Purpose
Create a spline given a polyline or region; corresponds to choosing Spatial > Edit > Modify > Spline. This function requires the MapCAD Tool and can be executed via the Exec() command. You can call this function from the MapBasic window in MapInfo Pro.
Syntax
Exec("MapCAD.mbx"," CreateSpline", Tolerance, SourceObj)
Return Value
Polyline or Region object, depending on the type of the source object. If no spline can be calculated or the function failed, the return object is a Point (0,0).
Description
Use the CreateSpline function to create a polyline or region that is mapped from a calculated spline.
The MapCAD tool must be loaded. This function requires an active map window to determine the
projection and units. To set the calculation accuracy, open the MapCAD settings
dialog.
| Parameters | Description |
|---|---|
| Tolerance | Float value: specifies the maximum divergence for calculating the curvature. The smaller the value, the more precise the curve, but higher the number of nodes. Default value = 0.5. |
| SourceObj | Object value, Polyline or Region |
Examples
'Create a polyline or region as a spline.
Dim NewObj as object
NewObj = Exec("MapCAD.mbx","CreateSpline",0.5, SourceObj)