- (nullable LTRasterRegion *)getRegion:(nullable LTRasterRegionXForm *)xform error:(NSError **)error
public RasterRegion getRegion(RasterRegionXForm xform)
RasterRegionXForm object that LEADTOOLS uses to translate between display coordinates and image coordinates. If you specify null for this parameter, the scalar fields default to 1, the offsets default to 0, and the view perspective defaults to the image view perspective.
If the image does not have a region, this method will return an empty RasterRegion object.
The RasterRegion class provides a platform independent representation of a region of interest in an image that can be used in any platform supported by LEADTOOLS such as GDI, GDI+, and WPF. The RasterRegion class contains extensive methods and properties to manipulate the region data and save/load it to a byte array.
To convert a LEADTOOLS RasterRegion object to/from a device dependent region, you can use the following helper classes:
The RasterRegion class implements the IDisposable interface, so you must call Dispose on any region objects you create after using it.
For more information, refer to Creating a Region.
For more information, refer to Saving A Region.
For more information, refer to Working with the Existing Region.
For an example, refer to RasterRegion.
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