Simulate with complex geometries and complex physics
PositionBased
Exclude critical neighbors from the neighborlists of MESHFREE points
The picture shows the exclusion algorithm based on the position, boundary distance and boundary normal of two MESHFREE points.
This constraint is purely algebraic.
Two MESHFREE points i and j are excluded from each other if they meet the following position-normal-constraint.
\begin{align} \left( {\bf x}_j - {\bf x}_i \right)^T \cdot {\bf n}_i < 0\end{align}
OR
\begin{align} \left( {\bf x}_i - {\bf x}_j \right)^T \cdot {\bf n}_j < 0\end{align}
See NEIGHBOR_FilterMethod in particular.