Dweets awesomed by u/3bl3gamer

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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New_Core

function u(t) {

x.fillStyle=R(b=2e3,b,b,0.1);x.fillRect(0,0,b,b);x.beginPath();for(i=b;i--;)x.lineTo(i/2*C(t)+i*S(g=t+i)+960,i/4*S(t)+i*C(g)+540);x.stroke()

Aug 21 2016 3:10 PM UTC

}// 140/140

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Show more comments…
u/iverjo

Dat tunl!
u/New_Core

maybe its a spinning chinese hat from top
u/iverjo

You're right, I can trick my brain into beliving that. Funky! It's like one of those illutions where you see different things based on how you look at it/think of it
u/iverjo

*believing
u/iverjo

Dwitter really needs an "edit comment" feature :P
u/lionleaf

Wow!!
u/giel

Nice!
u/lionleaf

#rotation #hat #in_or_out #lighting
u/joeytwiddle

#shiny
u/vain

Wow! Very nice!

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New_Core

function u(t) {

c.width=1e3;x.translate(500,440);x.scale(C(t),1);for(i=10;i--;)x.fillStyle=(R(0,200-i*18)),x.font=500+"px s",x.fillText("☠",4*i*S(t)-250,0);

Aug 18 2016 4:59 PM UTC

}// 140/140

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u/iverjo

Cool, that almost looks like 3D!
u/lionleaf

This doesn't work on my Macbook with chrome for some reason.
u/New_Core

can it be the translation? if you put 0 in last number of translation and set the last number in code to 500, do you see something then,, or remove the translation and keep the 500 at the end of code,
u/lionleaf

Turns out any font size above 250 doesn't show up. 250 works fine though. Nice effect!
u/New_Core

ah ok

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lionleaf

remix of d/421 by u/lionleaf

function u(t) {

c.width=2e3;x.font='99px Arial';v='Write long then shorten!';for(i=v.length;i--;)x.fillText(v[i],i*79+S(t+i)*10,540+S(t*9+i)*20)

Aug 17 2016 5:49 PM UTC

}// 128/140

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You can now enter more than 140 characters while writing a dweet! (But you can't post anything longer than 140 characters)

Show more comments…
u/iverjo

Sweet :) I remember removing maxlength=140 in my dev console when creating dweets at arkt.is/t/ ^^
u/PhiLho

Yes, that's what I did here as well... :-D Ah, except I get an alert dialog on each character beyond 140! Not very practical to type. The red counter should be enough...
u/PhiLho

And apparently we can now safely replace semi-colon with newline, even on Windows! (they counted as two chars, previously...)
u/iverjo

Yes, that alert should be removed. Luckily, one can suppress it in FireFox by checking the checkbox inside the alert
u/lionleaf

Ooops, I never got the alert for some reason. And I didn't see this before now. Should be fixed now.
u/lionleaf

#feature

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New_Core

function u(t) {

a=c.width=2e3;for(i=160;i--;)j=i%20,x.fillStyle=R(200-i),x.beginPath(),x.arc(i/3+820*S(t*2+j/6)+1e3,500+i/3-320*C(t*2+j/2),i,0,7),x.fill()

Aug 14 2016 9:26 AM UTC

}// 138/140

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u/Pontso

That is brilliant!
u/iverjo

Good idea!
u/sigveseb

very nice!
u/13thptr

#balls

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iverjo

remix of d/413 by u/iverjo

function u(t) {

c.width=1e3;for(i=151;i--;)v=t-i/9,x.fillStyle='red',x.font=12+i+C(v*19-8)/(v*v)+'px A',v>0&&x.fillText((''+u)[i],490+i*5*S(v),280+i*2*C(v))

Aug 11 2016 12:13 PM UTC

}// 140/140

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u/katkip

awesome

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iverjo

remix of d/40 by u/iverjo

function u(t) {

c.width=1e3;for(i=60;i--;)v=t-i/9,x.fillStyle='pink',x.font=20+i+C(v*19-8)/(v*v)+'px A',v>0&&x.fillText('❤',490+i*9*S(i),260+i*9*C(i))

Aug 10 2016 1:21 PM UTC

}// 134/140

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#hearts

u/PiggyClone205

lovely

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sigveseb

remix of d/297 by u/sigveseb

function u(t) {

w=c.width=128;for(i=1e4;a=i%w,b=i>>7,m=a-64+S(t*3)*32,n=b-36,i--;V=((a^(b+49*t))%(2+t/2|0))/l*w,x.fillRect(a,b,V>1?1:V,1))l=m*m+n*n

Aug 9 2016 10:02 AM UTC

}// 131/140

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scene change every 2 seconds

Show more comments…
u/iverjo

Wow, cool!
u/donbright

incredible
u/joeytwiddle

Wow :-O Like looking through frosted glass.
u/joeytwiddle

#texture #shiny
u/Galaxtone

more like 10 seconds
u/Galaxtone

ok nvm it's 5
u/Galaxtone

oh crap I forgot it's relative to my browser speed
u/joeytwiddle

#hiddengem
u/Odog8

ooga booga

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sigveseb

function u(t) {

c.style.margin='-99px 0';for(i=c.width=256,x.font='32pt a',x.fillText(u,0,32);i--;)x.drawImage(c,i+(a=4*C(i/9+t*9)),0,1,64,i,80-a,1,99)

Aug 8 2016 5:34 PM UTC

}// 135/140

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off-screen rendering step :P

u/iverjo

See the off-screen part by replacing -99px with 0

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sigveseb

function u(t) {

for(n=c.width=i=1e3,s=S(t),k=C(t);i--;x.lineTo(n*X/Z,n*Y/Z))F=S(i),U=C(i),V=(i&7)-3,_=V*s+F*k,Z=V*k-F*s+15,X=_*k-U*s+7,Y=_*s+U*k+3;x.fill()

Aug 8 2016 1:32 AM UTC

}// 139/140

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two-axis rotation

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u/sigveseb

and a quasi-reflective material
u/iverjo

Wicked!
u/iverjo

Btw, this is really slow in FF (~1 FPS) but fast in Chrome (looks like 60 FPS)
u/sigveseb

typical :P
u/3bl3gamer

FF, 30-50 fps
u/p01

Witchcraft!

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sigveseb

remix of d/405 by u/sigveseb

function u(t) {

for(n=c.width=i=2e3;i--;x.lineTo(1e3+n*X/Z,560+n*U/Z))F=S(i),U=C(i),V=i%5-2,Z=V*C(t)-F*S(t)+12+9*S(t/2),X=V*S(t)+F*C(t);x.stroke()

Aug 7 2016 2:04 AM UTC

}// 130/140

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u/iverjo

Very impressive!

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