In the default mode, Inventor computes the intersection of the pick ray with geometry nodes (face, line, point, volume, mesh, etc).

OIV.Inventor.SoPickedPoint.GetPoint() returns the coordinate of the intersection and OIV.Inventor.SoPickedPoint.GetDetail(OIV.Inventor.Nodes.SoNode) returns (usually) an OIV.Inventor.Details.SoDetail class specific to the picked geometry.

In this mode, Inventor finds all the vertices inside the pick radius.

However this is only supported for OIV.Inventor.Nodes.SoBufferedShape and classes derived from OIV.Inventor.Nodes.SoIndexedShape. This mode can be much faster because, for example, it does not need to check for intersection with the triangles of an OIV.Inventor.Nodes.SoIndexedFaceSet. For pick radius see OIV.Inventor.Actions.SoRayPickAction.SetRadius(System.Single). Specific different behaviors include:

• If no vertex is inside the pick radius, no picked point is returned.

• If a vertex is inside the pick radius, SoPickedPoint->OIV.Inventor.Actions.SoRayPickAction.GetPoint() returns the coordinate of the vertex, not the intersection with the geometry.

• SoPickedPoint->getNormal() returns 0,0,0

• SoPickedPoint->getTextureCoords() returns 0,0,0,0

• SoPickedPoint->getDetail normally returns an OIV.Inventor.Details.SoPointDetail instead of an OIV.Inventor.Details.SoFaceDetail (or whatever would normally be returned for that geometry).