Changeset 1285 for GTP/trunk/App/Demos/Vis/KdTreeDemo

Timestamp:

08/25/06 17:44:02 (18 years ago)

Author:

szydlowski

Message:

saving and loading entities to file

Location:

GTP/trunk/App/Demos/Vis/KdTreeDemo

Files:

• OGRE/include/TestKdTree.h (modified) (2 diffs)
• OGRE/include/TestKdTreeAppListener.h (modified) (4 diffs)
• OGRE/src/TestKdTree.cpp (modified) (10 diffs)
• OGRE/src/TestKdTreeAppListener.cpp (modified) (2 diffs)
• README.txt (modified) (3 diffs)

GTP/trunk/App/Demos/Vis/KdTreeDemo/OGRE/include/TestKdTree.h

@@ -46 +46 @@
         }
 
+        // save entities to ascii file
+        bool saveSceneASCII(const String& filename, SceneNode *entityroot);
 protected:
         KdTreeAppListener *mFrameListener;
@@ -84 +86 @@
         bool loadScene(const String& filename);
         bool loadSceneIV(const String &filename, SceneNode *root, const int index);
+        // loadding world geometry from cfg file - for terrain
+        bool loadSceneCfg(const String &filename, SceneNode *root, const int index);
+        // load entities from ascii file
+        bool loadSceneASCII(const String &filename, SceneNode *root, const int index);
+
+        typedef std::list<SceneNode *> NodeList;
+        void addNodesToList(SceneNode* node, NodeList& list);
 
         void createMaterials(void);

GTP/trunk/App/Demos/Vis/KdTreeDemo/OGRE/include/TestKdTreeAppListener.h

@@ -66 +66 @@
 typedef std::list<FrameInfo> FrameList;
 
+class KdTreeApp;
+
 class KdTreeAppListener: public FrameListener, public KeyListener
 {
@@ -120 +122 @@
                 mDemoMode(false),
                 mEnhancedVisibility(false),
-                mDemoInterval(1.0f)
+                mDemoInterval(1.0f),
+                myApp(0)
                 {
 
@@ -126 +129 @@
 
                 String mSceneFiles;
+                String mSceneOutfileName;
                 String mDemoInfileName;
                 String mDemoOutfileName;
@@ -142 +146 @@
                 bool mEnhancedVisibility;
                 Real mDemoInterval;
+                KdTreeApp *myApp;
         };
 

GTP/trunk/App/Demos/Vis/KdTreeDemo/OGRE/src/TestKdTree.cpp

@@ -6 +6 @@
 #include "TestKdTree.h"
 #include "WinCmdLineParser.h"
+#include <cstring>
 
 #ifdef __cplusplus
@@ -37 +38 @@
                                 .addOpt("s","scenemgr", ARGUMENT_REQUIRED)
                                 .addOpt("","comment", ARGUMENT_REQUIRED)
-                                .addOpt("e","enhancevis", ARGUMENT_NONE);
+                                .addOpt("e","enhancevis", ARGUMENT_NONE)
+                                .addOpt("","savesceneto", ARGUMENT_REQUIRED);
 
 
@@ -46 +48 @@
                         options.mDemoMode = cmdparser.getOpt("d");
                         options.mEnhancedVisibility = cmdparser.getOpt("e");
+                        cmdparser.getOpt("savesceneto", options.mSceneOutfileName);
 
                         std::string tmp;
@@ -302 +305 @@
                 mCamNode->setPosition(707,2500,528);
                 mCamNode->setOrientation(Quaternion(-0.3486, 0.0122, 0.9365, 0.0329));
-                //mCamNode->setPosition(0,0,0);
-                //mCamNode->setOrientation(Quaternion(Radian(Math::PI),Vector3::UNIT_Y));
+                //mCamNode->setPosition(1056.59, 467.412, 783.502);
+                //mCamNode->setOrientation(Quaternion(-0.281354, 0.0204027, 0.956747, 0.0695345));
         }
         // load scene from file
@@ -310 +313 @@
                 // don't load the other stuff
                 loadScene(mOptions.mSceneFiles);
+
                 // top view
                 mTopCam->setPosition(Vector3(1232, 3990, -1477));
@@ -531 +535 @@
 void KdTreeApp::createFrameListener(void)
 {
+        // set pointer to self in options
+        mOptions.myApp = this;
+
         mFrameListener = new KdTreeAppListener(mWindow, mSceneMgr, mOptions);
         //mFrameListener->showDebugOverlay( true );
@@ -760 +767 @@
         LogManager::getSingleton().logMessage(d.str());
 
-        bool result = false;
+        bool loadres = false;
+        bool result = filenames.empty() ? false : true;
+
         std::vector<std::string>::const_iterator fit, fit_end = filenames.end();
         int i = 0;
@@ -770 +779 @@
                 if (strstr(fn.c_str(), ".iv") || strstr(fn.c_str(), ".wrl"))
                 {
-                        // hack: set postion manually for vienna
-                        //mCamNode->setPosition(Vector3(830, 300, -540));
-                        //mCamNode->setOrientation(Quaternion(-0.3486, 0.0122, 0.9365, 0.0329));
-
                         // load iv files
-                        loadSceneIV(fn, mSceneMgr->getRootSceneNode(), i);                      
-                }
-
-                result = true;
-        }
-
-
-        /*
-        if (result) 
-        {
-        int intersectables, faces;
-
-        std::stringstream d;
-        d << filename << " parsed successfully.\n"
-        << "#NUM_OBJECTS (Total numner of objects)\n" << intersectables << "\n"
-        << "#NUM_FACES (Total numner of faces)\n" << faces << "\n";
-        }
-        */
+                        loadres = loadSceneIV(fn, mSceneMgr->getRootSceneNode(), i);                    
+                }
+                else if (strstr(fn.c_str(), ".cfg"))
+                {
+                        // load terrain from cfg
+                        loadres = loadSceneCfg(fn, mSceneMgr->getRootSceneNode(), i);
+                }
+                else if (strstr(fn.c_str(), ".txt"))
+                {
+                        // load entities form text file
+                        loadres = loadSceneASCII(fn, mSceneMgr->getRootSceneNode(), i);
+                }
+                else
+                {
+                        loadres = false;
+                }
+
+                // result is true only if all files have been succesfully loaded
+                result = result ? loadres : false;
+        }
 
         return result;
@@ -802 +809 @@
         IVReader * mIVReader = new IVReader();
 
-        if (1)
+        if (0)
         {
                 String logFilename = "IVLog" + Ogre::StringConverter().toString(index) + ".log";
@@ -823 +830 @@
                 return true;
         }
-
-        return false;
-}
+        else
+        {
+                OGRE_DELETE(mIVReader);
+
+                return false;
+        }
+}
+
+//-----------------------------------------------------------------------
+bool KdTreeApp::loadSceneCfg(const String &filename, SceneNode *root, const int index)
+{
+        // Set ambient light
+        mSceneMgr->setAmbientLight(ColourValue(0.5, 0.5, 0.5));
+        // Create a light
+        Light* l = mSceneMgr->createLight("MainLight");
+        l->setPosition(20,80,50);
+        
+        // try to load world geometry defined in the cfg file
+        mSceneMgr -> setWorldGeometry( filename );
+
+        // return true since we have no feedback from setWorldGeometry
+        return true;
+}
+
+#define MAX_BUF_SIZE 1024
+
+//-----------------------------------------------------------------------
+bool KdTreeApp::loadSceneASCII(const String &filename, SceneNode *root, const int index)
+{
+        typedef std::map<std::string, std::string> EntMeshMap;
+        typedef std::vector<std::string> Line;
+        
+        std::ifstream read;
+        read.open(filename.c_str());
+        if (read.is_open())
+        {
+                char buf[MAX_BUF_SIZE];
+                Line line;
+                std::stringstream s;
+                std::string node, ent, mesh;
+                Vector3 pos;
+                Quaternion or;
+                Vector3 scale;
+                int count;
+                EntMeshMap emm;
+
+                // the node which is parent to all entities
+                SceneNode *anchor = mSceneMgr->getRootSceneNode()->createChildSceneNode("AnchorNode");
+
+                while (!read.eof())
+                {
+                        line.clear();
+                        memset(buf, 0, MAX_BUF_SIZE);
+                        read.getline(buf, MAX_BUF_SIZE);
+                        splitFilenames(std::string(buf), line);
+                        if (line.size() < 5)
+                                continue;
+                        // see if node not empty
+                        s << line[4];
+                        s >> count;
+                        s.clear();
+                        if (count > 0)
+                        {
+                                // read info
+                                node = line[0];
+                                s << line[1];
+                                s >> pos.x >> pos.y >> pos.z;
+                                s.clear();
+                                s << line[2];
+                                s >> or.x >> or.y >> or.z >> or.w;
+                                s.clear();
+                                s << line[3];
+                                s >> scale.x >> scale.y >> scale.z;
+                                s.clear();
+                                for (int i = 5; i < 5 + count; i ++)
+                                {
+                                        s << line[i];
+                                        s >> ent >> mesh;
+                                        s.clear();
+                                        emm[ent] = mesh;
+                                }
+                                // build node
+                                SceneNode *newnode = anchor->createChildSceneNode(node, pos, or);
+                                newnode->setScale(scale);
+                                for (EntMeshMap::iterator emmit = emm.begin(); emmit != emm.end(); emmit ++)
+                                {
+                                        Entity * entity = mSceneMgr->createEntity(emmit->first, emmit->second);
+                                        newnode->attachObject(entity);
+                                }
+                                emm.clear();
+                        }
+
+
+                }
+
+                return true;
+        }
+        else
+        {
+                return false;
+        }
+}
+
+//-----------------------------------------------------------------------
+bool KdTreeApp::saveSceneASCII(const String& filename, SceneNode *entityroot)
+{
+        // find all entities under node entityroot and store their name, position
+        //and orientation to a test file
+        std::ofstream write;
+        write.open(filename.c_str());
+        if (write.is_open())
+        {
+                NodeList list;
+                addNodesToList(entityroot, list);
+
+                std::string fs = ";", rs = "\n";
+                std::string entnames;
+                int entcount;
+
+                for (NodeList::iterator it = list.begin(); it != list.end(); it ++)
+                {
+                        // fist dump info about node (name, position, orientation, scale)
+                        SceneNode * node = *it;
+                        write << node->getName() << fs << 
+                                StringConverter::toString(node->getPosition()) << fs <<
+                                StringConverter::toString(node->getOrientation()) << fs <<
+                                StringConverter::toString(node->getScale()) << fs;
+
+                        entcount = 0;
+                        entnames = "";
+
+                        SceneNode::ObjectIterator objIt = node->getAttachedObjectIterator();
+
+                        while (objIt.hasMoreElements())
+                        {
+                                MovableObject *movable = objIt.getNext();
+                                if (movable->getMovableType() == "Entity")
+                                {
+                                        Entity *ent = static_cast<Entity *>(movable);
+                                        entcount++;
+                                        entnames += fs + ent->getName() + " " + ent->getMesh()->getName();
+
+                                }
+                        }
+
+                        // now dump entity count and names
+                        write << entcount << entnames << rs;
+                }
+
+                write.close();
+                return true;
+        }
+        else
+        {
+                return false;
+        }
+
+}
+
+void KdTreeApp::addNodesToList(SceneNode* node, NodeList& list)
+{
+        //// check if node has entities
+        //bool entfound = false;
+
+        //SceneNode::ObjectIterator objIt = node->getAttachedObjectIterator();
+        //while (objIt.hasMoreElements())
+        //{
+        //      MovableObject *movable = objIt.getNext();
+        //      if (movable->getMovableType() == "Entity")
+        //              entfound = true;
+        //}
+
+        //// if yes, add to list
+        //if (entfound)
+        list.push_back(node);
+
+        // check if node has children and add them to list
+        SceneNode::ChildNodeIterator childIt = node->getChildIterator();
+        while (childIt.hasMoreElements())
+        {
+                SceneNode *child = static_cast<SceneNode *>(childIt.getNext());
+                addNodesToList(child, list);
+        }
+}
+
 
 /**********************************************************************/

GTP/trunk/App/Demos/Vis/KdTreeDemo/OGRE/src/TestKdTreeAppListener.cpp

@@ -4 +4 @@
 #include <OgrePanelOverlayElement.h>
 #include "TestKdTreeAppListener.h"
+#include "TestKdTree.h"
 #include <windows.h>
 
@@ -543 +544 @@
         }
 
+        if (mInputDevice->isKeyDown(KC_F7) && mTimeUntilNextToggle <= 0)
+        {
+                SceneNode *entnode = mSceneMgr->getSceneNode("AnchorNode");
+                if (!mOptions.myApp->saveSceneASCII(mOptions.mSceneOutfileName, entnode))
+                        LogManager::getSingleton().logMessage(
+                        "##Error##: Failed to save scene to " + mOptions.mSceneOutfileName);
+                mTimeUntilNextToggle = 0.5;
+        }
+
         if (mInputDevice->isKeyDown(KC_F9) && mTimeUntilNextToggle <= 0)
         {

GTP/trunk/App/Demos/Vis/KdTreeDemo/README.txt

@@ -48 +48 @@
     Append a comment to the logfile. Requires --logfile to have any effect.
     (see DEMOS).
+    
+  --savesceneto <filename>
+        Specifies file name (with .txt extension) to which the positions of all
+        entities in the scene will be saved. If the filename is appended to
+        the scene parameter in the config file, the entities are loaded at
+        startup
 
   The following options apply only to the KDT and KTE scene managers. They have
@@ -88 +94 @@
     scene:  Select the scene which shall be loaded.
             If the parameter is empty or missing, the simple test scene is
-            loaded (spaceships & robots).
-            If the parameter is "terrain", the application attempts to load
-            the terrain world geometry, which only works with scene managers
-            supporting this kind of geometry (KTE, OCM, TER). Also a file
-            named "terrain.cfg" and holding all the necessary options for
-            the terrain must be in the same directory.
-            All other values are interpreted as a semicolon-separated list of
-            scene files to load. For now, only the .iv format is supported.
+            loaded (spaceships & robots on a plane).
+            Otherwise the parameter is interpreted as a semicolon-separated
+            list of scene files to load. So far the application supports the
+            following formats:
+                .iv, .wrl:      Mesh files like the vienna scene.
+                .cfg:                           Config files for terrain creation. You need to specify
+                                                                an appropriate scene manager which supports terrain
+                                                                world geometry rendering (KTE, OCM, TER).
+                .txt:                           Text file created by the application which store
+                                                                positions of entites (small movable objects)
     movespeed, rotatespeed:
             Set the speed of movement and rotation for the player camera.
@@ -174 +182 @@
     P     Show/Hide player cam position
     PRINT Save sceen shot
+    F7          Save Entities in the scene to file
 
 DEMOS