You can select edge or face to calculate the intersection point or curve.
To open Intersection:
Click Intersection (Geometry Tools toolbar) or click Geometry, Geometry Tools, Intersection .
In the dialog , select the type you want to intersect:
Standard. Select edges, faces into group 1, select other edges, faces into group 2. The shapes in groups 1 will intersect with the shapes in group 2.
Mutual . Select edges, faces into the group, and the shapes intersect with each other in the group.
a. Preview of intersecting. |
b. Intersecting results |
There also provides two options: Relax Tolerance and Untrim Mode. When Relax Tolerance is checked, two unintersected shapes but locate very close can get the intersection. If Untrim Mode is checked, all selected shapes will be untrimmed firstly, and try to get intersection using the untrimmed curve, surface.