Dweets awesomed by u/aliassheep

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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Exca

function u(t) {

c.width|=e=y=>x.fillRect(k,720-y,50,y<0?3:8)
for(i=32;i--;){w=S(i*C(t+i/7))*(32-i)
w*=w/2
while(w>0){x.fillStyle=R(w-=8)
k=i*60
e(w)
e(-w)}}

Jan 5 2018 2:05 PM UTC

}// 140/140

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Thanks for helping with the last few bytes go to poro

u/sigveseb

the reflections really make this one!
u/joeytwiddle

Very cool. Here is a retro-spect-rum: d/2411

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ellisk1

function u(t) {

for(c.width|=i=b=132;i--;)a=t+i,x.fillStyle=R(0,i%3*b,i%3*b+66,w=.5+C(a*=2)/3),x.fillRect(960+(X=600*T(t-i/42)),560+(b+X*X/4e3)*S(a),w*=b,w)

Jan 5 2018 3:03 AM UTC

}// 140/140

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u/sigveseb

This looks great!
u/Patrick

Virtual toothpaste.
u/vain

nice fx

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Zolden

function u(t) {

c.width|=0;for(k=0;k++<1999;){j=k%20;q=j*j;
i=k/20;p=255-q*j/30;x.fillStyle=R(p,p,p,1);x.fillRect((q+75)*i-q*(t+8)*3,q*2,q/2,j*40)}

Jan 2 2018 11:29 PM UTC

}// 131/140

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ellisk1

function u(t) {

d=t%1;x.fillStyle=R(t%6/6*(q=d*1e3),150-q,0,.5);x.beginPath();q+=(b=600);x.arc(b+q*C(a=6.3*Math.random()),b+q*S(a),b,e=3+a,e+.1+d);x.fill();

Jan 2 2018 10:27 PM UTC

}// 140/140

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The longer it has to fill in the better it looks!

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NoahPeeters

remix of d/5312 by u/Sapazu

function u(t) {

r=127.5;h=r+r*S(t/3);m=r+r*S(t/4);l=r+r*S(t/5);x.fillRect(800*S(t*2+t/25)+950,400*S(t*10+t/50)+560,100,100);x.fillStyle=R(h,l,m);

Jan 2 2018 10:18 PM UTC

}// 129/140

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NoahPeeters

function u(t) {

c.width=1920
for(i=0;i<1000;i++){l=i/30*10*S(t*10)*(t/3+0.5)*3
a=(i%30)*0.2094395067+t*t
x.fillRect(960+S(a)*l,540+C(a)*l,20,20)
}

Jan 2 2018 10:11 PM UTC

}// 130/140

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jbl

function u(t) {

c.width=i=2e3
while(--i)p=S(T=S(t/4)/12*i)*i,K=C(T/2)*i,x.fillStyle=R(k=99-i/9,k*2,k*3),x.fillRect(p+1e3,((C(T)+6)*i-p)/4,K/4+30,K/6+20)

Jan 2 2018 10:03 PM UTC

}// 136/140

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u/aliassheep

This would make a great intro sequence for an art or writing program or something

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Xen

remix of d/3167 by u/Xen

function u(t) {

for(i=c.width|=0;i--;x.fillRect(960+S(p=.9*i+S(t)*3e3/i*S(t))*(d=i*i/1e3)-i*C(t),540+C(p)*d-i*S(t),s,s))x.fillStyle=R(Z=t*i%255,s=i/5,255-Z)

Jan 2 2018 9:31 PM UTC

}// 140/140

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Show more comments…
u/jbl

WOW! 💯
u/lionleaf

Testing new links u/Xen
u/Xen

Yay! d/5309
u/donbright

i would have said this was impossible if i didnt see it
u/lionleaf

#alien #needle #color #floppy #rotation
u/sybarita

Yo what ... this is amazing
u/mrperson59

Is this what sleeping beauty pricked her finger on?

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magna

remix of d/5266 by u/Blane

function u(t) {

w=c.width|=0
for(i=h=w/2;i--;x.fillRect(h+h*(2e5-(b-539)**2)**.5/1e3*S(t+.9*i),b,d,d))b=i%w/.9,d=9*C(t/2+.45*i)

Jan 2 2018 4:19 PM UTC

}// 111/140

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u/Xen

golfed tiny bit more #5293
u/magna

You mean d/5293? ;)
u/magna

Oh that ? screws the link up. Has to be standalone: d/5293
u/f8f82804

#sphere

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hnen

function u(t) {

c.width=2e3;w=1e3;
for(i=1;i<w;i++){y=(i*i)%w-500;a=i%6.28+t;s=10*(2+C(a));x.fillRect(w+S(a)*Math.sqrt(25e4-y*y),60+1e3/2+y,s,s);}

Jan 2 2018 2:10 PM UTC

}// 131/140

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u/joeytwiddle

#sphere

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