Introduced CMake build option for compiling double or float versions of osg::BoundingSphere and osg::BoundingBox.

Introduced code in BoundgingSphere, BoundingBox, ProxyNode and LOD to utilise the above settings.

Added Matrix::value_type, Plane::value_type, BoundingSphere::value_type and BoundingBox::value_type command line 
options that report where the types of floats or doubles.

src/osg/BoundingSphere.cpp

@@ -15,15 +15,15 @@
 
 using namespace osg;
 
-void BoundingSphere::expandBy(const Vec3& v)
+void BoundingSphere::expandBy(const Vec3f& v)
 {
     if (valid())
     {
-        Vec3 dv = v-_center;
-        float r = dv.length();
+        vec_type dv = v-_center;
+        value_type r = dv.length();
         if (r>_radius)
         {
-            float dr = (r-_radius)*0.5f;
+            value_type dr = (r-_radius)*0.5;
             _center += dv*(dr/r);
             _radius += dr;
         } // else do nothing as vertex is within sphere.
@@ -31,27 +31,66 @@ void BoundingSphere::expandBy(const Vec3& v)
     else
     {
         _center = v;
-        _radius = 0.0f;
+        _radius = 0.0;
     }
 }
 
 
-void BoundingSphere::expandRadiusBy(const Vec3& v)
+void BoundingSphere::expandRadiusBy(const Vec3f& v)
 {
     if (valid())
     {
-        float r = (v-_center).length();
+        value_type r = (v-_center).length();
         if (r>_radius) _radius = r;
         // else do nothing as vertex is within sphere.
     }
     else
     {
         _center = v;
-        _radius = 0.0f;
+        _radius = 0.0;
     }
 }
 
 
+
+void BoundingSphere::expandBy(const Vec3d& v)
+{
+    if (valid())
+    {
+        vec_type dv = v-_center;
+        value_type r = dv.length();
+        if (r>_radius)
+        {
+            value_type dr = (r-_radius)*0.5;
+            _center += dv*(dr/r);
+            _radius += dr;
+        } // else do nothing as vertex is within sphere.
+    }
+    else
+    {
+        _center = v;
+        _radius = 0.0;
+    }
+}
+
+
+void BoundingSphere::expandRadiusBy(const Vec3d& v)
+{
+    if (valid())
+    {
+        value_type r = (v-_center).length();
+        if (r>_radius) _radius = r;
+        // else do nothing as vertex is within sphere.
+    }
+    else
+    {
+        _center = v;
+        _radius = 0.0;
+    }
+}
+
+
+
 void BoundingSphere::expandBy(const BoundingSphere& sh)
 {
 
@@ -107,7 +146,7 @@ void BoundingSphere::expandRadiusBy(const BoundingSphere& sh)
     {
         if (valid())
         {
-            float r = (sh._center-_center).length()+sh._radius;
+            value_type r = (sh._center-_center).length()+sh._radius;
             if (r>_radius) _radius = r;
             // else do nothing as vertex is within sphere.
         }

src/osgGA/NodeTrackerManipulator.cpp

@@ -105,7 +105,7 @@ void NodeTrackerManipulator::setNode(osg::Node* node)
         const osg::BoundingSphere& boundingSphere=_node->getBound();
         const float minimumDistanceScale = 0.001f;
         _minimumDistance = osg::clampBetween(
-            boundingSphere._radius * minimumDistanceScale,
+            float(boundingSphere._radius) * minimumDistanceScale,
             0.00001f,1.0f);
             
         osg::notify(osg::INFO)<<"Setting Tracker manipulator _minimumDistance to "<<_minimumDistance<<std::endl;

src/osgGA/TerrainManipulator.cpp

@@ -51,7 +51,7 @@ void TerrainManipulator::setNode(osg::Node* node)
         const osg::BoundingSphere& boundingSphere=_node->getBound();
         const float minimumDistanceScale = 0.001f;
         _minimumDistance = osg::clampBetween(
-            boundingSphere._radius * minimumDistanceScale,
+            float(boundingSphere._radius) * minimumDistanceScale,
             0.00001f,1.0f);
 
         osg::notify(osg::INFO)<<"Setting terrain manipulator _minimumDistance to "<<_minimumDistance<<std::endl;

src/osgPlugins/Inventor/ConvertToInventor.cpp

@@ -1994,7 +1994,8 @@ void ConvertToInventor::apply(osg::LOD& node)
        lod->range.set1Value(i, node.getMaxRange(i));
 
     // set center
-    lod->center.setValue(node.getCenter().ptr());
+    osg::Vec3f center(node.getCenter());
+    lod->center.setValue(center.ptr());
 
     ivLOD = lod;