Dweets awesomed by u/lionleaf

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: #Food

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donbright

remix of d/1399 by u/Kalanchoe

function u(t) {

c.width^=0
t?o.push({X:1,Y:1,U:S(t),V:C(t)}):o=[]
o.map(a=>{Q=a.X**2+a.Y**2,a.X+=a.U-=a.X/Q,a.Y+=a.V-=a.Y/Q,x.fillRect(a.X,a.Y,9,9)})

Mar 28 2017 1:45 AM UTC

}// 133/140

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Another fake gravity sim. This time, some particles get slingshotted out of the system, past escape velocity, others teeter on the brink, and others congregate at 0,0. After a while, the screen is full of a bunch of particles leaving, and others coming back in towards the origin.

Show more comments…
u/nonce

your gravity sims are amazing.
u/z3vin

agreed
u/donbright

thanks this site is very inspiring
u/alien

WOW ,Hi what does this mean :D c.width^=0
u/donbright

alien it basically clears the screen to the default width. in detail, i think it is combining "binary xor" with "set equal to", so basically c.width = c.width xor 0, and since anything xored with 0 is itself, its basically setting c.width to itself.
u/donbright

#physics

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z3vin

remix of d/2322 by u/z3vin

function u(t) {

r=(n)=>Math.random()*n;h=w=1920;with(x)beginPath(),moveTo(0,0),lineTo(r(w),r(h)),strokeStyle='#fff',stroke(),fillRect(r(w),r(h*2.5),r(99),h)

Mar 27 2017 6:43 PM UTC

}// 140/140

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thanks @mxfh

u/donbright

never have i wished so much for a 'pause' function. cool pictures
u/z3vin

haha yes a lot of scenic moments in the city :) @donbright

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Lappi

function u(t) {

c.width=1920;x.font='9em a';
for(i=0;i<300;i++)
x.fillRect(i*5,S(i*5+t*i/200)*400+600,30,30),
x.fillText('🌈',i*5,S(i*5+t*i/200)*400+600);

Mar 26 2017 8:43 AM UTC

}// 139/140

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u/donbright

красава!
u/donbright

oops i think i mean красива

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cantelope

function u(t) {

c.width=1920;x.fillStyle="red";g=540;for(i=0;i<g;p=i-t,l=S(p)*i,Z=g-l*C(t),s=g*9/Z,x.fillRect(960+18/(Z*18)*l*S(t)*g,g+C(p)*i/Z*g,s,s),++i);

Mar 26 2017 2:54 AM UTC

}// 140/140

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u/innovati

it's like a sunflower pattern :D

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jick

function u(t) {

x.drawImage(c,C(t)*.2-2,S(t)*.2-2,1924,1084);
x.fillStyle=`hsl(${t*15},50%,50%)`
x.fillRect(940+S(t)*300,550+C(t)*290,20,20)

Mar 26 2017 2:02 AM UTC

}// 124/140

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u/donbright

great colors, really cool
u/Finianb1

This is such a trip

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nonce

function u(t) {

with(x)font='950px o',lineWidth=30,strokeStyle=`hsl(${t*50%360},99%,50%)`,setLineDash([9,3e3]),lineDashOffset=t*120,strokeText('I❤U',9,880);

Mar 25 2017 5:45 PM UTC

}// 140/140

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u/tapgiles

In Chrome, the text is too large, and the heart never shows up. Pretty awesome idea, though.
u/recursive

It shows perfectly for me in Chrome on Windows.
u/nonce

I so wish I could fix the font here. Sadly it has to go with whatever default font you have. If someone could golf this down by 4 chars we could do font='950px Arial'
u/New_Core

with(x)font='25cm Arial',lineWidth=30,strokeStyle=hsl(${t*50},99%,50%),setLineDash([9,3e3]),lineDashOffset=t*120,strokeText('I❤U',9,880);
u/joeytwiddle

#text

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z3vin

function u(t) {

r=(n)=>Math.random()*n;h=w=1920;c.style.transform=`scale(${r(.1)+1})`
for(i=0;i<9;i++)x.fillRect(0,r(h),w,3);x.clearRect(r(w),r(h),r(9),h)

Mar 24 2017 11:59 PM UTC

}// 138/140

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u/donbright

weird!
u/donbright

in a good way
u/z3vin

@donbright ha thanks!
u/katkip

#

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aemkei

remix of d/2238 by u/aemkei

function u(t) {

r=500;c.width^=0;for(I=F=2;F>-2;F-=1/2e3)x.fillRect(C(F)*S(L=F*r-t)*r+999,S(F)*r+520,W=(20&((S(I+=.25032)*50)*C(.1+I/1000)*.7))*C(L/2),W)

Mar 21 2017 10:36 PM UTC

}// 137/140

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the world …

u/sfz

you are a god.min.js
u/sigveseb

well done!
u/iverjo

#sphere #earth #globe
u/vain

What?? top ++++

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scottglz

remix of d/2194 by u/scottglz

function u(t) {

c.width=76;for(X=71;X--;)for(Y=40;Y--;x.fillRect(X,Y+S(X/9+7*t)+2,1,1))x.fillStyle=X<24&Y<20?Y%2|X-Y&3|!Y|!X?'#447':f:Y/3&1?f='#ddd':'#b23'

Mar 21 2017 8:19 PM UTC

}// 139/140

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u/sfz

awesome!
u/joeytwiddle

#flag

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aemkei

remix of d/1231 by u/iverjo

function u(t) {

c.width^=0;for(i=9;i<2e3;i+=2)s=(9/(9-(t/2+i/99)%9))**1.6,x.beginPath(),j=i*7+S(i),x.lineWidth=s/5,x.arc(960,540,s,j,j+.02),x.stroke()

Mar 21 2017 10:57 AM UTC

}// 134/140

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Star Field

u/iverjo

#starfield #stars

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