trigonometry.h

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#ifndef _H_TRIGONOMETRY
#define _H_TRIGONOMETRY
 
#include "trc_world_position.h"
#include <stdbool.h>
 
#define PRECISION 0.0001   
#define DEGREE 0.0174533 
#define PI 3.1415926535           
#define UP_DIR    (PI / 2)        
#define DOWN_DIR  (3 * (UP_DIR))  
#define LEFT_DIR  (PI)            
#define RIGHT_DIR (PI * 0)        
#define DEG_TO_RAD(angleInDegrees) (adjust_angle((angleInDegrees) * PI / 180.0)) 
#define RAD_TO_DEG(angleInRadians) (adjust_angle(angleInRadians) * 180.0 / PI)   
#ifndef GAME_EXPORT
    #include <stdlib.h>
 
    #define trc_world_position_to_string(X) trc_world_position_to_string_with_name(X, #X)
 
    char* trc_world_position_to_string_with_name(const trc_world_position_t pos, const char* pos_name);
#else
    #define debug_position(X) // Does nothing
#endif
 
float distance_between(const trc_world_position_t p1, const trc_world_position_t p2);
 
float vector_length(const trc_world_position_t vector);
 
trc_world_position_t normalize_vector(const trc_world_position_t vector);
 
trc_world_position_t scalar_multiplication(const trc_world_position_t vector, const float scalar);
 
float angle_from_vector(trc_world_position_t vector);
 
float adjust_angle(const float angle);
 
bool are_equals(const float f1, const float f2);
 
#endif