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SPAintr Global Function api_silhouette_edges

outcome api_silhouette_edges(	FACE*	`face`,
	const SPAtransf&	`ftrans`,
	const SPAposition&	`from_point`,
	const SPAposition&	`to_point`,
	int	`projection_type`,
	ENTITY_LIST*	`edgelist`,
	AcisOptions*	`ao`	`= NULL`)

Gets a list of silhouette edges for a given face.

Role: This API computes the silhouette curves on the surface of the face and trims them to the boundaries of the face.

The silhouette curves can be calculated for either a parallel or perspective projection.

It retrieves a list of EDGEs representing the bounded portion of the silhouette curves within the face.

Errors: Pointer to face is NULL or not to a FACE.

From and to points are coincident.

Effect: Changes model

Journal: Available

Parameters:

face: face to be examined.
ftrans: transform.
from_point: position ofviewer.
to_point: position toward which the viewer looks.
projection_type: (0 = parallel, 1 = perspective).
edgelist: list of silhouette edges returned.
ao: ACIS options.

This object is included in the file: intrapi.hxx