Polygons

spatialware_type: spatialware_polygon

Features with this value are closed 2D or 3D features that are polygons. An polygon may or may not contain holes (may or may not be a donut polygon). This is used by both the reader and the writer.

Note: When reading polygons from SpatialWare, it is possible to encounter a polygon that is not closed or is composed of a non-contiguous path. In these cases, the pieces of the invalid polygon are all returned as lines instead.

Polygon features have the following special attributes associated with them:.

Attribute Name	Contents
spatialware_rotation	The rotation of the feature. The rotation is measured in degrees counterclockwise up from the horizontal.
spatialware_centroid_x	The feature’s centroid X location.
spatialware_centroid_y	The feature’s centroid Y location.
spatialware_centroid_z	The feature’s centroid Z location.
spatialware_polygon_centroid_x	The feature’s assigned centroid X location.
spatialware_polygon_centroid_y	The feature’s assigned centroid Y location.
spatialware_polygon_centroid_z	The feature’s assigned centroid Z location.
spatialware_fixed_pinch	The outer shell of some degenerate polygons may loop back on themselves and “pinch” closed back on the first/last coordinate somewhere in the middle. In these cases, FME will fix these polygons by adding the inner pinched area as a hole and set this flag to YES. In all other cases, this attribute will not be put on the feature when read. This attribute is ignored when writing to SpatialWare.