EmaMaker
/
raymarching
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

add operations, from inigo quilez 

https://iquilezles.org/articles/distfunctions
nophong
EmaMaker 2023-01-21 20:35:29 +01:00
parent 1144e29b29
commit c4b871ac09
1 changed files with 62 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

66
shaders/shader.fs
View File

@ -53,14 +53,72 @@ phong opUnion( phong d1, phong d2 ) {
else return d2;
}
phong opSmoothUnion( phong d1, phong d2, float k ) {
float h = clamp( 0.5 + 0.5*(d2.sdf-d1.sdf)/k, 0.0, 1.0 );
float m = (d1.sdf + d2.sdf) / 2.0;
phongdata data;
data.ambient = mix(d2.data.ambient, d1.data.ambient, h) - vec3(k*h*(1.0-h));
data.diffuse = mix(d2.data.diffuse, d1.data.diffuse, h) - vec3(k*h*(1.0-h));
data.specular = mix(d2.data.specular, d1.data.specular, h) - vec3(k*h*(1.0-h));
data.shininess = mix( d2.data.shininess, d1.data.shininess, h ) - k*h*(1.0-h);
phong ret = phong(data, mix( d2.sdf, d1.sdf, h ) - k*h*(1.0-h));
return ret;
}
phong opIntersection( phong d1, phong d2 ) {
if(d1.sdf < d2.sdf) return d2;
else return d1;
}
// from d2 substract d1
phong opDifference( phong d1, phong d2 ) {
if(-d1.sdf > d2.sdf) {
d1.sdf *= -1;
return d1;
}
else return d2;
}
vec3 s = vec3(0.0);
vec3 r = vec3(3.0, 5.0, 2.0);
vec3 rl = vec3(2.0, 1.0, 3.0);
vec3 l = r*rl*0.5;
phong sdfScene(in vec3 p){
return opUnion(
opUnion(
phong(phongSphere, sdfSphere(p, vec3(0.0), 1)),
phong(phongBox1, sdfBox(p, vec3(2.0, 0.0, 0.0), vec3(0.8)))
opUnion(
opUnion(
opUnion(
phong(phongSphere, sdfSphere(p, vec3(0.0), 1)),
phong(phongBox1, sdfBox(p, vec3(2.0, 0.0, 0.0), vec3(0.8)))
),
opUnion(
opDifference(
phong(phongBox1, sdfBox(p, vec3(-3.5, 3.5, 0.0), vec3(0.5))),
phong(phongSphere, sdfSphere(p, vec3(-4.0, 4.0, 0.0), 1))
),
opDifference(
phong(phongSphere, sdfSphere(p, vec3(-4.0, 8.0, 0.0), 0.75+ 0.25 * (1+sin(2*u_time)))),
phong(phongBox1, sdfBox(p, vec3(-4.0, 8.0, 0.0), vec3(0.8)))
)
)
),
opUnion(
opIntersection(
phong(phongSphere, sdfSphere(p, vec3(0.0, 4.0, 0.0), 1)),
phong(phongBox1, sdfBox(p, vec3(0.0, 4.5, 0.0), vec3(1)))
),
opSmoothUnion(
phong(phongBox2, sdfBox(p, vec3(0.0, 0.0, 6.0), vec3(3.0, 0.2, 3.0)) ),
phong(phongSphere, sdfSphere(p, vec3(0.0, 1.0+sin(u_time), 6.0), 1)),
0.5
)
)
),
opUnion(
phong(phongBox2, sdfBox(p, vec3(-5.0, 0.0, 0.0), vec3(2.0, 1.0, 0.5))),
phong(phongBox2, sdfBox(p, vec3(5.0, 0.0, 0.0), vec3(2.0, 1.0, 0.5))),
phong(phongLightBox, sdfBox(p, lightPos, vec3(0.1)))
)
);