Dweets awesomed by u/LimeLaser

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: #ScaryMovies

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LimeLaser

function u(t) {

x.beginPath(s=800,d=3)
p=[[0,1,d],[C(t),1,S(t)+d],[C(t),-1,S(t)+d],[0,-1,d]]
p.map(v=>x.lineTo(960+s*v[0]/v[2],540-s*v[1]/v[2]))
x.stroke()

Aug 29 2019 4:06 AM UTC

}// 139/140

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3D Cylinder Sketch

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LimeLaser

function u(t) {

r=Math.random
x.globalAlpha=.01
if(t<23){x.beginPath()
for(i=99;i--;){a=6.3*r()
p=500*r()**.1
x.lineTo(960+p*C(a),540+p*S(a))
}x.stroke()}

Aug 1 2019 3:10 AM UTC

}// 138/140

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Rendering Of A Cannonball

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taupelink

remix of d/15218 by u/taupelink

function u(t) {

for(i=1e4,d=e=0;i--;)x.fillRect((q=d*3e3)*C(p=e*6.28),360+q*S(p),1,1),d+=((r=Math.random()*4|0)-1-d+d*d*e/4)/2,e+=("2110"[r]-1-e)/2

Aug 1 2019 12:36 AM UTC

}// 131/140

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Moved the X*X*Y term over to the X-coordinate

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jakubtel

function u(t) {

c.width=1920
for(i=0;i<96*65;i++)
{x.fillStyle=R(a=30*T(t/50*i)*S(t*5),a/2*T(i%a*10),10*T(t%i%10),.9)
x.fillRect(i%100*20,i/5,20,20)}

Jul 31 2019 11:11 PM UTC

}// 133/140

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saturday night fever

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taupelink

remix of d/15167 by u/taupelink

function u(t) {

for(i=1e4,d=e=0;i--;)x.fillRect(240+(q=d*3e3)*C(p=e*6.28),135+q*S(p),1,1),d+=((r=Math.random()*4|0)-1-d)/2,e+=("2110"[r]-1-e-d*d*e)/2

Jul 31 2019 12:40 PM UTC

}// 133/140

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u/donbright

awesp,e
u/donbright

some

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robbyg

remix of d/15194 by u/robbyg

function u(t) {

for(i=2e3;i--;x.fillRect(X,Y,1,1))d=Math.random()*420,X=960+C(d+i)*d,Y=540+S(d+i)*d,x.fillStyle=`hsl(9,50%,${90-Math.hypot(760-X,400-Y)/7}%`

Jul 30 2019 9:47 PM UTC

}// 140/140

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More realistic shading.

u/robbyg

You can change the position of the "light" by changing the two numbers in Math.hypot(). Also, golfing tips welcome!
u/pavel

Some golf tricks in d/12574
u/aleamb

#shading #sphere
u/Cloud

Render in Blender)

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timur

function u(t) {

c.width=1920;
x.beginPath();for(var i=0;i<=200;i++)
x.arc((400)+i*9*S(t/9),S(t)+i*4+300,S(t/3)*i+200,90,Math.PI*S(t+i/60));x.stroke();

Jul 30 2019 8:54 PM UTC

}// 134/140

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moving circles

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katkip

function u(t) {

c.outerHTML=`<svg width="300"height="300"><polygon points="100,10 40,198 190,78 10,78 160,198"style="fill:#a00;stroke:red;stroke-width:9"/>`

Jul 30 2019 8:40 PM UTC

}// 140/140

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#svg

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louis1001

function u(t) {

m=S(t)
for(i=0;i<=360;i+=((m+1)*5)|2){
r=20+(m+1)*300
w=C(i+t%5)*r
h=S(i+t%5)*r
x.fillRect(960+w, 540+h, 2, 2)
}

Jul 30 2019 7:25 PM UTC

}// 112/140

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First attempt at a dweet.

u/katkip

Nice
u/chenliang

oh,my god!

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katkip

remix of d/15196 by u/KilledByAPixel

function u(t) {

x.font='23cm"',x.fillText("🖼",-99,600)

Jul 30 2019 6:30 PM UTC

}// 38/140

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