Changeset 5675 for OpenSceneGraph/trunk/examples/osgintersection/osgintersection.cpp

Timestamp:

10/31/06 13:59:51 (7 years ago)

Author:

robert

Message:

Implemented HeightAboveTerrain? and added usage into osgintersection

Files:

• OpenSceneGraph/trunk/examples/osgintersection/osgintersection.cpp (modified) (8 diffs)

OpenSceneGraph/trunk/examples/osgintersection/osgintersection.cpp

@@ -2 +2 @@
 #include <osg/ApplicationUsage>
 #include <osg/Timer>
+#include <osg/CoordinateSystemNode>
 #include <osg/Notify>
 #include <osg/io_utils>
@@ -10 +11 @@
 
 #include <osgSim/LineOfSight>
+#include <osgSim/HeightAboveTerrain>
 
 #include <iostream>
@@ -32 +34 @@
     arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");
     
-    osg::ref_ptr<osg::Node> root = osgDB::readNodeFiles(arguments);
-    
-    if (!root) 
+    osg::ref_ptr<osg::Node> scene = osgDB::readNodeFiles(arguments);
+    
+    if (!scene) 
     {
         std::cout<<"No model loaded, please specify a valid model on the command line."<<std::endl;
@@ -43 +45 @@
 
     
-    
-    osg::BoundingSphere bs = root->getBound();
+    osg::CoordinateSystemNode* csn = dynamic_cast<osg::CoordinateSystemNode*>(scene.get());
+    osg::EllipsoidModel* em = csn ? csn->getEllipsoidModel() : 0;
+    
+    osg::BoundingSphere bs = scene->getBound();
 
 
@@ -51 +55 @@
     
     if (useLineOfSight)
-    {
-        osg::Timer_t startTick = osg::Timer::instance()->tick();
-    
-        osg::Vec3d start = bs.center() + osg::Vec3d(0.0,bs.radius(),0.0);
-        osg::Vec3d end = bs.center();// - osg::Vec3d(0.0, bs.radius(),0.0);
-        osg::Vec3d deltaRow( 0.0, 0.0, bs.radius()*0.01);
-        osg::Vec3d deltaColumn( bs.radius()*0.01, 0.0, 0.0);
-        unsigned int numRows = 50;
-        unsigned int numColumns = 50;
-
-        osgSim::LineOfSight los;
-
-        for(unsigned int r=0; r<numRows; ++r)
-        {
-            for(unsigned int c=0; c<numColumns; ++c)
-            {
-                osg::Vec3d s = start + deltaColumn * double(c) + deltaRow * double(r);
-                osg::Vec3d e = end + deltaColumn * double(c) + deltaRow * double(r);
-                los.addLOS(s,e);
-            }
-        }
-
-
-        los.computeIntersections(root.get());
-        
-        osg::Timer_t endTick = osg::Timer::instance()->tick();
-
-        std::cout<<"Completed in "<<osg::Timer::instance()->delta_s(startTick,endTick)<<std::endl;
-
-#if 0
-        for(unsigned int i=0; i<los.getNumLOS(); i++)
-        {
-            const osgSim::LineOfSight::Intersections& intersections = los.getIntersections(i);
-            for(osgSim::LineOfSight::Intersections::const_iterator itr = intersections.begin();
-                itr != intersections.end();
-                ++itr)
-            {
-                 std::cout<<"  point "<<*itr<<std::endl;
-            }
-        }
-#endif
-
-        // now do a second traversal to test performance of cache.
-        startTick = osg::Timer::instance()->tick();
-
-        los.computeIntersections(root.get());
-        
-        endTick = osg::Timer::instance()->tick();
-
-        std::cout<<"Completed in "<<osg::Timer::instance()->delta_s(startTick,endTick)<<std::endl;
-
-    }
-    else if (useIntersectorGroup)
     {
         osg::Timer_t startTick = osg::Timer::instance()->tick();
@@ -114 +65 @@
         unsigned int numColumns = 20;
 
+        osgSim::LineOfSight los;
+        
+        osgSim::HeightAboveTerrain hat;
+        hat.setDatabaseCacheReadCallback(los.getDatabaseCacheReadCallback());
+
+        for(unsigned int r=0; r<numRows; ++r)
+        {
+            for(unsigned int c=0; c<numColumns; ++c)
+            {
+                osg::Vec3d s = start + deltaColumn * double(c) + deltaRow * double(r);
+                osg::Vec3d e = end + deltaColumn * double(c) + deltaRow * double(r);
+                los.addLOS(s,e);
+                hat.addPoint(s);
+            }
+        }
+
+
+        std::cout<<"Computing LineOfSight"<<std::endl;
+
+        los.computeIntersections(scene.get());
+        
+        osg::Timer_t endTick = osg::Timer::instance()->tick();
+
+        std::cout<<"Completed in "<<osg::Timer::instance()->delta_s(startTick,endTick)<<std::endl;
+
+#if 1
+        for(unsigned int i=0; i<los.getNumLOS(); i++)
+        {
+            const osgSim::LineOfSight::Intersections& intersections = los.getIntersections(i);
+            for(osgSim::LineOfSight::Intersections::const_iterator itr = intersections.begin();
+                itr != intersections.end();
+                ++itr)
+            {
+                 std::cout<<"  point "<<*itr<<std::endl;
+            }
+        }
+#endif
+
+        // now do a second traversal to test performance of cache.
+        startTick = osg::Timer::instance()->tick();
+
+        std::cout<<"Computing HeightAboveTerrain"<<std::endl;
+
+        hat.computeIntersections(scene.get());
+        
+        for(unsigned int i=0; i<hat.getNumPoints(); i++)
+        {
+             std::cout<<"  point = "<<hat.getPoint(i)<<" hat = "<<hat.getHeightAboveTerrain(i)<<std::endl;
+        }
+
+        endTick = osg::Timer::instance()->tick();
+
+        std::cout<<"Completed in "<<osg::Timer::instance()->delta_s(startTick,endTick)<<std::endl;
+
+    }
+    else if (useIntersectorGroup)
+    {
+        osg::Timer_t startTick = osg::Timer::instance()->tick();
+    
+        osg::Vec3d start = bs.center() + osg::Vec3d(0.0,bs.radius(),0.0);
+        osg::Vec3d end = bs.center();// - osg::Vec3d(0.0, bs.radius(),0.0);
+        osg::Vec3d deltaRow( 0.0, 0.0, bs.radius()*0.01);
+        osg::Vec3d deltaColumn( bs.radius()*0.01, 0.0, 0.0);
+        unsigned int numRows = 20;
+        unsigned int numColumns = 20;
+
         osg::ref_ptr<osgUtil::IntersectorGroup> intersectorGroup = new osgUtil::IntersectorGroup();
 
@@ -129 +146 @@
         
         osgUtil::IntersectionVisitor intersectVisitor( intersectorGroup.get(), new MyReadCallback );
-        root->accept(intersectVisitor);
+        scene->accept(intersectVisitor);
 
         osg::Timer_t endTick = osg::Timer::instance()->tick();
@@ -182 +199 @@
         osgUtil::IntersectionVisitor intersectVisitor( intersector.get(), new MyReadCallback );
 
-        root->accept(intersectVisitor);
+        scene->accept(intersectVisitor);
 
         osg::Timer_t endTick = osg::Timer::instance()->tick();