Custom vendor format

[Benjamin Gilbert]

On 05/12/2014 06:33 PM, Donald Regula, MD wrote:
> Many of us use online virtual-slides for testing medical students.
> It would be useful to have a mechanism to "shift" the locations in both
> X and Y by moving the origin.

It should be straightforward to perform the coordinate shift in the 
application, before calling into OpenSlide.  openslide_read_region() 
handles regions outside the slide boundary by returning transparent pixels.

--Benjamin Gilbert