SelectBranch
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class SelectBranch : public feasst::TrialSelectAngle
A random particle of given type is selected if previously perturbed sites are not available. Select two mobile sites bonded to anchor 1, that also forms a third angle with anchor 2.
Thus, the bonded topology appears as:
::
anchor2 | anchor1 / \ mobile1 mobile2
In the source code, these are often shortened as anchor1->a1, mobile2->m2, etc.
Arguments
mobile_site2 : index of second mobile site.
TrialSelectAngle arguments.