Dweets awesomed by u/Koi

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: #Opposites

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rodrigo.siqueira

function u(t) {

for(c.width=w=i=2e3;i--;)
X=S(i*i),Y=S(i),ℵ=C(Math.atan2(X,Y)-t)*Math.hypot(X,Y),
K=w/2,x.fillRect(w*ℵ/(Z=4+C(t)+X*X-Y*Y)+K,w+K*(ℵ-6)/Z,7,8)

Jun 26 2019 7:01 PM UTC

}// 140/140

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The Hyperbolic Paraboloid (z=x²-y²). The S(i*i) and S(i) are random number generators between -1 and +1. The atan2 and hypot are used to calculate 3d object rotation (Euler equations could also be used, as seen on /d/12086). Thanks to u/cantelope for the Tiny 3D Engine Tutorials: https://cantelope.org/tiny_3D/ and https://cantelope.org/3D/ #math #hypot #D3 #hyperbolic #surface

u/cantelope

:D
u/rodrigo.siqueira

There is an interesting fact that the Pringles potato chips are a truncated hyperbolic paraboloid. The strength of the shape helps to prevent them from breaking while stacked. The curvature of the shape improves resistance to tension and compression forces. Remember this next time you eat a hyperbolic paraboloid.

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KilledByAPixel

remix of d/14627 by u/KilledByAPixel

function u(t) {

x.fillRect(0,0,c.width|=0,2e3)
x.fillStyle="#5CF"
for(i=8;i--;x.arc(960+250*C(b),540+250*S(b),250,z=t+b,z+3.142))b=i*.7854
x.fill('evenodd')

Jun 22 2019 6:05 PM UTC

}// 140/140

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Half Circle Pinwheel

u/katkip

#flower

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cantelope

function u(t) {

with(x)for(k=i=1080;i---99;beginPath(fill(arc((i**3+p)%2e3,(i*i+p)%k,k/(i/(6+S(t*4+i)*6)),0,7))))fillStyle=`hsla(${i+(p=t*250)},99%,60%,.05`

Jun 22 2019 3:15 AM UTC

}// 140/140

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katkip

function u(t) {

c.style.background="#205";x.beginPath(x.strokeStyle='#fff1');for(i=9;i--;)x.lineTo(960+C(-(q=i*i*t)%3+5)*360,540+S(-q%3+5)*360);x.stroke()

Jun 20 2019 2:19 PM UTC

}// 138/140

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#moon #realistic A realistic moon with patterns on it.

u/Xen

love it!
u/KilledByAPixel

That's no moon...
u/katkip

It's a space station then

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username

remix of d/14629 by u/username

function u(t) {

eval(unescape(escape`𩡯𬠨𨰮𭱩𩁴𪀽𛐱𛁪🐴𞱪𛐭𞰩𩡯𬠨𪐽𞐻𪐭𛐻𚑷𪑴𪀨𮀩𩡩𫁬𤱴𮑬𩐽𨁨𬱬𚀤𮰨𪠫𜐩𚡴𚠹𯐬𝐶𙐬𝀳𙑠𛁢𩑧𪑮𤁡𭁨𚁦𪑬𫀨𨑲𨰨𜐵𜀫𤰨𨐽𛠷𞐪𪐫𞐵𛑴𙐱𛰮𝠪𘐨𭀦𜰭𪠩𚐪𚁲🐨𝀶𚰱𜠪𠰨𭀩𚐪𘐡𪐫𪐥𜠪𜐶𚐬𝀶𚱃𚁡𚐪𬠯𜠫𪠪𜠷𛀵𛑪𛀰𛀷𚐩𚐻`.replace(/u../g,'')))

Jun 18 2019 11:56 AM UTC

}// 138/140

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perspectives

u/Ratstail91

Wait, that's illegal.

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KilledByAPixel

function u(t) {

H='♥'
eval(unescape(escape`𩡯𬠨𮀮𩡩𫁬𤡥𨱴𚀰𛀰𛁩👆🐲𩐳𛁆𚐻𪐭𛐻𮀮𩡯𫡴🐢𝰰𩑭𙰢𚑸𛡣𫁥𨑲𤡥𨱴𚀨𤰨𪐩𚠱𩐹𛑴𚡩𛰵𚐥𡠬𪐪𞐥𡠬𪠽𪐥𞐬𪠩𞱸𛡳𪁡𩁯𭱃𫱬𫱲🐢𘱆𡡆𘠻𩡯𬠨𪐽𞐻𛐭𪐻𮀮𩡩𫁬𥁥𮁴𚁈𛀶𜰲𛀸𞀰𚐩𮀮𬱨𨑤𫱷𠡬𭑲👩𚠹𚰴𝐪𤰨𭀪𝀩`.replace(/u../g,'')))

Jun 18 2019 2:31 AM UTC

}// 137/140

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Total Eclipse of the Heart ♥ ~ Version 2

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rodrigo.siqueira

remix of d/14642 by u/rodrigo.siqueira

function u(t) {

A=Z=a=b=t-3;s=180
for(i=1e4;--i;)x.fillStyle=R(a*55,b*20,S(b-a)*99),x.fillRect(850+a*s,350+b*s,.7,.8),
a=1-b+Math.abs(a-S(a+2))/2,
b=A,A=a

Jun 17 2019 3:04 PM UTC

}// 138/140

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Patterns from the Gingerbread Man #attractor

u/Xen

sexy!
u/katkip

Nice #chaos
u/rodrigo.siqueira

#gingerbreadman
u/iverjo

Fascinating!
u/Qwitter

Wow, islands, everywhere

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KilledByAPixel

remix of d/14570 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑦𫱲𚁩🐰𛁆👶🐾𩡩𫁬𤱴𮑬𩐽𤠨𭠬𭠬𭠩𞱩𚰫🀱𜐹𞱲𩑳𭁯𬡥𚁸𛡦𪑬𫀨𮀮𨑲𨰨𞐶𜀫𝐪𦠬𝐴𜀬𜰰𜀬𜀬𝰩𚐩𚑢𩑧𪑮𤁡𭁨𚁳𨑶𩐨𦠽𚁩🠶𜀩𚠹𚡓𚁩𚠪𜰫𭀩𚐩𛁆𚁩𚱚𚰹𞐪𘑚𚐬𩡩𫁬𚁲𩑣𭀨𜀬𪐪𞐬𜡥𜰬𞐩𚐬𡠨𜠹𜀭𪐭𦠩𛁢𩑧𪑮𤁡𭁨𚁣𫁩𬀨𚐩`.replace(/u../g,'')))

Jun 13 2019 7:14 PM UTC

}// 140/140

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Ocean Sunset

u/katkip

#waves #natural #realistic #landscape #moon
u/katkip

(i mean #sun )
u/KilledByAPixel

It can be a moon if you want it to be!
u/katkip

hehe

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username

function u(t) {

t?onmousemove=_=>e=_:e={x:666,y:420}
x.beginPath()
for(i=c.width+=0;i--;x.lineWidth=14)x.lineTo(i,542+e.y*S(6.283*(t-i/e.x)))
x.stroke()

Jun 10 2019 12:46 PM UTC

}// 136/140

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harmonic wave equation (in javascript notation y=(x,y)=>A*S(2*Math.PI*(t/T-x/λ))) - move mouse to change wave length and amplitude (period is fixed at T=1 for simplicity)

u/aleamb

#interactive
u/aleamb

#math
u/marc8

Remixes https://www.dwitter.net/d/10105
u/username

u/marc8 I guess we had the same idea. However, my intention was to show a harmonic wave equation using d/14535 and then I just remixed that
u/username

actually, d/14535 does not do that. I did not post the dweet I had originally drafted. it used the above equation (in my very first comment) in code and that is exactly like that

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DataMeta

remix of d/14515 by u/DataMeta

function u(t) {

with(x)for(j=768;j--;beginPath(fill()))
g=257+t,fillStyle=R(o=C(g&j)*255,o,o,.5),
arc(64*(j%31),64*(j/31|0),Math.abs(S(t)*49),0,7)

Jun 9 2019 7:38 PM UTC

}// 130/140

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u/metamero

cool
u/katkip

Wait wow
u/joeytwiddle

Super. Reminds me of http://www.pouet.net/prod.php?which=564 hj fwdd

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