New #newtonscradle 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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ciaccodavide

remix of d/20700 by u/ciaccodavide

function u(t) {

c.width|=1
P=C(t*4)*99
for(i=0;i<9;i++)
x.fillRect(400+i*100+(i===0&&P>0?-P:i===8&&P<0?-P:0),400,50,200)

Nov 19 2020 8:34 AM UTC

}// 104/140

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Newton's cradle #default

u/ciaccodavide

#newtonscradle

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ciaccodavide

function u(t) {

P=C(t*4)*99
for(c.width|=i=9;i--;)X=440+i*121,x.moveTo(X,0),x.arc(X+(i===0&&P>0?-P:i===8&&P<0?-P:0),540,60,4.7,11)
x.stroke()

Nov 19 2020 8:19 AM UTC

}// 125/140

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Newton's cradle

u/ciaccodavide

#newtonscradle

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pavel

remix of d/11463 by u/cantelope

function u(t) {

with(x)for(c.width|=i=6,scale(9,9),q=C(4*t);i--;stroke(),fill())moveTo(X=64+17*i,0),arc(X-60*S(a=(q>0?i:i-5)?0:q),60*C(a),8,a-Math.PI/2,9)

Dec 18 2018 12:32 AM UTC

}// 138/140

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u/cantelope

ah! of course. i knew there had to be an easier way ;P
u/katkip

Haha nice
u/iverjo

#newtonscradle
u/pavel

For a more realistic look replace (q>0?i:i-5)?0:q with (q>0?i:i-5)?q/50:q

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cantelope

function u(t) {

eval(unescape(escape`挮睩摴栽ⴱ㭑㴨堬夽䌨瀩⩤⤽㹻睩瑨⡸⥬楮敔漨堬天ⱙ☦⡸子㴧扥杩湐慴栧崨獴牯步⠩⤬晩汬⡡牣⡘ⱙⰲ〬〬㜩⤩紻儨搽ㄲ㤬〩ⱱ㵓⡴⨴⤬儨搫匨瀽焼〿焺〩⩤⤬硛偝⠩㭑⡥㴱㘹ⰰ⤬儨攫匨瀽焾〿焺〩⩤⤻`.replace(/u(..)/g,"$1%")))

Dec 17 2018 11:21 PM UTC

}// 138/140

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c.width=-1;Q=(X,Y=C(p)*d)=>{with(x)lineTo(X,Y),Y&&(x[P='beginPath'](stroke()),fill(arc(X,Y,20,0,7)))};Q(d=129,0),q=S(t*4),Q(d+S(p=q<0?q:0)*d),x[P]();Q(e=169,0),Q(e+S(p=q>0?q:0)*d)

u/iverjo

#newtonscradle

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