- first draft of the Collada importer. Compiles and runs fine, but not functional yet.

- added a "rotation around arbitrary axis" function to the matrix class

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@238 67173fc5-114c-0410-ac8e-9d2fd5bffc1f

code/ColladaLoader.cpp

@@ -0,0 +1,116 @@
+/** Implementation of the Collada loader */
+/*
+---------------------------------------------------------------------------
+Open Asset Import Library (ASSIMP)
+---------------------------------------------------------------------------
+
+Copyright (c) 2006-2008, 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.
+---------------------------------------------------------------------------
+*/
+
+#include "AssimpPCH.h"
+#include "../include/aiAnim.h"
+#include "ColladaLoader.h"
+#include "ColladaParser.h"
+
+using namespace Assimp;
+
+// ------------------------------------------------------------------------------------------------
+// Constructor to be privately used by Importer
+ColladaLoader::ColladaLoader()
+{
+}
+
+// ------------------------------------------------------------------------------------------------
+// Destructor, private as well
+ColladaLoader::~ColladaLoader()
+{
+}
+
+// ------------------------------------------------------------------------------------------------
+// Returns whether the class can handle the format of the given file. 
+bool ColladaLoader::CanRead( const std::string& pFile, IOSystem* pIOHandler) const
+{
+	// check file extension 
+	std::string::size_type pos = pFile.find_last_of('.');
+	// no file extension - can't read
+	if( pos == std::string::npos)
+		return false;
+	std::string extension = pFile.substr( pos);
+	for( std::string::iterator it = extension.begin(); it != extension.end(); ++it)
+		*it = tolower( *it);
+
+	if( extension == ".dae")
+		return true;
+
+	return false;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Imports the given file into the given scene structure. 
+void ColladaLoader::InternReadFile( const std::string& pFile, aiScene* pScene, IOSystem* pIOHandler)
+{
+	mFileName = pFile;
+
+	// parse the input file
+	ColladaParser parser( pFile);
+
+	// build the node hierarchy from it
+	pScene->mRootNode = BuildHierarchy( parser, parser.mRootNode);
+
+	pScene->mFlags = AI_SCENE_FLAGS_INCOMPLETE;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Recursively constructs a scene node for the given parser node and returns it.
+aiNode* ColladaLoader::BuildHierarchy( const ColladaParser& pParser, const ColladaParser::Node* pNode)
+{
+	// create a node for it
+	aiNode* node = new aiNode( pNode->mName);
+	
+	// calculate the transformation matrix for it
+	node->mTransformation = pParser.CalculateResultTransform( pNode->mTransforms);
+
+	// add children
+	node->mNumChildren = pNode->mChildren.size();
+	node->mChildren = new aiNode*[node->mNumChildren];
+	for( unsigned int a = 0; a < pNode->mChildren.size(); a++)
+	{
+		node->mChildren[a] = BuildHierarchy( pParser, pNode->mChildren[a]);
+		node->mChildren[a]->mParent = node;
+	}
+
+	return node;
+}