uvEdgeInvariant.cpp

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#include "uvEdgeInvariant.hpp"
#include <wmtk/Mesh.hpp>
#include <wmtk/simplex/Simplex.hpp>
 
namespace wmtk::invariants {
uvEdgeInvariant::uvEdgeInvariant(const Mesh& position_mesh, const Mesh& uv_mesh)
    : Invariant(position_mesh)
    , m_uv_mesh(uv_mesh)
{}
 
bool uvEdgeInvariant::before(const simplex::Simplex& s) const
{
    if (s.primitive_type() == PrimitiveType::Vertex) {
        auto uv_v = mesh().map_to_child(m_uv_mesh, s);
        for (const auto& v : uv_v) {
            if (m_uv_mesh.is_boundary(PrimitiveType::Vertex, v.tuple())) return false;
        }
        return true;
    }
 
    else if (s.primitive_type() == PrimitiveType::Edge) {
        auto uv_v1 = mesh().map_to_child(m_uv_mesh, simplex::Simplex::vertex(mesh(), s.tuple()));
        auto uv_v2 = mesh().map_to_child(
            m_uv_mesh,
            simplex::Simplex::vertex(
                mesh(),
                mesh().switch_tuple(s.tuple(), PrimitiveType::Vertex)));
 
        for (const auto& v : uv_v1) {
            if (m_uv_mesh.is_boundary(PrimitiveType::Vertex, v.tuple())) return false;
        }
        for (const auto& v : uv_v2) {
            if (m_uv_mesh.is_boundary(PrimitiveType::Vertex, v.tuple())) return false;
        }
 
        return true;
    }
 
    return true;
}
 
 
} // namespace wmtk::invariants