Dweets awesomed by u/@noel

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: #Opposites

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tomxor

remix of d/27928 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𭀿𭰽𨰮𭱩𩁴𪀦👩🐱𜀳𝠸𞠨𨐽𜠬𨠽𜐬𫱮𫑯𭑳𩑭𫱶𩐽𩐽🡻𨐽𩐮𮀯𜰰𜀬𨠽𩐮𮐯𜰰𜁽𚐻𦀽𛐭𪐥𭰬𦐽𪐯𭰻𮀮𩡩𫁬𤡥𨱴𚁘𚱺𚡒𛁙𚱺𚡔𛁍𨑴𪀮𪁹𬁯𭀨𤠽𦀯𝠴𛑡𛁔👙𛰶𝀭𨠩𚰡𮠯𜠬𜐩𚑺🐨𭰫𦀯𜰭𦐯𜱞𦐯𜰫𦀯𜰩𙐲𜐾𜐸`.replace(/u../g,'')))

Jun 7 2023 12:50 AM UTC

}// 130/140

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#interactive (mouse) #PCB #trace #bumpmap

u/Joachim

Ooooh nice
u/joeytwiddle

I want left-click to add a blob of solder!
u/tomxor

Good idea!

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Xen

remix of d/27880 by u/rodrigo.siqueira

function u(t) {

w=c.width=128;for(i=1e4;i--;)x.fillStyle=R(x.fillRect(X=i%w,Y=i/w-5,Math.min(s=Math.hypot(i%2*30+X-80,Y-40)/9,(X^Y/w**T(t))%3),s),Y,Y/s*5)

Jun 6 2023 11:04 PM UTC

}// 138/140

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Deep blue See

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Xen

remix of d/27927 by u/danny@hille.dk

function u(t) {

for(c.width=i=w=235;i--;)for(j=144;j--;)x.fillRect(i,j,.3,(w*(S(a=Math.atan2(X=i/w-.5,Y=j/w-.3))/(d=(X*X/Y*Y*(t*w&i))**.5))^w*C(a)/d&w)/w*d)

Jun 6 2023 10:41 PM UTC

}// 140/140

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golf and play 2

u/cantelope

#glitch

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tomxor

function u(t) {

for(w=c.width&=i=10368;X=--i%w,Y=i/w;x.fillRect(X+z*R,Y+z*T,Math.hypot(R=X/64-1-S(t),T=Y/64-.6-C(t/3))+!z/2,1))z=(w+X/3-Y/3^Y/3+X/3)%21>18

Jun 6 2023 5:58 PM UTC

}// 138/140

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#PCB #trace #bumpmap

u/tomxor

Getting on the bump train with a different method. This one displaces X and Y in proportion to distance from light source, which creates pixel gaps on one side (specular highlights), and overlapping pixels on the opposite (becoming shadows).
u/danny@hille.dk

wow thats chrisp!

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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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rodrigo.siqueira

remix of d/27925 by u/KilledByAPixel

function u(t) {

c.width=355
for(i=w=127;i--;)for(j=200;j--;)x.fillRect(i+114,j,1,((w*(C(a=Math.atan2(X=i/w-.5,Y=j/w-.8))/Y/6+t)^w*(S(X+Y)/Y/6))&w)/w*C(a/t))

Jun 6 2023 3:16 PM UTC

}// 140/140

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The Tunnel #tunnel

u/tomxor

For some reason this reminds me of those weird halfpipe levels on sonic2 on the megadrive https://youtu.be/8cr1rqVcIhA?t=484

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KilledByAPixel

remix of d/27866 by u/@noel

function u(t) {

for(c.width=i=w=255;i--;)for(j=142;j--;)x.fillRect(i,j,1,((w*(C(a=Math.atan2(X=2*i/w-1,Y=2*j/w-.6))/(d=(X*X+Y*Y)**.5)+t)^w*(S(a)/d+t))&w)/w)

Jun 6 2023 5:16 AM UTC

}// 140/140

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Projection Faster and Uncompressed

u/@noel

I love this one and I follow the logic, until the z & w performing. I know it's a bitwise AND operation on z and w, but I don't actually grasp it.
u/@noel

I mean on this one: x.fillRect(i, j, 1, (z & w) / w)
u/joeytwiddle

Here (z & w) / w is the height of the rectangle. If that height is less than 1, then the canvas anti-aliasing renders a grey pixel, instead of a black one.
u/@noel

Thanks u/joeytwiddle Now I think I get it. (z & w) ensures that the value of z remains within the range of the canvas width 'w', and the dividing by w normalizes the height value. Great trick!

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rodrigo.siqueira

remix of d/27890 by u/rodrigo.siqueira

function u(t) {

for(c.width=j=w=255;j--;)for(i=y=j/w-.3;i++<w;x.fillRect(i,j,(z&w)/w,1))k=i/w-.5,d=y*y*9+k*k*9,z=w*C(a=Math.atan2(y,k)-t)/d+w^w*S(a+t)/d

Jun 5 2023 10:00 PM UTC

}// 136/140

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Even more golfed

u/cantelope

golfing intensifies!

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rodrigo.siqueira

remix of d/27876 by u/@noel

function u(t) {

for(j=w=255,c.width|=0;j--;)for(i=y=j/w-.5;i++<w;x.fillRect(5*i,j*4,5*(z&w)/w,5))k=i/w-.5,d=y*y+k*k,z=w*C(a=Math.atan2(y,k))/d+w|w*S(a+t)/d

Jun 5 2023 9:55 PM UTC

}// 139/140

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(not as good, but golfed #uncompressed)

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@noel

function u(t) {

eval(unescape(escape`󩭯󬬨󩼽󮌮󨽲󩝡󭍥󤭡󩍩󨝬󡽲󨝤󪝥󫭴󚍤󟜹󝜰󛍢󟜵󝌰󛌰󛍤󛍢󛍥󟜴󜬰󚜬󩽛󨜽󘭡󩍤󠽯󫍯󬭓󭍯󬌢󧜨󜌬󘬣󝍦󩬢󚜬󚍸󛭦󪝬󫍓󭍹󫍥󟝧󚝛󨝝󚌱󛌢󘼰󜌵󘬩󛍸󛭦󪝬󫍒󩝣󭌨󩜬󜌬󪌽󜜰󞌰󛍨󚜬󪜽󜽥󜼻󪜭󛜻󚝸󛭣󫍥󨝲󤭥󨽴󚍤󚽓󚍩󚽴󚜪󤼨󪜪󪜩󚭥󛍢󚽥󚭃󚍩󚭩󚜬󝜬󝜩`.replace(/u../g,'')))

Jun 4 2023 9:02 PM UTC

}// 140/140

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The Cristal Ball.

u/@noel

My dweet No. 3 Thanks to u/danny@hille.dk for actually teaching me how to start golfing!

dwitter.net | @noel (1997)