Purpose
Creates a new arc-polyline object; corresponds to choosing Spatial > Create > Insert > Arc From 3 Points. 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","ArcFromPointsXY", X1, Y1, X2, Y2, X3, Y3)
Return Value
Polyline Object (! not Arc) If the function failed the return object is a Point (0,0).
Description
Use the ArcFromPointsXY function to create an arc-polyline object by giving three-point coordinates.
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 |
|---|---|
| X1, Y1, X2, Y2, X3, Y3 | Float values |
Examples
'Creates a new arc-polyline object.
Dim NewObj as object
NewObj = Exec("MapCAD.mbx","ArcFromPointsXY", 434204.02,5566829.13,434219.39,5566833.997,434218.18,5566852.19)
Insert into [Table] (obj) values (NewObj)
'Updates objects with calculated arc-polylines from coordinate columns (X1 ... Y3).
Update [Table] set obj=Exec("MapCAD.mbx","ArcFromPointsXY", X1, Y1, X2, Y2, X3, Y3)