/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield 
 *
 * This library is open source and may be redistributed and/or modified under  
 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
 * (at your option) any later version.  The full license is in LICENSE file
 * included with this distribution, and on the openscenegraph.org website.
 * 
 * This library 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 
 * OpenSceneGraph Public License for more details.
*/

#ifndef OSGTERRAIN_LAYER
#define OSGTERRAIN_LAYER 1

#include <osg/Image>
#include <osg/Shape>
#include <osg/Array>

#include <osgTerrain/Locator>

namespace osgTerrain {

class OSGTERRAIN_EXPORT Layer : public osg::Object
{
    public:

        Layer();

        /** Copy constructor using CopyOp to manage deep vs shallow copy.*/
        Layer(const Layer&,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
        
        META_Object(osgTerrain, Layer);
        
        
        void setLocator(Locator* locator) { _locator = locator; }
        
        Locator* getLocator() { return _locator.get(); }
        
        const Locator* getLocator() const { return _locator.get(); }

        virtual osg::BoundingSphere computeBound() const;

    protected:

        virtual ~Layer();

        osg::ref_ptr<Locator>           _locator;

};

class OSGTERRAIN_EXPORT ImageLayer : public Layer
{
    public:

        ImageLayer();

        /** Copy constructor using CopyOp to manage deep vs shallow copy.*/
        ImageLayer(const ImageLayer& imageLayer,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
        

        void setImage(osg::Image* image);
        
        osg::Image* getImage() { return _image.get(); }

        const osg::Image* getImage() const { return _image.get(); }

    protected:

        virtual ~ImageLayer() {}

        osg::ref_ptr<osg::Image> _image;

};

class OSGTERRAIN_EXPORT HeightFieldLayer : public Layer
{
    public:

        HeightFieldLayer();

        /** Copy constructor using CopyOp to manage deep vs shallow copy.*/
        HeightFieldLayer(const HeightFieldLayer& hfLayer,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
        

        void setHeightField(osg::HeightField* hf);
        
        osg::HeightField* getHeightField() { return _heightField.get(); }

        const osg::HeightField* getHeightField() const { return _heightField.get(); }

    protected:

        virtual ~HeightFieldLayer() {}

        osg::ref_ptr<osg::HeightField> _heightField;

};


class OSGTERRAIN_EXPORT ArrayLayer : public Layer
{
    public:

        ArrayLayer();

        /** Copy constructor using CopyOp to manage deep vs shallow copy.*/
        ArrayLayer(const ArrayLayer&,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
        

        void setArray(osg::Array* array);
        
        osg::Array* getArray() { return _array.get(); }

        const osg::Array* getArray() const { return _array.get(); }

    protected:

        virtual ~ArrayLayer() {}

        osg::ref_ptr<osg::Array> _array;

};

}

#endif