59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
#ifndef INCLUDED_TEXTURE_H
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#define INCLUDED_TEXTURE_H
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#include "arena.h"
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#include "color.h"
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#include "perlin.h"
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#include "point3.h"
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typedef enum TextureType {
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TEXTURE_SOLID_COLOR,
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TEXTURE_CHECKER,
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TEXTURE_PERLIN_NOISE,
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} TextureType;
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typedef struct Texture Texture;
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typedef struct SolidColor {
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Color value;
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} SolidColor;
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typedef struct CheckerTexture {
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const Texture *odd;
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const Texture *even;
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double size;
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} CheckerTexture;
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typedef struct PerlinNoiseTexture {
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const PerlinData *data;
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double scale;
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} PerlinNoiseTexture;
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struct Texture {
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TextureType type;
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union {
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SolidColor solid_color;
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CheckerTexture checker;
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PerlinNoiseTexture noise;
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};
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};
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Texture *texture_create_solid_color(Color value, Arena *arena);
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Texture *texture_create_checker(const Texture *odd, const Texture *even,
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double size, Arena *arena);
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Texture *texture_create_checker_solid_color(Color odd, Color even, double size,
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Arena *arena);
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Texture *texture_create_perlin_noise(double scale, int point_count,
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Arena *arena);
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Color texture_value(const Texture *texture, double u, double v, Point3 p);
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Color solid_color_value(const SolidColor *solid_color);
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Color checker_value(const CheckerTexture *checker, double u, double v,
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Point3 p);
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Color perlin_value(const PerlinNoiseTexture *perlin, Point3 p);
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#endif /* INCLUDED_TEXTURE_H */
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