RiverWare 5.3: Background Image Support Enhancements for the Simulation View
3-23-2010 -- Phil Weinstein

Two enhancements were made to the background image support for the Simulation View. These enhancements are not relevant for the new Geospatial View, which implements distinct support for a background image. In the Simulation View ...

• Background images are no longer limited to image files in or under the loaded model file directory. That limitation can still be imposed through the use of a new checkbox. With this enhancement, it is no longer necessary to load (or save) the workspace before configuring the Simulation View's background image.
   
• When rescaling the image or changing the pixel offsets from the left or bottom edges of the workspace, the user has the option to "Retain Object Positions" (in the Simulation View) relative to the background image.

Note that the Geospatial View will not support independent rescaling of the image's horizontal and vertical dimensions, nor independent horizontal and vertcial scales for real-world coordinates. Also the Geospatial View will not support map images rotated with respect to compass direction. Considering those limitations, some users may prefer to continue to use the Simulation View with a background map image.

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