/// <summary>
/// Two <see cref="CoordinateMapping"/> are equal if all entries of their <see cref="Fields"/>-properties are
/// equal in reference. Note that this is a very strict condition; if the mappings should be compared just on
/// <see cref="UnsetteledCoordinateMapping"/>-level, the <see cref="UnsetteledCoordinateMapping.EqualsUnsetteled"/>-comparison
/// should be used.
/// </summary>
public override bool Equals(object obj)
{
if (!base.Equals(obj))
{
return(false);
}
CoordinateMapping othr = obj as CoordinateMapping;
if (othr == null)
{
return(false);
}
if (othr.m_Fields.Length != this.m_Fields.Length)
{
return(false);
}
for (int i = 0; i < othr.m_Fields.Length; i++)
{
if (!object.ReferenceEquals(this.m_Fields[i], othr.m_Fields[i]))
{
return(false);
}
}
return(true);
}
/// <summary>
/// Constructs a new vector, based on the mapping <paramref name="mapping"/>;
/// </summary>
/// <param name="mapping">
/// The mapping to transform indices; This parameter is
/// used to initialize <see cref="Mapping"/>.
/// </param>
/// <param name="presentExternal">
/// value for the <see cref="PresentExternal"/>-property;
/// </param>
public CoordinateVector(CoordinateMapping mapping, bool presentExternal)
{
m_mapping = mapping;
m_PresentExternal = presentExternal;
if (m_PresentExternal)
{
m_Count = m_mapping.Ntotal;
}
else
{
m_Count = m_mapping.LocalLength;
}
}
/// <summary>
/// And another wrapper.
/// </summary>
static public void Evaluate(this SpatialOperator op, double time, SubGrid subGrid = null, SubGridBoundaryModes subGridBoundaryMode = SubGridBoundaryModes.OpenBoundary, params DGField[] f)
{
if (op.DomainVar.Count + op.ParameterVar.Count + op.CodomainVar.Count != f.Length)
{
throw new ArgumentException("wrong number of domain/parameter/codomain fields", "f");
}
CoordinateMapping inp = new CoordinateMapping(f.GetSubVector(0, op.DomainVar.Count));
DGField[] Parameters = f.GetSubVector(op.DomainVar.Count, op.ParameterVar.Count);
CoordinateMapping outp = new CoordinateMapping(f.GetSubVector(op.DomainVar.Count + op.ParameterVar.Count, op.CodomainVar.Count));
Evaluate(op, 1.0, 0.0, inp, Parameters, outp, subGrid, null, null, subGridBoundaryMode, time);
}
/// <summary>
/// Another wrapper for
/// <see cref="Evaluate(SpatialOperator,double,double,CoordinateMapping,IList{DGField},CoordinateMapping,SubGrid,EdgeQuadratureScheme,CellQuadratureScheme,SpatialOperator.SubGridBoundaryModes)"/>
/// </summary>
/// <param name="DomainFields">
/// the domain variables; the number of elements
/// must be equal to the number of elements in the <see cref="DomainVar"/>-list;
/// </param>
/// <param name="CodomainFields">
/// the codomain variables; the number of elements
/// must be equal to the number of elements in the <see cref="CodomainVar"/>-list;
/// </param>
/// <remarks>
/// If some of the input field, i.e. some element of <paramref name="DomainFields"/>, is contained in the
/// output fields, i.e. in the list <paramref name="CodomainFields"/>, these DG fields will be cloned to ensure
/// correct operation of the operator evaluation.<br/>
/// It is not a good choice to use this
/// function if this operator should be evaluated multiple times
/// and
/// contains linear components (i.e. <see cref="ContainsLinear"/> returns true);
/// If the later one is the case, the matrix which represents
/// the linear components of the operator must be computed first, which is computational- and
/// memory - intensive;
/// After execution of this method, the matrix will be lost;
/// If multiple evaluation is desired, the <see cref="Evaluator"/>-class should be used,
/// in which the matrix of the operator will persist;
/// However, if no linear components are present, the performance of this function should
/// be almost comparable to the use of the <see cref="Evaluator"/>-class;
/// </remarks>
/// <param name="op"></param>
/// <param name="time"></param>
static public void Evaluate(this SpatialOperator op, IList <DGField> DomainFields, IList <DGField> CodomainFields, double time = double.NaN)
{
if (DomainFields.Count != op.DomainVar.Count)
{
throw new ArgumentException("wrong number of domain fields", "DomainFields");
}
if (CodomainFields.Count != op.CodomainVar.Count)
{
throw new ArgumentException("wrong number of domain fields", "CodomainFields");
}
CoordinateMapping inp = new CoordinateMapping(DomainFields);
CoordinateMapping outp = new CoordinateMapping(CodomainFields);
Evaluate(op, 1.0, 0.0, inp, null, outp, null, null, null, SubGridBoundaryModes.OpenBoundary, time);
}
/// <summary>
/// Constructs a new vector, based on the mapping <paramref name="mapping"/>;
/// </summary>
/// <param name="mapping">
/// The mapping to transform indices; This parameter is
/// used to initialize <see cref="Mapping"/>.
/// </param>
/// <remarks>
/// <see cref="PresentExternal"/> is initialized to false.
/// </remarks>
public CoordinateVector(CoordinateMapping mapping) :
this(mapping, false)
{
}
/// <summary>
/// Evaluates this operator for given DG fields;
/// </summary>
/// <param name="DomainMapping">
/// the domain variables, or "input data" for the operator; the number
/// of elements must be equal to the number of elements in the
/// <see cref="DomainVar"/>-list;
/// </param>
/// <param name="Params">
/// List of parameter fields; May be null
/// </param>
/// <param name="CodomainMapping">
/// the co-domain variables, or "output" for the evaluation of the
/// operator; the number of elements must be equal to the number of
/// elements in the <see cref="CodomainVar"/>-list;
/// </param>
/// <param name="alpha">
/// scaling of the operator
/// </param>
/// <param name="beta">
/// scaling of the accumulator (<paramref name="CodomainMapping"/>);
/// </param>
/// <param name="sgrd">
/// subgrid, for restricted evaluation; null indicates evaluation on
/// the full grid.
/// </param>
/// <param name="bndMode">
/// Treatment of subgrid boundaries, if <paramref name="sgrd"/> is not
/// null. See <see cref="Evaluator"/>
/// </param>
/// <param name="qInsEdge">
/// Optional definition of the edge quadrature scheme. Since this
/// already implies a domain of integration, must be null if
/// <paramref name="sgrd"/> is not null.
/// </param>
/// <param name="qInsVol">
/// Optional definition of the volume quadrature scheme. Since this
/// already implies a domain of integration, must be null if
/// <paramref name="sgrd"/> is not null.
/// </param>
/// <remarks>
/// If some of the input data, <paramref name="DomainMapping"/>, is
/// contained in the output data, <paramref name="CodomainMapping"/>,
/// these DG fields will be cloned to ensure correct operation of the
/// operator evaluation.<br/>
/// It is not a good choice to use this function if this operator
/// should be evaluated multiple times and contains linear components
/// (i.e. <see cref="ContainsLinear"/> returns true); If the latter is
/// the case, the matrix which represents the linear components of the
/// operator must be computed first, which is computational- and
/// memory-intensive; After execution of this method, the matrix will
/// be lost; If multiple evaluation is desired, the
/// <see cref="Evaluator"/>-class should be used, in which the matrix
/// of the operator will persist; However, if no linear components are
/// present, the performance of this function should be almost
/// comparable to the use of the <see cref="Evaluator"/>-class;
/// </remarks>
static public void Evaluate(
this SpatialOperator op,
double alpha, double beta,
CoordinateMapping DomainMapping, IList <DGField> Params, CoordinateMapping CodomainMapping,
SubGrid sgrd = null,
EdgeQuadratureScheme qInsEdge = null,
CellQuadratureScheme qInsVol = null,
SpatialOperator.SubGridBoundaryModes bndMode = SubGridBoundaryModes.OpenBoundary,
double time = double.NaN) //
{
using (new FuncTrace()) {
if (sgrd != null && (qInsEdge != null || qInsVol != null))
{
throw new ArgumentException("Specification of Subgrid and quadrature schemes is exclusive: not allowed to specify both at the same time.", "sgrd");
}
#if DEBUG
op.Verify(); //this has already been done during this.Commit()
#endif
IList <DGField> _DomainFields = DomainMapping.Fields;
IList <DGField> _CodomainFields = CodomainMapping.Fields;
DGField[] _DomainFieldsRevisited = new DGField[_DomainFields.Count];
bool a = false;
for (int i = 0; i < _DomainFields.Count; i++)
{
DGField f = _DomainFields[i];
if (_CodomainFields.Contains(f))
{
// some of the domain variables (input data)
// is also a member of the codomain variables (output);
// the data need to be cloned to provide correct results
a = true;
_DomainFieldsRevisited[i] = (DGField)f.Clone();
}
else
{
_DomainFieldsRevisited[i] = f;
}
}
CoordinateMapping domainMappingRevisited;
if (a)
{
domainMappingRevisited = new CoordinateMapping(_DomainFieldsRevisited);
}
else
{
domainMappingRevisited = DomainMapping;
}
if (sgrd != null)
{
CellMask cm = (sgrd == null) ? null : sgrd.VolumeMask;
EdgeMask em = (sgrd == null) ? null : sgrd.AllEdgesMask;
qInsEdge = new EdgeQuadratureScheme(true, em);
qInsVol = new CellQuadratureScheme(true, cm);
}
var ev = op.GetEvaluatorEx(
domainMappingRevisited, Params, CodomainMapping,
qInsEdge,
qInsVol);
if (sgrd != null)
{
ev.ActivateSubgridBoundary(sgrd.VolumeMask, bndMode);
}
CoordinateVector outp = new CoordinateVector(CodomainMapping);
ev.time = time;
ev.Evaluate <CoordinateVector>(alpha, beta, outp);
}
}
/// <summary>
/// Constructs a mapping from associated with a given <see cref="SubGrid"/> on the basis of the original mapping
/// </summary>
/// <param name="context">the context object</param>
/// <param name="cm">The original mapping</param>
/// <param name="subgrid">The subgrid</param>
public SubgridCoordinateMappingExt(Context context, CoordinateMapping cm, SubGrid subgrid) : base(context, subgrid, cm.Fields)
{
}
