79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
#pragma once
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#include <stdbool.h>
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typedef union {
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struct { float x, y; };
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float ptr[2];
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} vec2_t;
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typedef union {
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struct { float x, y, z; };
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float ptr[3];
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vec2_t xy;
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} vec3_t;
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typedef union {
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struct { float x, y, z, w; };
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float ptr[4];
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vec2_t xy;
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vec3_t xyz;
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} vec4_t;
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#define vec2(x, y) (vec2_t) {{x, y}}
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#define vec3(x, y, z) (vec3_t) {{x, y, z}}
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#define vec4(x, y, z, w) (vec4_t) {{x, y, z, w}}
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bool vec2_valid(const vec2_t* x);
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bool vec3_valid(const vec3_t* x);
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bool vec4_valid(const vec4_t* x);
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void vec2_add(vec2_t* x, const vec2_t* l, const vec2_t* r);
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void vec3_add(vec3_t* x, const vec3_t* l, const vec3_t* r);
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void vec4_add(vec4_t* x, const vec4_t* l, const vec4_t* r);
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void vec2_addeq(vec2_t* x, const vec2_t* r);
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void vec3_addeq(vec3_t* x, const vec3_t* r);
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void vec4_addeq(vec4_t* x, const vec4_t* r);
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void vec2_sub(vec2_t* x, const vec2_t* l, const vec2_t* r);
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void vec3_sub(vec3_t* x, const vec3_t* l, const vec3_t* r);
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void vec4_sub(vec4_t* x, const vec4_t* l, const vec4_t* r);
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void vec2_subeq(vec2_t* x, const vec2_t* r);
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void vec3_subeq(vec3_t* x, const vec3_t* r);
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void vec4_subeq(vec4_t* x, const vec4_t* r);
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void vec2_mul(vec2_t* x, const vec2_t* l, float r);
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void vec3_mul(vec3_t* x, const vec3_t* l, float r);
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void vec4_mul(vec4_t* x, const vec4_t* l, float r);
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void vec2_muleq(vec2_t* x, float r);
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void vec3_muleq(vec3_t* x, float r);
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void vec4_muleq(vec4_t* x, float r);
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void vec2_div(vec2_t* x, const vec2_t* l, float r);
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void vec3_div(vec3_t* x, const vec3_t* l, float r);
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void vec4_div(vec4_t* x, const vec4_t* l, float r);
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void vec2_diveq(vec2_t* x, float r);
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void vec3_diveq(vec3_t* x, float r);
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void vec4_diveq(vec4_t* x, float r);
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float vec2_pow_length(const vec2_t* x);
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float vec3_pow_length(const vec3_t* x);
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float vec4_pow_length(const vec4_t* x);
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float vec2_length(const vec2_t* x);
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float vec3_length(const vec3_t* x);
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float vec4_length(const vec4_t* x);
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float vec2_dot(const vec2_t* l, const vec2_t* r);
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float vec3_dot(const vec3_t* l, const vec3_t* r);
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float vec4_dot(const vec4_t* l, const vec4_t* r);
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float vec2_cross(const vec2_t* l, const vec2_t* r);
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/* TODO(catfoot): add vec3_cross function */
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