Dweets awesomed by u/electric-skeptic

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: #Opposites

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yonatan

remix of d/10782 by u/yonatan

function u(t) {

for(i=c.width=99;i--;T=(j,t)=>S(j*j+i/j-t*7)+C(j**5-i/j*7+t)**3)for(k=j=56;j-->-k;x.fillRect(i,a,1,(j>0)*T(j,t)*j/k-q*q))q=T(a=j/2+30,0)/j*2

Oct 31 2018 11:54 AM UTC

}// 140/140

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Show more comments…
u/katkip

i love your #realistic design
u/jylikangas

YES!
u/aleamb

OMFG!
u/yonatan

:O https://twitter.com/aemkei/status/1057749002…
u/lionleaf

#landscape #water #mountains #real
u/sigveseb

Full-on insanity
u/iverjo

So good!
u/katkip

#d3
u/joeytwiddle

#scene
u/vain

beautiful work! titanic, iceberg ahead
u/jdspugh

Amazing!

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jylikangas

function u(t) {

eval(unescape(escape`景爨挮睩摴栽椽ⴹ㭩⬫㬩硛昽❦楬汒散琧崨堽㤹ⵃ⡴ⴽ启㔹⤪⠹〫椪㔩ⱘ⼹⭃⡴⨴⤪⡔㵩⬴⤪⨲⼵ⱳ㴷⬡吪㐬猭㔩㭦潲⠻椫⬼㌰〻⥸学崨椬㤹ⵃ⡩⼳ㄩ⨹Ⱞ㔬匨椯㠹⤪㤩㭸⹳捡汥⠭⸶ⰱ⤻砮摲慷䥭慧攨挬⵩ⰵ〩`.replace(/u(..)/g,"$1%")))

Oct 30 2018 1:39 PM UTC

}// 140/140

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Vultures

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u/yonatan

Single vulture: for(c.width=i=300;i-->-4;)x[f='fillRect'](i,99-C(i/31)*9,.5,S(i/89)*9),i<5&&x[f](X=99-C(t+=i/59)*(90+i*5),X/9+C(t*4)*i**2/5,s=7+!i*4,s-5)
u/yonatan

Nice trick with the flipped drawImage!
u/jylikangas

Thanks! Here's two vultures without compression... 'for(c.width=i=-9;i++;)x.fillRect(X=99-C(t-=T/59)*(90+i*5),X/9+C(t*4)*(T=i+4)**2/5,5+(s=2+!T*4),s) x.scale(-.5,1) x.drawImage(c,-290,50)'
u/yonatan

Here's a whol bunch of 'em for(c.width=i=-9;i++<9;)i<0?x.fillRect(X=99-C(t-=T/59)*(90+i*5),X/9+C(t*4)*(T=i+4)**2/5,5+(s=2+!T*4),s):x.scale(-.9,.9)|x.drawImage(c,-290,50)
u/magna

Whoa!
u/iverjo

Clever technique
u/iverjo

#birds

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jylikangas

function u(t) {

with(x)for(i=70;i--;fillStyle=R(fill(),i*3),beginPath())ellipse(X=i**5%3e3,Y=S(i)*950+C(t+i)*9,r=i>68?6e3:Y*Y/5e3+i,r/3,0,i,i+6),lineTo(X,Y)

Sep 13 2018 5:41 PM UTC

}// 140/140

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Waterlily lake

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u/magna

Great!
u/joeytwiddle

So nice. #water #organic #scene
u/kipkat

#cute
u/Xen

Very clever
u/DataMeta

Peaceful
u/magna

🐸

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donbright

function u(t) {

c.width^=0
for(r=200;r--;)
for(a=199;a<1e3;a+=200)
θ=2*Math.asin(r/a*C(t)),
x.fillRect(1e3+r*(θ+S(θ)),200-r*(-3-C(θ)),9,9)

Sep 11 2018 5:40 AM UTC

}// 123/140

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This is a set of 5 isochronous cycloidal pendulums, based on equations from Wikipedia. https://en.wikipedia.org/wiki/Cycloid and Rem088roy's illustration. Each pendulum takes the same amount of time to reach the 'bottom' because the bottom end of each one follows a Tautochrone Curve. https://en.wikipedia.org/wiki/Tautochrone_Cu… #cycloid #physics #pendulum #huygens

u/donbright

it's not perfectly accurate but its kind of close...
u/DataMeta

#smooth

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donbright

function u(t) {

c.width=2e3
for(i=0;i<t*t;i++){Φ=Math.acos(1-2*i/t/t)
Θ=10.1664*i
x.fillRect(
500*(2+C(Θ)*S(Φ)*S(t)+C(Φ)*C(t)),
500*(1+S(Θ)*S(Φ)),9,9)}

Sep 7 2018 4:57 AM UTC

}// 135/140

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Evenly spaced points on a sphere, based on CR Drost's phyllotaxis sunflower cylyndrical equal area map in python: https://stackoverflow.com/questions/9600801/…

u/joeytwiddle

Useful! #sphere
u/Odog8

Love me a PHI sphere in the morning!

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f8f82804

remix of d/9669 by u/f8f82804

function u(t) {

t||(X=8);c.onmousemove=e=>{X=e.x/99};c.width^=0;for(x.beginPath(i=370);i--;x.lineTo(960*(1+S(i+X+C(i))),540*(1+C(i*3-t+S(i)))));x.stroke()

Sep 5 2018 4:42 PM UTC

}// 138/140

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use your #mouse to rotate the view -- #animated

u/donbright

love it!!!!!!!!
u/iverjo

#interactive

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f8f82804

remix of d/9662 by u/f8f82804

function u(t) {

t||(X=0);c.onmousemove=e=>{X=e.x/99};c.width^=0;for(x.beginPath(i=370);i--;x.lineTo(960*(1+S(i+X+C(i))),540*(1+C(i*3-X+S(i)))));x.stroke()

Sep 5 2018 4:35 PM UTC

}// 138/140

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#mouse control #remix for u/donbright

u/donbright

thats very cool... i wonder if these types of things can be 3d printed...

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katkip

function u(t) {

x.font='4in x';x.lineWidth=120/t;x.strokeText('☭𝔇𝔴𝔦𝔱𝔱𝔢𝔯☭',40,600)
x.strokeStyle=`hsla(${t*9},99%,50%)`;

Aug 31 2018 8:02 AM UTC

}// 103/140

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#sorry XD

u/joeytwiddle

Nice effect! #text
u/katkip

thx

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iverjo

remix of d/8988 by u/katkip

function u(t) {

C=1e3;for(i=99;i--;)for(j=40;j--;)Y=3+S(i/3)*S(j/5+t*3),x.fillStyle=R(0,Y*50),x.fillRect(C+C*(i-t-25+S(t)*2)/j,C*Y/j,s=999/j,s)

Aug 1 2018 5:07 PM UTC

}// 127/140

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#landscape #perspective

u/magna

🐑

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katkip

function u(t) {

cx=1e3
for(i=99;i--;)for(j=40;j--;)X=i-t-25+S(t)*2,Y=3+S(i/3)*S(j/5+t*3),x.fillStyle=R(0,0,Y*84),x.fillRect(cx+1/j*X*cx,60+Y/j*cx,s=999/j,s)

Jul 30 2018 10:57 PM UTC

}// 140/140

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