assimp/code/GenVertexNormalsProcess.h

/*
Open Asset Import Library (ASSIMP)
----------------------------------------------------------------------

Copyright (c) 2006-2008, ASSIMP Development Team
All rights reserved.

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  following disclaimer.

* Redistributions in binary form must reproduce the above
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  written permission of the ASSIMP Development Team.

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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 "BaseProcess.h"
#include "../include/aiMesh.h"

class GenNormalsTest;

namespace Assimp {

// ---------------------------------------------------------------------------
/** The GenFaceNormalsProcess computes vertex normals for all vertizes
*/
class ASSIMP_API GenVertexNormalsProcess : public BaseProcess
{
	friend class Importer;
	friend class ::GenNormalsTest;

protected:
	/** Constructor to be privately used by Importer */
	GenVertexNormalsProcess();

	/** Destructor, private as well */
	~GenVertexNormalsProcess();

public:
	// -------------------------------------------------------------------
	/** 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;
	
	// -------------------------------------------------------------------
	/** 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);

	// -------------------------------------------------------------------
	/** 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);


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

protected:

	// -------------------------------------------------------------------
	/** Computes normals for a specific mesh
	*  @param pcMesh Mesh
	*  @return true if vertex normals have been computed
	*/
	bool GenMeshVertexNormals (aiMesh* pcMesh);

private:

	/** Configuration option: maximum smoothing angle, in radians*/
	float configMaxAngle;
};

} // end of namespace Assimp

#endif // !!AI_GENVERTEXNORMALPROCESS_H_INC