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Mating spline with model objects |
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Spline, Build By points and By poles, can be mated with the following model objects:
•single-segment 3D curves (or individual segments of multi-segment spatial curves),
•sketch lines,
•edges,
•faces of solids and surfaces,
•construction planes and coordinate planes.
To create a mating, please select a spline point and an existing model object. The spline point should belong to the selected object. Otherwise it wouldn’t be possible to mate the spline with this object.
If a spline is plotted by vertices then you can use any of its points to create a mating. If a spline is plotted by poles, you can only use terminal points.
When you create a mating, the shape of the spline near the mating point is changed. The resulting shape depends on the mating condition: By tangent, Smooth or Perpendicular. For more details on mating conditions, see the Conditions for curves and surfaces mating Add-Ons Curves and Surfaces.
Step-by-step instructions
1.Select the spline mating point in the graphic area or in the Point parameters table (to select a point in the graphic area, first switch to Editing mode).
2.Expand the group of elements Shape Management and press the Conjugation 
button in the button group Method.
3.In the graphic area, select the model object to mate with the spline in the selected point. The selected object will be highlighted, its name will be displayed in the Mating object field. The Condition group of buttons will appear on the Parameter Panel to select the mating condition:
By tangent,
Smooth,
Perpendicular.
The available buttons depend on the possible mating variants with the specified objetct.
•When you select a spatial curve, you can create a mating with any of the three conditions. If the curve is a rectilinear object (e.g. a segment of a broken line), only the By tangent and Smooth conditions are available.
•If you select a plane or a face, the mating is created with the Perpendicular condition.
If you want to create a By tangent or Smooth mating, then you have to select a face (plane) and then select an object that determines the direction of the tangent. This object may be an edge of the selected face/plane or a curve belonging to this face/plane if this edge (curve) passes through the spline mating point. The object name will be displayed in the Border field. The Condition group will contain the By tangent and Smooth buttons.
After the mating object is selected, the phantom of the spline in the graphic area is rebuilt.
4.Select the mating condition by pressing the corresponding button in the Condition group.
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Condition Smooth is absent in the button group Condition if enabled. Smoothening spline. |
5.If needed, you can reverse the direction of the mating using the Change direction 
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When the parameters of the mating are modified, the phantom of the spline in the graphic area is rebuilt.
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When a mating is applied to a spline by poles, the displacement of points adjacent to the terminal points is restricted. This constraint is marked with a special symbol in corresponding cells of the point parameters table. For more details on applying constraints and other features of mating splines by poles with model objects, see section Notes on mating of the spline by poles with model objects. |
See Also
