Creates an object containing the silhouette curves and the boundary curves of a NURBS surface object. Curves can be calculated by a parallel or perspective projection. This modelling tool maintains the Construction History.
How to use
1. Click the Silhouette icon or choose the Tools > Curves > Silhouette command.
2. Pick the NURBS surface whose silhouette you want to calculate.
Options
Object
To change the object whose silhouette
you want to calculate.
Views / Modeling Tool panel. Switch the Replace
check button on and pick another NURBS surface in the scene.
Default directions
To set a default direction for the silhouette.
Modeling Tool panel. Switch the chosen radio button on. You have the following options: X, Y, Z local axes, Vertical, and Horizontal. These two options are the up and the right direction of the active view. View dependent should be enabled if you want that Start and End points of the silhouette direction match Position and Look at hotSpots of the active camera.
Start
To change the starting point of the silhouette direction.
Views. Choose the Edit mode. Click the Start hotSpot and drag it. Release the mouse button when you reach the preferred position.
Modeling Tool panel. Type the values in the XYZ data fields and confirm them by pressing Enter.
End
To change the ending point of the silhouette direction.
Views. Choose the Edit mode. Click the Start hotSpot and drag it. Release the mouse button when you reach the preferred position.
Modeling Tool panel. Type the values in the XYZ data fields and confirm them by pressing Enter.
Direction
To change the silhouette computation method.
Modeling Tool panel. Check the Perspective projection check box if you want that the silhouette direction is calculated using a perspective projection view instead of a parallel projection view (default).