Subversion Repositories Kolibri OS

#ifndef rs_mx_t_H_INCLUDED

#define rs_mx_t_H_INCLUDED

// Some matrix and vector stuff

// by Roman Shuvalov

#define RS_SQR(x) ((x)*(x))

// actual period is 1024 ms (1.024 sec)

#define RS_TIME_KOEF_SEC (M_PI * 2.0 * 64.0 / 65536.0)

typedef struct {

    union {

        struct {

            float x;

            float y;

            float z;

        };

        float v[3];

    };

} rs_vec3_t;

typedef struct {

    union {

        struct {

            float x;

            float y;

            float z;

            float w;

        };

        float v[4];

    };

} rs_vec4_t;

rs_vec3_t rs_vec3_sub(rs_vec3_t v1, rs_vec3_t v2);

rs_vec3_t rs_vec3_add(rs_vec3_t v1, rs_vec3_t v2);

rs_vec3_t rs_vec3_mult(rs_vec3_t v, float s);

rs_vec4_t rs_vec4_sub(rs_vec4_t v1, rs_vec4_t v2);

void rs_vec4_add(rs_vec4_t dest, rs_vec4_t v1, rs_vec4_t v2);

rs_vec4_t rs_vec4(float x, float y, float z, float w);

rs_vec3_t rs_vec3(float x, float y, float z);

float rs_vec4_length_sqr(rs_vec4_t src);

float rs_vec3_length_sqr(rs_vec3_t src);

float rs_vec4_length(rs_vec4_t v);

float rs_vec3_length(rs_vec3_t v);

float rs_vec4_dot(rs_vec4_t v1, rs_vec4_t v2);

float rs_vec3_dot(rs_vec3_t v1, rs_vec3_t v2);

rs_vec3_t rs_vec3_cross(rs_vec3_t u, rs_vec3_t v);

rs_vec3_t rs_vec3_normalize(rs_vec3_t v);

float rs_vec4_angle(rs_vec4_t u, rs_vec4_t v);

float rs_vec3_cos_angle(rs_vec3_t u, rs_vec3_t v);

float rs_vec3_distance_sqr(rs_vec3_t u, rs_vec3_t v);

float rs_clamp(float x, float min1, float max1);

int rs_clamp_i(int x, int min1, int max1);

float rs_max(float x, float y);

float rs_min(float x, float y);

float rs_sign(float f);

float rs_pow(float f, float p);

float rs_fract(float f);

float rs_exp_interpolate(float v_from, float v_to, float dt);

float rs_linear_interpolate(float v_from, float v_to, float t);

float rs_clamp_angle(float f);

#endif // rs_mx_t_H_INCLUDED