storage.hpp

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#ifndef COMPONENTS_TERRAIN_STORAGE_H
#define COMPONENTS_TERRAIN_STORAGE_H

#include <vector>

#include <osg/Vec2f>
#include <osg/Vec3f>
#include <osg/ref_ptr>
#include <osg/Array>

#include "defs.hpp"

namespace osg
{
    class Image;
}

namespace Terrain
{
    class Storage
    {
    public:
        virtual ~Storage() {}

    public:
        virtual void getBounds(float& minX, float& maxX, float& minY, float& maxY) = 0;

        virtual bool getMinMaxHeights (float size, const osg::Vec2f& center, float& min, float& max) = 0;

        virtual void fillVertexBuffers (int lodLevel, float size, const osg::Vec2f& center,
                                osg::ref_ptr<osg::Vec3Array> positions,
                                osg::ref_ptr<osg::Vec3Array> normals,
                                osg::ref_ptr<osg::Vec4Array> colours) = 0;

        typedef std::vector<osg::ref_ptr<osg::Image> > ImageVector;
        virtual void getBlendmaps (float chunkSize, const osg::Vec2f& chunkCenter, bool pack,
                           ImageVector& blendmaps,
                           std::vector<LayerInfo>& layerList) = 0;

        virtual float getHeightAt (const osg::Vec3f& worldPos) = 0;

        virtual float getCellWorldSize() = 0;

        virtual int getCellVertices() = 0;

        virtual int getBlendmapScale(float chunkSize) = 0;
    };

}

#endif