Top #raymarching 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.

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KilledByAPixel

remix of d/23088 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`󩭯󬬨󭼽󨼮󭽩󩍴󪌦󟝪󟜱󜌳󝬸󞽪󞽔󚼽󩌬󥌼󜜲󙭤󟬮󜝼󯍸󛭦󪝬󫍒󩝣󭌨󪬥󭼬󛜭󪬾󟬷󛍔󚭔󛼱󝌴󛍔󟜱󚜩󩭯󬬨󩌽󫬽󝌻󛜭󫬻󩌫󟜨󪌽󚍨󟜮󝜫󚍤󛝡󚜯󞜩󟬰󟽨󞬰󚜪󚌵󚭨󛝤󚽡󛜵󚜩󨜽󣝡󭍨󛭨󮝰󫽴󚍪󙝷󛼶󝌪󥌭󥌭󤼨󭌪󫬩󚬹󛍪󛼷󩜳󚭔󛝔󚽓󚍴󚭮󚭮󚜪󝌫󜼬󥌭󫬭󞜩󛝮`.replace(/u../g,'')))

Jun 12 2021 5:49 PM UTC

}// 140/140

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Raymarching Metaballs

u/KilledByAPixel

Using raymarching, signed distance function, and smooth union!
u/KilledByAPixel

#metaballs
u/Xen

nicely!!
u/iverjo

Nice!
u/aleamb

#raymarching

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tomxor

remix of d/15947 by u/tomxor

function u(t) {

for(c.width=127,i=9e3;i--;x.fillRect(R=i&127,T=i>>7,1,.5-Z/64))for(j=5,Z=32;j--;)Z-=((R-64)**2+(T-36)**2+Z*Z)**.5-24+C(R*T/120-t*9)*C(Z/3)*6

Oct 6 2019 4:03 PM UTC

}// 140/140

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Ray Marching SDF Sphere+Meltyness

u/tomxor

#raymarching

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KilledByAPixel

remix of d/22883 by u/tomxor

function u(t) {

t?t*=180:X=Y=Z=R=8
for(a=S(R),b=C(R),p=2e3;p--;x.fillRect(p,t,2-8/T,T=3))for(A=p/1e3-1,B=t/800;(X-T*a^Y+T*B^Z+T*(A*b-A*a-b))%15>1;T+=T/99);

May 28 2021 5:33 PM UTC

}// 139/140

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Dweetcraft HD Render ⛏️

Show more comments…
u/KilledByAPixel

I just now realize the t? part isnt necessary
u/taupelink

whoa
u/KilledByAPixel

More golfed: for(a=S(8),b=C(8),p=2e3;p--;x.fillRect(p,t*480,2-8/d,8))for(d=3;(8-d*a^8+d*t^8+d*((p/1e3-1)*(b-a)-b))%15>1;d+=d/99);
u/Toby

what is this sorcery?!
u/rep_movsd

Even this dweet got 100x faster
u/tomxor

#raymarching

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tomxor

remix of d/22883 by u/tomxor

function u(t) {

eval(unescape(escape`󭌿󨼮󭽩󩍴󪌽󭼽󝬴󞭘󟝙󟝚󟝒󟜵󞽦󫽲󚍡󟝓󚍒󚜬󨬽󠼨󤬩󛍰󟜳󩜳󞽰󛜭󞽘󛜽󪼪󨜬󦬭󟝫󚭢󛍙󚼽󪼪󠬬󤬭󟝫󚭁󛍸󛭦󪝬󫍒󩝣󭌨󬌥󭼬󬌯󭼬󜜬󜬭󝌯󩌩󚝦󫽲󚍁󟝰󙝷󛼳󜬭󜜬󠬽󬌯󜝥󜼬󩌽󜜻󚍘󚽤󚭁󚭢󛝤󚭡󧭙󚽤󚭂󧭚󛝤󚭁󚭡󛝤󚭢󚜥󜜵󟬱󞽤󚼽󛬱󚝫󟜨󜜭󜼯󩌯󩌩󛼲󩜴`.replace(/u../g,'')))

May 31 2021 3:37 PM UTC

}// 140/140

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Leisurely Descending a #minecraft cave v2

u/tomxor

Less of a maniac miner... now that dwitter perf is better.
u/tomxor

#raymarching

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KilledByAPixel

remix of d/22909 by u/KilledByAPixel

function u(t) {

for(c.width=j=w=99;j<6e3;T+=.1)(j%w/50*T-T^T*j/5e3-t^T)%9||x.fillRect(j%w,j++/w,9/T,T=1)

May 31 2021 8:20 PM UTC

}// 88/140

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Voxel Raycasting in 88 bytes!

u/KilledByAPixel

ncorporating tomxor's golfs plus a few more, increased resolution to 99 tall and tweaked the level gen
u/Xen

Nicely done!
u/tomxor

#raymarching
u/KilledByAPixel

higher resolution for(w=c.width&=j=10368;j;T+=.1)(j%w/64*T-T^T*j/8e3-t^T)%9||x.fillRect(--j%w,j/w,8/T,T=1)

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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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tomxor

function u(t) {

for(c.width=63,i=3e3;i--;x.fillRect(R=i&63,T=i>>6,1,.5-Z/24))for(j=5,Z=12;j--;)Z-=((R-32)**2+(T-18)**2+Z*Z)**.5-8+S(R/2+t*4)*S(T/2)*S(Z/2)*3

Oct 6 2019 12:27 PM UTC

}// 140/140

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Ray Marching SDF Sphere+Bumps

u/tomxor

Specifically, sphere tracing, with axis aligned field, i.e no perspective, marching along Z only. The sphere is not rotating, the simple displacement map is just being pushed through it's x.
u/yonatan

orthogonal raymarching... nice idea
u/tomxor

You said it more succinctly :)
u/tomxor

#raymarching

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KilledByAPixel

remix of d/22883 by u/tomxor

function u(t) {

for(c.width=w=64,a=S(t),p=3e3;B=p--/1e3;x.fillRect(p%w,p/w,2-7/T,T=1))for(A=p%w/32-1;(9-T*A-T*a^t*9+w+T*B|6-T*A*a+T)%15>1;T+=.1);

May 28 2021 10:49 PM UTC

}// 129/140

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Voxel Descent ⛏️

u/KilledByAPixel

More golfed... for(c.width=w=64,p=3e3;p--;x.fillRect(p%w,p/w,2-7/T,T=1))for(A=p%w/32-1;(9-T*A-T*R^t*9+w+T*p/1e3^6-T*A*R+T)&3;T+=.1)R=S(t)
u/tomxor

#raymarching

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Xen

function u(t) {

eval(unescape(escape`琿挮睩摴栽㔰〺栽㜵㭦潲⡶㵨㭶ⴭ㬩景爨礽栻礭ⴻ砮晩汬剥捴⡶⨴⬹㤬礪㐬丬丩⥦潲⡎㵄㴴㭘㵄⩶⽨ⵄ⼲ⱙ㵄⩹⽨ⵄ⼲ⱚ㵄⼲ⴹⱄ⬽搽⡘⩘⭙⩙⩃⡴⼶⭃⡄ⵘⵙ⤩⭚⩚⤯㤭ㄫ䌨堫琩⩃⡙⵴⤬⸱㱤⩎㬩中㴮1`.replace(/u(..)/g,"$1%")))

Sep 9 2020 6:12 PM UTC

}// 138/140

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#storm http://www.p01.org/tea_storm/

u/tomxor

#raymarching

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tomxor

remix of d/15952 by u/tomxor

function u(t) {

eval(unescape(escape`景爨眽挮睩摴栽ㄲ〬椽㡥㌻椭ⴻ砮晩汬剥捴⡒㵩╷ⱔ㵩⽷ⰱⰮ㘭娯㘴⤩景爨樽㐬娽眻樭ⴻ娭㴨⡒ⴶ〩⨪㈫⡔⼲⤪⨲⭚⩚⤪⨮㔭⠱㘫匨启猫琪㐩⨸⤫䌨㔪匨启猫䌨刯猪㌩⤫㔪匨刯猫匨娯猫启猪㌫琪㠩⤫琩⨵⥳㴱㘻`.replace(/u(..)/g,"$1%")))

Oct 18 2019 11:35 PM UTC

}// 140/140

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Ray Marching SDF Smoke

u/tomxor

Runs significantly faster in FireFox for some reason.
u/tomxor

Part of the smokeyness is obtained by exploiting artifacts in the ray marching algorithm itself, by only marching a constant and very short depth (4 steps) smooth aberations appear around the true volume (representative of the sphere tracing)
u/DataMeta

WOW!!! #smoke #realistic #compressed
u/tomxor

#raymarching

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