Commit 8f922157 authored by Jakub Klinkovský's avatar Jakub Klinkovský
Browse files

Added specialization of getEntityMeasure for quadrilaterals

parent 0941d75e

src/TNL/Meshes/Geometry/getEntityMeasure.h

+17 −0
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
#include <TNL/Meshes/Topologies/Vertex.h>

#include <TNL/Meshes/Topologies/Edge.h>

#include <TNL/Meshes/Topologies/Triangle.h>

#include <TNL/Meshes/Topologies/Quadrilateral.h>

#include <TNL/Meshes/Topologies/Tetrahedron.h>



namespace TNL {
@@ -117,6 +118,22 @@ getEntityMeasure( const Mesh< MeshConfig, Device > & mesh, 
    return getTriangleArea( v2.getPoint() - v0.getPoint(), v1.getPoint() - v0.getPoint() );

}



// Quadrilateral

template< typename MeshConfig, typename Device >

__cuda_callable__

typename MeshConfig::RealType

getEntityMeasure( const Mesh< MeshConfig, Device > & mesh,

                  const MeshEntity< MeshConfig, Device, Topologies::Quadrilateral > & entity )

{

    // measure = 0.5 * |AC x BD|, where AC and BD are the diagonals

    // Hence, we can use the same formula as for the triangle area.

    const auto& v0 = mesh.template getEntity< 0 >( entity.template getSubentityIndex< 0 >( 0 ) );

    const auto& v1 = mesh.template getEntity< 0 >( entity.template getSubentityIndex< 0 >( 1 ) );

    const auto& v2 = mesh.template getEntity< 0 >( entity.template getSubentityIndex< 0 >( 2 ) );

    const auto& v3 = mesh.template getEntity< 0 >( entity.template getSubentityIndex< 0 >( 3 ) );

    return getTriangleArea( v2.getPoint() - v0.getPoint(), v3.getPoint() - v1.getPoint() );

}



template< typename Real >

__cuda_callable__

Real