Dweets awesomed by u/Piggo

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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Pascal

function u(t) {

for(c.width|=j=2;j--;x.stroke(),x.beginPath())for(i=w=1e3;i--;x.lineTo(500+z*j*16+w*j+w*2*C(a)/z,540+w/2*(S(i*5)+2*S(i*8))/z))z=S(a=i-t)-6

May 21 2021 10:10 PM UTC

}// 138/140

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#stereograph #d3 cross eye 3D object

u/rep_movsd

Beautiful
u/rep_movsd

Beautiful
u/rep_movsd

You can switch clockwise and anticlockwise rotation in your brain if you try hard
u/joeytwiddle

To tilt it downwards, change 540 to 540+99*S(a)

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tato

function u(t) {

//c.width=1920
for(i=0;i<1920;i++){
x.fillStyle=R(255*S(t*i/960), 255*C(t*i/480),255*S(t*4))
x.fillRect(i,540+540*C(t+S(i*4)), 8, 8)
}

May 21 2021 3:46 PM UTC

}// 134/140

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stripes

u/Xen

nice!

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tato

function u(t) {

for(i=0;i<960;i++){
x.fillStyle=R(255*S(i+t), 255*C(t),255*S(t))
x.fillRect(2*i,540+540*S(S(t)+(t+i/2)/2), 8, 8)
}

May 21 2021 3:21 PM UTC

}// 114/140

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hidden images

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miratcan

remix of d/22827 by u/miratcan

function u(t) {

for(i=0;i<19;i++)
x.fillRect(t*100-(i<<6),(i<<6)+S(1-t)*50,2,(S(t)+2)*8)

May 21 2021 8:44 AM UTC

}// 72/140

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Ink Land

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KilledByAPixel

remix of d/22784 by u/KilledByAPixel

function u(t) {

for(o='',i=99;i--;c.style.filter='invert(')o+=String.fromCharCode(55308,56320+1024*Math.random(x.font='3in"'))
x.fillText(o,-99,16500*t-39)

May 21 2021 3:39 AM UTC

}// 139/140

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Random Hieroglyph Wall

u/DaSpider

d/16502

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BackendForth

remix of d/22806 by u/BackendForth

function u(t) {

c.width|=0
for(a=1920;a-=192;)
for(b=1080;b-=108;)
{i=a,j=b
for(k=299;k--;){x.fillRect(i,j,2,2)
i+=S((j-540)*(h=S(t)/35))
j+=S((i-960)*h)}}

May 20 2021 5:13 PM UTC

}// 139/140

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Adjusting the zoom on a phase space

u/rep_movsd

Wow I had a very similar dweet when experimenting yesterday by sheer coincidence
u/BackendForth

Great minds think alike?
u/katkip

smooth
u/joeytwiddle

Nice novel style. #hiddengem

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BackendForth

remix of d/22808 by u/BackendForth

function u(t) {

v=Math.random
i=v()*2e3,j=v()*999,x.fillStyle=R(v()*256)
for(k=399;k--;){x.fillRect(i,j,3,3)
a=(i-960)/99
b=(j-540)/99
i+=S(a-b)
j+=S(b+a)}

May 18 2021 1:43 PM UTC

}// 139/140

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Pom-poms? Lint? Truffula trees?

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BackendForth

remix of d/22806 by u/BackendForth

function u(t) {

v=Math.random
i=v()*2e3,j=v()*999,x.fillStyle=R(v()*256)
for(k=399;k--;)x.fillRect(i,j,3,3),i+=S(a=(j-540)/50)+(b=(i-960)/450),j+=S(b*9)+a/9

May 18 2021 1:34 PM UTC

}// 140/140

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Locks of hair? Lava flows? Twizzlers?

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anotherkitten

function u(t) {

x.fillStyle='#0001'
x.fillRect(0,0,2e3,2e3)
for(a=2e3;a--;)x.clearRect((a*40+t*800+(F=C(t+a/7.64))*700)%1920,a-99+C(a*4)*40,3,-5)

May 14 2021 1:45 AM UTC

}// 129/140

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cylinders

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BackendForth

function u(t) {

v=Math.random
if(!t)m=v(),x.fillRect(0,0,a=1920,b=1080)
x.clearRect(v()*a,v()*b,8,8)
x.font=b+"px Arial"
x.fillText(m>.5?"Yes":"No",99,900)

May 14 2021 1:36 AM UTC

}// 139/140

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Concentrate on a yes or no question, and wait for the stars to align . . .

u/tomxor

Stellar Magic 8 ball

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