Dweets by u/danny@hille.dk

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: #ScaryMovies

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danny@hille.dk

function u(t) {

t||x.translate(1435,70,s=m=960,i=4);i>0&m>0?(x.strokeRect(n=-m/2,n,m,m),x.rotate(.0147),m-=9):x.translate(m=s,0,--i)

Sep 9 2023 10:16 AM UTC

}// 117/140

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fun with squares

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danny@hille.dk

remix of d/28166 by u/Xen

function u(t) {

for(X=c.width=99;X--;c.style.background='#f90')for(Y=64;Y--;)x.fillRect(X,Y,m=(X-49+S(t*2+Y/32+S(t*3+X/9))*16+Y-30)/16,m)

Jul 24 2023 5:51 PM UTC

}// 121/140

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quick play

u/Xen

nice!

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danny@hille.dk

function u(t) {

for(X=c.width=128;X--;)for(Y=72;Y--;)x.fillRect(X,Y,1,Math.hypot(X-64+S(t+Y/32+S(t+X/64))*16,Y-36+C(t+X/32*C(t+Y/16))*24)/16)

Jul 23 2023 11:27 AM UTC

}// 125/140

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lava lamp

u/joeytwiddle

#metaballs

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danny@hille.dk

remix of d/27939 by u/rodrigo.siqueira

function u(t) {

for(c.width=A=99;A;(X^R)%2?R+=.1:T++<64?x.fillRect(A,36+T/R-z+9/t,T/64+S(t*4-A/32),2):(u=--A/64-1,R=1,T=-64))X=R*u+t,z=X*35,z=(z-T^T+z)%9>5

Jun 7 2023 8:22 PM UTC

}// 139/140

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sine curves are awesome remix

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danny@hille.dk

remix of d/27931 by u/tomxor

function u(t) {

for(c.width=A=128;A;(X^R)%7>1?R+=.01:T++<72?x.fillRect(A-(T%7>3)*u*R,38-T/R,S(S(t*4-A/z)+t*9),1):(u=--A/56,R=2,T=-56))X=R*u+t*2,z=X+R*16

Jun 7 2023 3:39 PM UTC

}// 136/140

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sorry not sorry - glitchy remix

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danny@hille.dk

remix of d/27925 by u/KilledByAPixel

function u(t) {

for(c.width=i=w=255;i--;)for(j=144;j--;)x.fillRect(i,j,1,((w*(S(a=Math.atan2(X=i/w-.5,Y=j/w-.3))/(d=(X*X+Y*Y)**.5)+t)^w*C(a)/d)&w)/w*d)

Jun 6 2023 5:40 PM UTC

}// 135/140

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golf and play

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danny@hille.dk

remix of d/27874 by u/danny@hille.dk

function u(t) {

w=c.width=128;for(i=1e4;i--;)x.fillRect(X=i%w,Y=i/w|0,s=Math.hypot(X-64-C(t*1.5)*40,Y-36-S(t*2)*28)/w*((X^Y)%9&3)**2,s)

Jun 3 2023 7:41 PM UTC

}// 119/140

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Golfed + more complex pattern

u/danny@hille.dk

If you want to see something weird, plug this in: 'x.fillStyle=R(0,0,s*w)' after the ; in the for loop.
u/joeytwiddle

Very nice

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danny@hille.dk

remix of d/21523 by u/danny@hille.dk

function u(t) {

w=c.width=128;for(i=1e4;i--;)x.fillRect(X=i%w,Y=i/w|0,Math.min(s=Math.hypot(X-64-
C(t)*40,Y-36-S(t*1.2)*28)/16,.4/((X^Y)%7)),s)

Jun 2 2023 9:45 PM UTC

}// 127/140

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bump mapping remix

u/Joachim

Really nice #lighting
u/@noel

Beautiful. I need to dig into this, to understand how this actually works.
u/rodrigo.siqueira

Wow! Replace X^Y with X|Y to generate Sierpinski triangles. Replace Math.min with Math.max for a more dramatic effect. Remove |0 for improved golfing (a minimal visible effect on top alignment). Replace "t*1.2" with "C(i+t)*6" for the "water effect".
u/jellyedwards

Wow that's amazing!!

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danny@hille.dk

remix of d/27531 by u/tomxor

function u(t) {

w=c.width=240,x.fill(new Path2D(`m120 68h-9v0a5 3 0 015 3v13a32 32 0 01-12-60v0a38 37 0 0012 70v8l4 24`)),x.scale(-1,1),x.drawImage(c,-w,0)

May 24 2023 5:07 PM UTC

}// 140/140

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#uncompressed #quake

Show more comments…
u/vain

Is there any way or reference to learn to understand this source and its Path2D datas?
u/deobfuscate

Path2D is very similar to the line function in SVG data. If you made an SVG, added a line function with this data, you would get half of the logo.
u/deobfuscate

https://developer.mozilla.org/en-US/docs/Web…
u/tomxor

Yeah it's just svg path data, there's a bunch of different commands (single letters), followed by a number of numeric parameters. Spaces can be removed in a variety of places making legebility hard which might be confusing here, e.g if there is a sign e.g 1 -1 this can become 1-1, also parameters which are flags do not need delimiters since they always have length of 1, e.g the two flags of the arc command a 2 3 4 0 0 5 6 can become a 2 3 4 00 5 6, also commands do not need delimiters a2 3 4 00 5 6. The other golfing trick for paths is to figure out when relative vs absolute coordinates will result in shorter parameters (A is an arc with absolute coordinates, a is relative to the previous command position), you can alternate between absolute and relative commands.
u/tomxor

When I made this path, I split each command onto new lines, without messing with spacing. Then figured out the shortest possible parameters, and removed all possible spacing as a last step.
u/4ce

u/vain a you see it? you asked about Path2D ... i know good online app where can drawing and explored SVG path : (this not my , this link not be ads, i not know what will been if you open this} https://yqnn.github.io/svg-path-editor/ ~_^⠀GoodLuck!
u/danny@hille.dk

this is an ok editor : https://yqnn.github.io/svg-path-editor/
u/danny@hille.dk

woops:-)

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danny@hille.dk

remix of d/27369 by u/danny@hille.dk

function u(t) {

for(c.width|=i=48;i-->1;)for(j=26;j--;x.beginPath(x.fill()))x.arc(i*42,j*42,S(((j-i/2)^(j+i/2))+t)*11+11,0,7)

Apr 13 2023 3:41 PM UTC

}// 109/140

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bubble XOR remix

u/joeytwiddle

I am liking #pattern
u/joeytwiddle

Same code: https://tixy.land/?code=.5%2Bsin%28%28%28y-x…
u/joeytwiddle

Different code: https://tixy.land/?code=sin%28%28%28x*2-y%29…

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