Changeset 2119 for GTP/trunk/Lib/Vis/OnlineCullingCHC/ObjReader/src/ObjReader.cpp

Timestamp:

02/15/07 14:45:30 (18 years ago)

Author:

mattausch

Message:

 

File:

• GTP/trunk/Lib/Vis/OnlineCullingCHC/ObjReader/src/ObjReader.cpp (modified) (5 diffs)

GTP/trunk/Lib/Vis/OnlineCullingCHC/ObjReader/src/ObjReader.cpp

@@ -3 +3 @@
 #include "Triangle3.h"
 #include "IntersectableWrapper.h"
+#include "BvHierarchy.h"
+#include "Preprocessor.h"
+#include "OgreEntity.h"
+#include "PreprocessorFactory.h"
+#include "OgreLogManager.h"
 
 
-ObjReader::ObjReader()
+
+ObjReader::ObjReader(Ogre::SceneManager *sceneManager):
+mSceneManager(sceneManager)
 {}
 
@@ -13 +20 @@
 
 
-bool ObjReader::LoadFile(const string &filename,
-                                                 GtpVisibilityPreprocessor::ObjectContainer &objects) const
+bool ObjReader::LoadFile(const string &sceneName, 
+                                                 const string &visibilitySolution,
+                                                 Ogre::SceneNode *root)
 {
-        igzstream samplesIn(filename.c_str());
-        
-        if (!samplesIn.is_open())
+        GtpVisibilityPreprocessor::Debug.open("debug.log");
+        // HACK: get any preprocessor to load file
+        GtpVisibilityPreprocessor::Preprocessor *preprocessor = 
+                GtpVisibilityPreprocessor::PreprocessorFactory::CreatePreprocessor("vss");
+
+        // hack
+        preprocessor->mLoadMeshes = false;
+        GtpVisibilityPreprocessor::ObjectContainer pvsObjects;
+
+        Ogre::LogManager::getSingleton().logMessage("loading obj scene!!");
+
+        if (preprocessor->LoadScene(sceneName))
+        {
+                Ogre::LogManager::getSingleton().logMessage("scene loaded, loading objects");
+                // form objects from the scene triangles
+                if (!preprocessor->LoadObjects(visibilitySolution, pvsObjects, preprocessor->mObjects))
+                {
+                        Ogre::LogManager::getSingleton().logMessage("objects cannot be loaded");
+                        return false;
+                }
+        }
+        else
+        {
+                Ogre::LogManager::getSingleton().logMessage("scene cannot be loaded");
                 return false;
-        
-        // read in triangle size
-        int numTriangles;
+        }
 
-        samplesIn.read(reinterpret_cast<char *>(&numTriangles), sizeof(int));
-        objects.reserve(numTriangles);
-        
-        while (1)
-        {
-                GtpVisibilityPreprocessor::Triangle3 tri;
-                
-                samplesIn.read(reinterpret_cast<char *>(tri.mVertices + 0), 
-                                           sizeof(GtpVisibilityPreprocessor::Vector3));
-                samplesIn.read(reinterpret_cast<char *>(tri.mVertices + 1), 
-                                           sizeof(GtpVisibilityPreprocessor::Vector3));
-                samplesIn.read(reinterpret_cast<char *>(tri.mVertices + 2), 
-                                           sizeof(GtpVisibilityPreprocessor::Vector3));
+        std::stringstream d; 
+        d << "successfully loaded " << pvsObjects.size() << " objects";
 
-                // end of file reached
-                if (samplesIn.eof())
-                        break;
+        Ogre::LogManager::getSingleton().logMessage(d.str());
 
-                GtpVisibilityPreprocessor::TriangleIntersectable *obj = 
-                        new GtpVisibilityPreprocessor::TriangleIntersectable(tri);
-                objects.push_back(obj);
+        GtpVisibilityPreprocessor::ObjectContainer::const_iterator oit, oit_end = pvsObjects.end();
+
+        int i = 0;
+        for (oit = pvsObjects.begin(); oit != oit_end; ++ oit, ++ i)
+        {Ogre::LogManager::getSingleton().logMessage("r");
+                const Ogre::String entname = "Object" + i;
+
+                Ogre::Entity *ent = CreateEntity(entname, *oit);
+
+                const Ogre::String nodeName = entname + "/Node";
+                root->createChildSceneNode(nodeName);
         }
-        
-        return true;
+
+        delete preprocessor;
+
+        return false;
 }
 
 
-const std::vector<Ogre::Entity *> &ObjReader::GetObjects() const
-{
-        return mObjects;
-}
-
-
-Ogre::Entity *ObjReader::CreateEntity(const std::string &name)
-//                                                                        ObjMeshData *mData, 
-//                                                                        Ogre::Vector3 *translation)
+Ogre::Entity *ObjReader::CreateEntity(const std::string &name,
+                                                                          GtpVisibilityPreprocessor::Intersectable *object)
 {
         using namespace Ogre;
+        //using namespace GtpVisibilityPreprocessor;
+
         Entity *entity;
 
-        
-        std::string meshName = name.substr(name.find('/',0), name.length()) + "/Mesh";
+        GtpVisibilityPreprocessor::BvhLeaf *bvhObj = 
+                static_cast<GtpVisibilityPreprocessor::BvhLeaf *>(object);
+
+        std::string meshName = name + "/Mesh";
         std::string entityName = name + "/Entity";
 
         MeshPtr mesh = MeshManager::getSingleton().createManual(meshName, "ObjGroup");
         SubMesh* submesh = mesh->createSubMesh();
-int nbVertices = 99992;
+
         // We must create the vertex data, indicating how many vertices there will be
         submesh->useSharedVertices = false;
         submesh->vertexData = new VertexData();
         submesh->vertexData->vertexStart = 0;
-        submesh->vertexData->vertexCount = nbVertices;
+        submesh->vertexData->vertexCount = (int)bvhObj->mObjects.size() * 3;
 
         static const unsigned short source = 0;
@@ -82 +103 @@
         VertexDeclaration* declaration = HardwareBufferManager::getSingleton().createVertexDeclaration();
 
-        offset += declaration->addElement(source,offset,VET_FLOAT3,VES_POSITION).getSize();
+        offset += declaration->addElement(source, offset, VET_FLOAT3,VES_POSITION).getSize();
         //      offset += declaration->addElement(source,offset,VET_FLOAT3,VES_NORMAL).getSize();
         //      offset += declaration->addElement(source,offset,VET_FLOAT2,VES_TEXTURE_COORDINATES).getSize();
@@ -89 +110 @@
         int numVertices = 0;
 
-        HardwareVertexBufferSharedPtr vbuffer = 
-                HardwareBufferManager::getSingleton().createVertexBuffer(declaration->getVertexSize(source), // size of one whole vertex
-                submesh->vertexData->vertexCount, // number of vertices
-                HardwareBuffer::HBU_STATIC_WRITE_ONLY, // usage
-                false); // no shadow buffer
+        HardwareVertexBufferSharedPtr vbuffer = HardwareBufferManager::getSingleton().
+                createVertexBuffer(declaration->getVertexSize(source),
+                                                   submesh->vertexData->vertexCount,
+                                                   HardwareBuffer::HBU_STATIC_WRITE_ONLY,
+                                                   false);
 
-
-        // No we get access to the buffer to fill it.  During so we record the bounding box.
+    // No we get access to the buffer to fill it.  During so we record the bounding box.
         AxisAlignedBox aabox;
 
         float* vdata = static_cast<float*>(vbuffer->lock(HardwareBuffer::HBL_DISCARD));
 
-        for (size_t i = 0; i < nbVertices; ++ i)
+        GtpVisibilityPreprocessor::ObjectContainer::const_iterator oit, oit_end = bvhObj->mObjects.end();
+
+        for (oit = bvhObj->mObjects.begin(); oit != oit_end; ++ oit)
         {
-                // Position
-                Vector3 position;// = 20.0f*positions[i];
-                *vdata++ = position.x;
-                *vdata++ = position.y;
-                *vdata++ = position.z;
-                aabox.merge(position);
-                // Normal
-                Vector3 normal = position.normalisedCopy();
-                *vdata++ = normal.x;
-                *vdata++ = normal.y;
-                *vdata++ = normal.z;
+                GtpVisibilityPreprocessor::TriangleIntersectable *tObj = 
+                        static_cast<GtpVisibilityPreprocessor::TriangleIntersectable *>(*oit);
+                
+                GtpVisibilityPreprocessor::Triangle3 tri = tObj->GetItem();
 
-                // Texture coordinate
-                Vector2 tcoordinate;// = tcoordinates[i];
-                *vdata ++ = tcoordinate.x;
+                for (int i = 0; i < 3; ++ i)
+                {
+                        Vector3 vtx(tri.mVertices[i]);
 
-                *vdata ++ = tcoordinate.y;
+                        *vdata ++ = vtx.x;
+                        *vdata ++ = vtx.y;
+                        *vdata ++ = vtx.z;
 
+                        aabox.merge(vtx);
+                }
         }
 
@@ -126 +145 @@
 
         // We must indicate the bounding box
-        //mesh->_setBounds(aabox); 
+        mesh->_setBounds(aabox); 
 
-        //mesh->_setBoundingSphereRadius((aabox.getMaximum()-aabox.getMinimum()).length()/2.0); 
-
+        mesh->_setBoundingSphereRadius((aabox.getMaximum()-aabox.getMinimum()).length()/2.0); 
         mesh->load();
         
         // Create an entity with the mesh
-        //entity = mSceneManager->createEntity(meshName, entityName);
+        entity = mSceneManager->createEntity(meshName, entityName);
 
         return entity;