Member
2010-09-22, 01:42 PM
Did you want the image you are marking up to be part of the final result, or just a template?
I don't believe OmniGraphSketcher will work for you here. There's nothing in the documentation for the iPad version about pasting in images, and I can't paste in an image with either Mac or iPad version. Additionally, the Mac version has a related transparent window option to allow you to trace or compare with another image, and that feature is documented, so I'm not inclined to think that the documentation team just didn't document the feature you want.
However, OmniGraphSketcher may not really be the right tool for the job. OmniGraffle also has a freehand drawing facility which doesn't distort what you drew (OGS turns it into a smooth curve), offers layer support, and allows the insertion of other images. You can trace a figure and then remove the image you traced. If there's an Apple Store near you, you can try it out on one of their demo iPads.