New #Sphere 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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Current theme challenge: #Opposites

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Whimpers

function u(t) {

for(a=b=u=c.width|=i=0;i++<99*t;x.fillRect(960+800*C(a+t)*S(b)/z,540+800*C(b)/z,s=20/z/z,s))a+=C(t**(1/t)),z=2+S(a+t)*S(b+=S(u)/69)

Feb 26 2020 5:22 PM UTC

}// 131/140

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Show more comments…
u/Xen

#waitforit very nicely!
u/aleamb

love it
u/EracYonchbas

Complete Garbage
u/joeytwiddle

#sphere
u/ivylab

I do noooot understand how but I love these
u/EarickYakbiss

utter trash
u/KilledByAPixel

remix of d/13148

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rodrigo.siqueira

remix of d/17501 by u/rodrigo.siqueira

function u(t) {

for(i=1e4*(t<4);i--;x.fillRect(690+400*a,500+400*b,.2,1))
S(r=i*t)>0?(a=C(r*t)*C(r*i),b=S(r*i)):b=C(a)+(a+=S(b)*.9)/9,x.fillStyle=R(i/59)

Feb 7 2020 5:52 PM UTC

}// 137/140

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#Sphere and #Spiral

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username

remix of d/9690 by u/donbright

function u(t) {

for(c.width|=i=0;i<5e3;i++)Φ=Math.acos(1-2*i/99/99),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)

Nov 26 2019 3:53 PM UTC

}// 130/140

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half a sphere

u/username

#randomremix no 38
u/f8f82804

#d3 #sphere #model
u/fourier.space

If I blink, it rotates both ways
u/username

u/fourier.space actual f, I see it too
u/username

u/fourier.space I missed to mention you on d/16759

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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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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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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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robbyg

function u(t) {

s=t*42
with(x)t<5?(beginPath(),arc(960-s,540-s,420-s*2,0,7),fillStyle=`hsl(99,50%,${15+s/3}%)`,fill()):0

Jul 29 2019 8:57 PM UTC

}// 104/140

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Ball?!

u/New_Core

=) in place of 0 in the end.. add : font="16cm'",fillText("❻",720,750)
u/katkip

^ kewl #sphere #lightness #light #d3

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katkip

function u(t) {

c.style.background=x.fillStyle=`hsl(${t*99},99%,${t*19}%)`,x.beginPath(),x.arc(960-t*99,540-t*99,(q=500-t*159)>0?q:0,0,7),x.fill()

May 11 2019 1:30 PM UTC

}// 130/140

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Colored light #d3 sphere texture #sphere #geometry #gradient #color

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pavel

function u(t) {

for(c.width=i=1944,w=960;i--;x.fillRect(w+w*S(a)*S(b)/z,540+w*C(b)/z,s=13/z/z,s))j=i%72,z=2+C(a=2.7+S(t)+(j&4?0:j)/72)*S(b=1.5+(i/72|0)/120)

Apr 11 2019 6:03 AM UTC

}// 140/140

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#default on a sphere

u/f8f82804

#d3 #sphere #perspective
u/katkip

how lol
u/pavel

I draw #default one pixel at a time and treat (x,y) of the pixels as angles (a,b) in spherical coordinates. Spherical to 3d cartesian is x=r*sin(a)*sin(b), y=r*cos(a)*sin(b), z=r*cos(b). Projecting 3d to 2d cartesian is x'=x/(2+y/r), y'=z/(2+y/r), and scaling pixel size by 1/(2+y/r)**2 so stuff in the back is smaller.

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