Dweets awesomed by u/davidsover

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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katkip

remix of d/13374 by u/katkip

function u(t) {

r=Math.random;for(i=999;i--;)p=r()*7,R=r()*p*99,x.fillStyle=`hsl(${p*p*R/9} 99%${R/9}%)`,x.fillRect(960+(X=C(p)*R),540+(Y=S(p)*R),9,9)

Apr 22 2019 11:41 AM UTC

}// 134/140

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Fibonacci rainbow #random #color #rainbow

u/katkip

Also shows protons flying near a black hole

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katkip

function u(t) {

r=Math.random;for(i=999;i--;)p=r()*7,R=r()*600,x.fillStyle=`hsl(${p*360/3.14/2} 99%${R/5}%)`,x.fillRect(960+(X=C(p)*R),540+(Y=S(p)*R),9,9)

Apr 22 2019 11:39 AM UTC

}// 138/140

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Hue wheel

u/katkip

#color #random #rainbow

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KilledByAPixel

function u(t) {

for(i=0;i<495;x.fillStyle=`hsla(${t-i/3},99%,${i%99}%)`)x.beginPath(),x.arc(960+(Q=1200*S(i*t/2e3))*S(i),540+Q*C(i),i++?99:2e3,0,7),x.fill()

Apr 21 2019 7:01 PM UTC

}// 140/140

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April showers bring May flowers. #RoseCurve

u/joeytwiddle

#flower

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KilledByAPixel

remix of d/13325 by u/KilledByAPixel

function u(t) {

for(i=0;i<2e3;x.fillRect(i?960+i*S(F=260*(t+9)/i+S(i*i)):0,i?500+.2*(2*i*C(F)+2e4/i):0,K=i++?S(i)*9:2e3,K))x.fillStyle=R(99*i,2*i,i,i?1:.4)

Apr 20 2019 7:07 PM UTC

}// 139/140

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#blackhole

Show more comments…
u/DataMeta

Quite cool!
u/katkip

wow
u/aleamb

epic!
u/donbright

#space #astronomy
u/KilledByAPixel

Full explanation on my blog: http://frankforce.com/?p=6378
u/chenliang

cool
u/katkip

top of the year
u/KilledByAPixel

130: for(i=0;i<2e3;x.fillRect(i&&960+i*S(a=260*(t+9)/i+S(i*i)),i&&500+i*C(a)/3+5e3/i,K=i++?S(i)*9:2e3,K))x.fillStyle=R(99*i,2*i,i,i+.2)

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ds0

remix of d/12186 by u/ds0

function u(t) {

c.width|=r=540
for(i=r;i--;){Y=r-(2*i)
W=(2*(r**2-Y**2)**.45)
x.fillStyle=R(255*S(t+111*i))
x.fillRect(960-(W/2)+.8*r*S(t+111*i),540-Y,W,3)}

Feb 6 2019 3:00 AM UTC

}// 140/140

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Red Visitor

u/katkip

??
u/Galaxtone

He keeps swapping

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yonatan

function u(t) {

for(k=c.width=314;T=k--/5;x.arc(99+(Y*S(t)+X*C(t))*r,80+(2*C(2*T)+C(T))*r,r/2,0,7))X=2*S(2*T)-S(T),Y=S(3*T),r=(9+X*S(t)-Y*C(t))*2
x.stroke()

Oct 17 2018 1:48 PM UTC

}// 140/140

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#trefoil #knot

u/katkip

this looks nice
u/tomxor

Neat knot! looking forward to playing with this one.
u/iverjo

Hot or knot?

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diracdelta

remix of d/10361 by u/diracdelta

function u(t) {

a=0,y=0
for(i=0;i<1000;i++){r=Math.random()*3;
u=r<1?-.5:(r<2?-1:0)
v=r<1?0:(r<2?-1:-1)
a-=u;a/=2;y-=v;y/=2;x.fillRect(a*1920,y*1080,1,1)}

Oct 13 2018 6:11 AM UTC

}// 138/140

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yonatan

function u(t) {

c.width=-1
for(i=2e3;i--;x.fillRect(150+C(--m)*r,30+i/15+S(m)*r/2,9,6))r=9+C(i/770)**2*44,x.fillStyle=R(a=S(m=i+t)**8*255+128,a*.7,a/4,i/66)

Oct 8 2018 7:42 AM UTC

}// 140/140

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http://zozuar.org/txt/chalice/

Show more comments…
u/BalintCsala

The scariest part of this halloween is how easily you can kill anyone's self-esteem
u/firegodjr

-10 self esteem but +50 knowledge with that nice write-up. Thanks for that :)
u/katkip

saint gral
u/hvianna

Awesome! Thanks for the tutorial!!
u/iverjo

Kudos for the write-up. I like that I can see the result of the code in each revision
u/BirdsTweetCodersDweet

Yeah, these write-up tutorials showing the step-by-step changes in the code are amazing... Thanks!
u/BirdsTweetCodersDweet

P.S I wouldn't say it "devolved" into a demo - demos are good!
u/joeytwiddle

#model #lighting #holygrail

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katkip

function u(t) {

c.width=1920
for(i=0;i<40;i++)x.fillStyle=R(200-i*4,200-i*4,200-i*4),x.fillRect(800+i*4*C(t),200+i*4*S(t),400+i*4,400+i*4)

Aug 31 2018 11:40 AM UTC

}// 122/140

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3D Cube

u/Lazy1337

"cubes" are always 3D unless they have a prefix lol
u/davidsover

Can't wait for a 3D Square...

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cantelope

function u(t) {

eval(unescape(escape`景爨椽眽⡣⹷楤瑨簽〩⼲㭩ⴭ㭸⹢敧楮偡瑨⡸⹬楮敗楤瑨㴲⭨⽚⽚ⱸ⹳瑲潫攨⤩⥛ㄵⰰⰱ崮浡瀨欽㹻朽椭欬砮汩湥呯⡷⭓⡱㵧⼨栽ㄵ㈮㠩⭴⼳⤪⡚㵃⡰㵧⼲⸳㠷㌫琩⬴⭓⡴⤩⼨娽䌨焩⩚ⴹ⤪眬⡓⡰⤭㌩⽚⩷⥽⤻`.replace(/u(..)/g,"$1%")))

Aug 23 2018 2:52 AM UTC

}// 140/140

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