+inline SGVec3d Point3D::toSGVec3d(void) const
+{
+ return SGVec3d(x(), y(), z());
+}
+
+inline SGVec3f Point3D::toSGVec3f(void) const
+{
+ return SGVec3f(x(), y(), z());
+}
+
+inline SGVec2f Point3D::toSGVec2f(void) const
+{
+ return SGVec2f(x(), y());
+}
+