best_fit Class Reference

The main class for the best_fit routine. More...

#include <best_fit.h>

Public Member Functions
double	ANN ()
	Determines two corresponding point-sets for the ICP-Method using the Nearest-Neighbour-Algorithm.
	best_fit ()
bool	Coarse_correction ()
	Check and corrects mesh-position by rotating around all coordinate-axes with 180 degree.
double	CompTotalError (MeshCore::MeshKernel &mesh)
	Computes error between mesh and the input-shape through intersection along the normal-directions and returns an average-error-value.
double	CompTotalError ()
	Computes error between the input-shapes through intersection along the normal-directions and returns an average-error-value.
bool	Initialize_Mesh_Geometrie_1 ()
bool	Initialize_Mesh_Geometrie_2 ()
void	Load (const MeshCore::MeshKernel &InputMesh, const TopoDS_Shape &CAD_Shape)
	Load the input-shapes. Must be called before running the main program.
bool	MeshFit_Coarse ()
	Determines the local-coordinate-systems of the input-shapes and apply a coordinate transformation to the mesh.
bool	output_best_fit_mesh ()
bool	Perform ()
	Main function of the best-fit-algorithm.
bool	Perform_PointCloud ()
	Main function of the best-fit-algorithm only on point clouds.
bool	PointCloud_Coarse ()
	Determines the center of mass of the point-cloud and translates the shape to the global origin.
bool	ShapeFit_Coarse ()
	Determines the center of mass of the input-shape and translates the shape to the global origin.
	~best_fit ()
Static Public Member Functions
static std::vector < Base::Vector3f >	Comp_Normals (MeshCore::MeshKernel &Mesh)
	Returns a normal-vector of Mesh at the knots with uniform weighting.
static bool	Tesselate_Face (const TopoDS_Face &aface, MeshCore::MeshKernel &mesh, float deflection)
	Computes a triangulation on aface.
static bool	Tesselate_Shape (const TopoDS_Shape &shape, MeshCore::MeshKernel &mesh, float deflection)
	Computes a triangulation on shape.
Public Attributes
TopoDS_Shape	m_Cad
	Input-shape from the function Load.
gp_Vec	m_cad2orig
	Translation-vector from the function ShapeFit_Coarse().
MeshCore::MeshKernel	m_CadMesh
	Triangulated input-shape m_Cad.
std::vector< double >	m_error
	Stores the error-values of m_CadMesh in relative order.
std::vector< TopoDS_Face >	m_LowFaces
	Vector of the preselected-faces for the weighting.
std::vector< std::vector < Base::Vector3f > >	m_LSPnts
	Stores the point-sets computed with the function ANN().
MeshCore::MeshKernel	m_Mesh
	Input-mesh from the function Load.
MeshCore::MeshKernel	m_MeshWork
	A copy of m_Mesh.
std::vector< Base::Vector3f >	m_normals
	Stores the normals of m_CadMesh in relative order.
std::vector< Base::Vector3f >	m_pntCloud_1
std::vector< Base::Vector3f >	m_pntCloud_2
std::vector< Base::Vector3f >	m_pnts
	Stores the knots of m_CadMesh in relative order.
std::vector< double >	m_weights
	Stores the weights computed with the function Comp_Weights().
std::vector< double >	m_weights_loc
	A working-copy of m_weights.

Detailed Description

The main class for the best_fit routine.

It takes a mesh and a Topo_Shape as it's input parameter.

As output, it gives a transformed mesh (rotation + translation) based on a weighted ICP-Algorithm (ICP: Iterative Closed Point) wich fits the Topo_Shape

Definition at line 53 of file best_fit.h.

Constructor & Destructor Documentation

best_fit::best_fit ( )

Definition at line 65 of file best_fit.cpp.

References m_LSPnts.

best_fit::~best_fit ( )

Definition at line 70 of file best_fit.cpp.

Member Function Documentation

double best_fit::ANN ( )

Determines two corresponding point-sets for the ICP-Method using the Nearest-Neighbour-Algorithm.

Definition at line 83 of file best_fit.cpp.

References Base::Builder3D::addSingleLine(), annAllocPt(), annAllocPts(), annClose(), ANNkd_tree::annkSearch(), draftlibs::dxfReader::error(), Py::int, m_LSPnts, m_pntCloud_1, m_pntCloud_2, m_weights, m_weights_loc, and Base::Builder3D::saveToFile().

Referenced by Coarse_correction(), and Perform().

bool best_fit::Coarse_correction ( )

Check and corrects mesh-position by rotating around all coordinate-axes with 180 degree.

Definition at line 396 of file best_fit.cpp.

References ANN(), draftlibs::dxfReader::error(), m_MeshWork, m_pntCloud_2, Base::Matrix4D::setToUnity(), and MeshCore::MeshKernel::Transform().

Referenced by Perform(), and Perform_PointCloud().

std::vector< Base::Vector3f > best_fit::Comp_Normals ( MeshCore::MeshKernel & Mesh ) [static]

Returns a normal-vector of Mesh at the knots with uniform weighting.

Parameters:

Mesh

Input-Mesh

Definition at line 1500 of file best_fit.cpp.

References Base::Builder3D::addSingleArrow(), MeshCore::MeshGeomFacet::Area(), MeshCore::MeshKernel::CountPoints(), MeshCore::MeshKernel::GetFacet(), MeshCore::MeshGeomFacet::GetNormal(), MeshCore::MeshKernel::GetPoint(), Base::Vector3< _Precision >::Normalize(), Base::Builder3D::saveToFile(), Base::Vector3< _Precision >::Set(), Base::Vector3< _Precision >::x, Base::Vector3< _Precision >::y, and Base::Vector3< _Precision >::z.

Referenced by UniGridApprox::CompMeshError(), and UniGridApprox::MeshOffset().

double best_fit::CompTotalError ( MeshCore::MeshKernel & mesh )

Computes error between mesh and the input-shape through intersection along the normal-directions and returns an average-error-value.

Definition at line 1879 of file best_fit.cpp.

References MeshCore::MeshPointIterator::Begin(), MeshCore::MeshKernel::CountPoints(), draftlibs::dxfReader::error(), MeshCore::MeshKernel::GetPoints(), m_CadMesh, m_error, m_normals, MeshCore::MeshPointIterator::More(), MeshCore::MeshAlgorithm::NearestFacetOnRay(), MeshCore::MeshPointIterator::Next(), KDL::sqrt(), and Base::Vector3< _Precision >::z.

double best_fit::CompTotalError ( )

Computes error between the input-shapes through intersection along the normal-directions and returns an average-error-value.

Definition at line 1718 of file best_fit.cpp.

References Base::Builder3D::addSingleArrow(), MeshCore::MeshPointIterator::Begin(), MeshCore::MeshKernel::CountPoints(), MeshCore::MeshKernel::GetPoints(), m_CadMesh, m_error, m_LSPnts, m_Mesh, m_normals, MeshCore::MeshPointIterator::More(), MeshCore::MeshAlgorithm::NearestFacetOnRay(), MeshCore::MeshPointIterator::Next(), Base::Builder3D::saveToFile(), KDL::sqrt(), and Base::Vector3< _Precision >::z.

Referenced by SpringbackCorrection::Perform(), Perform(), and Perform_PointCloud().

bool best_fit::Initialize_Mesh_Geometrie_1 ( )

Definition at line 946 of file best_fit.cpp.

References m_pntCloud_1, and Base::Vector3< _Precision >::Set().

Referenced by CamGui::Cutting::on_BestFitButton_clicked().

bool best_fit::Initialize_Mesh_Geometrie_2 ( )

Definition at line 970 of file best_fit.cpp.

References m_pntCloud_2, and Base::Vector3< _Precision >::Set().

Referenced by CamGui::Cutting::on_BestFitButton_clicked().

void best_fit::Load	(	const MeshCore::MeshKernel &	InputMesh,
		const TopoDS_Shape &	CAD_Shape
	)

Load the input-shapes. Must be called before running the main program.

Parameters:

	InputMesh	Input-mesh
	CAD_Shape	Input-shape

Definition at line 74 of file best_fit.cpp.

References m_Cad, m_Mesh, and m_MeshWork.

Referenced by CamGui::Cutting::on_best_fit_go_button_clicked().

bool best_fit::MeshFit_Coarse ( )

Determines the local-coordinate-systems of the input-shapes and apply a coordinate transformation to the mesh.

Definition at line 1214 of file best_fit.cpp.

References Base::Builder3D::addSingleArrow(), Base::Builder3D::addSinglePoint(), MeshCore::MeshEigensystem::Evaluate(), Base::Matrix4D::inverse(), m_CadMesh, m_MeshWork, Base::Builder3D::saveToFile(), MeshCore::MeshKernel::Transform(), MeshCore::MeshEigensystem::Transform(), draftlibs::fcgeo::v1(), draftlibs::fcgeo::vec(), Base::Vector3< _Precision >::x, Base::Vector3< _Precision >::y, MovieTool::y, and Base::Vector3< _Precision >::z.

Referenced by Perform().

bool best_fit::output_best_fit_mesh ( )

Definition at line 931 of file best_fit.cpp.

References m_pntCloud_2, and MovieTool::y.

Referenced by CamGui::Cutting::on_BestFitButton_clicked().

bool best_fit::Perform ( )

Main function of the best-fit-algorithm.

Definition at line 167 of file best_fit.cpp.

References ANN(), Coarse_correction(), CompTotalError(), MeshCore::MeshKernel::GetPoints(), m_Cad, m_cad2orig, m_CadMesh, m_Mesh, m_MeshWork, m_pntCloud_1, m_pntCloud_2, MeshFit_Coarse(), Base::Matrix4D::setToUnity(), ShapeFit_Coarse(), Tesselate_Shape(), and MeshCore::MeshKernel::Transform().

Referenced by CamGui::Cutting::on_best_fit_go_button_clicked().

bool best_fit::Perform_PointCloud ( )

Main function of the best-fit-algorithm only on point clouds.

Definition at line 264 of file best_fit.cpp.

References Coarse_correction(), CompTotalError(), m_cad2orig, m_CadMesh, m_Mesh, m_MeshWork, m_pntCloud_1, m_pntCloud_2, m_weights, PointCloud_Coarse(), Base::Matrix4D::setToUnity(), and MeshCore::MeshKernel::Transform().

Referenced by CamGui::Cutting::on_BestFitButton_clicked().

bool best_fit::PointCloud_Coarse ( )

Determines the center of mass of the point-cloud and translates the shape to the global origin.

Definition at line 1050 of file best_fit.cpp.

References MeshCore::Approximation::AddPoints(), Base::Builder3D::addSingleArrow(), Base::Builder3D::addSinglePoint(), MeshCore::Approximation::Clear(), MeshCore::PlaneFit::Fit(), MeshCore::PlaneFit::GetDirU(), MeshCore::PlaneFit::GetDirV(), MeshCore::Approximation::GetGravity(), MeshCore::PlaneFit::GetNormal(), Base::Matrix4D::inverse(), m_cad2orig, m_pntCloud_1, m_pntCloud_2, Base::Builder3D::saveToFile(), draftlibs::fcgeo::v1(), draftlibs::fcgeo::vec(), Base::Vector3< _Precision >::x, Base::Vector3< _Precision >::y, MovieTool::y, and Base::Vector3< _Precision >::z.

Referenced by Perform_PointCloud().

bool best_fit::ShapeFit_Coarse ( )

Determines the center of mass of the input-shape and translates the shape to the global origin.

Definition at line 1311 of file best_fit.cpp.

References m_Cad, and m_cad2orig.

Referenced by Perform().

bool best_fit::Tesselate_Face	(	const TopoDS_Face &	aface,
		MeshCore::MeshKernel &	mesh,
		float	deflection
	)			`[static]`

Computes a triangulation on aface.

Parameters:

	aface	specifies the face to be tesselated
	mesh	output-mesh to store the computed triangulation
	deflection	parameter wich determines the accuracy of the triangulation

Definition at line 1335 of file best_fit.cpp.

References MeshCore::MeshBuilder::AddFacet(), MeshCore::MeshBuilder::Finish(), MeshCore::MeshBuilder::Initialize(), and Base::Vector3< _Precision >::Set().

Referenced by UniGridApprox::CompMeshError().

bool best_fit::Tesselate_Shape	(	const TopoDS_Shape &	shape,
		MeshCore::MeshKernel &	mesh,
		float	deflection
	)			`[static]`

Computes a triangulation on shape.

Parameters:

	shape	specifies the shape to be tesselated
	mesh	output-mesh to store the computed triangulation
	deflection	parameter wich determines the accuracy of the triangulation

Definition at line 1402 of file best_fit.cpp.

References MeshCore::MeshDefinitions::_fMinPointDistanceD1, MeshCore::MeshBuilder::AddFacet(), MeshCore::MeshBuilder::Finish(), MeshCore::MeshBuilder::Initialize(), and Base::Vector3< _Precision >::Set().

Referenced by Deviation::Compute(), SpringbackCorrection::Init(), SpringbackCorrection::Load(), Perform(), SpringbackCorrection::SpringbackCorrection(), and tess_shape().