assimp/code/PostProcessing/GenVertexNormalsProcess.h

/*
Open Asset Import Library (assimp)
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*/

/** @file Defines a post processing step to compute vertex normals
    for all loaded vertizes */
#ifndef AI_GENVERTEXNORMALPROCESS_H_INC
#define AI_GENVERTEXNORMALPROCESS_H_INC

#include "Common/assbin_chunks.h"
#include "Common/BaseProcess.h"

#include <assimp/mesh.h>

// Forward declarations
class GenNormalsTest;

namespace Assimp {

// ---------------------------------------------------------------------------
/** The GenFaceNormalsProcess computes vertex normals for all vertices
*/
class ASSIMP_API GenVertexNormalsProcess : public BaseProcess {
public:
    // -------------------------------------------------------------------
    /// The default class constructor / destructor.
    GenVertexNormalsProcess();
    ~GenVertexNormalsProcess() override = default;

    // -------------------------------------------------------------------
    /** Returns whether the processing step is present in the given flag.
    * @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;

    // -------------------------------------------------------------------
    /** Called prior to ExecuteOnScene().
    * The function is a request to the process to update its configuration
    * basing on the Importer's configuration property list.
    */
    void SetupProperties(const Importer* pImp) 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;

    // setter for configMaxAngle
    inline void SetMaxSmoothAngle(ai_real f) {
        configMaxAngle =f;
    }

    // -------------------------------------------------------------------
    /** Computes normals for a specific mesh
    *  @param pcMesh Mesh
    *  @param meshIndex Index of the mesh
    *  @return true if vertex normals have been computed
    */
    bool GenMeshVertexNormals (aiMesh* pcMesh, unsigned int meshIndex);

private:
    /** Configuration option: maximum smoothing angle, in radians*/
    ai_real configMaxAngle;
    mutable bool force_ = false;
    mutable bool flippedWindingOrder_ = false;
    mutable bool leftHanded_ = false;
};

} // end of namespace Assimp

#endif // !!AI_GENVERTEXNORMALPROCESS_H_INC