Top dweets by u/rodrigo.siqueira

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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rodrigo.siqueira

remix of d/26040 by u/DazeWare

function u(t) {

for(c.width=i=W=220;i-=2;)for(j=9;j<W;x.fillRect(i,j++-h,2,9/d))x.fillStyle=R(h=((d=W*9/j)*S(A=i/W+S(t))+t&d*C(A)+t*9&11)*9/d)

Aug 26 2022 2:11 PM UTC

}// 126/140

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3D fly, perspective, fog effect, emboss. I just deleted random code, changed a few parameters and got this as result.

u/jdspugh

Wow
u/Joachim

That's amazing!! I'll need to pick this apart... looks a bit like https://en.wikipedia.org/wiki/Mode_7
u/cantelope

dat bitwise alien math :D
u/aleamb

wtf!!.... WOW!

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rodrigo.siqueira

remix of d/25157 by u/vgel

function u(t) {

c.width|=0,x.scale(9,9),t?I--:(p=[I=0])
for(i=220;i--;x.fillText('🚁',99,p[I+99]+35))x.fillRect(i,p[(i+I)]||=C(t*9)*5+S(t-C(t)*3)*20+30,1,60)

Mar 23 2022 12:03 PM UTC

}// 140/140

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Helicopter #cavern explorer

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rodrigo.siqueira

remix of d/25041 by u/taupelink

function u(t) {

for(m=2e3;m--;x.fill())r=m**.9%400,x.beginPath(x.fillStyle=R(i=m%500,i/2,i/3,i/500)),x.arc(960+r*S(k=i-t/3)*(v=1+.5/t),540+r*C(k)*v,m/i,0,6)

Feb 28 2022 10:18 PM UTC

}// 140/140

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rodrigo.siqueira

remix of d/25010 by u/rodrigo.siqueira

function u(t) {

for(m=k=220;m--;x.fill())d=2**t*t,r=m*t,x.beginPath(x.fillStyle=R(m%2*r/t+r/2/d,k/d/t,r/d)),x.arc(510+m%2*900+r*C(m),560+r*S(m*r/t),m/d,0,m)

Feb 23 2022 12:43 AM UTC

}// 140/140

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Blue and Red objects

u/tomxor

Interesting
u/joeytwiddle

Yikes!

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rodrigo.siqueira

remix of d/24777 by u/Vertfromage

function u(t) {

x.fillRect(0,0,2e3,2e3)
for(i=2e3;i--;x.clearRect(i,580+S(i/99-t+C(i/40))*119+S(t/9+S(i-t/8)*7)*2*T(i/429+i),2,2))
x.fillStyle=R(0,54,80,.1)

Jan 18 2022 12:07 PM UTC

}// 140/140

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Waves and Particles

u/ciaccodavide

beautiful!

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rodrigo.siqueira

remix of d/23948 by u/rodrigo.siqueira

function u(t) {

for(i=k=900;--i;x.fillRect(k+f*C(i*Y),k-Y*q,q*Y,Y*i*v))f=i*t,X=f%3-1,Y=X*f%7-2,x.fillStyle=R(q=i*X,q*=X,q*=Y*Y*Y*q/i/X,i/q/q),v=.3**t/t

Sep 29 2021 1:33 PM UTC

}// 135/140

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Night city from the sea #cityscape

u/LTVA

Hello. I want to use this code in my future game as generator of the part of the background. Also I would try to modify it slightly so generation would be partially random and big "skyscrapers" will have more details (2-color grid representing windows)

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rodrigo.siqueira

function u(t) {

!t&&x.rotate(.7,x.fillRect(0,0,Z=2100,Z),x.translate(Z,0))
for(i=4;i--;x.fillRect(i*50,t*999,50,50))x.fillStyle=`hsl(${i*66},90%,50%,99%)`

Sep 16 2021 9:57 PM UTC

}// 138/140

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Sinclair ZX Spectrum #tribute RIP Sir Clive Sinclair

u/donbright

nice

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rodrigo.siqueira

function u(t) {

K=3.5
if(!t){for(b=-K;b<=K;b++)for(C=-K;C<=K;C++)for(a=-K;a<0;a++)for(X=680;X--;x.fillRect(X*1.7+380,540+Y,2,2))Y=(C*120+a*(X-340))/b*1.5}

Apr 19 2021 4:20 PM UTC

}// 138/140

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Cover of "Computers And Automation And People" magazine, January, 1973. I was able to recreate the image based on a small description (in page 5): "Front Cover Picture: The front cover drawing, called "Phropase", was produced by an Algol 60 program, drawing straight lines ax + by + c = 0, where a, b and c were "stepped arithmetically in nested loops". The computer used was an ICL 1904A, driving a Calcomp 1934/6 plotter. The programmer artist is Nihan Lloyd-Thurston.

u/rodrigo.siqueira

Here is the full journal with it's cover artwork and description: https://archive.org/details/bitsavers_comput… "Computers And Automation And People", Jan., 1973
u/smtsjhr

thats so cool and well done! I find this kind of exercise to be very inspiring : )

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rodrigo.siqueira

remix of d/21871 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,z=-99,y=300,d=0;i--;d+=S(i*i)*9+C(i+t/3)+1)y+=C(d)*5,x.fillRect(z+=C(d)+2,y,1.2,450)
x.clearRect((t/2)%3*700,500+C(t*3)*40,30,9)

Mar 9 2021 8:27 PM UTC

}// 138/140

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Exploring Gond's cave (based on Vanguard #Atari #game)

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rodrigo.siqueira

remix of d/20948 by u/rodrigo.siqueira

function u(t) {

c.width|=0
for(var i=5e3;i--;f(0,K=i%2,280,i))
f=(w,h,q,d)=>q>99?f(C(t*2+K)*h+q*C(d+t),w+q*S(d+t),q/2,i*i):x.fillRect(w+480+930*K,h+510,5,9)

Dec 10 2020 9:43 PM UTC

}// 140/140

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Rotating Double Donuts #torus #donut 🍩🍩

u/TGY

I don't think you need "var" there. It works fine without it :)
u/New_Core

nice, and its 5 FPS faster with the "var" then without on my old machine.

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