include/vrvGraphics/DtBoundingBox.h

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/*****************************************************************************
 * Copyright (c) 2011 MAK Technologies, Inc.
 * All rights reserved.
 *****************************************************************************/


#pragma once

#include <vrvGraphics/vrvGraphics.h>

namespace makVrv
{

   class DT_DLL_VRVGRAPHICS DtPoint
   {
   public:

      DtPoint( float x = 0.0f, float y = 0.0f )
         : myX( x )
         , myY( y )
      {
      }

      inline DtPoint& operator+=( const DtPoint& p2 )
      {
         myX += p2.myX;
         myY += p2.myY;
         return *this;
      }

      inline DtPoint& operator-=( const DtPoint& p2 )
      {
         myX -= p2.myX;
         myY -= p2.myY;
         return *this;
      }

      inline bool operator==( const DtPoint& p2 ) const
      {
         return myX == p2.myX && myY == p2.myY;
      }

      inline bool operator!=( const DtPoint& p2 ) const
      {
         return myX != p2.myX || myY != p2.myY;
      }

      inline DtPoint operator+( const DtPoint& p2 ) const
      {
         return DtPoint( myX + p2.myX, myY + p2.myY );
      }

      inline DtPoint operator-( const DtPoint& p2 ) const
      {
         return DtPoint( myX - p2.myX, myY - p2.myY );
      }

   public:

      float myX;
      float myY;

   };


   class DT_DLL_VRVGRAPHICS DtPen
   {
   public:

      DtPen( const DtPoint& location );

      DtPen( float x = 0.0f, float y = 0.0f );

   public:

      DtPoint myLocation;
      DtPoint mySpacing;
      float myColor[4];

   };


   class DT_DLL_VRVGRAPHICS DtBoundingBox
   {
   public:

      DtBoundingBox();

      DtBoundingBox( float lx, float ly, float ux, float uy );

      //Construct a bounding box from a lower point and an upper point.
      DtBoundingBox( DtPoint l, DtPoint u );

      ~DtBoundingBox();

      void invalidate();

      bool valid() const;

      DtBoundingBox& operator+=( const DtPoint vector );

      DtBoundingBox& operator|=( const DtBoundingBox& other );

      void centerOn( DtPoint pos );

      void expandTo( float width, float height );

      void getCenter( DtPoint& point ) const;


      inline float width() const { return myUpperPoint.myX - myLowerPoint.myX;}

      inline float height() const { return myUpperPoint.myY - myLowerPoint.myY;}



      inline DtPoint& upperPoint() { return myUpperPoint; }

      inline const DtPoint& upperPoint() const { return myUpperPoint; }

      inline DtPoint& lowerPoint() { return myLowerPoint; }

      inline const DtPoint& lowerPoint() const { return myLowerPoint; }


      void toPoints( float points[8] ) const;

   protected:

      DtPoint myLowerPoint;
      DtPoint myUpperPoint;

   };

}