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. |
|
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. |