assimp/code/PostProcessing/GenFaceNormalsProcess.h

/*
Open Asset Import Library (assimp)
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*/

/** @file Defines a post processing step to compute face normals for all loaded faces*/
#ifndef AI_GENFACENORMALPROCESS_H_INC
#define AI_GENFACENORMALPROCESS_H_INC

#include "Common/BaseProcess.h"
#include <assimp/mesh.h>

namespace Assimp {

// ---------------------------------------------------------------------------
/** 
 * @brief The GenFaceNormalsProcess computes face normals for all faces of all meshes
 */
class ASSIMP_API_WINONLY GenFaceNormalsProcess : public BaseProcess {
public:
    // -------------------------------------------------------------------
    /// The default class constructor / destructor.
    GenFaceNormalsProcess() = default;
    ~GenFaceNormalsProcess() override = default;

    // -------------------------------------------------------------------
    /** Returns whether the processing step is present in the given flag field.
    * @param pFlags The processing flags the importer was called with. A bitwise
    *   combination of #aiPostProcessSteps.
    * @return true if the process is present in this flag fields, false if not.
    */
    bool IsActive( unsigned int pFlags) const override;

    // -------------------------------------------------------------------
    /** Executes the post processing step on the given imported data.
    * At the moment a process is not supposed to fail.
    * @param pScene The imported data to work at.
    */
    void Execute( aiScene* pScene) override;

private:
    bool GenMeshFaceNormals(aiMesh* pcMesh);
    mutable bool force_ = false;
    mutable bool flippedWindingOrder_ = false;
    mutable bool leftHanded_ = false;
};

} // end of namespace Assimp

#endif // !!AI_GENFACENORMALPROCESS_H_INC