ConstantElementMetric Class Reference

Fake quality metric for testing numerial gradient. More...

Inheritance diagram for ConstantElementMetric:

Collaboration diagram for ConstantElementMetric:

Public Member Functions
std::string	get_name () const
int	get_negate_flag () const
	1 if metric should be minimized, -1 if metric should be maximized.
bool	evaluate (PatchData &pd, size_t, double &value, MsqError &)
	Get metric value at a logical location in the patch.
bool	evaluate_with_indices (PatchData &pd, size_t elem_idx, double &value, std::vector< size_t > &indices, MsqError &)
	Default implementation for all element-based metrics.

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Detailed Description

Fake quality metric for testing numerial gradient.

Implement an element metric for which the "quality" is always 1.0. The resulting gradient and Hessian should always be zero.

Definition at line 156 of file QualityMetricTest.cpp.

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Member Function Documentation

bool ConstantElementMetric::evaluate	(	PatchData &	pd,
		size_t	handle,
		double &	value,
		MsqError &	err
	)		[inline, virtual]

Get metric value at a logical location in the patch.

Evaluate the metric at one location in the PatchData.

Parameters:

pd	The patch.
handle	The location in the patch (as passed back from get_evaluations).
value	The output metric value.

Implements MBMesquite::QualityMetric.

Definition at line 167 of file QualityMetricTest.cpp.

    {
        value = 1.0;
        return true;
    }

bool ConstantElementMetric::evaluate_with_indices	(	PatchData &	pd,
		size_t	handle,
		double &	value,
		std::vector< size_t > &	indices,
		MsqError &	err
	)		[inline, virtual]

Default implementation for all element-based metrics.

Fill 'indices' with all free vertex indices in element, and call 'evaluate'.

Reimplemented from MBMesquite::ElementQM.

Definition at line 172 of file QualityMetricTest.cpp.

References conn, MBMesquite::PatchData::element_by_index(), MBMesquite::MsqMeshEntity::get_vertex_index_array(), MBMesquite::MsqMeshEntity::node_count(), and MBMesquite::PatchData::num_free_vertices().

    {
        MsqMeshEntity& elem = pd.element_by_index( elem_idx );
        unsigned nv         = elem.node_count();
        const size_t* conn  = elem.get_vertex_index_array();
        indices.clear();
        for( unsigned i = 0; i < nv; ++i )
            if( conn[i] < pd.num_free_vertices() ) indices.push_back( conn[i] );

        value = 1.0;
        return true;
    }

std::string ConstantElementMetric::get_name

(

)

const [inline, virtual]

Implements MBMesquite::QualityMetric.

Definition at line 159 of file QualityMetricTest.cpp.

    {
        return "Fake metric for testing numerical gradient";
    }

int ConstantElementMetric::get_negate_flag

(

)

const [inline, virtual]

1 if metric should be minimized, -1 if metric should be maximized.

Implements MBMesquite::QualityMetric.

Definition at line 163 of file QualityMetricTest.cpp.

    {
        return 1;
    }

List of all members.

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The documentation for this class was generated from the following file:

• QualityMetricTest.cpp