F:/My Projects/LSEngine/Modules/LSPhysicsLib/Src/BoundingBoxes/LSPAabb2d.h

#ifndef __LSP_AABB2D_H__
#define __LSP_AABB2D_H__

#include "../LSPPhysicsLib.h"
#include "Matrix/LSMMatrix4x4.h"
#include "Vector/LSMVector2.h"

namespace lsp {

        // == Enumerations.
        enum LSP_AABB_2D_CORNERS {
                LSP_A2C_UPPER_LEFT,
                LSP_A2C_UPPER_RIGHT,

                LSP_A2C_LOWER_LEFT,
                LSP_A2C_LOWER_RIGHT,
        };

        class CAabb2d {
                // All is public.  This class has no secrets.
        public :
                // == Functions.
                LSVOID LSE_CALL                                                 MakeInfinitelySmall();

                LSVOID LSE_CALL                                                 ComputeAabbFromPointArray( const CVector2 * _pvPoints, LSUINT32 _uiTotal );

                LSVOID LSE_CALL                                                 ComputeAabbFromAabbAndMatrix( const CAabb2d &_aabb2Other, const CMatrix4x4 &_mTrans );

                LSVOID LSE_CALL                                                 Encompass( const CAabb2d &_aabb2Other );

                LSVOID LSE_CALL                                                 Encompass( const CVector2 &_vOther );

                LSVOID LSE_CALL                                                 GetBox( CVector2 _vPoints[4] ) const;

                CVector2 LSE_CALL                                               GetCenter() const;

                LSREAL LSE_CALL                                                 GetSizeX() const;

                LSREAL LSE_CALL                                                 GetSizeY() const;

                LSREAL LSE_CALL                                                 GetArea() const;



                // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
                // DISTANCE TESTS
                // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
                // == Points.
                CVector2 LSE_CALL                                               ClosestPointToPoint( const CVector2 &_vPoint ) const;
                
                LSREAL LSE_CALL                                                 GetSqDistFromPoint( const CVector2 &_vPoint ) const;


                // == Members.
                CVector2                                                                m_vMin;

                CVector2                                                                m_vMax;
        };


        // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
        // DEFINITIONS
        // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
        // == Functions.
        LSE_INLINE LSREAL LSE_CALL CAabb2d::GetSizeX() const {
                return m_vMax.x - m_vMin.x;
        }

        LSE_INLINE LSREAL LSE_CALL CAabb2d::GetSizeY() const {
                return m_vMax.y - m_vMin.y;
        }

}       // namespace lsp

#endif  // __LSP_AABB2D_H__