Dweets by u/Bugsy

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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Bugsy

function u(t) {

for(c.width|=r=999;--r;x.lineTo(960+C(r+t)*a,540+S(r+t)*a))a=r/2
x.stroke()

Jun 16 2018 4:32 PM UTC

}// 75/140

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The graph r=theta spinning around the origin. 65 characters to play with, so there's lots of remixing potential. Try messing around with the trig functions, it leads to some fun results

u/iverjo

Go fullscreen, stare at the center for 30 seconds, then look away from your screen (e.g. look at your keyboard). #opticalillusion
u/iverjo

#short

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Bugsy

function u(t) {

n=0;for(c.height=i=1080;i--;n=540*(1+S(t)*T((i%3.14)+1.57))){x.fillRect(960+(S(i*t/99)*200/Math.cosh((n-540)/40)),n,8,8)}

Jun 16 2018 12:42 AM UTC

}// 121/140

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Bugsy

function u(t) {

for(i=(b="!").length;i--;x.font='99px x',x.fillText(String.fromCharCode(a),99*i,99)){(a=b[i].charCodeAt(0))<"n".charCodeAt(0)?a=a+13:a=a-13}

Jun 15 2018 9:24 PM UTC

}// 140/140

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This Dweet does ROT13 if you type in lower case letters in place of the '!'

u/Bugsy

Thanks to @firegodjr on the Discord for help with the last few characters

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Bugsy

function u(t) {

i=c.width=2e3;c.onmousemove=e=>{X=e.x*3.5,s=t};for(a=540;i--;){d=Math.abs(X-i);x.fillRect(i,a+a*C(i/50)*C((d-a*(t-s))/300)*(i%2?1:-1),9,9)}

Jan 7 2018 1:12 PM UTC

}// 139/140

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Move your mouse to set the origin point

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Bugsy

remix of d/5687 by u/Bugsy

function u(t) {

s=t?s:0;a=i=c.width=2e3;c.onmousemove=e=>{p=e.x*3.5,s=t};for(;i--;){x.fillRect(i,538+(C(i/50)*(i-p)*C(t-s)/(2*(1+(t-s)/4)))*(i%2?1:-1),9,9)}

Jan 7 2018 12:13 PM UTC

}// 140/140

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Bugsy

remix of d/5687 by u/Bugsy

function u(t) {

a=i=c.width=2e3;for(;i--;){p=a*(t%2)/2;x.fillRect(i,538+C(i/50)*a*S((i-p)/318)/4*(i%8?1:-1),9,9)}

Jan 7 2018 3:48 AM UTC

}// 97/140

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u/GitAtMe

Very cool and so satisfying to watch!
u/Bugsy

Thank you :D

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Bugsy

remix of d/5675 by u/Bugsy

function u(t) {

a=i=c.width=2e3;for(;i--;){p=a*(t%2)/2;x.fillRect(i,538+C(i/50)*a*S((i-p)/318)/4*(i%2?1:-1),9,9)}

Jan 7 2018 3:45 AM UTC

}// 97/140

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Bugsy

function u(t) {

a=i=c.width=2e3;
p=960+a*S(t)/2;
for(;i--;){
x.fillRect(i,538+C(i/50)*275*(i-p)/999*(i%2?1:-1),9,9)}

Jan 7 2018 1:04 AM UTC

}// 100/140

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Bugsy

remix of d/5437 by u/BackendForth

function u(t) {

i=c.width=2e3;for(;i--;){s=i/99-t*4%27+5;w=2**(-s*s)*99+9;x.fillRect(i,540-w/2+S(i/43)*9+(i>960?i/2-480:0)*(i%2?1:-1),2,w)}

Jan 4 2018 11:43 PM UTC

}// 123/140

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u/ETHproductions

Golfed even further: https://www.dwitter.net/d/5601

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Bugsy

remix of d/5108 by u/Bugsy

function u(t) {

c.width+=i=0;h=400;for(;++i<200;)for(j=a=(t+C(i))%2;j++<50;)x.fillRect(~~a*(w=a*h-h)*C(j)+960,(~~a?h:a*h)*(S(i)+2)+C(i)+w*S(j)/4-200,2,2)

Jan 1 2018 11:37 PM UTC

}// 137/140

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If I'm being honest, I have *no clue* what I did here, but it looks cool, so I'm posting the remix anyways

u/joeytwiddle

:D
u/rhys5584

Very nice

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