MicroStation CONNECT Edition Help

Trim Surfaces by Curves

(3D only) Used to:

  • Punch a hole in a surface by projecting a cutting profile.
  • Project a B-spline curve onto a surface.

You can access this tool from the following:

  • Ribbon: Modeling > Surfaces > Modify Surfaces > Trim > By Curves
  • Toolbox: Modify Surfaces

Direction Sets the direction of the projection.
  • Orthogonal — Projection is taken normal to the cutting profile.
  • View — Projection is taken normal to the active view.
  • Vector — Direction of projection is determined by two points.
  • Normal to Surface — Projection is taken normal to the plane of the surface being trimmed.
Method Sets the method used to trim the surface.
  • Trim Surface — The region either inside or outside the projected curve is trimmed away. The selected portion of the surface is retained.
  • Split Surface — The surface is divided into two regions, one inside the projected profile and the other outside the projected profile.
  • Project Curve — Projects a B-spline curve on the surface. No boundary is created.
  • Impose Onto — The profile curve is imposed onto the surface as a boundary (that is, a hole is cut into the surface).
Convert to B-spline Surface If on, the resulting element is a B-spline surface.
Keep Profile If on, the profile curve is retained.
Bidirectional If on, the profile curve is projected in both directions.