
This task shows how to intersect a face and the sketch
plane. 

Open the
Intersection_Canonic.CATPart document. 


Select the face of interest.

Click Intersect 3D Elements
from the Operations toolbar (3D Geometry subtoolbar).
The application computes and displays the intersection between the face
and the sketch plane. The intersection is yellow meaning that you cannot
move it.


 You can apply the Relimitation
,
Corner
and Chamfer
commands on projections.
 If you select a face, its edges are projected.

 A canonicity detection is performed on projected curve according to
the application tolerance, in other words the application tries to
recognize sketcher elements like line or conic curves.
Due to the canonicity approximation changes may occur in resulting
projected curve types.
 If no canonicity has been detected the curve is projected as is.
 Intersected element are associative apart in the case of a multiple
distinct marks.
 A mark composed of several associated elements is managed as a single
curve (you can constraint it).
 If you apply the Parents/Children... command to a sketch
containing an intersection obtained after selecting a face or an edge,
the Parents command shows the last solid feature that modified
the intersection geometry. To see an example of this, refer to
Parents/Children paragraph of
Projecting 3D Elements onto the Sketch Plane.


 If you isolate a composite mark, as many simple geometry elements as
the mark was containing are created, associativity will not be available
anymore.
 If the intersected geometry is a plane face and there is no
intersection between this face and the sketcher plane, the resulting
intersection is an infinite line.
