OsgMeshRepresentation.h

// This file is a part of the OpenSurgSim project.
// Copyright 2013, SimQuest Solutions Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef SURGSIM_GRAPHICS_OSGMESHREPRESENTATION_H
#define SURGSIM_GRAPHICS_OSGMESHREPRESENTATION_H

#include <memory>

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

#include "SurgSim/Framework/Macros.h"
#include "SurgSim/Framework/ObjectFactory.h"
#include "SurgSim/Graphics/OsgRepresentation.h"
#include "SurgSim/Graphics/MeshRepresentation.h"
#include "SurgSim/Framework/LockedContainer.h"

#if defined(_MSC_VER)
#pragma warning(push)
#pragma warning(disable:4250)
#endif

namespace osg
{
class Geode;
class Geometry;
class DrawElementsUInt;
}

namespace SurgSim
{
namespace Graphics
{
class Mesh;

SURGSIM_STATIC_REGISTRATION(OsgMeshRepresentation);

class OsgMeshRepresentation : public OsgRepresentation, public MeshRepresentation
{
public:
    explicit OsgMeshRepresentation(const std::string& name);

    ~OsgMeshRepresentation();

    SURGSIM_CLASSNAME(SurgSim::Graphics::OsgMeshRepresentation);

    std::shared_ptr<Mesh> getMesh() override;

    void setMesh(std::shared_ptr<SurgSim::Framework::Asset> mesh) override;

    void loadMesh(const std::string& fileName) override;

    void setShape(std::shared_ptr<SurgSim::Math::Shape> shape) override;

    void setUpdateOptions(int val) override;
    int getUpdateOptions() const override;

    osg::ref_ptr<osg::Geometry> getOsgGeometry() const;

    void updateMesh(const SurgSim::Graphics::Mesh& mesh) override;

protected:
    void doUpdate(double dt) override;

    bool doInitialize() override;

    void privateUpdateMesh(const SurgSim::Graphics::Mesh& mesh);

private:
    int m_updateOptions;

    std::shared_ptr<Mesh> m_mesh;

    std::string m_filename;

    osg::ref_ptr<osg::Switch> m_meshSwitch;
    osg::ref_ptr<osg::Geometry> m_geometry;

    int updateOsgArrays(const Mesh& mesh, osg::Geometry* geometry);

    void updateVertices(const Mesh& mesh, osg::Geometry* geometry, int updateOptions);

    void updateNormals(osg::Geometry* geometry);

    void updateTriangles(const Mesh& mesh, osg::Geometry* geometry);

    osg::Object::DataVariance getDataVariance(int updateOption);

    void buildGeometry();

    size_t m_updateCount;

    Framework::LockedContainer<Mesh> m_writeBuffer;

};

#if defined(_MSC_VER)
#pragma warning(pop)
#endif

}; // Graphics
}; // SurgSim

#endif // SURGSIM_GRAPHICS_OSGMESHREPRESENTATION_H