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#ifndef PLANE_H
#define PLANE_H
#include "Vector3.h"
#include <cmath>
namespace godot {
enum ClockDirection {
CLOCKWISE,
COUNTERCLOCKWISE
};
class Plane {
public:
Vector3 normal;
real_t d;
void set_normal(const Vector3& p_normal);
inline Vector3 get_normal() const { return normal; } ///Point is coplanar, CMP_EPSILON for precision
void normalize();
Plane normalized() const;
/* Plane-Point operations */
inline Vector3 center() const { return normal*d; }
Vector3 get_any_point() const;
Vector3 get_any_perpendicular_normal() const;
bool is_point_over(const Vector3 &p_point) const; ///< Point is over plane
real_t distance_to(const Vector3 &p_point) const;
bool has_point(const Vector3 &p_point,real_t _epsilon=CMP_EPSILON) const;
/* intersections */
bool intersect_3(const Plane &p_plane1, const Plane &p_plane2, Vector3 *r_result=0) const;
bool intersects_ray(Vector3 p_from, Vector3 p_dir, Vector3* p_intersection) const;
bool intersects_segment(Vector3 p_begin, Vector3 p_end, Vector3* p_intersection) const;
Vector3 project(const Vector3& p_point) const;
/* misc */
inline Plane operator-() const { return Plane(-normal,-d); }
bool is_almost_like(const Plane& p_plane) const;
bool operator==(const Plane& p_plane) const;
bool operator!=(const Plane& p_plane) const;
operator String() const;
inline Plane() { d=0; }
inline Plane(real_t p_a, real_t p_b, real_t p_c, real_t p_d) : normal(p_a,p_b,p_c), d(p_d) { }
Plane(const Vector3 &p_normal, real_t p_d);
Plane(const Vector3 &p_point, const Vector3& p_normal);
Plane(const Vector3 &p_point1, const Vector3 &p_point2,const Vector3 &p_point3,ClockDirection p_dir = CLOCKWISE);
};
}
#endif // PLANE_H
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