Tracking
Here are some examples of the visualization modes with the tracking tool in the prototype.
Here can be seen a surface of the side of a car with the tracking tool applyed in Wireframe Mode.

The sketched contour has three sides with G2 constraint and one with G-1 

(the one on the right)


The same surface in Shaded Mode.


The same surface in Gauss Curvature Mode.


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