NvBlastExtExporterObjReader.h

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#ifndef NVBLASTEXTEXPORTEROBJREADER_H
#define NVBLASTEXTEXPORTEROBJREADER_H
#include <memory>
#include <string>
#include <vector>
#include "NvBlastExtExporter.h"

namespace Nv
{
namespace Blast
{
class Mesh;

class ObjFileReader : public IMeshFileReader
{
public:
    ObjFileReader();
    ~ObjFileReader() = default;

    virtual void release() override;

    /*
    Load from the specified file path, returning a mesh or nullptr if failed
    */
    virtual void loadFromFile(const char* filename) override;
    
    virtual uint32_t getVerticesCount() const override
    {
        return mVertexPositions.size();
    }

    virtual uint32_t getIndicesCount() const override
    {
        return mIndices.size();
    }

    virtual bool isCollisionLoaded() override;

    virtual uint32_t getCollision(uint32_t*& hullsOffset, Nv::Blast::CollisionHull**& hulls) override;

    virtual NvcVec3* getPositionArray() override;
    virtual NvcVec3* getNormalsArray() override;
    virtual NvcVec2* getUvArray() override;
    virtual uint32_t* getIndexArray() override;

    int32_t*        getMaterialIds() override { return mPerFaceMatId.data(); };

    int32_t*        getSmoothingGroups() override { return nullptr; };

    const char*         getMaterialName(int32_t id) override { return mMaterialNames[id].c_str(); }

    int32_t     getMaterialCount() { return mMaterialNames.size(); };

private:
    std::vector<NvcVec3>    mVertexPositions;
    std::vector<NvcVec3>    mVertexNormals;
    std::vector<NvcVec2>    mVertexUv;
    std::vector<uint32_t>       mIndices;

    std::vector<std::string>    mMaterialNames;
    std::vector<int32_t>        mPerFaceMatId;

};

}
}

#endif // NVBLASTEXTEXPORTEROBJREADER_H