Changeset 3511 for OpenSceneGraph/trunk/examples/osgcluster/osgcluster.cpp

Timestamp:

10/19/04 15:52:46 (9 years ago)

Author:

robert

Message:

Move the setting of the camera horizontal field of view to after the realize()
to avoid the CameraGroup?'s Lens be set when its NULL.

Files:

• OpenSceneGraph/trunk/examples/osgcluster/osgcluster.cpp (modified) (2 diffs)

OpenSceneGraph/trunk/examples/osgcluster/osgcluster.cpp

@@ -127 +127 @@
     while (arguments.read("-n",socketNumber)) ;
 
-    float camera_fov=45.0f;
+    float camera_fov=-1.0f;
     while (arguments.read("-f",camera_fov)) 
     {
-        std::cout << "setting lens perspective : original "<<viewer.getLensHorizontalFov()<<"  "<<viewer.getLensVerticalFov()<<std::endl;
-        viewer.setLensPerspective(camera_fov,camera_fov*viewer.getLensVerticalFov()/viewer.getLensHorizontalFov(),1.0f,1000.0f);
-        std::cout << "setting lens perspective : new "<<viewer.getLensHorizontalFov()<<"  "<<viewer.getLensVerticalFov()<<std::endl;
     }
 
@@ -172 +169 @@
     // create the windows and run the threads.
     viewer.realize();
+
+
+    // set up the lens after realize as the Producer lens is not set up properly before this.... will need to inveestigate this at a later date.
+    if (camera_fov>0.0f)
+    {
+        float aspectRatio = tan( osg::DegreesToRadians(viewer.getLensVerticalFov()*0.5)) / tan(osg::DegreesToRadians(viewer.getLensHorizontalFov()*0.5));
+        float new_fovy = osg::RadiansToDegrees(atan( aspectRatio * tan( osg::DegreesToRadians(camera_fov*0.5))))*2.0f;
+        std::cout << "setting lens perspective : original "<<viewer.getLensHorizontalFov()<<"  "<<viewer.getLensVerticalFov()<<std::endl;
+        viewer.setLensPerspective(camera_fov,new_fovy,1.0f,1000.0f);
+        std::cout << "setting lens perspective : new "<<viewer.getLensHorizontalFov()<<"  "<<viewer.getLensVerticalFov()<<std::endl;
+    }
+
 
     // objects for managing the broadcasting and recieving of camera packets.