Dweets awesomed by u/iverjo

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: #Food

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sawaxon

function u(t) {

c.width|=0;k=i=>(S(i*t)+1)*49;p=i=>S(i)*9+i*99;for(j=19;j--;)for(i=12;i--;x.moveTo(p(j),p(i)))x.ellipse(p(j),p(i),k(i),k(j),0,.1,0);x.fill()

Mar 9 2017 7:14 PM UTC

}// 140/140

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kchplr

function u(t) {

for(c.width|=0,i=3e3;i--;X=S(t+i*.01)*500,D=1-((Y-540)**2+X*X)**.5/400,x.fillRect(960+X*D*1.7,Y+D*(100+S(t)*99),D*D*99,D*20))Y=(t+i<<2)%2e3

Mar 9 2017 6:42 PM UTC

}// 139/140

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u/jsizzle

Wow!
u/recursive

The movement looks like smoke. Very nice.
u/iverjo

Nice!
u/joeytwiddle

#smoke

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jsizzle

function u(t) {

a=t/15;for(q=0,nx=ny=0;q<100;q++){for(i=1;i<3;i++){nx+=C(a+t)*500/i;ny+=S(a+t)*500/i;a+=t/i}x.fillRect(nx+900,ny+500, 1, 1)}

Mar 9 2017 6:25 PM UTC

}// 124/140

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Sand Art

u/iverjo

A beautiful pattern emerges after ~1 minute
u/donbright

very very nice looking
u/donbright

bravo

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nick

function u(t) {

k=195;y=22;for(j=-20;j<55;j++)for(i=1;i<85;i++){x.fillRect(i*y,i*5+y*j,y,y);x.fillStyle=R(k*(S(t*i**3))+S(y*j),k*C(t*j**2)+9*S(y*i),k*C(t))}

Mar 9 2017 5:39 PM UTC

}// 140/140

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u/iverjo

Intense

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bga_

function u(t) {

for(n=16,W=c.width|=p=0;++p<64*n;)r=Math.exp(U=(p&64?63-p%64:p%64)/9),x.lineTo(W/2+S(a=U+t+6.28*(p>>6)/n)*r,c.height/2+C(a)*r);x.fill()

Mar 9 2017 5:25 PM UTC

}// 135/140

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Hypnos! n = count of segments / 2

u/iverjo

Very nice!
u/iverjo

#spiral #opticalillusion
u/384.cz

AWESOME
u/384.cz

AMAZING

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recursive

remix of d/1983 by u/jes5199

function u(t) {

t*=60
s=1<<29
for(b=1081;--b;){
	c=(t-960)*3
	d=(b-540)*3
	v=c*c-d*d
	g=v*~s+v*s //looks bloated, but is magic
	v+g>0&&x.fillRect(t,b,1,1)
}

Mar 9 2017 4:39 PM UTC

}// 140/140

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Dweet tech demo: Convert to single precision float without the bulky "Float32Array". Pixel for pixel repro of 1983.

u/jes5199

nicely done!

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sfz

remix of d/1926 by u/sfz

function u(t) {

I=S(t)
O=C(t)
a=Math.sqrt(t*999)
b=4*a/5
for(i=9;i--;)x.fillStyle=`hsla(${t*b/i},80%,66%,.01)`,x.fillRect(i%3*4*a+a*O-b*I,i*139+a*I+b*O,a,b)

Mar 9 2017 10:47 AM UTC

}// 140/140

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Fermat's spiral

u/donbright

reminds me of impressionist watercolor eventually

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nick

function u(t) {

k=125;for(j=-4;j<14;j++)for(i=-1;i<26;i++){x.fillRect(i*70,i*10+80*j,72,82);x.fillStyle=R(k*(S(17*i^2)+1)+k*S(j),k*C(t*j^2)+k*S(i),k*C(t))}

Mar 9 2017 7:59 AM UTC

}// 139/140

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Online Dwitter Primer: http://nickpisca.com/sherpa/?p=600

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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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recursive

remix of d/1976 by u/recursive

function u(t) {

for(d=256;--d;)for(X=-32;++X<32;x.fillRect(960+X*8e3/d,100+7e4/d-h,120,9))x.fillStyle=R(h=(C(a=d/9+t*6)+C(X/9+a/3))*35,g=h+C(X^d)*6+90,g/.8)

Mar 9 2017 12:33 AM UTC

}// 140/140

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Bluer waves

Show more comments…
u/sfz

Incredible
u/sigveseb

Epic
u/FireFly

This is crazy, great stuff :D
u/iverjo

Best water on dwitter thus far!
u/iverjo

I also tried to achieve this some time ago, but yours is much more convincing
u/iverjo

https://www.dwitter.net/d/65 and https://www.dwitter.net/d/254 and https://www.dwitter.net/d/295 and https://www.dwitter.net/d/366
u/recursive

Your idea gives really great color to the surface. I wonder if it's possible to animate the colors using your idea, and the wave geometry and lighting using mine.
u/magna

(ノಠ益ಠ)ノ彡┻━┻
u/Renaud___

very very nice
u/jsizzle

Seriously amazing. Wow
u/SpecialAgent

Bravo
u/ideokan

i am a web developre, feeling like a dumb monkey in here
u/PiggyClone205

Welcome to the club, ideokan.
u/Godcranberry

This sis amazing, totally my favorite
u/Godcranberry

is* mb fam
u/iverjo

#water
u/hollo47

#ocean
u/katkip

#waves
u/vain

Very nice and lovely wave

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