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Surprisingly there was no code to handle arcofellipse tangencies using AngleViaPoint constraint.
fixes#3659
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the position obtained from the SoPath of the picked point when entering
the combined icon object is not the center of the icon, what leads to
wrong preselection or no preselection at all.
This commit uses the translation of the Constraint node, which is the same that
is used to locate the constraint icons on the screen in the first place.
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Trimming was not considering a case where an ellipse is trimmed with respect to its own internal aligment geometry.
This resulted in Coincident Constraints with PointPos = Sketcher::none, which is invalid.
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Intercurve fillet uses endpoint constraints for improved accuracy, but before this
commit was only considering a coincident constraint. Now it also considers an endpoint
tangency or perpendicular.
delConstraintOnPoint with coincidentonly=false, was not checking endpoint perpendiculars and
would therefore fail to delete them.
https://forum.freecadweb.org/viewtopic.php?f=3&t=31594&start=30#p265731
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This commit introduces two functions to operate on all datum constraints exclusively:
- Make all datum constraints driving or not driving, depending on the argument.
- Move all datum constraints at the end of the constraint list.
The practical use an ongoing effort towards improving the block constraint behaviour, that will be defered to 0.19
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Centralise the knowledge on whether a constraint is dimensional or not within the constraint
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This ensures that the exception back in the c++ that invoked python retains the type of exception and can be properly catched.
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Generally, bounded curves require that the curves are coincident at one point, the vertex to be filleted.
Trimmed curves, like combinations of line segments, arcs of conics, do not require it, as they are able to extend the trimmed
curve using the basis curve. However, they work fine when there is such a coincidence.
