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Constraint face (non associative)
Menu access: Shape | Toolbox | Constraint face
Description:
Allows to apply positioning constraints between planar or cylindrical faces of a basic shape.
General philosophy:
Choose the constraint type to apply.
Select the face to position.
Select the reference face.
Set the chosen positioning and validate.
Available option(s):
The drop-down list allows you to
choose the type of constraint you want to apply:
DISTANCE : Allows to move the selected face at a given distance from the reference face.
- For two planar faces, the measured distance is the distance between the two plane. If the faces are not parallel, the default distance value is null.
- For two cylindrical faces, the measured distance is the distance between the axes.
- For a planar face and a cylindrical face, the measured distance is the distance between the plane and the axis.
In any case, after modification, the planar faces will be parallel, the axis of the cylindrical faces will be colinear and the axis will be parallel to the plane.
It is not possible to apply a distance constraint if:
- two planar faces are orthogonal,
- two cylindrical faces are orthogonal,
- the axis of a cylindric face is orthogonal to a planar face.
ANGLE : Allows to modify the angle between two planar and/or cylindrical faces.
You must give a fix point in order to define the rotation axis position. This point must be on the planar face or on the axis of the cylindrical face.
The rotation axis vector is the cross product between the Vz of the shape to modify and the Vz of the reference face. Therefore, it is not possible to modify the angle if:
- the two planar faces are parallel,
- the axis of the cylindrical faces are colinear,
- the axis of a cylindrical face is orthogonal with the planar face.
ALIGNMENT : Allows to align a face with another.
The method and restrictions are the same as the distance constraint.
PARALLEL : Allows to set a face parallel with another.
You must give a fix point in order to define the passing plane for a planar face or the axis for a cylindrical face. This point must be on the planar face or on the axis of the cylindrical face.
It is not possible to apply a parallelism constraint if:
- the two planar faces are orthogonal,
- the two axis of the cylindrical faces are orthogonal,
- the axis of a cylindrical face is orthogonal with a planar surface.
PERPENDICULAR: Allows to set a face perpendicular with another.
You must give a fix point in order to define the passing plane for a planar face or the axis for a cylindrical face. This point must be on the planar face or on the axis of the cylindrical face.
It is not possible to apply a perpendicularity constraint if:
- the two planar faces are parallel,
- the two axis of the cylindrical faces are parallel,
- the axis of a cylindrical face is colinear with a planar surface.
