openseadragon/openseadragon — pull request #243 by avandecreme (2013-10-03 21:35:47+00:00)
Title: Add coordinates conversion methods to viewport.

I am not sure if we want to add viewerElementToViewportCoordinates and viewportToViewerElementCoordinates as they are just calls to pixelToPoint and pointToPixel.
I just find the originals names not intuitive.