src/lib/bgl.hpp

//
// AutoCoast: Automatic Coastline scenery generator for Flight Simulator
//
// Copyright (c) 2004, Takuya Murakami. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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// bgl.hpp : BGL base class

#ifndef _BGL_HPP
#define _BGL_HPP

#include <vector>
using namespace std;

#include "bbox.hpp"
#include "databuf.hpp"

class DataChunk
{
protected:
        //LWMIndexEntry ie;

        DataBuf         *databuf;
        int             m_u, m_v;       

public:
        DataChunk();
        ~DataChunk();

        inline void setuv(int u, int v)   { m_u = u; m_v = v; }
        inline void getuv(int &u, int &v) { u = m_u; v = m_v; }

        int getDataSize(void) { return databuf->size(); }
        
        void WriteDataChunk(FILE *fp);
};

class Bgl 
{
protected:
        FILE                    *fp;
        vector<DataChunk*>      datachunk;
        BoundingBox             bbox;

        void WriteBGLHeader(const char *LWMHeaderLabel, const char *VTPHeaderLabel);
        void UpdateBoundingBox(BoundingBox &bbox);

public:
        Bgl();
        virtual ~Bgl();

        void OpenFile(const char *fname);

        virtual DataChunk *NewDataChunk(int u, int v, BoundingBox &bb) = 0;
};

#endif
