Changeset 7626 for OpenSceneGraph/trunk/examples/osgkeyboardmouse/osgkeyboardmouse.cpp

Timestamp:

12/08/07 17:37:05 (5 years ago)

Author:

robert

Message:

From Peter Hrenka, "Due to popular demand I would like to submit this
enhanced version of PolytopeIntersector?.

New features of PolytopeIntersector? :

* Dimension mask: The user may specify the dimensions of the

primitives to be tested. Checking polytope-triangle and
polytope-quad intersections is rather slow so this can
be turned off.

* Reference plane: The resulting intersections are sorted

by the distance to this plane.

New memebers of PolytopeIntersector::Intersection :

* distance: Distance of localIntersectionPoint to the reference plane
* maxDistance: Maximum distance of all intersectionPoints to the

reference plane.

* intersectionPoints: The points intersecting the planes of the polytope

or points completely inside the polytope.

* localIntersectionPoint: arithmetic mean of all intersection points
* primitiveIndex: Index of the primitive that intersected

I added some more output to the example osgkeyboardmouse."

Files:

• OpenSceneGraph/trunk/examples/osgkeyboardmouse/osgkeyboardmouse.cpp (modified) (1 diff)

OpenSceneGraph/trunk/examples/osgkeyboardmouse/osgkeyboardmouse.cpp

@@ -235 +235 @@
             if (picker->containsIntersections())
             {
-                osgUtil::PolytopeIntersector::Intersections& intersections = picker->getIntersections();
-
-                for (osgUtil::PolytopeIntersector::Intersections::iterator it=intersections.begin();
-                     it!=intersections.end(); ++it) {
-                    osgUtil::PolytopeIntersector::Intersection intersection=*it;
-
-                    osg::NodePath& nodePath = intersection.nodePath;
-                    node = (nodePath.size()>=1)?nodePath[nodePath.size()-1]:0;
-                    parent = (nodePath.size()>=2)?dynamic_cast<osg::Group*>(nodePath[nodePath.size()-2]):0;
-
-                    if (node) std::cout<<"  Hits "<<node->className()<<" nodePath size"<<nodePath.size()<<std::endl;
-                    toggleScribe(parent, node);
-                }
-
+                osgUtil::PolytopeIntersector::Intersection intersection = picker->getFirstIntersection();
+
+                osg::notify(osg::NOTICE)<<"Picked "<<intersection.localIntersectionPoint<<std::endl
+                    <<"  Distance to ref. plane "<<intersection.distance
+                    <<", max. dist "<<intersection.maxDistance
+                    <<", primitive index "<<intersection.primitiveIndex
+                    <<", numIntersectionPoints "
+                    <<intersection.numIntersectionPoints
+                    <<std::endl;
+
+                osg::NodePath& nodePath = intersection.nodePath;
+                node = (nodePath.size()>=1)?nodePath[nodePath.size()-1]:0;
+                parent = (nodePath.size()>=2)?dynamic_cast<osg::Group*>(nodePath[nodePath.size()-2]):0;
+
+                if (node) std::cout<<"  Hits "<<node->className()<<" nodePath size "<<nodePath.size()<<std::endl;    
+                toggleScribe(parent, node);
             }