Dweets awesomed by u/shilquix

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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donbright

remix of d/3604 by u/Xen

function u(t) {

c.width=2e3;帧=frame/9;for(i=-帧;i<=帧;i+=9)for(j=-帧;j<=帧;j+=9)红=i*i-j*j,蓝=i*i+j*j,半=960,x.moveTo(半+i,j),x.lineTo(半+半*红/蓝,半*i*j*2/蓝);x.stroke()

Dec 6 2017 5:01 AM UTC

}// 140/140

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harmony of 9

u/donbright

interesting fact: there are no curved lines, they are all straight. and there are no trig functions.
u/Xen

love it :-)

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donbright

remix of d/2562 by u/hscells

function u(t) {

t?c.width=w:(k=1,w=1980,f=w/2)
onmousemove=e=>k=e.pageX/94+e.pageY/942
for(i=f;i>0;i-=k)x.lineTo(w/2+S(i+t/5)*f,540+S(i*5)*f/2)
x.stroke()

Apr 23 2017 12:37 PM UTC

}// 138/140

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move mouse left-right = coarse adjustment. move mouse up-down = fine adjustment

Show more comments…
u/donbright

challenge - can you find the tuning for a single, rotating parallelogram?
u/hscells

nice use of the mouse!
u/magna

SICK!
u/z3vin

Man, I thought it was cool even before I realized the mouse interactions!
u/donbright

well the default is just stealing from @hscells
u/Xen

thats sexy!
u/Xen

thats sexy!
u/donbright

thx
u/gabrielsroka

#interactive

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donbright

remix of d/1969 by u/jes5199

function u(t) {

c.width=2e3;g=new Float32Array(1);for(a=192;a;a--)for(b=99;b;b--){C=(a-96)*t;d=(b-54)*t;v=C*C+d*d;g[0]=v;v-g[0]>0?x.fillRect(a*9,b*9,9,9):0}

Mar 9 2017 12:43 AM UTC

}// 140/140

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animating some of jes5199 's circles-and-squares -ish patterns.

u/jes5199

cool! This particular pattern is based on this paper: http://www.cgl.uwaterloo.ca/csk/projects/ali…
u/donbright

thanks for linking that, very very interesting.
u/donbright

#Aliasing

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jes5199

function u(t) {

g=new Float32Array(1);for(a=192;a;a--) for(b=108;b;b--){c=(a-96)*5199;d=(b-54)*5199;v=c*c+d*d;g[0]=v;v-g[0]>0?x.fillRect(a*10,b*10,10,10):0}

Mar 8 2017 7:06 PM UTC

}// 140/140

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u/donbright

really like these type of patterns. hope you dont mind, remixed w a bit of animation https://www.dwitter.net/d/1979
u/katkip

#moire

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