$#include "Polyhedron.h"

/// A convex volume built from polygon faces.
class Polyhedron
{
public:
    /// Construct empty.
    Polyhedron()
    {
    }
    
    /// Copy-construct from another polyhedron.
    Polyhedron(const Polyhedron& polyhedron) :
        faces_(polyhedron.faces_)
    {
    }
    
    /// Construct from a bounding box.
    Polyhedron(const BoundingBox& box)
    {
        Define(box);
    }
    
    /// Construct from a frustum.
    Polyhedron(const Frustum& frustum)
    {
        Define(frustum);
    }
    
    /// Destruct.
    ~Polyhedron();
    
    /// Define from a bounding box.
    void Define(const BoundingBox& box);
    /// Define from a frustum.
    void Define(const Frustum& frustum);
    /// Add a triangle face.
    void AddFace(const Vector3& v0, const Vector3& v1, const Vector3& v2);
    /// Add a quadrilateral face.
    void AddFace(const Vector3& v0, const Vector3& v1, const Vector3& v2, const Vector3& v3);
    /// Clip with a plane.
    void Clip(const Plane& plane);
    /// Clip with a bounding box.
    void Clip(const BoundingBox& box);
    /// Clip with a frustum.
    void Clip(const Frustum& box);
    /// Clear all faces.
    void Clear();
    /// Transform with a 3x3 matrix.
    void Transform(const Matrix3& transform);
    /// Transform with a 3x4 matrix.
    void Transform(const Matrix3x4& transform);
    
    /// Return transformed with a 3x3 matrix.
    Polyhedron Transformed(const Matrix3& transform) const;
    /// Return transformed with a 3x4 matrix.
    Polyhedron Transformed(const Matrix3x4& transform) const;
    /// Return whether is empty.
    bool Empty() const { return faces_.Empty(); }
};