Top dweets by u/iverjo

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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iverjo

remix of d/387 by u/iverjo

function u(t) {

for(w=i=955;i--;)x.fillStyle=R(a=w*!i,a,a,.1+i),x.fillRect(!a*(w+w*S(d=i/42)*S(b=42*i+t)),!a*w*(C(d)+T(t/9+d)),s=18/(S(d)*S(b+4.7)+2)+8*a,s)

Aug 1 2016 12:54 AM UTC

}// 140/140

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iverjo

function u(t) {

for(i=2e3;i--;)x.fillStyle=R(a=255*!i,a,a,i/3e5),x.fillRect(!a*(956+968*S(i+t)),!a*(535+540*C(i/42)),c=9+8*a,c)

Jul 29 2016 4:19 PM UTC

}// 111/140

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Let's call this one "60s CRT TV". Wait around 20 seconds to let the effect converge.

u/iverjo

Featuring vignette and scanlines/pixelated grid
u/iverjo

#texture
u/iverjo

#waitforit

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iverjo

function u(t) {

w=c.width=300;x.fillRect(0,87,w,3);x.font='49px A';for(i=7;i--;)x.fillText(String.fromCharCode(55357,56989-(i?0:27)),310-t%4*210+i*46,90)

Jul 22 2016 8:54 PM UTC

}// 137/140

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Choo choo

u/sigveseb

Looks very different on different platforms, but hella creative! Nice ^^
u/iverjo

Yeah, it seems that it works correctly only in FF, Opera and Chrome on Windows. Thanks :)
u/iverjo

#train

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iverjo

remix of d/276 by u/iverjo

function u(t) {

c.width=500;x.translate(250,95);M=(3*S(t*2)-1)/2;for(j=66;j--;)x.translate(9,0),x.rotate(M*.1+(1-M)*((j+8)%21?0:2.1)),x.lineTo(0,0),x.fill()

Jul 21 2016 1:10 AM UTC

}// 140/140

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I name it "morphalicious" :P

u/iverjo

#morph

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iverjo

function u(t) {

c.width=500;x.translate(250,40);M=(1+S(t*2))/2;for(j=66;j--;)x.translate(9,0),x.rotate(M*.1+(1-M)*((j+6)%16?0:1.57)),x.lineTo(0,0),x.fill()

Jul 20 2016 11:31 PM UTC

}// 139/140

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#morhp

u/iverjo

I meant #morph

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iverjo

function u(t) {

X=960,Y=960-99*t,a=0,d=99;for(;t++<7;)x.beginPath(),x.moveTo(X,Y),X-=d*S(a),Y-=d*C(a),x.lineTo(X,Y),d*=.7,x.stroke(),a+=Math.random()-.5

Jul 16 2016 8:49 PM UTC

}// 136/140

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#tree #bush

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iverjo

remix of d/193 by u/lionleaf

function u(t) {

c.width=199;f=99;d=t%3;for(i=210;i--;)r=f*S(i*f)*(d-1),n=d<1&&4*S(t*i),x.fillRect(f+C(i)*r+n,f/2+S(i)*r,d,d)

Jun 25 2016 7:00 PM UTC

}// 108/140

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A remake of the intro of Stars and boxes https://github.com/iver56/abel-demo-14

u/iverjo

#explosion #fireworks

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iverjo

function u(t) {

w=c.width=64;for(i=-1;i++<2304;)X=i%w,Y=0|i/w,M=X-32,B=M+19*S(t),N=M+19*C(t),V=Y-16,1/(B*B+V*V+T(t)*9)+1/(N*N+V*V)>.01&&x.fillRect(X,Y,1,1)

Jun 5 2016 5:56 PM UTC

}// 139/140

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#metaballs

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iverjo

function u(t) {

w=c.width=64;for(i=-1;i++<2304;)X=i*t%w,Y=0|i/w,M=X-32,B=M+19*S(t*3),N=M+19*S(t*2.7),V=Y-14,1/(B*B+V*V)+1/(N*N+V*V)>.02&&x.fillRect(X,Y,1,1)

May 24 2016 6:38 PM UTC

}// 140/140

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u/lionleaf

Intense!
u/lionleaf

Sweet. A combination of #93 ( http://dweet.lionleaf.org/id/93?autoplay=1 ) and #143 ( http://dweet.lionleaf.org/id/143?autoplay=1 )?
u/lionleaf

(Yes. Linking to dweets from comments should be done in some clever way....)
u/iverjo

Yes, it's inspired by those two, but the half of the code is also based on http://dweet.lionleaf.org/id/80?autoplay=1
u/iverjo

#metaballs

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iverjo

function u(t) {

w=c.width=64;for(i=-1;i++<2304;)X=i%w,Y=0|i/w,G=C(.004*(X*(X-Y)+Y*Y*S(t))+t),x.fillStyle=R(99+99*G,79*S(G*G),199),x.fillRect(X,Y,1,1)

Jan 8 2016 1:16 AM UTC

}// 133/140

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#plasma

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