Dweets by u/Jezza

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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Jezza

remix of d/13497 by u/Jezza

function u(t) {

c.width|=0;for(Y=1188;Y-=27;){x.moveTo(0,Y);for(X=1;X<13;X++)x.lineTo(X*160+(X&1?C(2*t+Y/108)*120:0)*(X&2?1:-1),Y-(X&1?108:0));x.stroke()}

Apr 27 2019 9:20 AM UTC

}// 138/140

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Tweak. (via https://old.reddit.com/r/generative/comments…)

u/aleamb

fucking awesome!
u/Purpzie

Shaved 10 characters but it's super laggy: for(c.width|=0,i=572;Y=(0|i/13)*27,X=(572-i)%13,i--;x.stroke())x.lineTo(X*160+(X&1?C(2*t+Y/108)*120:0)*(X&2?1:-1),Y-(X&1?108:0))
u/Purpzie

Less laggy version that's 4 characters shorter instead of 10: for(c.width|=0,Y=1188;x.moveTo(0,Y),Y-=27;x.stroke())for(X=0;X++<13;)x.lineTo(X*160+(X&1?C(2*t+Y/108)*120:0)*(X&2?1:-1),Y-(X&1?108:0))

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Jezza

function u(t) {

c.width|=0;for(Y=1188;Y-=54;){x.moveTo(0,Y);for(X=1;X<13;X++)x.lineTo(X*160+(X&1?C(3*t+Y/108)*120:0)*(X&2?1:-1),Y-(X&1?108:0));x.stroke()}

Apr 27 2019 9:18 AM UTC

}// 138/140

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From: https://old.reddit.com/r/generative/comments…

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Jezza

function u(t) {

for(c.width&=p=-4;p<4;p+=.075)for(q=-2;q<2;q+=.075)x.fillRect(960+p*270,540+q*270,C(p*p-q*q+p+t)*15,S(2*p*q+q+t)*15)

Apr 27 2019 1:43 AM UTC

}// 116/140

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Messing about with the mandelbrot z=z^2+c

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Jezza

remix of d/13473 by u/Jezza

function u(t) {

c.width|=X=Y=u=S(t)/9+.8
for(i=3e3;i--;x.fillRect(X*300+760,Y*300+600,2,2))T=.4-6/(1+X*X+Y*Y),Z=X,X=1+u*(Z*C(T)-Y*S(T)),Y=u*(Z*S(T)+Y*C(T))

Apr 26 2019 7:44 AM UTC

}// 140/140

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https://en.wikipedia.org/wiki/Ikeda_map u from .688 to .911

u/Xen

love it! i never got round to making one of these

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Jezza

function u(t) {

t||(X=Y=u=.9)
for(i=999;i--;)T=.4-6/(1+X*X+Y*Y),Z=X,X=1+u*(Z*C(T)-Y*S(T)),Y=u*(Z*S(T)+Y*C(T)),x.fillRect(X*500+600,Y*350+750,.9,.9)

Apr 26 2019 7:31 AM UTC

}// 132/140

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https://en.wikipedia.org/wiki/Ikeda_map

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Jezza

remix of d/13454 by u/Xen

function u(t) {

x.fillText(u,T(t)**t,t)

Apr 26 2019 3:56 AM UTC

}// 23/140

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23 bytes and very slow

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Jezza

remix of d/13451 by u/rodrigo.siqueira

function u(t) {

t||x.translate(960,540);if(t<6){
x.globalAlpha=.1
x.fillRect(-1,-540,2,1080)
x.rotate(Math.PI/2)
x.drawImage(c,0,0,1080,540)
}

Apr 26 2019 3:45 AM UTC

}// 126/140

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#dragoncurve

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Jezza

remix of d/13451 by u/rodrigo.siqueira

function u(t) {

t||x.translate(j=960,540);if(t<8){
x.globalAlpha=.1
x.fillRect(i=50,i,j,i)
x.fillStyle=R(99,t*i)
x.rotate(2.513274)
x.drawImage(c,i,i,j,j)
}

Apr 26 2019 3:19 AM UTC

}// 140/140

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A bit of colour!

u/joeytwiddle

#organic

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Jezza

function u(t) {

onmousedown=()=>{o=(A=new AudioContext()).createOscillator();o.connect(A.destination);onmouseup=()=>o.stop();o.start()}

Apr 25 2019 11:12 PM UTC

}// 119/140

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Make beeping noises! Step 1: Adjust your volume. Step 2: Click anywhere on the dweet window to practice your telegraph morse code skills.

u/Jezza

Props to KilledByAPixel. All I did was add the onmouseup event.

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Jezza

remix of d/13386 by u/KilledByAPixel

function u(t) {

for(c.width|=X=i=0;i++<255;x.fillStyle=R(i,255-i,255),x.fillRect(960+950*X,540+530*Y,10,10))Y=X,X=S(X+S(i)-t)

Apr 25 2019 7:03 AM UTC

}// 109/140

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