GeometryBlock.h

Go to the documentation of this file.

/*
--------------------------------------------------------------------------------
This source file is part of SkyX.
Visit http://www.paradise-studios.net/products/skyx/

Copyright (C) 2009-2012 Xavier Verguín González <xavyiy@gmail.com>

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.

This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/lesser.txt.
--------------------------------------------------------------------------------
*/

#ifndef _SkyX_VClouds_GeometryBlock_H_
#define _SkyX_VClouds_GeometryBlock_H_

#include "Prerequisites.h"

namespace SkyX { namespace VClouds {

  class VClouds;

  class DllExport GeometryBlock
  {
    public:
      struct VERTEX
      {        // Position
        float x, y, z,
              // 3D Coords
              xc, yc, zc,
              // Noise coords
              u, v,
              // Opacity
              o;
      };

      GeometryBlock(VClouds *vc,
          const float& Height, const Ogre::Radian& Alpha,
          const Ogre::Radian& Beta,
          const float& Radius, const Ogre::Radian& Phi, const int& Na,
          const int& Nb, const int& Nc, const int& A,
          const int& B, const int& C, const int& Position);

      ~GeometryBlock();

      void create();

      void remove();

      void updateGeometry(Ogre::Camera* c, const Ogre::Vector3& displacement);

      inline const bool& isCreated() const
      {
        return mCreated;
      }

      inline Ogre::MeshPtr getMesh()
      {
        return mMesh;
      }

      inline Ogre::SubMesh* getSubMesh()
      {
        return mSubMesh;
      }

      inline Ogre::Entity* getEntity()
      {
        return mEntity;
      }

      inline Ogre::HardwareVertexBufferSharedPtr &getHardwareVertexBuffer()
      {
        return mVertexBuffer;
      }

      inline Ogre::HardwareIndexBufferSharedPtr &getHardwareIndexBuffer()
      {
        return mIndexBuffer;
      }

      inline void setWorldOffset(const Ogre::Vector2& WorldOffset)
      {
        mWorldOffset = WorldOffset;
      }

      bool isInFrustum(Ogre::Camera *c) const;

    private:
      const Ogre::AxisAlignedBox _buildAABox(const float& fd) const;

      void _calculateDataSize();

      void _createGeometry();

      void _updateGeometry();

      void _updateZoneCSlice(const int& n);

      void _updateZoneBSlice(const int& n);

      void _updateZoneASlice(const int& n);

      void _setVertexData(const int& index, const Ogre::Vector3& p,
                          const float& o);

      VClouds *mVClouds;

      bool mCreated;

      Ogre::SubMesh *mSubMesh;

      Ogre::Entity *mEntity;

      VERTEX *mVertices;

      int mNumberOfTriangles;
      int mVertexCount;

      float mHeight;
      Ogre::Radian mAlpha, mBeta;

      float mRadius;

      Ogre::Radian mPhi;
      int mNa, mNb, mNc;
      float mA, mB, mC;

      int mPosition;

      Ogre::Vector3 mDisplacement;
      Ogre::Vector2 mWorldOffset;

      Ogre::Camera* mCamera;

      float mLastFallingDistance;

      Ogre::MeshPtr mMesh;
      Ogre::HardwareVertexBufferSharedPtr mVertexBuffer;
      Ogre::HardwareIndexBufferSharedPtr  mIndexBuffer;

      Ogre::Vector2 mV2Cos;
      Ogre::Vector2 mV2Sin;
      float mBetaSin;
      float mAlphaSin;
  };
}}
#endif