Dweets awesomed by u/artfarnaa

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: #Food

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ycjung

function u(t) {

c.width|=0;for(i=0;i<100;i++)for(j=0;j<10;j++){x.fillRect(960+i*10*S(j),540+i*10*C(i*(S(t/20))),i%(j*j),i*j/10);}

Feb 11 2019 3:28 PM UTC

}// 113/140

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False sense of space

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23_Skidoo

remix of d/12194 by u/23_Skidoo

function u(t) {

for(s=24,d=480,i=4e3;i--;f=C(X/d+t/2)/T(Y/d+s)+t,x.fillStyle=`hsla(${S(f/6)*d} 66%${40+S(f*6)*s}%`)x.fillRect(X=i%81*s,Y=~~(i/81)*s,s,s)

Feb 9 2019 5:58 AM UTC

}// 136/140

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katkip

function u(t) {

c.width^=0;f=(X,Y,s)=>{if(s>10)x.lineTo(X,Y),f(X+S(t+s)*s/5,Y+C(t+s)*s/5,s/(1.01+t/250))}
x.lineWidth=5;f(960,540,500),x.stroke()

Feb 8 2019 5:04 PM UTC

}// 129/140

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#organic things that does this #recursive

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pavel

remix of d/2336 by u/cantelope

function u(t) {

for(i=k=c.width|=0;i--;x.arc(X,Y,k*k|1/z,k=0,7))z=1-(t*30+i)%99/99,x.moveTo(X=960*(z+i**.9%1-.5)/z,Y=540*(z+i**.6%1-.5)/z)
x.fill('evenodd')

Feb 7 2019 7:27 AM UTC

}// 140/140

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Golfed enough for round bodies

u/mxfh

Welcome to the #arc side
u/13thptr

lol

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23_Skidoo

remix of d/12190 by u/23_Skidoo

function u(t) {

t/=8
for(s=24,d=360,i=4e3;i--;f=C(X/d+t)-S(Y/d+t)+t,x.fillStyle=`hsla(${S(f)*d},66%,${75+S(f*81)*s-Y/15}%`)x.fillRect(X=i%81*s,Y=i/81*s,s,s)

Feb 6 2019 4:37 AM UTC

}// 140/140

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SMON

remix of d/12066 by u/thorbear

function u(t) {

t?0:z=y=c=a=1.4,b=1.56,d=-6.56,x.globalAlpha=.01;
for(i=2e4;--i;)n=d*S(a*z)-S(b*y),y=c*C(a*z)+C(b*y),z=n,x.fillRect(z*125+950,y*200+500,4,4)

Feb 1 2019 1:48 PM UTC

}// 140/140

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Okay, now with the original parameters!

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rodrigo.siqueira

function u(t) {

x.beginPath()
for(c.width^=i=0;i<3e3;i++)x.lineTo(X=540,X),x.lineTo(960+X*C(i/2),X+C(t+i+S(i/4+t))*360)
x.strokeStyle=`#0452`
x.stroke()

Jan 30 2019 9:35 PM UTC

}// 136/140

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Rotating curved surface

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rodrigo.siqueira

remix of d/11965 by u/pavel

function u(t) {

for(x.fillRect(0,0,i=3e3,i);Q=S(--i*i);x.clearRect(960+150*(S(b)*4+S(i+t)*Q),540+150*(C(i*i)-(t%4>2?T(b+t):S(b+t))),4,4))b=i%6+t+(t%2>1?0:i)

Jan 28 2019 2:40 PM UTC

}// 140/140

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Torus, spheres, flow and bubbles

Show more comments…
u/rnbw

now THIS is a demo!
u/katkip

Yeah he win
u/13thptr

woah
u/joeytwiddle

Superb! Golf the end with i*(t%2>1) or i*!(t&1)
u/rodrigo.siqueira

Thanks @joeytwiddle for the golf trick. i*(t&1) also works and it's even shorter. And I found that t%4>2?... can be converted to t&2?... It works as a counter to change the function each 2 seconds.
u/yonatan

Also, since T and S take the same arguments (t%4>2?T(b+t):S(b+t)) can be (t&2?T:S)(b+t)
u/lionleaf

Wow! Now we're talking
u/vain

Wow, three fx in this tiny code? Great!

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katkip

remix of d/11977 by u/katkip

function u(t) {

c.width*=1;for(i=900;i--;)k=S(t+i)*t,l=500-C(k-i)*500,x.fillRect(960+C(k)*l,540+S(k)*l,10,10)

Jan 28 2019 12:50 PM UTC

}// 93/140

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White hole. I rarely wash myself because I'm lazy :(

u/katkip

Haha you guys liked this dweet only to be the first comment more visible lmao?

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joeytwiddle

remix of d/11968 by u/joeytwiddle

function u(t) {

c.width|=0;o=t*7%15.7-22/7;j=o>0;w=(99-j*80-j*o*1.6)*S(!j*o+j*o*4);x.ellipse(920,850-j*600*S(o/4)-w,200-w,200+w,0,0,7);x.fill()

Jan 27 2019 5:54 AM UTC

}// 127/140

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New_Core's bouncing ball + squash = jumping jack

u/katkip

Nice
u/katkip

#physics #jelly
u/DataMeta

Delightful!
u/joeytwiddle

Change o*4 to o*3 for a slower wobble

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