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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tomxor

function u(t) {

I=x.getImageData(0,0,1920,1080);D=I.data
for(C=0xFF,i=0;p=i*4+3,C;i++)D[p]^=C,C^=D[p]
x.putImageData(I,0,0)

Jan 27 2020 10:11 PM UTC

}// 107/140

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Bruteforce 1bit #castle

u/tomxor

(fullscreen and look top left to see progress) ... although it will take 2^(1920*1080) / (60*86400*365) = x10^624206 years to permute all possible values for 2073600 bits... that is roughly 624 times the estimated lifespan of the universe based on bigbang to heat-death.
u/Xen

can we have quantum dweet on this please, i've run out of food already
u/tomxor

:P

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rodrigo.siqueira

remix of d/17370 by u/rodrigo.siqueira

function u(t) {

x.fillRect(0,0,2e3,2e3)
for(i=3e3;i--;)Z=-2.5+i/600,X=C(i+t*2)/Z,Y=S(i+t*2)/Z,x.clearRect(960-Y*150+Z*S(t*3)*59,540+150*(X*C(t)-Z*S(t)),6,6)

Jan 25 2020 12:20 AM UTC

}// 140/140

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Rotating double space-time fabric symmetry

u/katkip

Beautiful!!! Awesome
u/rodrigo.siqueira

#spacetime

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rodrigo.siqueira

remix of d/17369 by u/rodrigo.siqueira

function u(t) {

c.width+=0
for(i=2e3;i--;)Z=i/300,
X=C(i/80+t*4)*(i%2)+4*(i%2),
Y=S(i/80+t*4),x.fillRect(980+150*(X*C(t/4)-Z*S(t/4)),500-Y*150+Z*55,4*Z,4*Z)

Jan 25 2020 1:27 AM UTC

}// 140/140

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The helix and it's shadow

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katkip

function u(t) {

c.width*=1;for(i=99;i--;)for(j=9;j--;)x.fillStyle=R(z=S(j*j)*90+C(i+t)*20,z,z),x.fillRect(i*99,540+j*69+S(i%2)*69+S((i/5)%2|0)*69,99,69)

Jan 25 2020 9:27 AM UTC

}// 136/140

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#castle

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katkip

remix of d/17336 by u/yukulele

function u(t) {

c.width^=j=0;for(i=0;i<1e3;j=i++)x.beginPath(x.fillStyle=R(z=S(i/99+t*9+i*S(i/4)/999)*255))+x.arc(960+C(j)*i,540+S(j)*i,2+i/4,0,7)+x.fill()

Jan 25 2020 9:34 AM UTC

}// 139/140

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#red

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denzen

function u(t) {

with(a=60,x)fillText("🏰",0,12),fillStyle=R(...getImageData(X=t*a%16,Y=t&15,1,1).data.map((c,i)=>c&~(t*a%99))),fillRect(540+X*a,150+Y*a,a,a)

Jan 23 2020 6:02 PM UTC

}// 139/140

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glitched #castle

u/tomxor

Cute!
u/katkip

nice

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KilledByAPixel

function u(t) {

for(c.width|=i=7,x.scale(19,9);i--;x.fillText("②ⓀⓅⓁⓊⓈ✈".split``[i],q%256-69,59+2*(i<6)*S(i+9*t)+S(q>>8)*40))x.fillStyle='#2'+i*19,q=t*30+i*9

Jan 25 2020 5:00 AM UTC

}// 140/140

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2KPlus Jam Starts in 1 Week! https://itch.io/jam/2kplus-jam

u/katkip

ready

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rodrigo.siqueira

remix of d/17369 by u/rodrigo.siqueira

function u(t) {

for(c.width=i=2e3;i--;)Z=i/350,x.globalAlpha=.3,X=C(i/9+t)/Z,Y=S(i/9+t)/Z,x.fillRect(980+150*(X*C(t)-Z*S(t)),500-Y*150+Z*S(t*2.3)*59,9,9)

Jan 25 2020 12:18 AM UTC

}// 137/140

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Space time rotator

u/rodrigo.siqueira

This is the same helix from the previous dweet but now with perspective applied:: X/Z and Y/Z (divided by Z, so the image will get smaller when Z is higher)

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Xen

remix of d/17328 by u/emgordon154

function u(t) {

x.font="9em'"
p=P=>t*t**P%256
x.fillStyle=R(p(9),p(6),p(3),.1)
x.fillText(x.drawImage(c,1,0,1920,1e3,-19,-53,1952,1098),848,555)

Jan 24 2020 4:07 PM UTC

}// 128/140

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128: "I haven't got a clue what's going on"

u/katkip

#xweet

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KilledByAPixel

remix of d/15973 by u/KilledByAPixel

function u(t) {

for(i=c.width|=k=960;z=--i/9;x.lineWidth=29)x.arc(550+z*S(j=i/k)*7,700-z*C(j)*9,3e3/z,m=k*(C(j)*i**.7/k*9-t/19)/9,m);x.stroke()

Jan 23 2020 9:06 AM UTC

}// 127/140

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Unwind