B-Spline and Plane Intersection
You can create a point at the intersection of a B-Spline and a plane. The command follows the B-Spline from its tail toward its head and creates a point when the spline first pierces the surface, only creating a single point.
To Create a Point at the Intersection of a B-Spline and Plane:
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From the menu, select Construct>New Points> Intersection>B-Spline and Plane Intersection.
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Select the B-Splines you wish to consider.
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Select one or more planes to test.
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When prompted, enter an approximation tolerance. Generally, the default value is fine.
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The Construct New Point dialog will appear. Leave the coordinates as-is (they are calculated for you), and specify the desired collection, group, and point name (or select an existing collection or group from the dropdown.
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Click OK to create the point.