Dwitter - javascript demos in 140 characters

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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mistrfu

function u(t) {

c.width|=f=(f,y,x)=>f+f*y(x)
for(i=~~((5-3*C(t/3))*8e2);i--;)x.lineTo(f(960,C,i+t/125),f(540,S,T(C(t/9e3))*i))
x.stroke()

Sep 26 2024 7:00 PM UTC

}// 122/140

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b4d.r00m

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lewdev

remix of d/32518 by u/baegus

function u(t) {

for(x.reset(i=0),x.translate(960,560);i<190;i++)x.fillStyle=R(x.rotate(5),i),x.fillRect(i*i*S(t)**6,i,1e4*S(t),1e4)

Sep 26 2024 11:37 PM UTC

}// 115/140

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Say "Green Cheese!" (#golfed -10b) Removed 2b to turn it green. Not sure why x.rotate(5) was equal to S(t)

u/baegus

I do enjoy some nice green pesto gouda. Nice job with simplifying it! :)
u/lewdev

Thanks u/baegus

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rodrigo.siqueira

remix of d/32488 by u/rodrigo.siqueira

function u(t) {

c.style='filter:invert('
for(a=b=0,i=2e4;i--;a+=(r=i*t/b&1)/.3-b*S(a**1.5)/7-a*a/4,b-=C(a*5)+a*b/8)x.fillRect(a*5e3-700,360-b*420,.05,t<2)

Sep 26 2024 11:27 AM UTC

}// 138/140

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Growing from darkness #plant

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cantelope

function u(t) {

eval(unescape(escape`𩡯𬠨𪐽𨰮𭱩𩁴𪁼👨🐵𝀰𞱩𛐭𞱸𛡦𪑬𫁒𩑣𭀨𞐶𜀫𤰨𬐩𚡬𛰨𦠽𠰨𬀩𚡤𚰲𚐪𪀭𚁳👬𚠸𛱚𛱮𚐯𜠬𪀫𦐯𦠪𪀭𬰯𜠬𬰬𬰩𚑙👓𚁰🐨𣐽𣑡𭁨𚐮𨑴𨑮𜠨𦐽𠰨𬐽𪐯𝰷𚱴𚠹𚐪𚁬👩𛰱𝐰𜀩𛁚🐱𛑬𚐫𭀩𚠨𩀽𣐮𪁹𬁯𭀨𦐬𦠩𚐬𮀮𩱬𫱢𨑬𠑬𬁨𨐽𫠽𪐥𜠿𛠰𝐺𛠲`.replace(/u../g,'')))

Sep 25 2024 10:09 PM UTC

}// 140/140

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spiral

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baegus

function u(t) {

c.style.filter='invert('
x.reset()
for(i=Math.random()*300|0;i--;)
x.fillRect((i*i*S(i))-90,S(i*t)*1e3,i*.04,60)

Sep 26 2024 5:33 PM UTC

}// 112/140

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Very simple rain #rain

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baegus

function u(t) {

c.style.filter='invert('
with(x){reset()
fillStyle=R(0,0,255)
for(i=2e3;i--;)
setTransform(1,0,99,T(i-t),0,0)&
fillRect(0,S(i)-90,T(i),1e6)}

Sep 26 2024 9:15 PM UTC

}// 140/140

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SpinRays #sun #rays

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rodrigo.siqueira

remix of d/32415 by u/rodrigo.siqueira

function u(t) {

for(i=4300;i--;)for(k=24;k--;R=(80+k/i/C(i*i)*99)*t*70+k)x.fillRect(960+S(w=i/115-t*9)*R*2,540+C(w-.3)*R+k+i/999,1,1)

Sep 25 2024 1:31 PM UTC

}// 117/140

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The target

u/lewdev

Neat, it looks like craters within craters. The target was hit on the same spot by bombs of smaller and smaller blast radiuses.

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magna

remix of d/32487 by u/rodrigo.siqueira

function u(t) {

eval(unescape(escape`󨼮󬽴󮝬󩜮󩭩󫍴󩝲󟜧󬽥󬍩󨜨󙼻󩭯󬬨󦌽󦜽󪜽󝝥󝌻󪜭󛜻󮌮󩭩󫍬󤭥󨽴󚍙󚬱󝌵󚼱󜬷󜌬󦌪󞜵󛜱󜌰󜌬󛬳󛌱󚜩󦜽󚍴󚭩󚭙󙬸󚜫󚍙󛝘󚜯󜬫󦌯󝼬󦌫󟝓󚍙󛼲󚜪󚍙󚼳󛬱󝌩󛼨󜜮󜼫󤼨󭌩󚜻󩌽󮌮󩽥󭍉󫝡󩽥󡍡󭍡󚌰󛌳󛌱󞜲󜌬󜜰󞌰󚜬󮌮󬍵󭍉󫝡󩽥󡍡󭍡󚍤󛌰󛌰󚜻`.replace(/u../g,'')))

Sep 25 2024 2:43 AM UTC

}// 137/140

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u/tomxor

Woah, spooky etherial
u/cantelope

#underrated

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HardlyProductive

function u(t) {

for(c.width|=r=999;r--;){
for(theta=6.28;theta>0;theta-=0.2){
x.fillRect(999+r*S(theta+r*C(theta+t)/100),500+r*S(theta),3,3)
}
}

Sep 27 2024 6:46 AM UTC

}// 128/140

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baegus

function u(t) {

c.width*=1
x.translate(960,560)
for(i=0;i<190;i++){
x.rotate(5)
x.fillStyle=R(S(t),i,i)
x.fillRect(i*i*S(t)**6,i,1e4*S(t),1e4)}

Sep 25 2024 8:34 PM UTC

}// 127/140

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Say "Blue Cheese"! #Shutter #Tunnel