GeometryBlock.h

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/*
--------------------------------------------------------------------------------
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 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, const Ogre::Vector3& distance);
 
        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;
        }
 
        const 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);
 
        bool mCreated;
 
        Ogre::MeshPtr mMesh;
        Ogre::SubMesh *mSubMesh;
        Ogre::Entity *mEntity;
 
        Ogre::HardwareVertexBufferSharedPtr mVertexBuffer;
        Ogre::HardwareIndexBufferSharedPtr  mIndexBuffer;
 
        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::Vector2 mV2Cos;
        Ogre::Vector2 mV2Sin;
        float mBetaSin;
        float mAlphaSin;
 
        Ogre::Vector3 mDisplacement;
        Ogre::Vector2 mWorldOffset;
 
        VClouds *mVClouds;
        Ogre::Camera* mCamera;
 
        Ogre::Vector3 mDistance;
 
        float mLastFallingDistance;
    };
 
 
}}
 
#endif