Inital work on an Ogre Exporter

andrewfenn · Apr 16, 2012 · ebdb6f9 · ebdb6f9
1 parent 5975f3e
commit ebdb6f9
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diff --git a/code/CMakeLists.txt b/code/CMakeLists.txt
@@ -332,6 +332,9 @@ SET( Ogre_SRCS
 	OgreMaterial.cpp
 	OgreMesh.cpp
 	OgreSkeleton.cpp
+
+	OgreExporter.h
+	OgreExporter.cpp
 )
 SOURCE_GROUP( Ogre FILES ${Ogre_SRCS})
 

diff --git a/code/Exporter.cpp b/code/Exporter.cpp
@@ -74,6 +74,7 @@ void ExportSceneCollada(const char*,IOSystem*, const aiScene*);
 void ExportSceneObj(const char*,IOSystem*, const aiScene*);
 void ExportSceneSTL(const char*,IOSystem*, const aiScene*);
 void ExportScenePly(const char*,IOSystem*, const aiScene*);
+void ExportSceneOgre(const char*,IOSystem*, const aiScene*);
 void ExportScene3DS(const char*, IOSystem*, const aiScene*) {}
 
 // ------------------------------------------------------------------------------------------------
@@ -94,6 +95,12 @@ Exporter::ExportFormatEntry gExporters[] =
 	),
 #endif
 
+#ifndef ASSIMP_BUILD_NO_OGRE_EXPORTER
+	Exporter::ExportFormatEntry( "ogre", "OGRE 3D XML", "meshxml" , &ExportSceneOgre,
+		aiProcess_PreTransformVertices
+	),
+#endif
+
 #ifndef ASSIMP_BUILD_NO_PLY_EXPORTER
 	Exporter::ExportFormatEntry( "ply", "Stanford Polygon Library", "ply" , &ExportScenePly, 
 		aiProcess_PreTransformVertices

diff --git a/code/OgreExporter.cpp b/code/OgreExporter.cpp
@@ -0,0 +1,137 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2012, assimp 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 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"
+
+#if !defined(ASSIMP_BUILD_NO_EXPORT) && !defined(ASSIMP_BUILD_NO_OGRE_EXPORTER)
+
+#include "OgreExporter.h"
+#include "../include/assimp/version.h"
+
+using namespace Assimp;
+namespace Assimp	{
+
+// ------------------------------------------------------------------------------------------------
+// Worker function for exporting a scene to Ogre xml. Prototyped and registered in Exporter.cpp
+void ExportSceneOgre(const char* pFile,IOSystem* pIOSystem, const aiScene* pScene)
+{
+	// invoke the exporter 
+	OgreExporter exporter(pFile, pScene);
+
+	// we're still here - export successfully completed. Write the file.
+	boost::scoped_ptr<IOStream> outfile (pIOSystem->Open(pFile,"wt"));
+	outfile->Write( exporter.mOutput.str().c_str(), static_cast<size_t>(exporter.mOutput.tellp()),1);
+}
+
+} // end of namespace Assimp
+
+
+// ------------------------------------------------------------------------------------------------
+OgreExporter :: OgreExporter(const char* _filename, const aiScene* pScene)
+: filename(_filename)
+, pScene(pScene)
+, endl("\n") 
+{
+	// make sure that all formatting happens using the standard, C locale and not the user's current locale
+	const std::locale& l = std::locale("C");
+	mOutput.imbue(l);
+
+    mOutput << "<mesh>" << endl;
+    mOutput << "\t<submeshes>" << endl;
+	for(unsigned int i = 0; i < pScene->mNumMeshes; ++i) {
+		WriteMesh(pScene->mMeshes[i]);
+	}
+    mOutput << "\t</submeshes>";
+    mOutput << "</mesh>" << endl;
+}
+
+// ------------------------------------------------------------------------------------------------
+void OgreExporter :: WriteMesh(const aiMesh* m, const aiScene* p)
+{
+
+    switch (m->mNumFaces)
+    {
+        case 1:
+
+    }
+
+    mOutput << "\t\t<submesh material=\"\" usesharedvertices=\"true\" use32bitindexes=\"false\" operationtype=\"triangle_list\">" << endl;
+
+    // Vertice Indices
+
+    mOutput << "\t\t\t<faces count=\"" << m->mNumFaces << "\">" << endl;   
+	for (unsigned int i = 0; i < m->mNumFaces; ++i) {
+		const aiFace& f = m->mFaces[i];
+
+		mOutput << "\t\t\t\t<face ";
+		for(unsigned int a = 0; a < f.mNumIndices; ++a) {
+		    mOutput << "v"<< a+1 <<"=\"" << f.mIndices[a] << "\" ";
+	    }
+	    mOutput << "/>" << endl;
+    }
+    mOutput << "\t\t\t</faces>" << endl;
+
+    // Vertex data
+
+    mOutput << "\t\t\t<geometry vertexcount=\"" << m->mNumVertices << "\">" << endl;
+	for (unsigned int i = 0; i < m->mNumFaces; ++i) {
+                <vertexbuffer positions="true" normals="true" texture_coord_dimensions_0="float2" texture_coords="1">
+                    <vertex>
+                        <position x="-0.146724" y="-0.159533" z="-0.140746" />
+                        <normal x="-0.981293" y="-0.191754" z="0.017182" />
+                        <texcoord u="0.121712" v="0.87139" />
+                    </vertex>
+    }
+
+
+/*		mOutput << "  outer loop" << endl; 
+		for(unsigned int a = 0; a < f.mNumIndices; ++a) {
+			const aiVector3D& v  = m->mVertices[f.mIndices[a]];
+			mOutput << "  vertex " << v.x << " " << v.y << " " << v.z << endl;
+		}
+
+		mOutput << "  endloop" << endl; 
+		mOutput << " endfacet" << endl << endl; 
+	}*/
+
+    mOutput << "\t\t</submesh>" << endl;
+}
+
+#endif
diff --git a/code/OgreExporter.h b/code/OgreExporter.h
@@ -0,0 +1,84 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2012, assimp 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 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.
+
+----------------------------------------------------------------------
+*/
+
+/** @file OGREExporter.h
+ * Declares the exporter class to write a scene to an Ogre XML file
+ */
+#ifndef AI_OGREEXPORTER_H_INC
+#define AI_OGREEXPORTER_H_INC
+
+#include <sstream>
+
+struct aiScene;
+struct aiNode;
+
+namespace Assimp	
+{
+
+// ------------------------------------------------------------------------------------------------
+/** Helper class to export a given scene to a Ogre XML file. */
+// ------------------------------------------------------------------------------------------------
+class OgreExporter
+{
+public:
+	/// Constructor for a specific scene to export
+	OgreExporter(const char* filename, const aiScene* pScene);
+
+public:
+
+	/// public stringstreams to write all output into
+	std::ostringstream mOutput;
+
+private:
+
+	void WriteMesh(const aiMesh* m, const aiScene* p);
+
+private:
+
+	const std::string filename;
+	const aiScene* const pScene;
+
+	// this endl() doesn't flush() the stream
+	const std::string endl;
+};
+
+}
+
+#endif