Dweets awesomed by u/ellisk1

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: #ScaryMovies

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KilledByAPixel

remix of d/13416 by u/KilledByAPixel

function u(t) {

for(i=F=2e3;i--;x.fillRect(i,Y,2,99))k=S(i)**2+1,Y=k*(1e9+t*1e3)%F-1199+99/t,x.fillStyle=R(z=i%2?(999-i)**2+(500-Y)**2<6e4?F:0:99,z,z+30,.5)

Apr 23 2019 7:01 PM UTC

}// 140/140

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The moon shines bright through the rain tonight.

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rodrigo.siqueira

remix of d/13410 by u/katkip

function u(t) {

if(t<2){x.globalAlpha=.7
x.fillRect(0,0,1,1)
x.rotate(Math.PI*.8)
x.translate(-450,-700)
x.drawImage(c,0,0,1e3,1e3)
x.translate(-900,-310)}

Apr 23 2019 2:52 PM UTC

}// 139/140

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Starfield #fractal

u/katkip

Nice
u/sigveseb

Pretty af
u/Purpzie

Shortened by 5 characters: if(t<2)with(x)globalAlpha=.7,fillRect(0,0,1,1),rotate(Math.PI*.8),translate(-450,-700),drawImage(c,0,0,1e3,1e3),translate(-900,-310)

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SuperMayo

function u(t) {

r=Math.random;for(i=1;i<200;i++)x.fillRect(900+C(r()+t)*1000,r()*1200,r()*100,2),x.fillStyle=R(125+125*S(t),125-125*C(t*r()),125+125*C(t))

Apr 17 2019 1:31 PM UTC

}// 138/140

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My first dwitt !

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pavel

remix of d/12115 by u/pavel

function u(t) {

for(i=c.width|=h=1065/226;q=--i%3-1,a=q?i:i*h+h/2;x.fillRect(960+S(a+t)*800/r/z,540+(q||T(i))*800/z,s=70/z/z,s))r=S(a%h),z=4+C(a+t)/r,z*=z>1

Apr 16 2019 5:01 PM UTC

}// 140/140

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#d3 #cube #perspective #wireframe

u/pavel

#uncompressed
u/KilledByAPixel

rad

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KilledByAPixel

function u(t) {

for(i=0;i<3e3;)x.fillStyle=R(i%1e3,i%250,i%150,.3+i),j=t*i/9,x.fillRect((S(i)*2e5-j)%2e3-9,(S(i*i)*2e5+j/2)%1080-9,Z=i++?3+9*S(i)**30:1e5,Z)

Apr 13 2019 2:56 AM UTC

}// 140/140

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2D #Starfield I squeezed in more colors and motion blur.

u/13thptr

stylish
u/iverjo

Meteor rain!

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KilledByAPixel

function u(t) {

for(i=999;i--;)X=Y=Z=M=N=467,M-=i-N,Z*=N/M,X*=T(Y+Z),N^=~(X-i),Y*=T(X*-92),x.fillStyle=R(M,N,N,1),x.fillRect(876+.4*Y,650-.1*X,.06*Z,.06*Z)

Apr 10 2019 12:47 AM UTC

}// 139/140

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Current Best (1907 Bad / 145 Good) Im going to 2k bad

u/magna

Pretty!
u/joeytwiddle

Cloud city?
u/DataMeta

Mirror's Edge?

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pavel

function u(t) {

for(c.width|=k=0;k<50*t;x.ellipse(960,540-750*(i%2-.5)*y,r=400*(1-y*y)**.5,r/3,0,a=(2*i+k++%2-t)%16*.393,a))i=k/98|0,y=k%98/49-1
x.stroke()

Apr 9 2019 12:06 AM UTC

}// 139/140

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Single stroke beach ball sketch

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spaceman_blanc

remix of d/5603 by u/Xen

function u(t) {

t?x.fillStyle=`hsla(${t*Z*30},69%,65%,1)`:x.translate(950,Z=540)
for(i=199;i--;x.rotate(t/(Z-i)))x.fillRect(i*8-1e3,-1e3,2,1e3)

Mar 4 2019 9:50 PM UTC

}// 127/140

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Sickly spirals

u/Xen

Nice one
u/aleamb

cool

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rodrigo.siqueira

function u(t) {

c.width|=σ=(X)=>{return 1/(1+Math.pow(Math.E,-X))}
for(i=-500;i<500;i++)
x.fillRect(i+950,820-σ(i/30*C(t*2)+Math.random()*2)*400,5,5)

Mar 4 2019 8:41 PM UTC

}// 133/140

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Sigmoid activation function used in Artificial Neural Networks. Animation shows changes of neural weights plus a random bias.

u/pavel

I often use sigmoids for movement. The ease-out / ease-in looks great. I used 1/(1+1e9**(.5-t%1)) in d/11146 for the 'jumps'.
u/katkip

#sigmoid #math
u/katkip

also #ai
u/rodrigo.siqueira

also #neural

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pavel

function u(t) {

for(k=2e3;i=S(t+k),j=S(i*k--);f&&x.fillRect(960+540*i,540*++j,9,4))d=1-i*i-j*j,f=d**.5*2-i-j,x.fillStyle=R(g=8*f**3,g,g+28*f,1-.05/d)

Feb 28 2019 7:26 PM UTC

}// 133/140

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