本文整理汇总了C++中Velocity::doFsBegin方法的典型用法代码示例。如果您正苦于以下问题：C++ Velocity::doFsBegin方法的具体用法？C++ Velocity::doFsBegin怎么用？C++ Velocity::doFsBegin使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Velocity的用法示例。
在下文中一共展示了Velocity::doFsBegin方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: main
//.........这里部分代码省略.........
//--------------------------------------------------------------------------
// surface mesh
typedef base::mesh::BoundaryMeshBinder<Mesh>::Type BoundaryMesh;
BoundaryMesh boundaryMesh, immersedMesh;
// from boundary
{
// identify list of element boundary faces
base::mesh::MeshBoundary meshBoundary;
meshBoundary.create( mesh.elementsBegin(), mesh.elementsEnd() );
// generate a mesh from that list (with a filter)
base::mesh::generateBoundaryMesh( meshBoundary.begin(),
meshBoundary.end(),
mesh, boundaryMesh,
boost::bind( &boundaryFilter<dim>, _1 ) );
// make a surface mesh from the implicit surface
base::cut::generateSurfaceMesh<Mesh,Cell>( mesh, cells, immersedMesh );
}
// the composite field with geometry, velocity and pressure
typedef base::asmb::FieldBinder<Mesh,Velocity,Pressure> Field;
Field field( mesh, velocity, pressure );
// define the system blocks (U,U), (U,P), and (P,U)
typedef Field::TupleBinder<1,1,1>::Type TopLeft;
typedef Field::TupleBinder<1,2>::Type TopRight;
typedef Field::TupleBinder<2,1>::Type BotLeft;
std::vector<double> supportsU, supportsP;
std::size_t numDoFsU = std::distance( velocity.doFsBegin(), velocity.doFsEnd() );
supportsU.resize( numDoFsU );
std::size_t numDoFsP = std::distance( pressure.doFsBegin(), pressure.doFsEnd() );
supportsP.resize( numDoFsP );
base::cut::supportComputation( mesh, velocity, quadrature, supportsU );
base::cut::supportComputation( mesh, pressure, quadrature, supportsP );
velocity.scaleAndTagBasis( supportsU, 1.e-8 );
pressure.scaleAndTagBasis( supportsP, 1.e-8 );
//velocity.tagBasis( supportsU, 1.e-8 );
//pressure.tagBasis( supportsP, 1.e-8 );
// Fix one pressure dof
// Pressure::DoFPtrIter pIter = pressure.doFsBegin();
// std::advance( pIter, std::distance( pressure.doFsBegin(), pressure.doFsEnd() )/5 );
// (*pIter) -> constrainValue( 0, 0.0 );
// Number of DoFs after constraint application!
numDoFsU =
base::dof::numberDoFsConsecutively( velocity.doFsBegin(), velocity.doFsEnd() );
std::cout << "# Number of velocity dofs " << numDoFsU << std::endl;
numDoFsP =
base::dof::numberDoFsConsecutively( pressure.doFsBegin(), pressure.doFsEnd(),
numDoFsU );
std::cout << "# Number of pressure dofs " << numDoFsP << std::endl;
// kernels
typedef fluid::StressDivergence< TopLeft::Tuple> StressDivergence;
typedef fluid::Convection< TopLeft::Tuple> Convection;
typedef fluid::PressureGradient< TopRight::Tuple> GradP;
typedef fluid::VelocityDivergence<BotLeft::Tuple> DivU;