,w,.4))

Jun 3 2019 8:24 PM UTC

}// 139/140

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The Forest in the Crystal Ball

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SMON

remix of d/14412 by u/katkip

function u(t) {

throw "🌊".repeat((5000-5*t)%40) + "🐠" + "🌊".repeat(5*t%40)

Jun 3 2019 9:11 PM UTC

}// 58/140

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SMON

function u(t) {

w=1900
tp = 50*t
t = tp % 170;
x.fillStyle=R(255, tp*4 % 255, 0, 1);
r = t*100 % w;
d = t*100 / w;
x.fillRect(10+r,100*(d+1)+S(t)*50,50,50);

Jan 31 2019 12:06 PM UTC

}// 140/140

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My first thingy! Okay, it's awful but whatever! :)

u/lionleaf

Welcome! :D
u/Xen

everyone starts somewhere, welcome, take a look around

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SMON

function u(t) {

c.width=1920
for(i=0;i<200;i++){
for(j=-5;j<5;j++) {
z=S(2*t-i)
s=(z+1)*20-3*Math.abs(j)
x.fillRect(i*40,70*j+600+j*-0.2*S(-z)*100,s,s)
}
}

Jan 31 2019 6:44 PM UTC

}// 139/140

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I suck at this. :/

u/joeytwiddle

It's not bad. What you gonna do with that spare char?

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SMON

remix of d/12054 by u/23_Skidoo

function u(t) {

c.width|=0
x.globalAlpha=0.3
for(i=1e3;
i--;)
x.fillRect(950*(C(t*4+i*3)+1),520*(C(t*7-i*.77)+1),s=40,s)

Feb 1 2019 9:24 AM UTC

}// 104/140

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SMON

remix of d/12056 by u/SMON

function u(t) {

t?0:z=y=s=2e2,a=0.9,b=2.7,c=0.2,d=-3.2,x.globalAlpha=.01;
for(i=2e3;--i;)z=d*S(a*z)-S(b*y),y=c*C(a*z)+C(b*y),x.fillRect(z*s+900,y*s+500,4,4)

Feb 1 2019 7:34 AM UTC

}// 140/140

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Hm. Closer...

u/thorbear

you need to store the next x,y position update into variables xn,yn then assign after. Or. Just the x.
u/thorbear

made a remix: https://www.dwitter.net/d/12066
u/thorbear

#attractor
u/SMON

@thorbear: oh, really? I assumed the comma operator would take care of that!

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SMON

function u(t) {

t?0:z=y=1,s=2e2,c=a=1.4,b=1.56,d=-6.56,x.globalAlpha=.01;
for(i=2e3;--i;)
  z=d*S(a*z)-S(b*y),y=c*C(a*z)+C(b*y),x.fillRect(z*s,y*s+500,4,4)

Feb 1 2019 7:23 AM UTC

}// 139/140

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Okay, again. Why is this not a ring?

u/SMON

I copied the bottom of this http://paulbourke.net/fractals/peterdejong/
u/SMON

I mean, I like it, but it's not exactly what I was going for. ;)
u/thorbear

its not a ring because y uses the next z value, so you need to temporarily store z somewhere and assign it after the y update.

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SMON

function u(t) {

c.width=1920;
for(i=0;i<500;i++){
x.fillRect(i*10+S(t)*200,S(t)*200+500+S(i/100+175)*9*T(0.5*S((t+Math.random()*0.3)*3))*100,5,10)
}

Jan 31 2019 7:12 PM UTC

}// 132/140

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wheeeeee

You've reached the end.

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