New #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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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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tomxor

remix of d/15951 by u/tomxor

function u(t) {

for(w=c.width=120,i=9e3;i--;x.fillRect(R=i%w,T=i/w,1,.5-Z/64))for(j=4,Z=T;j--;)Z=((R-60)**2+(T-33)**2+Z*Z)**.5-24+C(R*T/120+t*9)*C(Z/3+t)*7

Oct 6 2019 7:24 PM UTC

}// 139/140

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Ray Marching SDF Gone Wrong

u/tomxor

Not sure what Z represents anymore, it's essentially chaotic marching...
u/tomxor

Oh, i see it now, it's a #stargate just add glyphs
u/tomxor

#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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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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yonatan

function u(t) {

for(i=j=c.width=198;i--;)for(X=i-99,Y=20;Y++<120;)h=S(X/Y*5)*S(Y/9-t*9),x.fillStyle=R(128-h*99),x.fillRect(i,(Y+h*29)*Y/j,Y/j,199)

Mar 9 2018 3:14 AM UTC

}// 130/140

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half-assed floor marcher

Show more comments…
u/joeytwiddle

looks very nice
u/aleamb

great!
u/magna

Looks like marching half-asses
u/yonatan

Good point! I'll pretend I was going for that
u/iverjo

Very nice!
u/joeytwiddle

#renderer #raytracing #raymarching

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Xen

remix of d/2963 by u/p01

function u(t) {

for(X=c.width=99;X--;x.fillRect(X,D,1-D/7,59-D*6))for(D=0;','<(u+1)[t+D*C(T=X/99-C(t))|(4.5+D*S(T))<<3]&&D<6;)D+=.1

Jul 31 2017 11:18 PM UTC

}// 115/140

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Dweetenstein115

u/iverjo

Impressive! Also kudos to p01 for creating the original
u/donbright

omg
u/Xen

Every remix i've ever done wouldn't exist without the original ;-)
u/iverjo

#wolfenstein
u/Xen

#d3 #raymarching

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