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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gormisdomai

remix of d/1311 by u/gormisdomai

function u(t) {

c.width^=0;
for(s=0;s<200;s+=.01){
X = (T(t)*s+7)*C(s+t)
Y = (C(t)*s+7)*S(s+t)
x.fillStyle=R(99^s,s,s)
x.fillRect(960+X*30, 540+30*Y, X, Y)}

Feb 25 2017 2:44 PM UTC

}// 140/140

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"Space Folding #2"

u/katkip

#tagfail

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gormisdomai

function u(t) {

c.width=1920;
for(s=0;s<2000;s+=.1){
X = (0.1*T(t)*s+10)*C(s+t)
Y = (0.1*C(0.5*t)*s+10)*.8*S(s+t)
x.fillRect(960+X*30+t, 540+30*Y+t, X, Y)}

Feb 25 2017 2:12 PM UTC

}// 139/140

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"Space Folding #1"

u/Kalanchoe

amazing!
u/iverjo

+1 for the unexpected implosion

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iverjo

remix of d/1278 by u/iverjo

function u(t) {

c.width^=0;for(i=5e3;i--;)d=C(p=t+i/3e3+i%4/.637)-S(p),x.fillStyle=R(a=74*d+74,i/t),d>0&&x.fillRect(960+199*S(p)+400*S(t+i/6e3),i/4,199*d,1)

Feb 25 2017 12:55 PM UTC

}// 140/140

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As suggested by donbright

u/iverjo

#twister

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5Mixer

function u(t) {

w=c.width=2e3
k=['╚','╔ 	','╝','╗']
x.font="50pt o"
for(n=0;n<800;n++){a=n/20
a-=a%1
x.fillText(k[(a%2*2+n%40+1)%4],(t*99+a*50)%w,n%20*50)}

Feb 25 2017 12:43 PM UTC

}// 139/140

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Wanted to see if I could use the box ascii characters for something. Drawing text takes up a lot of characters, but it turned out okay :D As a bonus, removing the '+1' on the final line makes the pattern squares!

u/5Mixer

Edit: Nope. Some golfing apparently means that isn't true anymore lol.
u/Xen

w=c.width=2e3,x.font="40pt'";for(n=369;n--;)x.fillText(['╚','╔','╝','╗'][(n/20|0%4*3+n%40)%4],(n*t*t)%w,n%20*50)

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walsh9

function u(t) {

T=t*60|0,d=T%64*33,e=(T>>6)*36,s=d<1||Math.random()>.5&&e>1,f=s?8:33,g=s?36:8,x.fillRect(d,e,f,g),x.lineWidth=16,x.strokeRect(0,0,1920,1080)

Feb 25 2017 8:04 AM UTC

}// 140/140

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u/donbright

hey that is super cool
u/sigveseb

reminds me of the old C64 BASIC maze: http://www.slate.com/content/dam/slate/artic…
u/walsh9

I'm using this 'binary tree' maze algorithm: http://weblog.jamisbuck.org/2011/2/1/maze-ge…

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hamptonio

function u(t) {

c.width=1920;for(i=0;i<t;i+=.005){x.lineTo(960+300*(2+C(3*(i+t)))*C(i+t+S(i*t)),540+180*(2+S(3*(i+t)+S(i)))*C(i+t+S(t)+S(i)));};x.stroke()

Feb 25 2017 5:18 AM UTC

}// 138/140

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iverjo

remix of d/75 by u/iverjo

function u(t) {

/* LOOK MA, I HAVE ENOUGH SPACE FOR A VEEERY LONG COMMENT! */
c.width^=0;for(i=24;i--;)x.fillRect(960+22*i*C(a=t*i/8),520+22*i*S(a),2*i,2*i)

Feb 25 2017 1:36 AM UTC

}// 140/140

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u/gormisdomai

This is so pleasing to watch!
u/iverjo

My comment is yuge. It is the largest ever. People love it bigly.
u/sigveseb

lol that comment tho
u/iverjo

Golfed: /* LOOK MA, I HAVE ENOUGH SPACE FOR A VEEERY LONG COMMENT! */ for(c.width+=i=0;i<48;i+=2)x.fillRect(960+11*i*C(a=t*i/16),520+11*i*S(a),i,i)
u/AstonC

Tremendous!
u/iverjo

#spiral

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hamptonio

remix of d/1203 by u/vegolasse

function u(t) {

q=43;function a(r){x.arc(q+S(r/3)*400,q+S(r/2)*730,i,0,6.283);x.closePath()}c.width=q*q;for(i=0;i<q*q;i+=9){a(t);a(S(t))};x.fill("evenodd")

Feb 25 2017 1:10 AM UTC

}// 140/140

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seems like that evenodd method could do some other cool shit

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gormisdomai

function u(t) {

c.width=999
w=20
for(X=-6;X<7;X++)
for(Y=-6;Y<7;Y++){
x.beginPath();x.arc((X+S(t)*Y%7)*w+450,(Y+C(t)*X%7)*w+260,w,0,7,0);x.stroke()}

Feb 25 2017 1:05 AM UTC

}// 133/140

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u/iverjo

Cool, it almost looks like 3D
u/gormisdomai

You're right, maybe I should not try to make one which actually does the 3D rotation calculations

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khalkeus

function u(t) {

w=960;h=500;c.width=w*2;
for(i=0;i<w*2/9;i++)
for(j=0;j<1;j++){{z=C((i-j)-t)*255;x.fillStyle=R(z,z,z);x.fillRect(i*9,S(t+i)*w/4+h,9,9)}}

Feb 25 2017 12:00 AM UTC

}// 136/140

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