63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
#ifndef INCLUDED_MATERIAL_H
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#define INCLUDED_MATERIAL_H
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#include "arena.h"
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#include "ray.h"
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#include "texture.h"
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#include <stdbool.h>
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struct HitRecord;
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typedef enum MaterialType {
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MATERIAL_LAMBERTIAN,
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MATERIAL_METAL,
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MATERIAL_DIELECTRIC,
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} MaterialType;
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typedef struct Lambertian {
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const Texture *albedo;
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} Lambertian;
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typedef struct Metal {
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const Texture *albedo;
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double fuzziness;
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} Metal;
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typedef struct Dielectric {
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double eta;
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} Dielectric;
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typedef struct Material {
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MaterialType type;
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union {
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Lambertian lambertian;
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Metal metal;
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Dielectric dielectric;
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};
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} Material;
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bool material_scatter(const Material *material, Ray r,
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const struct HitRecord *record, Color *attenuation,
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Ray *scattered);
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Material *material_create_lambertian(const Texture *albedo, Arena *arena);
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Material *material_create_lambertian_color(Color albedo, Arena *arena);
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bool lambertian_scatter(const Lambertian *lambertian, Ray r,
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const struct HitRecord *record, Color *attenuation,
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Ray *scattered);
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Material *material_create_metal(const Texture *albedo, double fuzziness,
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Arena *arena);
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Material *material_create_metal_color(Color albedo, double fuzziness,
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Arena *arena);
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bool metal_scatter(const Metal *metal, Ray r, const struct HitRecord *record,
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Color *attenuation, Ray *scattered);
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Material *material_create_dielectric(double eta, Arena *arena);
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bool dielectric_scatter(const Dielectric *dielectric, Ray r,
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const struct HitRecord *record, Color *attenuation,
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Ray *scattered);
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#endif /* INCLUDED_MATERIAL_H */
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