Dweets awesomed by u/Xen

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: #Food

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f8f82804

remix of d/10479 by u/f8f82804

function u(t) {

for(w=c.width=594;w-=99;x.beginPath(x.stroke()))for(i=17;i--;)x.lineTo(297+w*S(p=1.57*(i-(i>>2))+t)/(Z=4+C(p)),99+.4*w*((i&4)+T(t+w))/Z)

Oct 15 2018 10:53 PM UTC

}// 136/140

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#d3 #perspective #cube #remix -- this alternative approach is more "correct" in drawing each cube once (and avoiding the moveTo/lineTo dance), but it actually loses the multiple-stroke effect that makes the outer cubes heavier

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pavel

function u(t) {

t||(i=a=n=0,j=1e3,f=n=>n&&f(n>>1)-n&1)
for(z=n<4e4&&44;z--;)f(n++)?x.fillRect(i-=.88*C(A=a*Math.PI),j+=.88*S(A),2,2,a+=1/3):a--

Oct 15 2018 9:39 PM UTC

}// 127/140

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Koch curve #fractal

u/pavel

This is a turtle graphic, the function f(n) implements the Thue–Morse sequence

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jbrewhaha

function u(t) {

c.width=1920
x.font=1+(Math.abs(S(t*0.25))*140)%140+"px Arial"
x.fillStyle=R(0,99,0);
x.fillText("🌿Smoke dweet everyday🌿",10,540)

Oct 15 2018 7:53 PM UTC

}// 129/140

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#smokedweeteveryday

u/katkip

Already

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Purpzie

function u(t) {

for(i=1920;i-=a=10;)x.fillStyle=R(r=S(t**5+i)<0?255:0,r,r),x.fillRect(i,0,a,a);x.drawImage(c,0,a)

Oct 15 2018 7:43 PM UTC

}// 97/140

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woven

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jbrewhaha

function u(t) {

s=150
f=255
for(i=0;i<1920/s;i++) {
 f=~f*S(t)
 for(j=0;j<1080/s;j++) {
  f=~f
  x.fillStyle=R(f,f,f);
  x.fillRect(s*i,s*j,s,s)
 }
}

Oct 15 2018 6:47 PM UTC

}// 133/140

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First dweet!

u/lionleaf

Nice one! Welcome :)
u/iverjo

Welcome

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ms.roboto

function u(t) {

w=1920;h=1080;if(T.call||T<h){S.call&&(S=Array(w).fill(0),S[w/2]=1,T=0);S=S.map((_,j)=>(n=S[j-1]^S[j+1],n&&x.fillRect(j,T,2,2),n));T++}

Oct 15 2018 6:24 PM UTC

}// 135/140

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Rule 90

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pavel

remix of d/10356 by u/pavel

function u(t) {

for(x.fillRect(0,0,X=w=c.width=600,w);X-=6;)for(r=X**2.3%w,Y=h=r*t&504;Y;x.fillText(r*Y&1,X,Y-=8))x.fillStyle=R(b=Y-h||w,250+Y-h,b)

Oct 15 2018 12:05 AM UTC

}// 131/140

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#matrix #rain v3 shorter, faster, and with variable speed droplets

u/joeytwiddle

Let the white burn briefly: b=250+(Y-h)*6

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116

remix of d/10432 by u/116

function u(t) {

T=t/3
s=192
c.width^=0
for(j=99;j--;)
for(i=99;i--;)
x.fillRect(
s*(j+S(-T)*(i%4==1)/4+S(T)*(i%4==3)/4-1-(i%2)),
i*s/2,
s/2-4,s/2-4
)

Oct 14 2018 4:37 PM UTC

}// 134/140

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Parallels too?

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116

remix of d/10429 by u/116

function u(t) {

a=A=(t)%3-2
b=B=(t/96)%2-1
for(i=255;i--&&a*a+b*b<9;){t=a*a-b*b+A;b=2*a*b+B;a=t}
x.fillStyle=R(i)
x.fillRect(1280+A*640,540+B*540,20,20)

Oct 14 2018 3:00 PM UTC

}// 136/140

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Scanline Mandelbrot

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prplz

remix of d/10375 by u/akx

function u(t) {

for(y=c.height|=0;y-=5;)for(i=9;i--;x.fillRect(99*i-420,0,y/20+10,y/200))x.setTransform(3**(y/999),0,0,1,960+99*S(3*t-y/66),y)

Oct 14 2018 8:34 AM UTC

}// 126/140

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