New #path2d dweets

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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Agnes

function u(t) {

c.width|=A=t?A:[0]
R=(a)=>a*(.5-Math.random())
x.stroke(new Path2D("M960 540c"+(A=A.map(e=>e*.99)).join(" ")))
A.push(R(250))

Mar 6 2024 7:31 AM UTC

}// 125/140

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Autograph shrinking into a black hole #path2d (fixed version that can't roll a negative number for the first number)

u/Tesseract

Nice. .join(" ") is unnecessary since commas are allowed as separators in paths.
u/Agnes

Oh, interesting! The Mozilla documentation of SVG paths used commas for every other number for the C command so I didn't think you could use them everywhere.
u/lewdev

Change .join(" ") to .join` ` to reduce two characters.

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Agnes

function u(t) {

c.width|=A=t?A:[]
R=(a)=>a*(.5-Math.random())
x.stroke(new Path2D("M960 540"+A.map(e=>"l"+(e[0]*=.9)+" "+(e[1]*=.9))))
A.push([R(99),R(99)])

Feb 29 2024 8:14 PM UTC

}// 140/140

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Wire attempting to escape a black hole #path2d

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jylikangas

function u(t) {

for(i=9;i--;x.fill(new Path2D(`M1 8 3 3Q4 0 6 2L7 3L6 3 Q6 7 3 6`)))x.setTransform(i%4?-35:35,0,!x.fillRect(0,6,99,.2),30,i%5*520,200)

May 7 2020 6:47 PM UTC

}// 134/140

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Dweety Birds on a Wire

u/KilledByAPixel

🐦👍
u/katkip

birb
u/aleamb

wow! love it!
u/aleamb

#animals #bird #path2d

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veubeke

function u(t) {

c.width^=0
for(x.transform(80,i=9,0,80,960,540);i--;x.fill(new Path2D(`M-1-5q${D=C(t/2)+1} 1,2 0q ${D-2}-1,-2 0`)))x.rotate(i-8?.7:S(t/2)*6)

Nov 15 2019 9:36 AM UTC

}// 140/140

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u/Xen

smoooth
u/DataMeta

Mmm niice
u/michaelplzno

impressive!
u/katkip

#path2d

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robbyg

remix of d/15750 by u/robbyg

function u(t) {

for(Y=13;Y--;)for(X=12;X--;)x.fillStyle=`hsl(${(X+Y*3)*66-t*33},70%,60%`,x.fill(new Path2D(`M${X*180-30} ${Y*90-45}l90,45,l-90,45l-90-45z`))

Sep 20 2019 6:56 PM UTC

}// 140/140

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Minus wiggles, plus colors

u/robbyg

#path2d

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robbyg

remix of d/15743 by u/katkip

function u(t) {

c.width|=0
for(Y=13;Y--;)for(X=12;X--;)x.fill(new Path2D(`M${X*180-40} ${Y*90-30+S(X*C(t)+Y*S(t))*3}l90,45,l-90,45l-90-45z`))

Sep 20 2019 2:01 PM UTC

}// 125/140

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Unpacked and simplified (for better or worse)

u/robbyg

#path2d
u/katkip

good idea

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robbyg

function u(t) {

for(c.width|=i=9;i--;)x.stroke(new Path2D(`M${560+i*100+S(t)*300} 440h50v200h-50z`))

Sep 6 2019 3:24 PM UTC

}// 84/140

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Stroked #default using Path2D. Lots of room for activities.

u/robbyg

#path2d

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13thptr

function u(t) {

h=N=M=0
for(i=18;i--;x.stroke(new Path2D(`M500 500L${M+(b=500)} ${N+b}L${O+b} ${P+b}`)))O=M,P=N,M=C(h+=Math.atan2(99,r=i**.5*99))*r,N=S(h)*r

Jun 28 2019 9:33 PM UTC

}// 140/140

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Spiral of Theodorus

u/donbright

awesome
u/13thptr

#spiral #math #path2d
u/13thptr

Thanks to u/joeytwiddle for the golfing help

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robbyg

function u(t) {

c.width=192
x.arc(76,28,3,0,7)
x.arc(116,28,3,0,7)
x.fill()
x.fill(new Path2D(`M86 44 Q96 ${34-C(t)*10},106 44T106 64T86 64T86 44`))

Jun 27 2019 6:41 PM UTC

}// 133/140

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Comedy/Tragedy

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taupelink

function u(t) {

C=100
c.width|=0
for(i=9;i--;)x.fill(new Path2D(`M${C*(4+i+3*S(t))} 400 h50 v${2*C} h-50 v${-2*C}`))

Jun 9 2019 9:57 PM UTC

}// 101/140

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#default with #path2D

u/katkip

nice
u/taupelink

Notes: The v${-2*C} at the end can be omitted. I regret my choice of "C" for a variable name--that's cosine :)

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