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authorKeuin <[email protected]>2022-04-15 14:08:31 +0800
committerKeuin <[email protected]>2022-04-15 14:08:31 +0800
commit09c233e4f4af81981d72f10691153d318c83c9fd (patch)
tree23e7cdbbaaa83068ae9ca22e60917b0836130d41 /material.cpp
parent2d4671d5469116b05709bb1acb614d784d339964 (diff)
Rename material.cpp -> material_diffusive.cpp.
Diffstat (limited to 'material.cpp')
-rw-r--r--material.cpp76
1 files changed, 0 insertions, 76 deletions
diff --git a/material.cpp b/material.cpp
deleted file mode 100644
index b312246..0000000
--- a/material.cpp
+++ /dev/null
@@ -1,76 +0,0 @@
-//
-// Created by Keuin on 2022/4/15.
-//
-
-#include "material.h"
-
-
-bool material_diffuse_lambertian::scatter(ray3d &r, const object &hit_obj, double hit_t, random_uv_gen_3d &ruvg) const {
- const auto hit_point = r.at(hit_t); // hit point, on the surface
- auto nv = hit_obj.normal_vector(hit_point);
- if (dot(nv, r.direction()) > 0) return false; // discard rays from inner (or invert nv)
- auto d = nv + ruvg.normalized();
- if (d.is_zero()) d = nv;
- vec3d diffuse_target = hit_point + d;
- r.decay(albedo); // lose some light when diffused
- r.source(hit_point);
- r.direction((diffuse_target - hit_point).unit_vec()); // the new diffused ray we trace on
- return true;
-}
-
-material_diffuse_lambertian::material_diffuse_lambertian(vec3d albedo) : albedo(albedo) {
- assert(albedo.mod2() >= 0);
- assert(albedo.mod2() <= 1);
-}
-
-material_diffuse_lambertian::material_diffuse_lambertian(double albedo) : albedo{albedo, albedo, albedo} {
- assert(albedo >= 0);
- assert(albedo <= 1);
-}
-
-material_diffuse_simple::material_diffuse_simple(vec3d albedo) : albedo(albedo) {
- assert(albedo.mod2() >= 0);
- assert(albedo.mod2() <= 1);
-}
-
-bool material_diffuse_simple::scatter(ray3d &r, const object &hit_obj, double hit_t, random_uv_gen_3d &ruvg) const {
- const auto hit_point = r.at(hit_t); // hit point, on the surface
- auto nv = hit_obj.normal_vector(hit_point);
- if (dot(nv, r.direction()) > 0) return false; // discard rays from inner (or invert nv)
- auto d = nv + ruvg.normalized();
- if (d.is_zero()) d = nv;
- vec3d diffuse_target = hit_point + nv + ruvg.range01();
- r.decay(albedo); // lose some light when diffused
- r.source(hit_point);
- r.direction((diffuse_target - hit_point).unit_vec()); // the new diffused ray we trace on
- return true;
-}
-
-material_diffuse_simple::material_diffuse_simple(double albedo) : albedo{albedo, albedo, albedo} {
- assert(albedo >= 0);
- assert(albedo <= 1);
-}
-
-material_diffuse_hemispherical::material_diffuse_hemispherical(vec3d albedo) : albedo(albedo) {
- assert(albedo.mod2() >= 0);
- assert(albedo.mod2() <= 1);
-}
-
-bool
-material_diffuse_hemispherical::scatter(ray3d &r, const object &hit_obj, double hit_t, random_uv_gen_3d &ruvg) const {
- const auto hit_point = r.at(hit_t); // hit point, on the surface
- auto nv = hit_obj.normal_vector(hit_point);
- if (dot(nv, r.direction()) > 0) return false; // discard rays from inner (or invert nv)
- auto d = nv + ruvg.normalized();
- if (d.is_zero()) d = nv;
- vec3d diffuse_target = hit_point + ruvg.hemisphere(nv);
- r.decay(albedo); // lose some light when diffused
- r.source(hit_point);
- r.direction((diffuse_target - hit_point).unit_vec()); // the new diffused ray we trace on
- return true;
-}
-
-material_diffuse_hemispherical::material_diffuse_hemispherical(double albedo) : albedo{albedo, albedo, albedo} {
- assert(albedo >= 0);
- assert(albedo <= 1);
-}