Dweets by u/tactical_retard

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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tactical_retard

function u(t) {

c.width=t*100
s=256+(2**~~t)
for(i=s*s;i--;x.fillRect(X,Y,1,1)){
X=0|i/s
Y=i%s
d=(X*X+Y*Y)**.5
b=X*d&Y*d
x.fillStyle=R(b,b,b)
}

Aug 20 2021 2:16 AM UTC

}// 127/140

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warped #sierpinski

u/384.cz

amazing

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tactical_retard

remix of d/23602 by u/tactical_retard

function u(t) {

s=100
for(i=s*s;i--;x.fillRect(X,Y,1,1)){
X=0|i/s
Y=i%s
k=4e-10
b=(X/k*Y)*1/s*255+t/k
x.fillStyle=R(b,b,b)
}

Aug 19 2021 11:30 PM UTC

}// 108/140

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spirals. zoom in, i couldn't fit in a transform

u/tactical_retard

x.setTransform(c.width/s,0,0,c.height/s,0,0)
u/jellyedwards

c.width=200 does a similar job, good work!
u/KilledByAPixel

you could also do x.fillRect(X*9,Y*9,9,9)

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tactical_retard

function u(t) {

s=32
for(i=s*s;i--;)X=0|i/s,Y=i%s,b=(X&t*2^Y)*1/s*255,x.fillStyle=R(b,b,b),x.setTransform(c.width/s,0,0,c.height/s,0,0),x.fillRect(X,Y,1,1)

Aug 19 2021 10:39 PM UTC

}// 139/140

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enhance

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tactical_retard

remix of d/23593 by u/tactical_retard

function u(t) {

Y=60*t
for(X=w=h=2e3;X--;){
a=(X-1250)/(q=w/4)
b=(Y-q)/q
r=j=0
for(i=50;i--;)t=r,r=(t*t-j*j)+a,j=(2*t*j)+b;r*r+j*j<4&&x.fillRect(X,Y,1,1)}

Aug 19 2021 7:17 PM UTC

}// 138/140

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mandelbrot set

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tactical_retard

function u(t) {

Y=60*t
for(X=w=h=2e3;X--;){
a=(X-w/4)/(w/4)
b=(Y-h/4)/(h/4)
r=a
g=b
for(i=1e1;i--;)r=(r*r-g*g)+a,g=(2*r*g)+b,r*r+g*g<4||x.fillRect(X,Y,1,1)}

Aug 19 2021 6:29 PM UTC

}// 140/140

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got this while trying to make a mandelbrot set

u/tactical_retard

centered: a=(X-500-w/4)/(w/4)
u/tactical_retard

https://stackoverflow.com/questions/41079139…
u/tactical_retard

replace the comma before the distance check with a semicolon for speed
u/danny@hille.dk

It's the famous hairy balls fractal :-)

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tactical_retard

function u(t) {

c.width|=0
r=a=>Math.random()*a
for(i=0;i<5;i++)s=r(500),x.globalAlpha=r(1),x.font=s+"pt a",x.fillText("🤡",c.width/2-s/1.2,c.height/2+s/2)

Aug 18 2021 11:45 PM UTC

}// 138/140

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🤡

u/tactical_retard

test
u/tactical_retard

can replace r=a=>Math.random()*a with r=_=>Math.random(), s=r(500) with s=r()*500, and x.globalAlpha=r(1) with x.globalAlpha=r()
u/tactical_retard

131 c.width|=0 r=Math.random for(i=0;i<5;i++)s=r()*500,x.globalAlpha=r(),x.font=s+"pt a",x.fillText("🤡",c.width/2-s/1.2,c.height/2+s/2)

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tactical_retard

remix of d/23586 by u/tactical_retard

function u(t) {

c.width^=1000
w=250
h=250
for(i=0;i<900;i++){
a=S(i+(t/i));b=C(t-i)
x.fillRect((c.width/2)+a*w,(c.height/2)+b*h,10,10)
}

Aug 18 2021 10:13 PM UTC

}// 120/140

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XORing c.width with a large number creates a seizury doubling effect

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tactical_retard

function u(t) {

c.width|=0
w=250
h=250
for(i=0;i<900;i++){
a=S(i+(t/i));b=C(t-i)
x.fillRect((c.width/2)+a*w,(c.height/2)+b*h,10,10)
}

Aug 18 2021 10:08 PM UTC

}// 117/140

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ring

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tactical_retard

function u(t) {

a="";for(i=1;i<101;i++)s="",s=i%3!=0&&i%5!=0?i:s+=i%3?"":"Fizz",s+=i%5?"":"Buzz",a+=s+" ";throw a

Dec 5 2019 6:17 PM UTC

}// 97/140

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FizzBuzz

u/Xen

Nice!
u/pavel

69: for(n=s='';n++<100;s+=(n%5?f||n:f+'Buzz')+' ')f=n%3?'':'Fizz';throw s

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tactical_retard

function u(t) {

c.width=1920;x.font="400pt a";x.fillText("🔫",1350,875);for(i=250;i--;x.strokeStyle=R(0,0,255,t))x.arc(C(t*i)*1350,555,75,i,C(i));x.stroke()

Nov 20 2019 2:07 PM UTC

}// 139/140

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water gun

dwitter.net | tactical_retard (307)