Dweets by u/magna

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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magna

function u(t) {

onmousemove=e=>{S=e}
w=c.width=320
for(j=14;j--;)for(i=8;i--;)'ŁŃŇŏşſƿȿşśűŰƠƠ'.charCodeAt(j)-w&1<<i&&x.fillRect(S.pageX+i,S.pageY+j,1,1)

Apr 28 2017 4:28 PM UTC

}// 136/140

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Retro mouse pointer

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magna

remix of d/2630 by u/magna

function u(t) {

for(i=c.width=w=192;i--;)for(j=w;j--;b=i%8^(X+Y&1^f)*7,'ĒőäƈÓäŉĊ'.charCodeAt(j&7)-w&1<<b^f<<b&&x.fillRect(i,j,1,1))X=i>>3,Y=j>>3,f=t*X/Y&1

Apr 28 2017 3:43 PM UTC

}// 138/140

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magna

remix of d/2622 by u/magna

function u(t) {

for(i=c.width=w=192;i--;)for(j=w;j--;b=i%8^(X+Y&1^f)*7,'ĒőäƈÓäŉĊ'.charCodeAt(j&7)-w&1<<b&&x.fillRect(i,j,1,1))X=i>>3,Y=j>>3,f=t*X/Y&1

Apr 28 2017 1:39 PM UTC

}// 133/140

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magna

remix of d/2611 by u/magna

function u(t) {

for(i=c.width=w=192;i--;)for(j=w;j--;b=i%8^(X+Y&1^f)*7,'ưưƠƀÃÇÏÏ'.charCodeAt(j&7)-w&1<<b^f<<b&&x.fillRect(i,j,1,1))X=i>>3,Y=j>>3,f=t*X/Y&1

Apr 27 2017 4:38 PM UTC

}// 138/140

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Refactoring to make code more readable (!)

u/magna

#truchet

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magna

remix of d/2604 by u/magna

function u(t) {

for(i=c.width=w=192;i--;)for(j=w;j--;!!('ưưƠƀÃÇÏÏ'.charCodeAt(j&7^f*7)-w&1<<(i%8^(X+Y&1)*7))^f&&x.fillRect(i,j,1,1))X=i>>3,Y=j>>3,f=t*X/Y&1

Apr 26 2017 10:17 PM UTC

}// 139/140

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Filled truchet tiles, now animated thanks to shaving by @donbright

u/donbright

the thing that strikes me is the black and white balls never move, only their connections.... but it looks like the whole plane is aliv
u/magna

@donbright To achieve that: Starting with a single tile, every other tile is flipped on the X axis. And then to flip a tile, I need to both invert the tile's pixels and also to flip it on the Y axis. Lots of XOR was needed :)
u/sigveseb

Excellent
u/iverjo

#dots
u/magna

#truchet

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magna

remix of d/2597 by u/magna

function u(t) {

w=c.width=192;for(i=w;i--;)for(j=w;j--;!!('ưưƠƀÃÇÏÏ'.charCodeAt(j&7^f*7)-w&1<<(i%8^(X+Y&1)*7))^f&&x.fillRect(i,j,1,1))X=i>>3,Y=j>>3,f=X/Y&1

Apr 26 2017 6:57 PM UTC

}// 139/140

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Filled Truchet tiles

Show more comments…
u/magna

Change the f assignment at the end to f=t*X/Y&1 to animate. I couldn't shave another byte to fit that.
u/donbright

for(i=c.width=w=192;i--;)for(j=w;j--;!!('ưưƠƀÃÇÏÏ'.charCodeAt(j&7^f*7)-w&1<<(i%8^(X+Y&1)*7))^f&&x.fillRect(i,j,1,1))X=i>>3,Y=j>>3,f=t*X/Y&1
u/donbright

awesome job, love it
u/magna

@donbright Damn! How didn't I see that? :) Thanks, and thanks!
u/magna

https://www.dwitter.net/d/2604
u/magna

* https://www.dwitter.net/d/2611
u/magna

#truchet

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magna

remix of d/2592 by u/magna

function u(t) {

c.width|=0;for(i=3;i--;x.drawImage(stats.dom.children[i],0,0,T=80,40,i%2*960,(i>>1)*540,960,540))x.fillRect(S(t+i)*T+1440,C(t-i)*T+810,9,9)

Apr 26 2017 5:17 PM UTC

}// 139/140

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Split-screen (non-retina version)

u/magna

Retina version: https://www.dwitter.net/d/2599
u/magna

Oops. Retina version: https://www.dwitter.net/d/2592
u/Purpzie

wait WOAH how the heck

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magna

remix of d/2594 by u/magna

function u(t) {

w=c.width=192;for(i=w;i--;)for(j=108;j--;'PP`ĀCDHH'.charCodeAt(j&7^(t/w*X*Y&1)*7)-64&1<<(i%8^(X+Y&1)*7)&&x.fillRect(i,j,1,1))X=i>>3,Y=j>>3

Apr 26 2017 5:10 PM UTC

}// 138/140

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Truchet tiles #2

u/magna

@todo: filled version
u/magna

Filled version: https://www.dwitter.net/d/2604
u/iverjo

#dots
u/magna

#truchet
u/katkip

#tagfail

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magna

remix of d/2591 by u/magna

function u(t) {

c.width|0;for(i=0;i<24;i++)for(j=0;j<108;j++)for(k=0;k<8;k++)'PP`ĀCDHH'.charCodeAt(j&7)-64&1<<(k^(i&1)*7)&&x.fillRect((i*8+k)*10,j*10,10,10)

Apr 26 2017 3:30 PM UTC

}// 140/140

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Trying to get some Truchet tiles going. Couldn't fit a nicer tile alternation yet.

u/magna

Golfed, added alternation and animation! https://www.dwitter.net/d/2597

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magna

function u(t) {

c.width|=0;for(i=3;i--;x.drawImage(stats.dom.children[i],0,0,T=160,80,i%2*960,(i>>1)*540,960,540))x.fillRect(S(t+i)*T+1440,C(t-i)*T+810,9,9)

Apr 26 2017 2:24 PM UTC

}// 140/140

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Split screen

u/magna

Intended for retina displays (due to the scaling of the stats graphs)
u/magna

Non-retina version: https://www.dwitter.net/d/2599

dwitter.net | magna (4021)