assimp/code/XFileImporter.h

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

Copyright (c) 2006-2010, ASSIMP Development Team
All rights reserved.

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  copyright notice, this list of conditions and the
  following disclaimer.

* Redistributions in binary form must reproduce the above
  copyright notice, this list of conditions and the
  following disclaimer in the documentation and/or other
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* Neither the name of the ASSIMP team, nor the names of its
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  derived from this software without specific prior
  written permission of the ASSIMP Development Team.

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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
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*/

/** @file  XFileImporter.h 
 *  @brief Definition of the XFile importer class. 
 */
#ifndef AI_XFILEIMPORTER_H_INC
#define AI_XFILEIMPORTER_H_INC

#include <map>

#include "XFileHelper.h"
#include "BaseImporter.h"

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

struct aiNode;

namespace Assimp	{

namespace XFile {
struct Scene;
struct Node;
}

// ---------------------------------------------------------------------------
/** The XFileImporter is a worker class capable of importing a scene from a
 * DirectX file .x
 */
class XFileImporter : public BaseImporter
{
public:
	XFileImporter();
	~XFileImporter();


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::set<std::string>& extensions);

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

	// -------------------------------------------------------------------
	/** Constructs the return data structure out of the imported data.
	 * @param pScene The scene to construct the return data in.
	 * @param pData The imported data in the internal temporary 
	 *   representation.
	 */
	void CreateDataRepresentationFromImport( aiScene* pScene, 
		const XFile::Scene* pData);

	// -------------------------------------------------------------------
	/** Recursively creates scene nodes from the imported hierarchy.
	 * The meshes and materials of the nodes will be extracted on the way.
	 * @param pScene The scene to construct the return data in.
	 * @param pParent The parent node where to create new child nodes
	 * @param pNode The temporary node to copy.
	 * @return The created node 
	 */
	aiNode* CreateNodes( aiScene* pScene, aiNode* pParent, 
		const XFile::Node* pNode);

	// -------------------------------------------------------------------
	/** Converts all meshes in the given mesh array. Each mesh is split 
	 * up per material, the indices of the generated meshes are stored in 
	 * the node structure.
	 * @param pScene The scene to construct the return data in.
	 * @param pNode The target node structure that references the
	 *   constructed meshes.
	 * @param pMeshes The array of meshes to convert
	 */
	void CreateMeshes( aiScene* pScene, aiNode* pNode, 
		const std::vector<XFile::Mesh*>& pMeshes);

	// -------------------------------------------------------------------
	/** Converts the animations from the given imported data and creates 
	*  them in the scene.
	 * @param pScene The scene to hold to converted animations
	 * @param pData The data to read the animations from
	 */
	void CreateAnimations( aiScene* pScene, const XFile::Scene* pData);

	// -------------------------------------------------------------------
	/** Converts all materials in the given array and stores them in the
	 *  scene's material list.
	 * @param pScene The scene to hold the converted materials.
	 * @param pMaterials The material array to convert.
	 */
	void ConvertMaterials( aiScene* pScene, 
		const std::vector<XFile::Material>& pMaterials);

protected:
	/** Buffer to hold the loaded file */
	std::vector<char> mBuffer;

	/** Imported materials: index in the scene's material list by name */
	std::map<std::string, unsigned int> mImportedMats;
};

} // end of namespace Assimp

#endif // AI_BASEIMPORTER_H_INC