Expose 3d point attribute p of SfmTrack in wrapper

[johnwlambert]

• Grant SfmTrack 3d point access to wrapper
• Update the list of updated python examples, to reflect available examples implemented already in C++

[dellaert]

I’d prefer the name point3

[johnwlambert]

sure, so rename p to be point3? I think we will need to rename it in the following examples in this PR then since it's a breaking change:

• examples/CreateSFMExampleData.cpp
• timing/timeSFMBALnavTcam.cpp
• timing/timeSFMBAL.cpp
• examples/SFMExample_bal_COLAMD_METIS.cpp
• examples/SFMExampleExpressions_bal.cpp
• examples/SFMExample_bal.cpp

[varunagrawal]

Nope, rename get3dPoint to point3.

[johnwlambert]

Ah I see, @dellaert do you mind confirming that and I can quickly make the change? I guess “get*()” is not preferred in GTSAM?

[dellaert]

Indeed, no get...

[johnwlambert]

pushed the update, should be good to go now