assimp/code/ASELoader.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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  following disclaimer in the documentation and/or other
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  derived from this software without specific prior
  written permission of the ASSIMP Development Team.

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*/

/** @file  ASELoader.h
 *  @brief Definition of the .ASE importer class.
 */
#ifndef AI_ASELOADER_H_INCLUDED
#define AI_ASELOADER_H_INCLUDED

#include "BaseImporter.h"
#include "../include/aiTypes.h"

struct aiNode;
#include "ASEParser.h"

namespace Assimp {
class MaterialHelper;

using namespace ASE;

// --------------------------------------------------------------------------------
/** Importer class for the 3DS ASE ASCII format
 *
 * fixme: consider code cleanup
 */
class ASEImporter : public BaseImporter
{
	friend class Importer;

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

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

public:

	// -------------------------------------------------------------------
	/** Returns whether the class can handle the format of the given file. 
	 * See BaseImporter::CanRead() for details.	
	 */
	bool CanRead( const std::string& pFile, IOSystem* pIOHandler,
		bool checkSig) const;

protected:

	// -------------------------------------------------------------------
	/** Called by Importer::GetExtensionList() for each loaded importer.
	 * See BaseImporter::GetExtensionList() for details
	 */
	void GetExtensionList(std::string& append);

	// -------------------------------------------------------------------
	/** Imports the given file into the given scene structure. 
	* See BaseImporter::InternReadFile() for details
	*/
	void InternReadFile( const std::string& pFile, aiScene* pScene,
		IOSystem* pIOHandler);

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

	// -------------------------------------------------------------------
	/** Generate normal vectors basing on smoothing groups
	 * (in some cases the normal are already contained in the file)
	 * \param mesh Mesh to work on
	 * \return false if the normals have been recomputed
	 */
	bool GenerateNormals(ASE::Mesh& mesh);

	// -------------------------------------------------------------------
	/** Create valid vertex/normal/UV/color/face lists.
	 *  All elements are unique, faces have only one set of indices
	 *  after this step occurs.
	 * \param mesh Mesh to work on
	 */
	void BuildUniqueRepresentation(ASE::Mesh& mesh);

	/** Create one-material-per-mesh meshes ;-)
	 * \param mesh Mesh to work with
	 *  \param Receives the list of all created meshes
	 */
	void ConvertMeshes(ASE::Mesh& mesh, std::vector<aiMesh*>& avOut);

	// -------------------------------------------------------------------
	/** Convert a material to a MaterialHelper object
	 * \param mat Input material
	 */
	void ConvertMaterial(ASE::Material& mat);

	// -------------------------------------------------------------------
	/** Setup the final material indices for each mesh
	 */
	void BuildMaterialIndices();

	// -------------------------------------------------------------------
	/** Build the node graph
	 */
	void BuildNodes();

	// -------------------------------------------------------------------
	/** Build output cameras
	 */
	void BuildCameras();

	// -------------------------------------------------------------------
	/** Build output lights
	 */
	void BuildLights();

	// -------------------------------------------------------------------
	/** Build output animations
	 */
	void BuildAnimations();

	// -------------------------------------------------------------------
	/** Add sub nodes to a node
	 *  \param pcParent parent node to be filled
	 *  \param szName Name of the parent node
	 *  \param matrix Current transform
	 */
	void AddNodes(std::vector<BaseNode*>& nodes,
		aiNode* pcParent,const char* szName);

	void AddNodes(std::vector<BaseNode*>& nodes,
		aiNode* pcParent,const char* szName,
		const aiMatrix4x4& matrix);

	void AddMeshes(const ASE::BaseNode* snode,aiNode* node);

	// -------------------------------------------------------------------
	/** Generate a default material and add it to the parser's list
	 *  Called if no material has been found in the file (rare for ASE,
	 *  but not impossible)
	 */
	void GenerateDefaultMaterial();

protected:

	/** Parser instance */
	ASE::Parser* mParser;

	/** Buffer to hold the loaded file */
	char* mBuffer;

	/** Scene to be filled */
	aiScene* pcScene;

	std::vector<BaseNode*> nodes;

	/** Config options: Recompute the normals in every case - WA
	    for 3DS Max broken ASE normal export */
	bool configRecomputeNormals;
};

} // end of namespace Assimp

#endif // AI_3DSIMPORTER_H_INC