Dweets awesomed by u/chatmasta

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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chatmasta

function u(t) {

c=(y)=>Math.floor(255*S(Math.PI*(t+y/3))**2);
x.fillStyle = R(c(0),c(1),c(2));
x.fillRect(0+(t*2000),0,t*2000,1000/t*t);

Nov 30 2018 5:29 AM UTC

}// 121/140

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u/katkip

#rainbow

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pavel

remix of d/11192 by u/pavel

function u(t) {

for(k=c.width|=w=120;i=k-->>6;x.rect(--j*w+o(t),(i-2)*w+o(t-1.6),s=k%2?j+i&1&&w:60,s))j=k/2&31,o=n=>k%2*w/(2+1e9**C(n))
x.fill('evenodd')

Nov 30 2018 2:37 AM UTC

}// 137/140

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metamero

remix of d/11172 by u/metamero

function u(t) {

eval(unescape(escape`挮睩摴栽ㄹ㈰㭣⹳瑹汥⹢慣歧牯畮搽✣㤹㤧㭦潲⡰㴮㔻瀼㤹㬫⭰⥦潲⡱㴰⸵㭱㰹㤻⬫焩睩瑨⡸⥢敧楮偡瑨⠩ⱡ牣⡲㵰⨹㤬猽焪㤹ⰱ㌬〬㜩ⱦ楬汓瑹汥㴧⍦晦✬晩汬⠩ⱦ楬汓瑹汥㵒⠩ⱦ楬汒散琨爭㤱ⱳⴹㄬ㠳ⰸ㌩`.replace(/u(..)/g,"$1%")))

Nov 27 2018 12:01 PM UTC

}// 140/140

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Find the Black Dots - Scintillating Grid Illusion

u/metamero

c.width=1920;c.style.background='#999';for(p=.5;p<99;++p)for(q=0.5;q<99;++q)with(x)beginPath(),arc(r=p*99,s=q*99,13,0,7),fillStyle='#fff',fill(),fillStyle=R(),fillRect(r-91,s-91,83,83)
u/metamero

#OpticalIllusion #Scintillating #Grid #Illusion
u/katkip

#illusion
u/metamero

#ScintillatingGridIllusion

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chatmasta

remix of d/10400 by u/chatmasta

function u(t) {

for(c.width^=0,i=100;0<i;i-=5)with(x)beginPath(),arc(960,540,i*(3-S(t))%540,i/20,i/9*S(t),0),lineWidth=i/5+t-S(t),stroke();

Oct 13 2018 9:44 PM UTC

}// 123/140

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u/Shirou14

So this is how Ubisoft made their logo...

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chatmasta

function u(t) {

x.ellipse(960,540,540,540,1,t*Math.PI,S(t)*Math.PI*2);x.stroke();

Oct 13 2018 9:19 PM UTC

}// 65/140

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shell

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rbong

function u(t) {

Y=c.height^=0
while(Y-=40){p=m=>S(Y+t+90*m)*250+250;[0,1,2,3].map(m=>{a=p(m),b=p(m+1%4),x.fillStyle=R(a,b,50);a<b&&x.fillRect(a,Y,b-a,40)})}

Oct 13 2018 8:48 PM UTC

}// 140/140

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Classic Twister Effect

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u/rbong

#classic #twister
u/BirdsTweetCodersDweet

Remix at d/10435
u/BirdsTweetCodersDweet

And another at d/10436, cause I couldn't help myself with the colors
u/Purpzie

Shortened by 10 characters: c.height|= p=m=>(S(Y+t+m*90)+1)*250;for(i=108;i--,Y=(0|i/4)*40;a<b&&x.fillRect(a,Y,b-a,40))x.fillStyle=R(a=p(m=i%4),50,b=p(m+1%4))
u/Purpzie

Oh woops it should be c.height|=p=m=>(S(Y+t+m*90)+1)*250;for(i=108;i--,Y=(0|i/4)*40;a<b&&x.fillRect(a,Y,b-a,40))x.fillStyle=R(a=p(m=i%4),50,b=p(m+1%4))
u/Purpzie

Okay dwitter hates me now, there should be a newline afterc.height|=
u/Purpzie

Honestly there should be an edit button for comments. Forgot to mention I changed the color but it has no effect on code length

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chatmasta

function u(t) {

for(c.width^=0,x.strokeStyle="red",i=100;0<i;i-=10)with(x)beginPath(),arc(960,540,i*(3-S(t))%540,0,12*S(t),0),lineWidth=i/5+t-S(t),stroke();

Oct 13 2018 8:45 PM UTC

}// 140/140

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target practice

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rodrigo.siqueira

function u(t) {

c.width^=0
for(y=-4;y<4;y+=.1){
for(X=-4;X<4;X+=.1){
x.fillRect(960+X*210*S(t*.6)+y*18,560-S(X*X+y*y)/(X*X+y*y)*240*S(4*t)+y*85*S(t),3,3)
}}

Oct 13 2018 8:44 PM UTC

}// 140/140

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3D Sombrero Equation

u/aleamb

cool!!

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chatmasta

remix of d/10395 by u/chatmasta

function u(t) {

x.fillStyle="red";for(x.clearRect(0,0,1960,1080),x.beginPath(),k=1960;k>=0;k-=15)x.fillText('+/+/+/+/+/+/+/+/+',k+1960/t,540-140*S(t+k/50));

Oct 13 2018 7:38 PM UTC

}// 140/140

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chatmasta

remix of d/10391 by u/chatmasta

function u(t) {

for(x.clearRect(0,0,1960,1080),x.fillRect(0,0,1960,1080),x.beginPath(),k=1960;k>=0;k-=15)x.fillText('💧',k+1960/t,540-140*S(t+k/50));

Oct 13 2018 7:33 PM UTC

}// 132/140

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