MRMeshTriPoint.h

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#pragma once
 
#include "MRId.h"
#include "MRTriPoint.h"
#include "MREdgePoint.h"
 
namespace MR
{
 
struct WeightedVertex
{
    VertId v;
    float weight = 0;
};
 
struct MeshTriPoint
{
    EdgeId e; 
    TriPointf bary;
 
    [[nodiscard]] MeshTriPoint() = default;
    [[nodiscard]] MeshTriPoint( NoInit ) : e( noInit ), bary( noInit ) { }
    [[nodiscard]] MeshTriPoint( EdgeId e, TriPointf bary ) : e( e ), bary( bary ) { }
    [[nodiscard]] MeshTriPoint( const MeshEdgePoint & ep ) : e( ep.e ), bary( ep.a, 0 ) { }
    [[nodiscard]] MeshTriPoint( const MeshTopology & topology, VertId v ) : MeshTriPoint( MeshEdgePoint( topology, v ) ) { }
 
    template< typename T >
    [[nodiscard]] MeshTriPoint( EdgeId e, const Vector3<T> & p, const Vector3<T> & v0, const Vector3<T> & v1, const Vector3<T> & v2 ) : e( e ), bary( p, v0, v1, v2 ) { }
 
    [[nodiscard]] MRMESH_API VertId inVertex( const MeshTopology & topology ) const;
 
    [[nodiscard]] bool inVertex() const { return bary.inVertex() >= 0; }
 
    [[nodiscard]] MRMESH_API MeshEdgePoint onEdge( const MeshTopology & topology ) const;
 
    [[nodiscard]] MRMESH_API bool isBd( const MeshTopology & topology, const FaceBitSet * region = nullptr ) const;
 
    [[nodiscard]] MRMESH_API bool fromTriangle( const MeshTopology & topology, FaceId f ) const;
 
    [[nodiscard]] bool valid() const { return e.valid(); }
    [[nodiscard]] explicit operator bool() const { return e.valid(); }
 
    [[nodiscard]] MRMESH_API MeshTriPoint lnext( const MeshTopology & topology ) const;
 
    [[nodiscard]] MRMESH_API MeshTriPoint canonical( const MeshTopology & topology ) const;
 
    [[nodiscard]] MRMESH_API std::array<WeightedVertex, 3> getWeightedVerts( const MeshTopology & topology ) const;
 
    [[nodiscard]] bool operator==( const MeshTriPoint& rhs ) const = default;
};
 
 
[[nodiscard]] MRMESH_API bool same( const MeshTopology & topology, const MeshTriPoint& lhs, const MeshTriPoint & rhs );
 
[[nodiscard]] MRMESH_API bool fromSameTriangle( const MeshTopology & topology, MeshTriPoint & a, MeshTriPoint & b );
 
[[nodiscard]] inline bool fromSameTriangle( const MeshTopology & topology, MeshTriPoint && a, MeshTriPoint && b ) { return fromSameTriangle( topology, a, b ); }
 
[[nodiscard]] MRMESH_API MeshTriPoint getVertexAsMeshTriPoint( const MeshTopology & topology, EdgeId e, VertId v );
 
 
} // namespace MR