Dweets awesomed by u/mildlybean

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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Current theme challenge: #Opposites

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jlidbeck

remix of d/15711 by u/jlidbeck

function u(t) {

c.width=400
x.translate(199,99)
for(j=1e3;j>>=1;)for(i=j;i--;)a=C(t+i),u=a*S(j),v=a*C(j),w=S(t+i),x.fillRect(99*(C(t)*u+S(t)*w),99*v,2,2)

Sep 14 2019 4:28 AM UTC

}// 137/140

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jlidbeck

function u(t) {

s=200
c.width=s*4
x.translate(s+s,s)
for(j=49;--j;)for(i=49;--i;)u=C(t+i)*S(j),v=C(t+i)*C(j),w=S(t+i),x.fillRect(s*(C(t)*u+S(t)*w),s*v,1,1)

Sep 13 2019 11:59 PM UTC

}// 139/140

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KilledByAPixel

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑴🱔👴🠳🰱𞡴𛰳𞡦𪑬𫁒𩑣𭀨𜀬𜀬𜡥𜰬𜡥𜰩𛁢👍𨑴𪀮𨑢𬰨𜰭𝀪𥀩𛁦𫱮𭀽𨀤𮱱🐹𝠰𯐠𙁻𝀰𜀪𥁽𬁸𘁡𬡩𨑬𨀬𩡩𫁬𤱴𮑬𩐽𨁨𬱬𚀤𮱴𚠹𞑽𘀹𞐥𝐰𙑠𛁦𪑬𫁔𩑸𭀨𙱂𣱕𣡃𡐧𛁱𛑔𚡱𛀵𜀰𛑢𚠱𝠵𚐬𩡩𫁬𥁥𮁴𚀧𠡁𠱋𙰬𬐭𥀪𝠰𜀬𝰱𜀫𨠪𜐲𝐩`.replace(/u../g,'')))

Sep 13 2019 12:53 AM UTC

}// 140/140

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Play my JS13k game BOUNCE BACK! https://js13kgames.com/entries/bounce-back

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Blacklink

function u(t) {

c.width=b=1920
for(var a=0;a<b;a++){m=C(.01*a)*90+99
v=S(t+S(t)*.01*a)*S(t)*300+540
x.fillRect(a,0,1,v-m)
x.fillRect(a,v+m,1,1080-v+m)}

Sep 12 2019 10:06 AM UTC

}// 135/140

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Just a weird test thing

u/0x04

Maybe weird, but cool 😎

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jlidbeck

remix of d/15668 by u/mildlybean

function u(t) {

for(i=c.width=1000;i-=20;)for(j=960;j-=20;)z=S(i/55-C(j/55+t))*S(j/55+t/2-C(i/55))*9+9,x.fillRect(i,j,z,z)

Sep 11 2019 10:47 PM UTC

}// 106/140

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django

function u(t) {

with(x){w=c.width*=1;w/=2;h=540;
beginPath();
for(i=0;i<800;i++){a=(S(t+i+(t/20)*C(t-i))+1)*w;b=(C(t+i)+1)*h;
lineTo(a-5,b-5)}
stroke();
}

Sep 10 2019 11:00 PM UTC

}// 138/140

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elasticity

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mildlybean

function u(t) {

t%=8;t=~~(t/2)+(~~t%2?t%1:0);F=f=>~~f?999-S:0;for(c.width|=i=4;i--;x.rect(460+F(i%3),41+F(i/2),S,S))S=(i^t?i<t:t%1)*333+333;x.fill`evenodd`;

Sep 10 2019 9:21 PM UTC

}// 140/140

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u/joeytwiddle

#loop

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taupelink

function u(t) {

m=70;z=1e3;r={valueOf:Math.random};x.fillStyle=R(0,g=r*r*m,g,.4),x.fillRect(r*2e3-m,r*z-m,r*z,r*z);s=r>.2;x.clearRect(r*2e3,r*z,s?2:m,s?m:1)

Sep 10 2019 2:04 AM UTC

}// 140/140

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d/15672

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mildlybean

function u(t) {

for(i=c.width+=0;i-=10;)for(j=1080;j-=10;)x.fillRect(i+t+C(t),j+t,9,9)

Sep 9 2019 7:33 PM UTC

}// 70/140

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I can't be the first person to do this

u/0x04

There is always a first time 😏
u/lionleaf

#grid Works a whole lot better in fullscreen :) Without fullscreen I'm getting aliasing effects
u/metamero

#moire #opticalillusion

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nystrand

function u(t) {

for(r=777,i=2e3;i--;x.fillRect(a+r,b+r,29,19))a=t*i*i*r%2e3-r,b=i-r,g=i/3+S(t)*a/24,x.fillStyle=R(A=S(t+a/g)*S(C(t/2)+t-b/g)*i,A+a/8,A+b,.3)

Sep 9 2019 7:02 PM UTC

}// 140/140

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Show more comments…
u/yonatan

Nice one! How does it work?
u/yonatan

Oh I get it, a and b are coords used to generate the pixel color with g as tilt
u/pavel

very nice
u/13thptr

great style
u/aleamb

fucking awesome!!
u/KilledByAPixel

👍
u/magna

wowza
u/iverjo

Wow, very nice!
u/vain

Incredible

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