#ifndef frustum_h
#define frustum_h

#include "raylib.h"
#include <stdbool.h>

#define number_of_planes 6

typedef struct frustum_plane_struct
{
        Vector3 normal;
        float distance;
} frustum_plane_struct;

/**
 * Extracts the six clipping planes from a combined View-Projection matrix.
 * * This function utilizes the Gribb-Hartmann method to derive plane equations
 * directly from the matrix rows. The resulting planes are normalized to ensure
 * that the distance calculations in visibility tests are accurate.
 */
void extract_frustum_planes(frustum_plane_struct planes[number_of_planes], 
                                Matrix view_projection);


/**
 * Checks if an Axis-Aligned Bounding Box (AABB) is within the view frustum.
 * * This function performs a fast visibility test by finding the "positive vertex" 
 * of the box (the corner most aligned with the plane normal). If this vertex 
 * is outside any of the six planes, the entire box is considered culled.
 */
bool is_axis_aligned_bounding_box_in_frustum( const frustum_plane_struct planes
                                                [
                                                        number_of_planes
                                                ], 
                                                BoundingBox bounds);

#endif