Dweets awesomed by u/jick

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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5Mixer

function u(t) {

w=1920
for(i=0;i<99;i++){a=Math.random()*w
b=Math.random()*w/2
x.fillStyle=R(a/w*256,b/w*256,S(t)*100)
x.fillRect(a,b,100,100)}

Mar 29 2017 11:36 PM UTC

}// 127/140

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u/cantelope

cool. gradients
u/donbright

love this roughness
u/5Mixer

Cheers :)

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cantelope

function u(t) {

x.save(),x.translate(960,540);for(i=99;i--;a=i*10,x.fillStyle=`hsl(${i*4-t*99},99%,50%`,x.fillRect(-a,-a,a*2,a*2),x.rotate(.02));x.restore()

Mar 28 2017 4:27 AM UTC

}// 140/140

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some color to brighten up the place

u/nonce

love it, I have been playing with tunnels that you are backing out of all day it is refreshing to see on go the other way
u/sfz

Wow, you get some cool patterns if you change the .02 to .1 thru .9
u/donbright

beautiful

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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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jick

remix of d/2307 by u/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)*200,550+C(t)*190,20,20)

Mar 26 2017 2:05 AM UTC

}// 124/140

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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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donbright

remix of d/2298 by u/keithclark

function u(t) {

for(a=c.width^=0;d=C(--a+t)*S(b=a/t/t),e=T(a+t)*S(b);x.fillRect(d*h+960,C(b)*h+540,i=h/40-5,i))h=900/(2-e),x.fillStyle=R(a,h/a,(h/b)%256);

Mar 26 2017 1:25 AM UTC

}// 139/140

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this dweet is dedicated to Lynda Obst, a producer of Interstellar

u/tapgiles

Would love to see a slowed-down version of this...
u/donbright

unfortunately i dont understand it enough to make an easy slowdown! divding t by a number is not enough

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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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donbright

remix of d/2238 by u/aemkei

function u(t) {

r=500;c.width^=0;
t?φ.push(t):φ=[]
φ.map(φ=>{
x.fillStyle='hsl('+r*C((λ=φ*r)/2)+',99%,50%)'
x.fillRect(C(φ)*S(λ+t)*r+999,S(φ)*r+r,9,9);
})

Mar 21 2017 10:52 PM UTC

}// 138/140

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progressive trance planet

u/sfz

Morten Granau works love it

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