Dweets awesomed by u/pythech

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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pythech

remix of d/8537 by u/pythech

function u(t) {

c.width|=0
with(x)for(i=2;i--;stroke())beginPath(lineWidth=i?350:240),strokeStyle=i?'#252':'#3a5',arc(900,550,320,z=i?t:-t,z-C(t)*1.5-2)

Jun 17 2018 7:36 PM UTC

}// 136/140

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Bugsy

function u(t) {

for(c.width|=r=999;--r;x.lineTo(960+C(r+t)*a,540+S(r+t)*a))a=r/2
x.stroke()

Jun 16 2018 4:32 PM UTC

}// 75/140

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The graph r=theta spinning around the origin. 65 characters to play with, so there's lots of remixing potential. Try messing around with the trig functions, it leads to some fun results

u/iverjo

Go fullscreen, stare at the center for 30 seconds, then look away from your screen (e.g. look at your keyboard). #opticalillusion
u/iverjo

#short

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leSchieber

function u(t) {

s=5;l=250;w=c.width=1920;h=c.height-l;r=1000;for(i=w/s;i--;){v=(t+i/w*s*r)%r;x.fillRect(w/r*v,(h/r*v+S(v*2*Math.PI)*100),s,300)}

Jun 16 2018 4:26 PM UTC

}// 128/140

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firegodjr

function u(t) {

F=a=>((p=1.62)**a-(-p)**-a)/2.2
with(x)for(c.width|=D=10,x.m=translate,m(8e2,9);D--;)arc(0,0,F(D+2)*9,0,p),m(0,F(D)*9),rotate(1.57),stroke()

Jun 16 2018 3:33 AM UTC

}// 140/140

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The first #fibonacci spiral to ever grace Dwitter! :D

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Bugsy

function u(t) {

n=0;for(c.height=i=1080;i--;n=540*(1+S(t)*T((i%3.14)+1.57))){x.fillRect(960+(S(i*t/99)*200/Math.cosh((n-540)/40)),n,8,8)}

Jun 16 2018 12:42 AM UTC

}// 121/140

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Protowalker

function u(t) {

c.width=500
for(i=0;i<10;i++){z=T(t*2+i/10);x.fillRect(250+(i%2?1:-1)*z*50,140+z*i*3,z*=10,z)}

Jun 15 2018 6:33 AM UTC

}// 94/140

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My first dweet! little 3D thingadoo in 94 characters.

u/lionleaf

Welcome! That's a great one! #first_dweet

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DataMeta

function u(t) {

c.width|=0;p=Math.PI;for(i=0;i<800;i++)x.fillRect((i*1.86+C(S(t+i/(p**p)))*p**p+192),(i-S(t+i)*S(t*1.618-i/(p**p/.618))*88+133),9,9)

Jun 15 2018 4:30 AM UTC

}// 132/140

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u/robbyg

Bingo! Dino DNA!
u/aleamb

love it!
u/lionleaf

Cool! #DNA
u/Galaxtone

well dna unraveled

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DataMeta

function u(t) {

c.width|=0;v=Math.abs;for(i=0;i<144;i++)x.ellipse(960+C(t)*64,b=540,b*.618*v(C(t-i)),b*v(S(C(t)+i)),C(S(i))-t+i,C(S(t)+t)-t,9-t);x.stroke();

Jun 14 2018 4:59 PM UTC

}// 140/140

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u/Xen

love it!

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jylikangas

function u(t) {

for(c.width=z=-4;z++;x.fill(new Path2D("M"+[i=d>30?d-30:1,j=i-1?30:d,i,-j,d,-d,d,d])))d=35/(2-t--%2),x.setTransform(z%3?-1:1,0,0,1,150,75)

Jun 14 2018 7:29 AM UTC

}// 138/140

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Endless double doors...

u/pythech

#path2d
u/zanella

*insert music theme for Get Smart here*
u/zanella

*insert music theme for Get Smart here*
u/zanella

(insert music theme for Get Smart here)
u/zanella

Sorry about the multiple comments, it wasn't posting when I clicked the button. :)

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robbyg

remix of d/8582 by u/robbyg

function u(t) {

t&&x.drawImage(c,0,3)
for(Z=i=360;i--;x.fillRect(i*18-C(t+t-S(i/9))*Z-Z,0,Z,3))x.fillStyle=`hsl(${(S(i/3+t)+9)*4},${z=25+i%55}%,${z*.8}%)`

Jun 13 2018 1:29 PM UTC

}// 138/140

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Dunes.

u/magna

I bet p01 will come and add a camel to this.
u/lionleaf

Wow, that's really nice! #dunes #sand #desert
u/zanella

But the function names are already in camel case. #rimshot
u/joeytwiddle

#landscape

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