assimp/code/ColladaLoader.h

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/** Defines the collada loader class */
/*
Open Asset Import Library (ASSIMP)
----------------------------------------------------------------------
Copyright (c) 2006-2010, ASSIMP Development Team
All rights reserved.
Redistribution and use of this software in source and binary forms,
with or without modification, are permitted provided that the
following conditions are met:
* Redistributions of source code must retain the above
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
materials provided with the distribution.
* Neither the name of the ASSIMP team, nor the names of its
contributors may be used to endorse or promote products
derived from this software without specific prior
written permission of the ASSIMP Development Team.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
----------------------------------------------------------------------
*/
#ifndef AI_COLLADALOADER_H_INC
#define AI_COLLADALOADER_H_INC
#include "BaseImporter.h"
#include "ColladaParser.h"
namespace Assimp
{
struct ColladaMeshIndex
{
std::string mMeshID;
size_t mSubMesh;
std::string mMaterial;
ColladaMeshIndex( const std::string& pMeshID, size_t pSubMesh, const std::string& pMaterial)
: mMeshID( pMeshID), mSubMesh( pSubMesh), mMaterial( pMaterial)
{ }
bool operator < (const ColladaMeshIndex& p) const
{
if( mMeshID == p.mMeshID)
{
if( mSubMesh == p.mSubMesh)
return mMaterial < p.mMaterial;
else
return mSubMesh < p.mSubMesh;
} else
{
return mMeshID < p.mMeshID;
}
}
};
/** Loader class to read Collada scenes. Collada is over-engineered to death, with every new iteration bringing
* more useless stuff, so I limited the data to what I think is useful for games.
*/
class ColladaLoader : public BaseImporter
{
friend class Importer;
protected:
/** Constructor to be privately used by Importer */
ColladaLoader();
/** Destructor, private as well */
~ColladaLoader();
public:
/** Returns whether the class can handle the format of the given file.
* See BaseImporter::CanRead() for details. */
General - Added format auto-detection to most loaders - Simplified BaseImporter::CanRead() with some utility methods - improved fast_atof -> no overruns anymore. Fuck you, irrlicht. - added assimp_cmd tool to allow command line model processing. Mainly adebugging tool for internal purposes, but others might find it useful, too. - vc8/vc9: revision number is now written to DLL version header - mkutil: some batch scripts to simplify tagging & building of release versions - some API cleanup - fixing some doxygen markup (+now explicit use of @file <filename>) - Icon for assimp_view and assimp_cmd 3DS - Normal vectors are not anymore inverted in some cases - Improved pivot handling - Improved handling of x-flipped meshes Collada - fixed a minor bug (visual_scene element) LWS - WIP implementation. No animations yet, some bugs and crashes. - Animation system remains disabled, WIP code - many test files for LWS, but most of them test the anim support, which is, read above, currently disabled. STL - fixing a log warning which appears for every model - added binary&ascii test spider, exported from truespace MD3 - Cleaning up output tags for automatically joined player models. IRR - Fixing coordinate system issues. - Instance handling improved. - Some of the reported crashes not yet fixed. PretransformVertices - Numerous performance improvements. - Added config option to preserve the hierarchy during the step. RemoveRedundantMaterials - Added config option to specify a list of materials which are kept in every case. UNREAL - Added support for the old unreal data format (*.a,*.d,*.uc) - tested only with exports from Milkshape - more Unreal stuff to come soon git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@356 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
2009-03-05 22:32:13 +00:00
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);
/** Recursively constructs a scene node for the given parser node and returns it. */
aiNode* BuildHierarchy( const ColladaParser& pParser, const Collada::Node* pNode);
/** Resolve node instances */
void ResolveNodeInstances( const ColladaParser& pParser, const Collada::Node* pNode,
std::vector<Collada::Node*>& resolved);
/** Builds meshes for the given node and references them */
void BuildMeshesForNode( const ColladaParser& pParser, const Collada::Node* pNode,
aiNode* pTarget);
/** Creates a mesh for the given ColladaMesh face subset and returns the newly created mesh */
aiMesh* CreateMesh( const ColladaParser& pParser, const Collada::Mesh* pSrcMesh, const Collada::SubMesh& pSubMesh,
const Collada::Controller* pSrcController, size_t pStartVertex, size_t pStartFace);
/** Builds cameras for the given node and references them */
void BuildCamerasForNode( const ColladaParser& pParser, const Collada::Node* pNode,
aiNode* pTarget);
/** Builds lights for the given node and references them */
void BuildLightsForNode( const ColladaParser& pParser, const Collada::Node* pNode,
aiNode* pTarget);
/** Stores all meshes in the given scene */
void StoreSceneMeshes( aiScene* pScene);
/** Stores all materials in the given scene */
void StoreSceneMaterials( aiScene* pScene);
/** Stores all lights in the given scene */
void StoreSceneLights( aiScene* pScene);
/** Stores all cameras in the given scene */
void StoreSceneCameras( aiScene* pScene);
/** Stores all textures in the given scene */
void StoreSceneTextures( aiScene* pScene);
/** Stores all animations
* @param pScene target scene to store the anims
*/
void StoreAnimations( aiScene* pScene, const ColladaParser& pParser);
/** Stores all animations for the given source anim and its nested child animations
* @param pScene target scene to store the anims
* @param pSrcAnim the source animation to process
* @param pPrefix Prefix to the name in case of nested animations
*/
void StoreAnimations( aiScene* pScene, const ColladaParser& pParser, const Collada::Animation* pSrcAnim, const std::string pPrefix);
/** Constructs the animation for the given source anim */
void CreateAnimation( aiScene* pScene, const ColladaParser& pParser, const Collada::Animation* pSrcAnim, const std::string& pName);
/** Constructs materials from the collada material definitions */
void BuildMaterials( const ColladaParser& pParser, aiScene* pScene);
/** Fill materials from the collada material definitions */
void FillMaterials( const ColladaParser& pParser, aiScene* pScene);
/** Resolve UV channel mappings*/
void ApplyVertexToEffectSemanticMapping(Collada::Sampler& sampler,
const Collada::SemanticMappingTable& table);
/** Add a texture and all of its sampling properties to a material*/
void AddTexture ( Assimp::MaterialHelper& mat, const ColladaParser& pParser,
const Collada::Effect& effect,
const Collada::Sampler& sampler,
aiTextureType type, unsigned int idx = 0);
/** Resolves the texture name for the given effect texture entry */
const aiString& FindFilenameForEffectTexture( const ColladaParser& pParser,
const Collada::Effect& pEffect, const std::string& pName);
/** Converts a path read from a collada file to the usual representation */
void ConvertPath( aiString& ss);
/** Reads a float value from an accessor and its data array.
* @param pAccessor The accessor to use for reading
* @param pData The data array to read from
* @param pIndex The index of the element to retrieve
* @param pOffset Offset into the element, for multipart elements such as vectors or matrices
* @return the specified value
*/
float ReadFloat( const Collada::Accessor& pAccessor, const Collada::Data& pData, size_t pIndex, size_t pOffset) const;
/** Reads a string value from an accessor and its data array.
* @param pAccessor The accessor to use for reading
* @param pData The data array to read from
* @param pIndex The index of the element to retrieve
* @return the specified value
*/
const std::string& ReadString( const Collada::Accessor& pAccessor, const Collada::Data& pData, size_t pIndex) const;
/** Recursively collects all nodes into the given array */
void CollectNodes( const aiNode* pNode, std::vector<const aiNode*>& poNodes) const;
/** Finds a node in the collada scene by the given name */
const Collada::Node* FindNode( const Collada::Node* pNode, const std::string& pName) const;
/** Finds a node in the collada scene by the given SID */
const Collada::Node* FindNodeBySID( const Collada::Node* pNode, const std::string& pSID) const;
/** Finds a proper name for a node derived from the collada-node's properties */
std::string FindNameForNode( const Collada::Node* pNode) const;
protected:
/** Filename, for a verbose error message */
std::string mFileName;
/** Which mesh-material compound was stored under which mesh ID */
std::map<ColladaMeshIndex, size_t> mMeshIndexByID;
/** Which material was stored under which index in the scene */
std::map<std::string, size_t> mMaterialIndexByName;
/** Accumulated meshes for the target scene */
std::vector<aiMesh*> mMeshes;
/** Temporary material list */
std::vector<std::pair<Collada::Effect*, aiMaterial*> > newMats;
/** Temporary camera list */
std::vector<aiCamera*> mCameras;
/** Temporary light list */
std::vector<aiLight*> mLights;
/** Temporary texture list */
std::vector<aiTexture*> mTextures;
/** Accumulated animations for the target scene */
std::vector<aiAnimation*> mAnims;
};
} // end of namespace Assimp
#endif // AI_COLLADALOADER_H_INC