Dweets awesomed by u/gormisdomai

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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sigveseb

remix of d/1232 by u/iverjo

function u(t) {

c.width^=0;for(i=5e3;p=3*t+S(t/2)*i/3e3+i%4*2,i--;x.fillStyle='red')d=C(p)-S(p),d>0&&x.fillRect(960+199*S(p)+249*S(t+i/6e3),i/4-2,199*d,1/d)

Feb 24 2017 11:39 PM UTC

}// 140/140

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u/donbright

kind of looks like a straw!
u/sigveseb

#twister

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khalkeus

function u(t) {

w=960;h=540;c.width=w*2
for(i=0;i<99;i++){for(j=0;j<99;j++){
x.fillRect(S(i-j)*C(t+j)*w+w,S(i+j)*S(t+j)*h+h,5,2)}}

Feb 24 2017 10:38 PM UTC

}// 114/140

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u/Purpzie

Shaved off 12 characters: for(c.width|=a=0;a<9801;)x.fillRect(S((i=0|a++/99)-(j=a%99))*C(b=t+j)*960+960,S(i+j)*S(b)*540+540,5,2)

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khalkeus

function u(t) {

w=960;h=540;c.width=w*2
for(i=0;i<99;i++){
x.fillRect(C(i)*C(t)*w+w,S(i)*S(t)*h+h,9,9)
x.fillRect(S(i)*S(t)*w+w,C(i)*C(t)*h+h,9,9)}

Feb 24 2017 10:23 PM UTC

}// 131/140

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gormisdomai

remix of d/1189 by u/gormisdomai

function u(t) {

x.globalCompositeOperation='xor'
r=T(2*t)*900;if(r>5e3){X=r%1920;Y=r%1080}x.beginPath();x.arc(X,Y,r,0,7,0);x.lineWidth=9;x.stroke()

Feb 24 2017 10:19 PM UTC

}// 131/140

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u/iverjo

Whoa, this ends up looking like dense salt & pepper noise

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iverjo

remix of d/104 by u/iverjo

function u(t) {

c.width^=0;for(i=9;i<2e3;i+=2)s=3/(9.1-(t+i/99)%9),x.beginPath(),j=i*7+S(i*4+t+S(t)),x.lineWidth=s*s,x.arc(960,540,s*49,j,j+.6),x.stroke()

Feb 24 2017 6:47 PM UTC

}// 138/140

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Show more comments…
u/SpecialAgent

my hat goes off to you sir!
u/Kalanchoe

That's unbelievable
u/iverjo

Try this one in fullscreen for a more immersive experience
u/Niklas

impressive!
u/donbright

:)
u/aendrew

This is incredible.
u/vonzo

reminds me to Gescom <3
u/hvge

http://www.pouet.net/prod.php?which=3397 ❤️
u/badthai

How did you come up with this?
u/iverjo

@badthai: First I made a classic tunnel effect (like this: https://www.dwitter.net/d/205). Then I made several remixes of it by tweaking parameters. This was one of the results. See also https://www.dwitter.net/d/106
u/iverjo

#tunnel
u/vain

cool segmented tunnel fly

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gormisdomai

remix of d/1194 by u/gormisdomai

function u(t) {

c.width=1920;
for(i=0;i<50;i++)
x.fillRect(950+T(t+i)*900, 0, 20, 2000)
for(i=0;i<50;i++)
x.fillRect(0, 350+T(t+i)*900, 2000, 20)

Feb 24 2017 3:32 PM UTC

}// 129/140

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"Dislocation #4"

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vegolasse

function u(t) {

function a(r){x.arc(S(.3*r)*400,S(.5*r)*730,i,0,Math.PI*2);x.closePath()}c.width=1920;for(i=0;i<2600;i+=30){a(t*1);a(t*2)};x.fill("evenodd")

Feb 24 2017 3:27 PM UTC

}// 140/140

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u/donbright

now that is truly elegant and cool, brilliant use of fill

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shu

remix of d/1199 by u/shu

function u(t) {

c.style.background='#000';c.width=i=1920;for(x.fillStyle='#FFF';i;){x.beginPath();for(j=3;j--;i--)x.lineTo(i,T(i%99*i+t)*140+540);x.fill()}

Feb 24 2017 3:00 PM UTC

}// 139/140

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Sin City

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shu

function u(t) {

c.style.background='#000';c.width=i=1920;for(x.fillStyle='#0F0';i;){x.beginPath();for(j=3;j--;i--)x.lineTo(i,S(i%99*i+t)*540+540);x.fill()}

Feb 24 2017 2:59 PM UTC

}// 139/140

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Matrix Rain

u/iverjo

#matrix

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gormisdomai

remix of d/1192 by u/gormisdomai

function u(t) {

c.width=1920;
for(i=0;i<200;i++)
x.fillRect(950+T(t+i)*900, 0, 20, 2000)
for(i=0;i<200;i++)
x.fillRect(0, 350+T(t+i)*900, 2000, 20)

Feb 24 2017 2:33 PM UTC

}// 131/140

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"Dislocation #3"

u/katkip

#tagfail

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