Scale a target matrix by the size of another. More...

#include <LambdaTarget.hpp>

Inheritance diagram for MBMesquite::LambdaTarget:

Collaboration diagram for MBMesquite::LambdaTarget:

Public Member Functions
	LambdaTarget (TargetCalculator lambda_source, TargetCalculator composite_source)
	~LambdaTarget ()
bool	get_3D_target (PatchData &pd, size_t element, Sample sample, MsqMatrix< 3, 3 > &W_out, MsqError &err)
	Get a target matrix.
bool	get_2D_target (PatchData &pd, size_t element, Sample sample, MsqMatrix< 2, 2 > &W_out, MsqError &err)
	Get a target matrix.
bool	get_surface_target (PatchData &pd, size_t element, Sample sample, MsqMatrix< 3, 2 > &W_out, MsqError &err)
	Get a target matrix.
bool	have_surface_orient () const
	Use 3x2 W for surface elements if true, 2x2 W if false.
Private Attributes
TargetCalculator *	lambdaSource
TargetCalculator *	compositeSource

Detailed Description

Scale a target matrix by the size of another.

Combine two target matrices by extracting a scalar representation of the size (lambda) of one and use that value to scale the other. The expected use of this target calculator is to preserve the size of a reference mesh while targeting ideal elements for shape.

Definition at line 48 of file LambdaTarget.hpp.

Constructor & Destructor Documentation

MBMesquite::LambdaTarget::LambdaTarget	(	TargetCalculator *	lambda_source,
		TargetCalculator *	composite_source
	)

Parameters:

lambda_source	Target calculator from which to extract scaling factor (lambda).
composite_source	Target calcualtor from which to obtain a target that will be scaled by lambda.

Definition at line 40 of file LambdaTarget.cpp.

    : lambdaSource( lambda_source ), compositeSource( composite_source )
{
}

MBMesquite::LambdaTarget::~LambdaTarget ( )

Definition at line 45 of file LambdaTarget.cpp.

{}

Member Function Documentation

bool MBMesquite::LambdaTarget::get_2D_target	(	PatchData &	pd,
		size_t	element,
		Sample	sample,
		MsqMatrix< 2, 2 > &	W_out,
		MsqError &	err
	)		`[virtual]`

Get a target matrix.

Parameters:

pd	The current PatchData
element	The index an element within the patch data.
sample	The sample point in the element.
W_out	The resulting target matrix.

Implements MBMesquite::TargetCalculator.

Definition at line 67 of file LambdaTarget.cpp.

References compositeSource, MBMesquite::det(), MBMesquite::TargetCalculator::get_2D_target(), lambdaSource, and MSQ_CHKERR.

{
    bool valid = lambdaSource->get_2D_target( pd, element, sample, W_out, err );
    if( MSQ_CHKERR( err ) && !valid ) return false;
    double det1 = det( W_out );

    valid = compositeSource->get_2D_target( pd, element, sample, W_out, err );
    if( MSQ_CHKERR( err ) && !valid ) return false;
    double det2 = det( W_out );

    if( det2 < 1e-15 ) return false;

    W_out *= sqrt( det1 / det2 );
    return true;
}

bool MBMesquite::LambdaTarget::get_3D_target	(	PatchData &	pd,
		size_t	element,
		Sample	sample,
		MsqMatrix< 3, 3 > &	W_out,
		MsqError &	err
	)		`[virtual]`

Get a target matrix.

Parameters:

pd	The current PatchData
element	The index an element within the patch data.
sample	The sample point in the element.
W_out	The resulting target matrix.

Implements MBMesquite::TargetCalculator.

Definition at line 47 of file LambdaTarget.cpp.

References MBMesquite::cbrt(), compositeSource, MBMesquite::det(), MBMesquite::TargetCalculator::get_3D_target(), lambdaSource, and MSQ_CHKERR.

{
    bool valid = lambdaSource->get_3D_target( pd, element, sample, W_out, err );
    if( MSQ_CHKERR( err ) && !valid ) return false;
    double det1 = det( W_out );

    valid = compositeSource->get_3D_target( pd, element, sample, W_out, err );
    if( MSQ_CHKERR( err ) && !valid ) return false;
    double det2 = det( W_out );

    if( det2 < 1e-15 ) return false;

    W_out *= MBMesquite::cbrt( fabs( det1 / det2 ) );
    return true;
}

bool MBMesquite::LambdaTarget::get_surface_target	(	PatchData &	pd,
		size_t	element,
		Sample	sample,
		MsqMatrix< 3, 2 > &	W_out,
		MsqError &	err
	)		`[virtual]`

Get a target matrix.

Parameters:

pd	The current PatchData
element	The index an element within the patch data.
sample	The sample point in the element.
W_out	The resulting target matrix.

Implements MBMesquite::TargetCalculator.

Definition at line 87 of file LambdaTarget.cpp.

References MBMesquite::MsqMatrix< R, C >::column(), compositeSource, moab::cross(), MBMesquite::TargetCalculator::get_surface_target(), lambdaSource, and MSQ_CHKERR.

{
    bool valid = lambdaSource->get_surface_target( pd, element, sample, W_out, err );
    if( MSQ_CHKERR( err ) && !valid ) return false;
    MsqVector< 3 > cross = W_out.column( 0 ) * W_out.column( 1 );
    double det1          = cross % cross;  // length squared

    valid = compositeSource->get_surface_target( pd, element, sample, W_out, err );
    if( MSQ_CHKERR( err ) && !valid ) return false;
    cross       = W_out.column( 0 ) * W_out.column( 1 );
    double det2 = cross % cross;  // length squared

    if( det2 < 1e-15 ) return false;

    W_out *= sqrt( sqrt( det1 / det2 ) );
    return true;
}

bool MBMesquite::LambdaTarget::have_surface_orient ( ) const [inline, virtual]

Use 3x2 W for surface elements if true, 2x2 W if false.

If true, then the targets for surface elements attempt some control of orientation and therefore get_surface_target must be used to get the targets. If false, then the target contains no orientation data and is therefore the same as the corresponding 2D target for surface elements. In this case, get_2D_target should be used.

Implements MBMesquite::TargetCalculator.

Definition at line 67 of file LambdaTarget.hpp.

References compositeSource, and MBMesquite::TargetCalculator::have_surface_orient().

    {
        return compositeSource->have_surface_orient();
    }

Member Data Documentation

TargetCalculator* MBMesquite::LambdaTarget::compositeSource [private]

Definition at line 74 of file LambdaTarget.hpp.

Referenced by get_2D_target(), get_3D_target(), get_surface_target(), and have_surface_orient().

TargetCalculator* MBMesquite::LambdaTarget::lambdaSource [private]

Definition at line 73 of file LambdaTarget.hpp.

Referenced by get_2D_target(), get_3D_target(), and get_surface_target().

List of all members.

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

Public Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation