Purpose
Returns an object based on an existing object, with new nodes added at points where the object intersects a second object. You can call this function from the MapBasic window in MapInfo Pro.
Syntax
OverlayNodes( input_object, overlay_object ) input_object is an object whose nodes will be included in the output object; it may not be a point or text object.
overlay_object is an object that will be intersected with input_object; it may not be a point or text object.
Return Value
A region object or a polyline object.
Description
The OverlayNodes() function returns an object that contains all the nodes in input_object plus nodes at all locations where the input_object intersects with the overlay_object.
If the input_object is a closed object (region, rectangle, rounded rectangle, or ellipse), OverlayNodes() returns a region object. If input_object is a linear object (line, polyline, or arc), OverlayNodes() returns a polyline.
The object returned retains all styles (color, etc.) of the original input_object.
To determine whether the OverlayNodes() function added any nodes to the input_object, use the ObjectInfo() function to count the number of nodes (OBJ_INFO_NPNTS). Even if two objects do intersect, the OverlayNodes() function does not add any nodes if input_object already has nodes at the points of intersection.
See Also: