Top #bounce 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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rodrigo.siqueira

remix of d/23332 by u/rodrigo.siqueira

function u(t) {

t=S(t*3)*8
for(X=c.width=99;X--;)for(Y=99;Y--;x.fillRect(Y,55-X,1,1))o=255-X*Math.hypot(X-45+t*t,Y-48+t*6),s=C(t)/9-.4,x.fillStyle=R(-o/s,o)

Jul 16 2021 12:11 PM UTC

}// 140/140

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Bouncing Ball #bounce #ball

u/Xen

nice!!
u/donbright

funny

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veubeke

function u(t) {

x.fillRect(0,0,c.width^=0,2e3)
x.font='50em"'
x.transform(s=t<1||1+S((t-1)*Math.PI)/4/t,0,0,1/s,960-400*s,(t>1||t)*999)
x.fillText('🎃',0,0)

Sep 11 2019 7:41 PM UTC

}// 139/140

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It’s almost time

u/joeytwiddle

Nice! #halloween #pumpkin #bounce

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pavel

remix of d/14376 by u/pavel

function u(t) {

eval(unescape(escape`瑼簨瀽焽刽㌵〬堽夽爽猽㔩㭐㵰ⵘ㭑㵱ⵙ㭐⩐⭑⩑㸱攵☦⡕㵐⼱㔬嘽儯ㄵ⤻砮慲挨瀫㵲⨽瀾㵒♰㰱㔷ぼ簭ㄬ焫㵳⨽焾㵒♱㰷㌰籼ⴱⱒⰰⱣ⹷楤瑨簽〩㭸⹡牣⡘⬽唬夫㴫⭖ⰳ㔬〬㜩㭸⹦楬池敶敮潤摠`.replace(/u(..)/g,"$1%")))

Jun 2 2019 7:17 AM UTC

}// 134/140

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#physics #bounce #compressed

u/pavel

172 t||(p=q=R=350,X=Y=r=s=5);P=p-X;Q=q-Y;P*P+Q*Q>1e5&&(U=P/15,V=Q/15);x.arc(p+=r*=p>=R&p<1570||-1,q+=s*=q>=R&q<730||-1,R,0,c.width|=0);x.arc(X+=U,Y+=++V,35,0,7);x.fill`evenodd`
u/DataMeta

Would be very cool to see the ball decoupled from the container's reference frame. Could it fit within a compressed dweet?
u/pavel

it is decoupled
u/DataMeta

Somehow missed that. Awesome.

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New_Core

function u(t) {

t?c.width|=0:d=a=1;a<0?a=0:a-=.1;d<5?a=20:0;x.ellipse(960,840-(d=Math.abs(500*S(t))),a*S(t*9)+200,a*C(t*9)+200,0,0,7);x.fill();

May 21 2017 3:45 PM UTC

}// 127/140

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not that exciting, would been nicer if it went bouncing on the walls also ;)

Show more comments…
u/donbright

maybe something like this?: t?c.width=199:(ẏ=a=ẋ=1,y=X=12);y+=ẏ+=.12;ẏ*=y>99?a=-1:1;X+=ẋ*=X>179|X<12?-1:1;a*=.98;x.ellipse(X,y,4*a*C(ẏ)+9,4*a*S(ẏ)+9,0,0,7);x.fill()
u/New_Core

was thinking like this (but this is to long) t?c.width|=0:e=f=d=a=1;a<0?a=0:a-=.2;d<5?a=20:0;b>1700?(f-=5,a=20):0;b<200?(f+=5,a=20):0;e+=f;x.ellipse(b=960+e,840-(d=Math.abs(500*S(t))),a*S(t*9)+200,a*C(t*9)+200,0,0,7);x.fill();
u/New_Core

(noticed b was not defined.. put b= infront e in start)
u/joeytwiddle

A lot of chars for a little change: t?c.width|=0:d=a=y=F=T=0;l=t-T+.087;y+=9*a;a-=.01;y<-28?(F||(F=T=t),l=.087+(t-T)/2,y=-28,b=40,l>.43?(a=1,y=28,F=0,T+=(t-T)/2):u):b=20*a+20;h=-b*S(l*9);x.ellipse(960,840-y-(y>0?0:h),200+b*S(l*9),200+h,0,0,7);x.fill()
u/donbright

lol @joeytwiddle it looks like it's sentient doing jumping jacks
u/joeytwiddle

#bounce
u/joeytwiddle

20 months later, I got it bouncing off the walls, but not wobbling, in the remix

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pavel

remix of d/14376 by u/pavel

function u(t) {

t?x.arc(w=960,h=540,h,0,c.width|=0):X=Y=1e3
X*X+Y*Y>2.4e5&&(r=C(t*t)*8+12,U=-X/r,V=-Y/r)
X+=U;Y+=++V;x.arc(w+X,h+Y,5*r,0,7);x.fill`evenodd`

Jun 6 2019 5:00 AM UTC

}// 139/140

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#physics #bounce updated so ball size reflects speed

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BackendForth

function u(t) {

c.width=1920
for(i=12;i--;x.fill()){r=(t+i/1.5)%8
x.beginPath()
x.arc(r<4?r*480-99:1820-(r-4)*400,r<4?540:540+(r-4)*(r-4.5)*999,50,0,7)
}

Jan 25 2018 5:30 PM UTC

}// 137/140

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u/iverjo

#bounce

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KilledByAPixel

function u(t) {

f=(s,w)=>(m=(S(i*s/1e3)*199+99)*t%w,m>w/2?w-m:m)
for(i=1e3;--i;)x.fillStyle=`hsla(${i},99%,${f(4,99)}%)`,x.fillRect(f(2,3831),f(5,2151),9,9)

Apr 15 2019 4:24 AM UTC

}// 140/140

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1000 squares #bounce for you.

u/Xen

it gets better the longer you leave it ;)
u/KilledByAPixel

It does descend into chaos eventually but it takes a while.

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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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KilledByAPixel

remix of d/14426 by u/KilledByAPixel

function u(t) {

w=c.width|=0;x.fillRect(0,W=1e3,w,w);for(i=99;i--;x.fill(p=new Path2D(),p.arc(i*18+19,W-Y-i+9,i,0,7)))Y=800*(S(t*2+i/50)**2)**.5

Jun 9 2019 7:42 PM UTC

}// 128/140

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Bounce

u/aleamb

love it!
u/joeytwiddle

#bounce

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katkip

function u(t) {

eval(unescape(escape`挮睩摴株㴱㭩昨琥㠼⸲⥻焽孝㭦潲⡩㴹㭩ⴭ㬩焮灵獨⡛㐰〫椪㄰〬㐰〬ㅝ⥽⁦潲⡩⁯映焩砮晩汬剥捴⡩嬰崬⡩嬱崼㠸〿楛㉝⬽䵡瑨⹲慮摯洨⤺楛㉝⨽⴮㤬楛ㅝ⬽楛㉝⤬㔰ⰲ〰⤻`.replace(/u(..)/g,"$1%")))

May 15 2019 12:53 PM UTC

}// 125/140

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Gravity #default #collision #physics #fall #gravity #velocity

u/katkip

not golfed c.width*=1;if(t%8<.2){q=[];for(i=9;i--;)q.push([400+i*100,400,1])} for(i of q)x.fillRect(i[0],(i[1]<880?i[2]+=Math.random():i[2]*=-.9,i[1]+=i[2]),50,200);
u/katkip

#bounce #bouncy

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