o3de/Gems/Atom/Asset/ImageProcessingAtom/External/CubeMapGen/CBBoxInt32.cpp

//=============================================================================
//CBBoxInt32
// 3D bounding box with int32 coordinates
//
//=============================================================================
// (C) 2005 ATI Research, Inc., All rights reserved.
//=============================================================================
// Modified from original


#include "CBBoxInt32.h"

#define CP_MIN_INT32 0x80000000
#define CP_MAX_INT32 0x7fffffff
#define CP_MIN(a, b)  (((a) < (b)) ? (a) : (b)) 
#define CP_MAX(a, b)  (((a) > (b)) ? (a) : (b)) 


namespace ImageProcessingAtom
{
    //--------------------------------------------------------------------------------------
    // CBBoxInt32
    //--------------------------------------------------------------------------------------
    CBBoxInt32::CBBoxInt32(void)
    {
        Clear();
    }


    //--------------------------------------------------------------------------------------
    // Text to see if CBBoxInt32 is empty or not
    //--------------------------------------------------------------------------------------
    bool CBBoxInt32::Empty(void)
    {
        if ((m_minCoord[0] > m_maxCoord[0]) ||
            (m_minCoord[1] > m_maxCoord[1]) ||
            (m_minCoord[2] > m_maxCoord[2]))
        {
            return true;
        }
        else
        {
            return false;
        }
    }


    //--------------------------------------------------------------------------------------
    // Clear bounding box extents
    //--------------------------------------------------------------------------------------
    void CBBoxInt32::Clear(void)
    {
        m_minCoord[0] = CP_MAX_INT32;
        m_minCoord[1] = CP_MAX_INT32;
        m_minCoord[2] = CP_MAX_INT32;
        m_maxCoord[0] = CP_MIN_INT32;
        m_maxCoord[1] = CP_MIN_INT32;
        m_maxCoord[2] = CP_MIN_INT32;
    }


    //--------------------------------------------------------------------------------------
    // Augment bounding box extents by specifying point to include in bounding box
    //--------------------------------------------------------------------------------------
    void CBBoxInt32::Augment(int32 aX, int32 aY, int32 aZ)
    {
        m_minCoord[0] = CP_MIN(m_minCoord[0], aX);
        m_minCoord[1] = CP_MIN(m_minCoord[1], aY);
        m_minCoord[2] = CP_MIN(m_minCoord[2], aZ);
        m_maxCoord[0] = CP_MAX(m_maxCoord[0], aX);
        m_maxCoord[1] = CP_MAX(m_maxCoord[1], aY);
        m_maxCoord[2] = CP_MAX(m_maxCoord[2], aZ);
    }


    //--------------------------------------------------------------------------------------
    // Augment bounding box extents by specifying x coordinate to include in bounding box
    //--------------------------------------------------------------------------------------
    void CBBoxInt32::AugmentX(int32 aX)
    {
        m_minCoord[0] = CP_MIN(m_minCoord[0], aX);
        m_maxCoord[0] = CP_MAX(m_maxCoord[0], aX);
    }


    //--------------------------------------------------------------------------------------
    // Augment bounding box extents by specifying x coordinate to include in bounding box
    //--------------------------------------------------------------------------------------
    void CBBoxInt32::AugmentY(int32 aY)
    {
        m_minCoord[1] = CP_MIN(m_minCoord[1], aY);
        m_maxCoord[1] = CP_MAX(m_maxCoord[1], aY);
    }


    //--------------------------------------------------------------------------------------
    // Augment bounding box extents by specifying x coordinate to include in bounding box
    //--------------------------------------------------------------------------------------
    void CBBoxInt32::AugmentZ(int32 aZ)
    {
        m_minCoord[2] = CP_MIN(m_minCoord[2], aZ);
        m_maxCoord[2] = CP_MAX(m_maxCoord[2], aZ);
    }


    //--------------------------------------------------------------------------------------
    // Clamp minimum values in bbox to be no larger than aX, aY, aZ
    //--------------------------------------------------------------------------------------
    void CBBoxInt32::ClampMin(int32 aX, int32 aY, int32 aZ)
    {
        m_minCoord[0] = CP_MAX(m_minCoord[0], aX);
        m_minCoord[1] = CP_MAX(m_minCoord[1], aY);
        m_minCoord[2] = CP_MAX(m_minCoord[2], aZ);
    }


    //--------------------------------------------------------------------------------------
    // Clamp maximum values in bbox to be no larger than aX, aY, aZ
    //--------------------------------------------------------------------------------------
    void CBBoxInt32::ClampMax(int32 aX, int32 aY, int32 aZ)
    {
        m_maxCoord[0] = CP_MIN(m_maxCoord[0], aX);
        m_maxCoord[1] = CP_MIN(m_maxCoord[1], aY);
        m_maxCoord[2] = CP_MIN(m_maxCoord[2], aZ);
    }
} //namespace ImageProcessingAtom