Dweets by u/f8f82804

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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f8f82804

remix of d/5132 by u/Erazed

function u(t) {

c.width^=0;x.font='6em 🤷';for(i=144;i--;)x.fillText((S(t/2)**2*16%16)-i%16-S(9*S(9*i)*i%16)|0?'🤷':'🙆',50+(i%16)*113,95+120*~~(i/16))

Aug 13 2018 11:22 PM UTC

}// 132/140

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Not everyone gets "the wave" right

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f8f82804

function u(t) {

v=z=>[960*(1+S(z)),540*(1+C(z*3))]
with(x)moveTo(...v(t)),lineTo(...v(--t)),stroke()

Aug 10 2018 8:00 PM UTC

}// 84/140

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f8f82804

remix of d/9187 by u/f8f82804

function u(t) {

with(x)for(φ=311;α=S(θ=φ/99),β=99*α*S(--φ+t);beginPath(fillStyle=`hsl(${φ} 90%${9+(β>0)*β}%`))fill(arc(β+960,75*(α*C(φ+t)-C(θ)+6),20*α,0,7))

Aug 10 2018 5:54 PM UTC

}// 140/140

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#golf #sphere #animated #diffuse #shading #sequins #sprite

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#pbr

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f8f82804

remix of d/9190 by u/f8f82804

function u(t) {

x[s='fillStyle']='#0001';x[r='fillRect'](0,0,w=1920,w);for(i=a=30;z=--i*a*C(b=t/i/i);x[s]='red')x[r](w/2+3e5*S(b)*i/(d=w-z),w/4+1e3*z/d,9,9)

Aug 10 2018 12:00 AM UTC

}// 140/140

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#galaxy #trails #perspective -- had to give up the "random" starting locations to fit in a perspective transform. Using red saves a character over #fff.

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f8f82804

remix of d/2538 by u/terkel

function u(t) {

x[s='fillStyle']='#FFF1'
x[r='fillRect'](0,0,w=c.width,w)
for(i=a=30;i--;x[r](w/2+S(b=i+7*t/i/i)*250*i,w/4+C(b)*a*i,a,a))x[s]=R(i*t/a,i*a,i)

Aug 9 2018 10:36 PM UTC

}// 140/140

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pseudo-orbits #galaxy #trails

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f8f82804

remix of d/9185 by u/f8f82804

function u(t) {

c.width=500;a=29;for(i=240;α=C(T=i/a-t),i--;)for(j=6;j--;x.fillRect(i,a+j*a+S(T)*7,1,30))x.fillStyle=`hsl(${a*j**1.4} 99%${9+a*(0<α)*α**2}%`

Aug 9 2018 9:22 PM UTC

}// 140/140

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Remix #rainbow #flag with improved palette and #phong #shading with better shadows- - #pride #pbr

u/f8f82804

Correct shadows are implemented with the 0<α factor. To golf this in, I had to drop the diffuse reflection term and reuse constants. Palette improvements just took tweaking without extra characters.
u/f8f82804

Loop restructuring also give a very slight FPS improvement.

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remix of d/9174 by u/f8f82804

function u(t) {

with(x)for(φ=311;α=S(θ=φ/99),β=α*S(--φ);beginPath())arc(130*β+960,99*(α*C(φ)-C(θ)+4),28*α,0,7),fill(),fillStyle=`hsl(9 90%${30*(1+β+β**9)}%`

Aug 9 2018 7:21 PM UTC

}// 140/140

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heavily golfed #phong #sphere to allow circular #sprite without compression

u/f8f82804

#pbr #static

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remix of d/9154 by u/f8f82804

function u(t) {

for(β=s=314;β--;x.fillStyle=`hsl(${β+t}rad 90%${30*(1-(γ=C(α-1)*C(β))-γ**9)}%/${β/a}`)x.fillRect(s*S(α=β/200)*S(β)+960,s*S(α)*C(β)+s,a=53,a)

Aug 9 2018 6:09 PM UTC

}// 140/140

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Tweaked #sphere parameterization with occlusion, z-buffer and #phong #shading -- #rainbow #d3 #pbr

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#blending

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remix of d/9180 by u/f8f82804

function u(t) {

c.width=500
for(j=6;j--;)for(i=255;i--;x.fillRect(i,50+j*25+S(T=i/35-t*3)*7,1,26))x.fillStyle=`hsl(${32*j**1.3} 90%${23*(1+(a=C(T))+a**5)}%`

Aug 9 2018 2:54 PM UTC

}// 140/140

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#rainbow #phong #flag - - #pride #pbr

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remix of d/8882 by u/BalintCsala

function u(t) {

c.width=500
for(j=3;j--;)for(i=255;i--;x.fillRect(i,50+j*65+S(T=i/35-t*3)*i/20,1,66))x.fillStyle=`hsl(${120*j} 90%${25*(1+(a=C(T))+a**5)}%`

Aug 9 2018 5:53 AM UTC

}// 139/140

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#phong #flag #pbr

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