Hot dweets by u/pavel

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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pavel

remix of d/13601 by u/pavel

function u(t) {

c.width|=f=(X,Y,Z,d,o=d<7&&5)=>{for(x.fillRect(960+1e3*X/Z,1e3*Y/Z,s=6/Z/Z,s);o--;f(X+R*S(a=t+11*o),Y+R,Z+R*C(a),d+1))R=o&&2**-d}
f(0,0,1,2)

May 8 2019 6:02 AM UTC

}// 140/140

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#sierpinski #pyramid

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u/KilledByAPixel

Wow!
u/Jezza

So great!
u/iverjo

Impressive! #d3
u/katkip

cute
u/rodrigo.siqueira

They said it was impossible. But Pavel did it anyway and here it is.
u/KilledByAPixel

This one was worth of an awesome gif... https://imgur.com/gallery/oHiQizL
u/f8f82804

#perspective
u/KilledByAPixel

reddit says hi https://www.reddit.com/r/perfectloops/commen…
u/katkip

Top of the month
u/yukulele

shouldn't it have a triangular base?
u/pavel

That would be a tetrahedron. Pyramids usually have a square base.
u/vain

So wonderful! Amazing work!

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pavel

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁼👦🐨𦐬𦠬𫠬𪠽𫠦𙠴𛁺👚𚰱𛁲🐲𚠪𛑮𚐽🡻𬰽𞐯𮠯𮠻𩡯𬠨𮀮𩡩𫁬𤡥𨱴𚀹𝠰𚠨𮠫𪐯𞀭𜐩𛱺𛑳𛰲𛀵𝀰𚰹𝠰𚡙𛱺𛁳𛁳𚐻𪠭𛐻𚑦𚁙𚱲𚡓𚁡👓𚁴𚐫𜐱𚡪𚐬𦠫𬠪𠰨𨐩𛁮𛐱𚑽𞱸𛡧𫁯𨡡𫁁𫁰𪁡🐮𝐻𩡯𬠨𪐽𜐶𞱩𛐭𞰩𩠨𜀬𜀬𝀩`.replace(/u../g,'')))

May 11 2019 7:42 AM UTC

}// 134/140

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182 c.width|=f=(Y,Z,n,j=n&&4,z=Z+1,r=2**-n)=>{s=9/z/z;for(x.fillRect(960*(z+i/8-1)/z-s/2,540+960*Y/z,s,s);j--;)f(Y+r*S(a=S(t)+11*j),Z+r*C(a),n-1)};x.globalAlpha=.5;for(i=16;i--;)f(0,0,4)

u/pavel

Wanted to make a 3d lattice with perspective
u/joeytwiddle

Didn't you already achieve that in d/13728 ?
u/pavel

Different method of generating a 3d lattice that rotates. Why is rotation so simple in this form?

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pavel

function u(t) {

eval(unescape(escape`景爨挮睩摴桼㵯㵛椽眽㤶そ㭩ⴭ㬩潛楝㵛㈮ㄫ䌨愽椫琯㤩⩃⡢㵩⨲〩ⱓ⡡⤪䌨戩ⱓ⡢⤬恨獬⠤筩紬㘹┬㔰╠崻景爨孚ⱘⱙⱸ⹦楬汓瑹汥嵯映漮獯牴⠩⹲敶敲獥⠩⥸⹦楬汒散琨眫眪堯娬㔴〫眪夯娬猽㔰⽚⽚ⱳ⤻`.replace(/u(..)/g,"$1%")))

May 8 2019 7:09 AM UTC

}// 139/140

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Depth demo

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u/pavel

181 for(c.width|=o=[i=w=960];i--;)o[i]=[2.1+C(a=i+t/9)*C(b=i*20),S(a)*C(b),S(b),`hsl(${i},69%,50%`];for([Z,X,Y,x.fillStyle]of o.sort().reverse())x.fillRect(w+w*X/Z,540+w*Y/Z,s=50/Z/Z,s)
u/pavel

Notice how the objects 'in front' are always drawn 'in front'
u/pavel

This requires a bunch more chars and is only needed when objects have unique colors, which requires more. It seems impossible to do this without compression.
u/pavel

Pretty simple technique, when generating the 3d points instead of directly drawing them, store them in an array, sort it by depth back to front, then draw.
u/keithclark

175. Removed need for reverse() by reversing the projection (far points are painted near and vice-versa): for(c.width|=o=[i=w=960];i--;)o[i]=[C(a=i-t/9)*C(b=i*20),S(a)*C(b),S(b),hsl(${i},69%,50%];for([Z,X,Y,x.fillStyle]of o.sort())x.fillRect(w+w*X/(j=2.1-Z),540+w*Y/j,s=50/j/j,s)
u/keithclark

158 - for(c.width|=o=[i=w=708];i--;o[i]=[C(a=i+t)*C(b=i*20),S(a)*C(b),S(b),R(a)]);for([Z,X,Y,x.fillStyle]of o.sort())Z-=2,x.fillRect(960+w*X/Z,540+w*Y/Z,s=50/Z/Z,s)
u/Joachim

#d3 #ball

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pavel

remix of d/13523 by u/Jezza

function u(t) {

with(x)for(X=960,Y=540,shadowBlur=i=9;--i;fillRect(X+=C(a=t*1e3/(-3)**i)*r,Y+=S(a)*r,i,i))shadowColor=fillStyle=`hsl(${60*i},50%,50%`,r=2**i

May 8 2019 6:34 AM UTC

}// 140/140

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#epicycles #graffiti

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pavel

function u(t) {

c.width|=0;for(let i=4e3,X=Y=Z=w=960;i--;x.fillRect(w+w*X/z,w*Y/z,s=64/z/z,s))a=i**t%5/.64,b=!!a,X=X/2+b*S(a+t),Y=Y/2+b,Z=Z/2+b*C(a+t),z=4+Z

May 2 2019 7:40 PM UTC

}// 140/140

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#sierpinski #pyramid #waitforit #chaosgame

u/pavel

#d3 #perspective
u/Jezza

I really like this!
u/jylikangas

Great! And with performance optimization. :)
u/katkip

UFO :))

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pavel

remix of d/13590 by u/katkip

function u(t) {

x.fillRect(t%1*3e3,~~t*50,s=3**t&4?50:5,55-s)

May 2 2019 6:30 PM UTC

}// 45/140

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45 byte #maze

u/rodrigo.siqueira

See the PDF book about ASCII maze here: https://10print.org/x , it is about the one liner maze which code is just; 10 PRINT CHR$(205.5+RND(1)); : GOTO 10
u/katkip

Wow, it got golfed so much...
u/pavel

42: x.fillRect(t%1*3840,t<<6,s=9**t&64|6,76-s)

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pavel

remix of d/3599 by u/Xen

function u(t) {

t*=2;x.fillStyle=`hsl(${~~t*45},69%,50%`
x.fillRect(w=640,h=360,w,h);o='00012221'
x.drawImage(c,0,0,3*w,3*h,w*o[t+2&7],h*o[t&7],w,h)

May 4 2019 2:08 AM UTC

}// 132/140

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Magic #carpet ride #sierpinski #fractal

u/Xen

much better :)

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pavel

remix of d/13538 by u/vinca

function u(t) {

for(c.width=73,i=3e3;X=i--/41;x.fillRect(X,Y,1,2))h=Math.hypot,x.fillStyle=R(4e3/h(o=X-36,Y=i%41)+(b=2e3/h(o-25*S(5*t),20+9*T(4*t)-Y)),0,b)

May 1 2019 7:06 PM UTC

}// 139/140

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u/vinca

Amazing! 182->139bytes

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pavel

function u(t) {

f=(a,b,w,h,i=h>1&&9)=>{for(;i--;)i-4?f(a+(i/3|0)*w,b+i%3*h,w/3,h/3):x.fillRect(a+w,b+h,w,h,x.fillStyle=R(a/3,b/4,h))}
t||f(0,0,640,360)

May 3 2019 11:22 PM UTC

}// 135/140

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#sierpinski #carpet #fractal

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pavel

remix of d/13492 by u/KilledByAPixel

function u(t) {

for(c.width%=i=3600;i--;x.fillRect(535+S(t)*300+i%9*99+i/9%10*5/a,440+(i/90|0)*5-40/a,6,6))a=1/(1+7**(t-5-S(i*i)-i/500)),x.globalAlpha=a*a

Apr 27 2019 9:29 AM UTC

}// 138/140

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mr #default I don't feel so good #tribute

u/pavel

Awesome idea, I just had to #uncompress it.
u/pavel

#uncompressed
u/KilledByAPixel

Wow, better thenthe original and uncompressed. Damn you pavel.
u/katkip

#thanos is my daddy

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