Sketcher Ellipse: porting tangent-line to DeriVector2
Replacing a ton of unreadable, sage generated math code with
easy-to-manage C++ code.
Sketcher Ellipse: porting internal align-t to DeriVector2
Sketcher Ellipse: small math refactor; const members
Moving the repeating code computing deriv+value of major radius to a
method of GCS::Ellipse.
Marking several methods of DeriVector2 as const member functions.
Sketcher Ellipse: porting arc angle rules to DeriVector2
Just porting.
Probably a complete remake of the concept is worth... Angles can be
calculated explicitly, there's no need to load the solver. I see no
benefits whatsoever on using the solver to keep track of angle values.
Sketcher Ellipse: porting equality to DeriVector2
Fix AngleViaPoint to support new derivative calculation technique.
OpticConstraints: Adding Snell's law. Fix AngleViaPoint to support new derivative calculation technique.
Snell's law constraint added to GCS, but not yet exposed and cannot be
tested.
Since the way CalculateNormal() returns derivatives had changed,
AngleViaPoint constraint needed modifications. Nothing serious.
OpticConstraints: SnellsLaw progress
Addable through python. Fix math. Some quick-and-dirty visual stuff to
get rid of hangs and to see the constraint in action.
OpticConstraints: SnellsLaw: flipping logic fix
OpticConstraints: SnellsLaw progress
Added toolbar button. Allowed editing a datum by doubleclick. New error
message approach during constraint creation.
OpticConstraints: SnellsLaw
OpticConstraints: SnellsLaw: list label improvement
OpticConstraints: SnellsLaw: fix after rebase
OpticConstraints: SnellsLaw: expose helper constraints
Snell's law internally is made of three constraints: point-on-object,
coincident and the Snell's sin/sin. They were all buried under one UI
constraint. Exposing them allows to construct reflection and
birefringence on the point (attempting to do so used to result in
redundant constraints and was often not functional at all).
This commit breaks compatibility with older files.
OpticConstraints: SnellsLaw: small refactor of math
Placing the duplicated code of error and gradient calculation into a
private method.
OpticConstraints: SnellsLaw: fix datum edit unit
OpticConstraints: SnellsLaw: fix datum edit bug
After previous fix, the dimensionless value was not accepted (the
constraint's value did not change, the changes were ignored).
GCS::Vector2D was morphed into a DeriVector2, a derivative-aware vector.
A bunch of vector math methods were added that implicitly calculate
respective derivatives. Now, there is no need to calculate the partials
- most is done implicitly.
