Tests

• Matlab: implemented [Crane et al. 2010] “Trivial connections” for spherical and disk topologies
• ToDo: [Knoppel et al. 2013] “Globally optimal direction fields”
• Visualisation is slow, unless we use degenerate triangles as described here
• Tracing the vector field is also slow, since there was no pre-computation of transformation needed fo the discrete connection

• Also works for surfaces with boundary (angle defect decreased by π)