New #sdf dweets

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: #ScaryMovies

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tomxor

remix of d/27317 by u/tomxor

function u(t) {

eval(unescape(escape`𩠽𬠽🡈𚁈𚁃𚁲𚐪𦐭𤰨𬠩𚡚𛁘𚐭𛠳𛁃𚁲𚐪𦠫𤰨𬠩𚡙𚐾𛠱𞱦𫱲𚁈👍𨑴𪀮𪁹𬁯𭀬𨰮𭱩𩁴𪀽𬀽𭰽𜐲𞀻𬀼𜑥𝀻𤠼𜐲𙡦𚀫𚱵𙐶𚱴𚐿𤠯🐮𞐶𞡸𛡦𪑬𫁒𩑣𭀨𬀥𭰬𬀫𚰯𭰬𤠯𞀬𤠽𭐽𜐩𚑘👰𛰶𝀥𜠭𜠫𭐥𝠯𜠮𝐬𦐽𬀯𞁥𜰭𛠶𛁚👒𛰸𛐮𝐻`.replace(/u../g,'')))

Apr 2 2023 11:48 AM UTC

}// 133/140

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Linked Toroids #sdf #chain

Show more comments…
u/magna

!!!!!!!
u/Joachim

Woooooow
u/vain

Just wow! Seems you are using the undocumented and hidden Init3DEngine() function ;-)
u/13thptr

What magna said.
u/deobfuscate

Wait, they're just torus?
u/deobfuscate

(pretend this isnt me): always has been :gun:
u/jdspugh

Amazing

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vgel

remix of d/27314 by u/vgel

function u(t) {

for(w=p=c.width|=H=Math.hypot;p<2e6;x.fillRect(p%w,p/w,1/Z,9))for(Z=i=5;i--;p+=19)Z-=H(H(C(t)*(X=p/w%1-.5)-S(t)*Z,p/1e6-1)-.3,C(t)*Z+S(t)*X)

Apr 1 2023 6:49 PM UTC

}// 140/140

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the ring #sdf #scarymovies

u/vgel

if you can't beat the weird artifacts, say they're intentional :-)
u/joeytwiddle

weird accidental artifacts are sometimes the best!

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tomxor

remix of d/27290 by u/vgel

function u(t) {

eval(unescape(escape`𩡯𬠨𢀽𣑡𭁨𛡨𮑰𫱴𛁣𛡷𪑤𭁨👰👷🐱𜠸𞱰🀱𩐴𞱒🀱𜠦𢀨𢀨𠰨𭀩𚡘𛑓𚁴𚐪𦠬𦐩𛐮𜰬𠰨𭀩𚡚𚱓𚁴𚐪𦀩🠮𜐵🱒𛰽𛠹𞡸𛡦𪑬𫁒𩑣𭀨𬀥𭰬𬀫𚰯𭰬𤠯𞀬𤠽𜐩𚑘👰𛰶𝀥𜠭𜐬𦐽𬀯𞁥𜰭𛠶𛁚👒𛰸𛐮𝐻`.replace(/u../g,'')))

Apr 1 2023 2:06 PM UTC

}// 120/140

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Torus #sdf 153 Bytes

u/tomxor

13 chars over, this has been squeezed pretty hard, I don't think it's going to fit into 140.
u/magna

donut underestimate yourself
u/tomxor

😂 🥁

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vgel

remix of d/27292 by u/vgel

function u(t) {

for(w=p=c.width|=H=Math.hypot;p<2e6;x.fillRect(p%w,p/w,Z*9,9))for(Z=i=9;i--;p+=19)Z-=H(H(C(t)*(X=p/w%1-.5)-S(t)*Z,p/1e6-1)-.4,C(t)*Z+S(t)*X)

Mar 31 2023 6:14 AM UTC

}// 140/140

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spinning torus #uncompressed #SDF

u/vgel

finally got it!!! this was really tough. thanks to u/Xen on d/27292 for pointing out an unneeded variable which sent me down this rabbit hole :-)

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vgel

remix of d/27290 by u/vgel

function u(t) {

eval(unescape(escape`景爨眽瀽挮睩摴桼㵈㵍慴栮桹灯琻瀫㴲㜹ⱘ㴨儽瀥眩⼱攳ⴱⱙ㴨圽瀯睼〩⼵〰ⴱⱰ㰲收㭸⹦楬汒散琨儬圬猽㘰⽩ⱳ⤩景爨娽椽䐽ㄻ⬫椼㤦䐾⸱㬩娭㵄㵈⠨䠨⡃⡴⤪堭匨琩⩚⤬天⴮㐩Ⱘ䌨琩⩚⭓⡴⤪堩⤭⸱`.replace(/u([^D].)/g,'$1%')))

Mar 29 2023 7:06 PM UTC

}// 140/140

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dithered donut #sdf

u/vgel

got inspired by d/16174 for some ways to shrink it further :-)
u/Xen

shaved a few: for(w=p=c.width|=H=Math.hypot;p+=279,X=(Q=p%w)/1e3-1,p<2e6;x.fillRect(Q,W,s=60/i,s))for(Z=i=D=1;++i<9&D>.1;)Z-=D=H((H((C(t)*X-S(t)*Z),(W=p/w)/500-1)-.4),(C(t)*Z+S(t)*X))-.1
u/joeytwiddle

Nice effect!

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vgel

function u(t) {

eval(unescape(escape`景爨挮睩摴桼㵷㴱攳ⱘ㴭ㄻ堼ㄻ堫㴮〲⥦潲⡙㴭ㄻ夼ㄻ砮晩汬剥捴⡘⩷⭷Ⱘ夫㴮〲⤪眫㔰〬椬椩⥦潲⡚㵩㵄㴱㬫⭩㰹♄㸮ㄻ⥚ⴽ䐽⠨⠨䌨琩⩘ⵓ⡴⤪娩⨪㈫太天⨪⸵⴮㐩⨪㈫⡃⡴⤪娫匨琩⩘⤪⨲⤪⨮㔭⸱`.replace(/u([^D].)/g,'$1%')))

Mar 29 2023 4:37 PM UTC

}// 140/140

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donut #sdf

u/vgel

this one was a huge pain to make fit even with the compression, I'll be really impressed if someone can golf it down to fit in 140 characters
u/vgel

I finally was able to, by sacrificing some of the visuals: d/27314
u/tomxor

Nice! I'm interested to dig into this in SDF form
u/magna

Amazin!

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Odog8

function u(t) {

c.width=200;for(j=A=50;j--+A;){for(l=A;l--+A;R=0){for(i=A;i--;T=
l*l/A+j*j/A+(R-3)**2-9
)T>0&&(R+=.1);x.fillRect(l+A,j+A,1,R/3)}}

Dec 17 2021 7:04 PM UTC

}// 130/140

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raymarcher, middle is SDF, l and j are x and y, R is z

u/tomxor

#raymarching #sdf
u/tomxor

Interesting to see it done a little differently
u/f8f82804

#d3 #pbr #sphere

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tomxor

remix of d/16179 by u/tomxor

function u(t) {

eval(unescape(escape`景爨汥琠栽䵡瑨⹨祰潴ⱷ㵣⹷楤瑨㴱㈰ⱘⱙⱚⱩ㴸攳ⱪⱳ㵓⡴⤪㈴㭩ⴭ㭸⹦楬汒散琨堽椥眬夽椯眬ㄬ栨堬娫眪䌨琯㈩⤯眩⥦潲⡪㴸ⱚ㵷㭪ⴭ㬩娭㵍慴栮浩渨栨堭㘰ⱙⴳ㐬娩ⴱ㠬栨堭㘰⵳ⱙⴳ㐭猬娭䌨琩⨴㠩ⴳ⤻`.replace(/u(..)/g,"$1%")))

Oct 19 2019 10:09 PM UTC

}// 140/140

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Ray Marching SDF Orbit

u/tomxor

Includes local var perf improvement from u/pavel, union of two spheres with terrible fake shading and loads of marching artifacts :) just imagine a big ol' blury lense
u/aleamb

#sdf #raymarching
u/katkip

WOW

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pavel

remix of d/16169 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𫁥𭀠𪐽𝐶𜀰𛁷👣𛡷𪑤𭁨🐹𞐬𦀬𦐬𦠬𪠬𬰽𜐶𞱩𛐭𞱸𛡦𪑬𫁒𩑣𭀨𦀽𪐥𭰬𦐽𪐯𭰬𜐬𛠶𛑚𛱷𚐩𩡯𬠨𪠽𝀬𦠽𭰻𪠭𛐻𚑚𛐽𣑡𭁨𛡨𮑰𫱴𚁘𛐵𜀬𦐯𜠬𦠩𛑳𛑓𚁙𛱳𚱴𚠴𚐪𞀫𠰨𝐪𤰨𦐯𬰫𠰨𦀯𝠩𚐫𝐪𤰨𦀯𬰫𤰨𦠯𬰫𦐯𝠫𭀪𞀩𚐫𭀩𚠵`.replace(/u../g,'')))

Oct 19 2019 4:18 AM UTC

}// 134/140

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Ray Marching SDF Smoke #improved fps

u/tomxor

huh, did not know about Math.hypot, also it's weird how sensitive V8 is to globals... or rather how it seems incapable of optimising them into locals itself.
u/tomxor

#smoke
u/aleamb

#sdf #raymarching

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