124 lines
3.4 KiB
C
124 lines
3.4 KiB
C
#pragma once
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#include <stdbool.h>
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#include <stddef.h>
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#include "./vector.h"
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typedef union {
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vec2_t col[2];
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float elm[2][2];
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float ptr[4];
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} mat2_t;
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typedef union {
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vec3_t col[3];
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float elm[3][3];
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float ptr[9];
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} mat3_t;
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typedef union {
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vec4_t col[4];
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float elm[4][4];
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float ptr[16];
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} mat4_t;
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#define mat3_identity() (mat3_t) {{ \
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vec3(1, 0, 0), \
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vec3(0, 1, 0), \
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vec3(0, 0, 1), \
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}}
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#define mat4_identity() (mat4_t) {{ \
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vec4(1, 0, 0, 0), \
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vec4(0, 1, 0, 0), \
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vec4(0, 0, 1, 0), \
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vec4(0, 0, 0, 1), \
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}}
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#define mat3_translation(x, y) (mat3_t) {{ \
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vec3(1, 0, 0), \
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vec3(0, 1, 0), \
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vec3(x, y, 1), \
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}}
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#define mat4_translation(x, y, z) (mat4_t) {{ \
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vec4(1, 0, 0, 0), \
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vec4(0, 1, 0, 0), \
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vec4(0, 0, 1, 0), \
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vec4(x, y, z, 1), \
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}}
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#define mat3_scale(x, y) (mat3_t) {{ \
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vec3(x, 0, 0), \
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vec3(0, y, 0), \
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vec3(0, 0, 1), \
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}}
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#define mat4_scale(x, y, z) (mat4_t) {{ \
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vec4(x, 0, 0, 0), \
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vec4(0, y, 0, 0), \
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vec4(0, 0, z, 0), \
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vec4(0, 0, 0, 1), \
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}}
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#define mat3_rotation_z(sin_theta, cos_theta) (mat3_t) {{ \
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vec3( cos_theta, sin_theta, 0), \
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vec3(-(sin_theta), cos_theta, 0), \
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vec3( 0, 0, 1), \
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}}
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#define mat4_rotation_x(sin_theta, cos_theta) (mat4_t) {{ \
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vec4(1, 0, 0, 0), \
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vec4(0, cos_theta, sin_theta, 0), \
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vec4(0, -(sin_theta), cos_theta, 0), \
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vec4(0, 0, 0, 1), \
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}}
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#define mat4_rotation_y(sin_theta, cos_theta) (mat4_t) {{ \
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vec4(cos_theta, 0, -(sin_theta), 0), \
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vec4( 0, 1, 0, 0), \
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vec4(sin_theta, 0, cos_theta, 0), \
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vec4( 0, 0, 0, 1), \
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}}
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#define mat4_rotation_z(sin_theta, cos_theta) (mat4_t) {{ \
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vec4( cos_theta, sin_theta, 0, 0), \
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vec4(-(sin_theta), cos_theta, 0, 0), \
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vec4( 0, 0, 1, 0), \
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vec4( 0, 0, 0, 1), \
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}}
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bool mat2_valid(const mat2_t* x);
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bool mat3_valid(const mat3_t* x);
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bool mat4_valid(const mat4_t* x);
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void mat2_add(mat2_t* x, const mat2_t* l, const mat2_t* r);
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void mat3_add(mat3_t* x, const mat3_t* l, const mat3_t* r);
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void mat4_add(mat4_t* x, const mat4_t* l, const mat4_t* r);
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void mat2_addeq(mat2_t* x, const mat2_t* r);
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void mat3_addeq(mat3_t* x, const mat3_t* r);
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void mat4_addeq(mat4_t* x, const mat4_t* r);
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void mat2_sub(mat2_t* x, const mat2_t* l, const mat2_t* r);
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void mat3_sub(mat3_t* x, const mat3_t* l, const mat3_t* r);
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void mat4_sub(mat4_t* x, const mat4_t* l, const mat4_t* r);
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void mat2_subeq(mat2_t* x, const mat2_t* r);
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void mat3_subeq(mat3_t* x, const mat3_t* r);
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void mat4_subeq(mat4_t* x, const mat4_t* r);
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void mat2_mul(mat2_t* x, const mat2_t* l, const mat2_t* r);
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void mat3_mul(mat3_t* x, const mat3_t* l, const mat3_t* r);
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void mat4_mul(mat4_t* x, const mat4_t* l, const mat4_t* r);
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void mat2_mul_vec2(vec2_t* x, const mat2_t* l, const vec2_t* r);
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void mat3_mul_vec3(vec3_t* x, const mat3_t* l, const vec3_t* r);
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void mat4_mul_vec4(vec4_t* x, const mat4_t* l, const vec4_t* r);
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float mat2_det(const mat2_t* x);
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float mat3_det(const mat3_t* x);
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float mat4_det(const mat4_t* x);
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void mat3_cofactor(mat2_t* x, const mat3_t* r, size_t row, size_t col);
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void mat4_cofactor(mat3_t* x, const mat4_t* r, size_t row, size_t col);
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bool mat3_inv(mat3_t* x, const mat3_t* r);
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bool mat4_inv(mat4_t* x, const mat4_t* r);
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