Dweets awesomed by u/jdspugh

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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robbyg

function u(t) {

t||(Z=150,V=Math.random()*5)
x.beginPath()
if(t<4.01)P=t*180|0,x.fillStyle=R(I=P/3%240,I,I),x.fill(x.ellipse(960,900-P,Z+=C(t*V),50,0,0,7))

Aug 26 2019 9:33 PM UTC

}// 139/140

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Vases, inspired by https://codepen.io/Gthibaud/pen/gOYwNPM

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robbyg

function u(t) {

a=t?a+=(Math.random()*2-1):400
x.fillStyle='#000a'
x.fillRect(960+C(t)*a,540+S(t)*a,9,9)

Aug 21 2019 3:30 PM UTC

}// 88/140

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Tracing a circle.

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rodrigo.siqueira

remix of d/14415 by u/rodrigo.siqueira

function u(t) {

x.fillRect(0,0,2e3,2e3)
v=(a,b,Φ,r)=>{for(i=0;i++<r;)x.clearRect(a-=S(Φ),b-=C(Φ),s=r/9,s)
r>8&&v(a,b,Φ+S(t*i**9)/2,r*=.9)}
v(940,1e3,0,99)

Aug 14 2019 1:21 AM UTC

}// 138/140

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Tesla rays #organic

u/KilledByAPixel

Φ

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tomxor

remix of d/12820 by u/tomxor

function u(t) {

for(a=b=0,i=1e4;i--;x.fillRect(960+480*S(a*3)*S(b*7),540+480*C(a*3),1,.1))r=0|2*Math.random(),a+=.2*(r-a*S(b*3+C(a*3+C(a*3)))),b+=.4*(r-a*b)

Aug 9 2019 6:57 PM UTC

}// 140/140

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Chaos Planet #planet #space

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katkip

function u(t) {

eval(unescape(escape`𭁼𯀨𦀽𜠶𜀬𦐽𜠴𜀬𥠽𭠽𜐰𚐻𩡯𬠨𨰮𭱩𩁴𪁼👩🐰𞱩𚰫🀹𞐻𚑸𛡦𪑬𫁓𭁹𫁥👒𚀰𛁩𚠳𚐬𮀮𨡥𩱩𫡐𨑴𪀨𚐬𮀮𨑲𨰨𦀭𪐪𠰨𬠽𭀪𥠯𞐩𛁙𛑩𚡓𚁲𚐬𜠰𜀭𪐪𜠬𜀬𝰩𛁸𛡦𪑬𫀨𚐊𦀫👖𞱙𚰽𭠻𭠫🐮𝐻𪑦𚁙🠸𞀰𚑶𚠽𛐮𝠬𦐭🐹𞱩𩠨𦀾𜐷𜠰𚑖𚠽𛐮𞐬𦀭🐹`.replace(/uD./g,'')))

Aug 6 2019 9:56 AM UTC

}// 140/140

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Bouncing #sphere #shades #lighting #realistic #bounce #ball #physics

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taupelink

remix of d/15125 by u/taupelink

function u(t) {

t||(x.font=`45em"`,x.fillText("f(",40,720),x.fillText(")",1650,720))
x.drawImage(c,0,0,2e3,1e3,450,160,1400,700)

Aug 3 2019 3:24 AM UTC

}// 112/140

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u/katkip

chaotic equation
u/taupelink

the recursion piece doesn't seem to work on ios/safari. looking at it on my mobile device, it's just "f( )" :)
u/taupelink

this code replacement seems to make it work on ios/safari: x.drawImage(c,0,0,1920,1080,450,190,1280,720)

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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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pavel

remix of d/15194 by u/robbyg

function u(t) {

with(x)for(i=99;i--;clip(fill(arc(960-r,540-r,500*(1-j**3),0,7))))j=1-i/98,r=200*j,beginPath(fillStyle=`hsl(60,90%,${9+j*40}%)`)

Jul 30 2019 3:52 AM UTC

}// 128/140

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Poor man's ray tracing

u/pavel

Using clip so the light can 'spill over.'
u/katkip

#d3 #ball #sphere
u/rep_movsd

#underrated

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KilledByAPixel

remix of d/15191 by u/KilledByAPixel

function u(t) {

(t*=60)?x.fillRect(t%19,t/19|0,("񥕕񥕕񥚥񥥕񥟪񦵅𵟤𕰁𒏤𑠀𐯹񑙀񠛾񥖐򥚿򹠪󰚯򺤏􈊯󺡇􎚫􊤂􏩪􊮕󏹙􎮪򿹚󏮩񯾦񫾕򫿪𐮠򻶺𐏨򻰟𐎪􉰂򐎩󍐁󴋿򿵕󎮾򿺪򿿮򿿪򿿿󏿾􋿻􏿿󏿾􏿿􏿿􏿿򻿿􏿿򺾑􏿿𺩐􏿿񫵑򻯿񫵕򺯿񵪕".charCodeAt(t/5)>>t%5*2&3)/3,1):c.width=60

Jul 29 2019 10:50 PM UTC

}// 140/140

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The Mona Dweetsa

u/KilledByAPixel

19x34 #PixelArt Mona Lisa with 4 shades of grey stored as an astral unicode string plus code to unpack and render.
u/magna

GG WP
u/KilledByAPixel

#monalisa

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nystrand

function u(t) {

for(i=a=c.width=2e3;i--;x.fillRect(a,0,i/3,a))x.transform(1,-i/5e5,n=1+C(t+i)*4,1,n/i-199,0),x.fillStyle=R(i-a/2,b=i/9+99*C(t),b,.04)

Jul 29 2019 12:02 PM UTC

}// 133/140

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u/katkip

#realistic #waves
u/katkip

awesome
u/taupelink

fantastic
u/13thptr

great
u/KilledByAPixel

🌊
u/joeytwiddle

Beautiful! #sea #ocean #water #sunset See d/10782 (yonatan)

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