Helper Functions

General helper functions for mesh processing. More...

Functions
int	Helper::get_vert_valence (const MeshType &a_Mesh, const VertexHandle &a_VertexHandle)
	Get the vert valence object.
bool	Helper::is_vert_3_valence (const MeshType &a_Mesh, const VertexHandle &a_VertexHandle)
	Checks if the valence of the given vertex is 3.
bool	Helper::is_vert_4_valence (const MeshType &a_Mesh, const VertexHandle &a_VertexHandle)
	Checks if the valence of the given vertex is 4.
bool	Helper::is_vert_5_valence (const MeshType &a_Mesh, const VertexHandle &a_VertexHandle)
	Checks if the valence of the given vertex is 5.
bool	Helper::are_verts_of_face_all_4_valence (const MeshType &a_Mesh, const FaceHandle &a_FaceHandle)
	Checks if all the vertices of the given face are 4-valence.
bool	Helper::is_vert_in_face (const MeshType &a_Mesh, const FaceHandle &a_FaceHandle, const VertexHandle &a_VertHandle)
	Check if the given vertex is one of the vertices in face.
bool	Helper::is_polar_surrounding_vert (const MeshType &a_Mesh, const VertexHandle &a_VertexHandle, bool only_regular, int max_valence)
	Checks if the given vertex could be a polar surrounding vertex. A polar patch must be surrounded by quads. Check if the surrounding faces are all quads except the two triangles that belong to the polar point.
bool	Helper::is_polar (const MeshType &a_Mesh, const VertexHandle &a_VertexHandle, bool only_regular, int max_valence, int surrounding_max_valence)
	Checks if the given vertex could be a polar point. A polar point is defined as a vertex that is surrounded by triangles. The neighborhood around the triangles should be all quads. Also checks if the surrounding vertices are also valid polar surrounding vertices.
VertexHandle	Helper::find_polar_vertex (const MeshType &mesh, VertexHandle outerVH)
	Given a vertex that is potintially a vertex surrounding a polar point, find the polar point vertex.
void	Helper::set_vert_vector_to_default (const int a_Size, std::vector< VertexHandle > &a_VertexHandles)
	Set the vert vector to default object.
std::vector< FaceHandle >	Helper::get_faces_around_vert_counterclock (const MeshType &a_Mesh, const VertexHandle &a_VertHandle)
	Get the faces around vert counterclock object.
std::vector< FaceHandle >	Helper::get_two_layers_faces_around_vert (const MeshType &a_Mesh, const VertexHandle &a_VertHandle)
	Get first and second layers of faces aroumnd the vert (unordered) ex:
std::vector< VertexHandle >	Helper::get_two_layers_verts_around_vert (const MeshType &a_Mesh, const VertexHandle &a_VertHandle)
	Get first and second layers of verts around the given vert (unordered). The layout does not need to be regular.
std::vector< VertexHandle >	Helper::get_first_layers_verts_around_vert (const MeshType &a_Mesh, const VertexHandle &a_VertHandle)
	Get first layer of verts around the given vert. The layout does not need to be regular.
std::vector< VertexHandle >	Helper::get_surrounding_verts (const MeshType &a_Mesh, const VertexHandle &a_VertHandle)
	Get surrounding verts around the given vert (unordered)
std::vector< FaceHandle >	Helper::get_second_layer_faces_around_vert (const MeshType &a_Mesh, const VertexHandle &a_VertHandle)
	Get second layer of faces around the given vert (unordered). The layout does not need to be regular.
bool	Helper::is_marked (const MeshType &a_Mesh, const VertexHandle &a_VertHandle)
	Check if the given vertex is marked. A marked vertex is determined by the bool named property "marked_status" on a vertex.
void	Helper::mark_vert (MeshType &a_Mesh, const VertexHandle &a_VertHandle)
	Mark the given vertex. A marked vertex is determined by the bool named property "marked_status" on a vertex.
bool	Helper::is_triangle (const MeshType &a_Mesh, const FaceHandle &a_FaceHandle)
	Check if the given face is a triangle.
bool	Helper::is_quad (const MeshType &a_Mesh, const FaceHandle &a_FaceHandle)
	Check if the given face is a quad.
bool	Helper::is_pentagon (const MeshType &a_Mesh, const FaceHandle &a_FaceHandle)
	Check if the given face is a pentagon.
bool	Helper::is_hexagon (const MeshType &a_Mesh, const FaceHandle &a_FaceHandle)
	Check if the given face is a hexagon.
std::vector< FaceHandle >	Helper::init_neighbor_faces (const MeshType &a_Mesh, const FaceHandle &a_FaceHandle)
	Initialize the neighbor faces of the given face.
bool	Helper::has_7_neighbor_faces (const std::vector< FaceHandle > &a_NBFaceHandles)
	Check if the number of neighbor faces is 7.
bool	Helper::has_8_neighbor_faces (const std::vector< FaceHandle > &a_NBFaceHandles)
	Check if the number of neighbor faces is 8.
bool	Helper::has_9_neighbor_faces (const std::vector< FaceHandle > &a_NBFaceHandles)
	Check if the number of neighbor faces is 9.
bool	Helper::are_faces_all_quads (const MeshType &a_Mesh, const std::vector< FaceHandle > &a_FaceHandles)
	Check if all the given faces are quads.
bool	Helper::is_only_surrounded_by_quad (const MeshType &a_Mesh, const VertexHandle &a_VertHandle)
	Check if the given vertex is only surrounded by quads.
int	Helper::get_num_of_verts_for_face (const MeshType &a_Mesh, const FaceHandle &a_FaceHandle)
	Get the number of vertices for the given face.
int	Helper::get_num_of_neighbor_faces (const std::vector< FaceHandle > &a_NBFaceHandles)
	Get the number of neighbor faces for the given neighborhood.
std::vector< VertexHandle >	Helper::get_verts_of_face (const MeshType &a_Mesh, const FaceHandle &a_FaceHandle)
	Get the vertices of the given face.
std::vector< VertexHandle >	Helper::get_verts_of_faces (const MeshType &a_Mesh, const std::vector< FaceHandle > &a_FaceHandles)
	Get the vertices of the given faces.
int	Helper::num_of_quads (const MeshType &a_Mesh, std::vector< FaceHandle > a_FaceHandles)
	Given a neighborhood of faces, count how many quads are there.
int	Helper::num_of_triangles (const MeshType &a_Mesh, std::vector< FaceHandle > a_FaceHandles)
	Given a neighborhood of faces, count how many triangles are there.
std::vector< FaceHandle >	Helper::get_second_layer_faces_around_face (const MeshType &a_Mesh, const FaceHandle &a_FaceHandle)
	Get the second layer of faces around the given face (unordered). Output faces do not include the first layer faces.
bool	Helper::is_marked (const MeshType &a_Mesh, const FaceHandle &a_FaceHandle)
	Check if the given face is marked. A marked face is determined by the bool named property "marked_status" on a face.
void	Helper::mark_face_verts (MeshType &a_Mesh, const FaceHandle &a_FaceHandle)
	Mark all the vertices of the given face. A marked vertex is determined by the bool named property "marked_status" on a vertex.
void	Helper::mark_face (MeshType &a_Mesh, const FaceHandle &a_FaceHandle)
	Mark the given face. A marked face is determined by the bool named property "marked_status" on a face.
Vec3d	Helper::verthandles_to_point_vec (const MeshType &a_Mesh, const VertexHandle &a_VertHandle)
	Convert a vertex handle to a 3D point vector.
Matrix	Helper::verthandles_to_points_mat (const MeshType &a_Mesh, const std::vector< VertexHandle > &a_VertHandle)
	Convert a vector of vertex handles to a Matrix of 3D points.
Patch	Helper::points_mat_to_patch (const Matrix &a_PointMat)
	Convert a Matrix of 3D points to a Patch.
Patch	Helper::points_mat_to_patch (const int a_PatchDegU, const int a_PatchDegV, const Matrix &a_PointMat)
	Convert a Matrix of 3D points to a Patch. The U and V degree of the patch are the same.
Patch	Helper::points_mat_to_patch (const int a_PatchDegU, const int a_PatchDegV, const std::string a_Group, const Matrix &a_PointMat)
	Convert a Matrix of 3D points to a Patch.
Patch	Helper::points_mat_to_patch (const int a_PatchDegU, const int a_PatchDegV, const std::string a_Group, const Matrix &a_PointMat, const int a_StartIndex)
	Convert a Matrix of 3D points to a Patch.
std::vector< Patch >	Helper::points_mat_to_patches (const int a_NumOfPatch, const std::string a_Group, const Matrix &a_PointMat)
	Convert a Matrix of 3D points to multiple Patch es.
std::vector< Patch >	Helper::points_mat_to_patches (const int a_PatchDegU, const int a_PatchDegV, const std::string a_Group, const Matrix &a_PointMat)
	Convert a Matrix of 3D points to multiple Patch es.
template<typename T>
std::vector< T >	Helper::duplicate_vector (int a_Times, const std::vector< T > &a_Vector)
	Duplicate a vector multiple times.

Detailed Description

General helper functions for mesh processing.

Function Documentation

are_faces_all_quads()

bool Helper::are_faces_all_quads	(	const MeshType &	a_Mesh,
		const std::vector< FaceHandle > &	a_FaceHandles )

Check if all the given faces are quads.

Parameters

a_Mesh	The mesh containing the faces
a_FaceHandles	The vector of face handles

Returns

true if all the faces are quads

are_verts_of_face_all_4_valence()

bool Helper::are_verts_of_face_all_4_valence	(	const MeshType &	a_Mesh,
		const FaceHandle &	a_FaceHandle )

Checks if all the vertices of the given face are 4-valence.

Parameters

a_Mesh	The mesh containing the face
a_FaceHandle	The face handle

Returns

true if all the vertices of the face are 4-valence

duplicate_vector()

template<typename T>

std::vector< T > Helper::duplicate_vector	(	int	a_Times,
		const std::vector< T > &	a_Vector )

Duplicate a vector multiple times.

Template Parameters

T	The type of the vector elements

Parameters

a_Times	The number of times to duplicate the vector
a_Vector	The vector to be duplicated

Returns

The duplicated vector

find_polar_vertex()

VertexHandle Helper::find_polar_vertex	(	const MeshType &	mesh,
		VertexHandle	outerVH )

Given a vertex that is potintially a vertex surrounding a polar point, find the polar point vertex.

Parameters

mesh	The mesh containing the vertex
outerVH	The vertex handle of the potential polar surrounding vertex

Returns

VertexHandle The vertex handle of the polar point. Invalid handle if not found.

get_faces_around_vert_counterclock()

std::vector< FaceHandle > Helper::get_faces_around_vert_counterclock	(	const MeshType &	a_Mesh,
		const VertexHandle &	a_VertHandle )

Get the faces around vert counterclock object.

Parameters

a_Mesh	The mesh containing the vertex
a_VertHandle	The vertex handle

Returns

all the facehandles around the given vertexhandle

get_first_layers_verts_around_vert()

std::vector< VertexHandle > Helper::get_first_layers_verts_around_vert	(	const MeshType &	a_Mesh,
		const VertexHandle &	a_VertHandle )

Get first layer of verts around the given vert. The layout does not need to be regular.

ex:

1 - 0 - 7   x: Given point(not included)
|   |   |   0-7: Verts to get
2 - x - 6
|   |   |
3 - 4 - 5

Parameters

a_Mesh	The mesh containing the vertex
a_VertHandle	The vertex handle

Returns

All the vertexhandles in the first layer around the given vertexhandle

get_num_of_neighbor_faces()

int Helper::get_num_of_neighbor_faces

(

const std::vector< FaceHandle > &

a_NBFaceHandles

)

Get the number of neighbor faces for the given neighborhood.

Parameters

a_NBFaceHandles

The vector of neighbor face handles

Returns

the number of neighbor faces

get_num_of_verts_for_face()

int Helper::get_num_of_verts_for_face	(	const MeshType &	a_Mesh,
		const FaceHandle &	a_FaceHandle )

Get the number of vertices for the given face.

Parameters

a_Mesh	The mesh containing the face
a_FaceHandle	The face handle

Returns

the number of vertices for the face

get_second_layer_faces_around_face()

std::vector< FaceHandle > Helper::get_second_layer_faces_around_face	(	const MeshType &	a_Mesh,
		const FaceHandle &	a_FaceHandle )

Get the second layer of faces around the given face (unordered). Output faces do not include the first layer faces.

ex:

o - o - o - o - o - o
| x | x | x | x | x |
o - o - o - o - o - o
| x |   |   |   | x |
o - o - o - o - o - o  f: Given face
| x |   | f |   | x |  x: Faces to get
o - o - o - o - o - o
| x |   |   |   | x |
o - o - o - o - o - o
| x | x | x | x | x |
o - o - o - o - o - o

Parameters

a_Mesh	The mesh containing the face
a_FaceHandle	The face handle

Returns

The vector of face handles in the second layer around the given facehandle

get_second_layer_faces_around_vert()

std::vector< FaceHandle > Helper::get_second_layer_faces_around_vert	(	const MeshType &	a_Mesh,
		const VertexHandle &	a_VertHandle )

Get second layer of faces around the given vert (unordered). The layout does not need to be regular.

ex:

o - o - o - o - o
| x | x | x | x |
o - o - o - o - o
| x |   |   | x |
o - o - v - o - o  v: Given point
| x |   |   | x |  x: Faces to get
o - o - o - o - o
| x | x | x | x |
o - o - o - o - o

Parameters

a_Mesh	The mesh containing the vertex
a_VertHandle	The vertex handle

Returns

All the facehandles in the second layer around the given vertexhandle

get_surrounding_verts()

std::vector< VertexHandle > Helper::get_surrounding_verts	(	const MeshType &	a_Mesh,
		const VertexHandle &	a_VertHandle )

Get surrounding verts around the given vert (unordered)

Parameters

a_Mesh	The mesh containing the vertex
a_VertHandle	The vertex handle

Returns

All the vertexhandles surrounding the given vertexhandle

get_two_layers_faces_around_vert()

std::vector< FaceHandle > Helper::get_two_layers_faces_around_vert	(	const MeshType &	a_Mesh,
		const VertexHandle &	a_VertHandle )

Get first and second layers of faces aroumnd the vert (unordered) ex:

o - o - o - o - o
|   |   |   |   |
o - o - o - o - o
|   |   |   |   |
o - o - v - o - o
|   |   |   |   |
o - o - o - o - o
|   |   |   |   |
o - o - o - o - o

Parameters

a_Mesh	The mesh containing the vertex
a_VertHandle	The vertex handle

Returns

All the facehandles in the two layers around the given vertexhandle

get_two_layers_verts_around_vert()

std::vector< VertexHandle > Helper::get_two_layers_verts_around_vert	(	const MeshType &	a_Mesh,
		const VertexHandle &	a_VertHandle )

Get first and second layers of verts around the given vert (unordered). The layout does not need to be regular.

ex:

o - o - o - o - o
|   |   |   |   |
o - o - o - o - o
|   |   |   |   |
o - o - v - o - o  v: Given point(included)
|   |   |   |   |  o: Verts to get
o - o - o - o - o
|   |   |   |   |
o - o - o - o - o

Parameters

a_Mesh	The mesh containing the vertex
a_VertHandle	The vertex handle

Returns

All the vertexhandles in the two layers around the given vertexhandle

get_vert_valence()

int Helper::get_vert_valence	(	const MeshType &	a_Mesh,
		const VertexHandle &	a_VertexHandle )

Get the vert valence object.

Parameters

a_Mesh	The mesh containing the vertex
a_VertexHandle	The vertex handle

Returns

the valence of the vertex

get_verts_of_face()

std::vector< VertexHandle > Helper::get_verts_of_face	(	const MeshType &	a_Mesh,
		const FaceHandle &	a_FaceHandle )

Get the vertices of the given face.

Parameters

a_Mesh	The mesh containing the face
a_FaceHandle	The face handle

Returns

The vector of vertex handles of the face

get_verts_of_faces()

std::vector< VertexHandle > Helper::get_verts_of_faces	(	const MeshType &	a_Mesh,
		const std::vector< FaceHandle > &	a_FaceHandles )

Get the vertices of the given faces.

Parameters

a_Mesh	The mesh containing the faces
a_FaceHandles	The vector of face handles

Returns

The vector of vertex handles of the faces (no duplicate)

has_7_neighbor_faces()

bool Helper::has_7_neighbor_faces

(

const std::vector< FaceHandle > &

a_NBFaceHandles

)

Check if the number of neighbor faces is 7.

Parameters

a_NBFaceHandles

The vector of neighbor face handles

Returns

true if the number of neighbor faces is 7

has_8_neighbor_faces()

bool Helper::has_8_neighbor_faces

(

const std::vector< FaceHandle > &

a_NBFaceHandles

)

Check if the number of neighbor faces is 8.

Parameters

a_NBFaceHandles

The vector of neighbor face handles

Returns

true if the number of neighbor faces is 8

has_9_neighbor_faces()

bool Helper::has_9_neighbor_faces

(

const std::vector< FaceHandle > &

a_NBFaceHandles

)

Check if the number of neighbor faces is 9.

Parameters

a_NBFaceHandles

The vector of neighbor face handles

Returns

true if the number of neighbor faces is 9

init_neighbor_faces()

std::vector< FaceHandle > Helper::init_neighbor_faces	(	const MeshType &	a_Mesh,
		const FaceHandle &	a_FaceHandle )

Initialize the neighbor faces of the given face.

Parameters

a_Mesh	The mesh containing the face
a_FaceHandle	The face handle

Returns

The vector of neighbor face handles

is_hexagon()

bool Helper::is_hexagon	(	const MeshType &	a_Mesh,
		const FaceHandle &	a_FaceHandle )

Check if the given face is a hexagon.

Parameters

a_Mesh	The mesh containing the face
a_FaceHandle	The face handle

Returns

true if the face is a hexagon

is_marked() [1/2]

bool Helper::is_marked	(	const MeshType &	a_Mesh,
		const FaceHandle &	a_FaceHandle )

Check if the given face is marked. A marked face is determined by the bool named property "marked_status" on a face.

Parameters

a_Mesh	The mesh containing the face
a_FaceHandle	The face handle

Returns

true if the face is marked

is_marked() [2/2]

bool Helper::is_marked	(	const MeshType &	a_Mesh,
		const VertexHandle &	a_VertHandle )

Check if the given vertex is marked. A marked vertex is determined by the bool named property "marked_status" on a vertex.

Parameters

a_Mesh	The mesh containing the vertex
a_VertHandle	The vertex handle

Returns

true if the vertex is marked

is_only_surrounded_by_quad()

bool Helper::is_only_surrounded_by_quad	(	const MeshType &	a_Mesh,
		const VertexHandle &	a_VertHandle )

Check if the given vertex is only surrounded by quads.

Parameters

a_Mesh	The mesh containing the vertex
a_VertHandle	The vertex handle

Returns

true if the vertex is only surrounded by quads

is_pentagon()

bool Helper::is_pentagon	(	const MeshType &	a_Mesh,
		const FaceHandle &	a_FaceHandle )

Check if the given face is a pentagon.

Parameters

a_Mesh	The mesh containing the face
a_FaceHandle	The face handle

Returns

true if the face is a pentagon

is_polar()

bool Helper::is_polar	(	const MeshType &	a_Mesh,
		const VertexHandle &	a_VertexHandle,
		bool	only_regular,
		int	max_valence,
		int	surrounding_max_valence )

Checks if the given vertex could be a polar point. A polar point is defined as a vertex that is surrounded by triangles. The neighborhood around the triangles should be all quads. Also checks if the surrounding vertices are also valid polar surrounding vertices.

Parameters

a_Mesh	The mesh containing the vertex
a_VertexHandle	The vertex handle of the potential polar point
only_regular	If true, only 4-valence surrounding polar vertex will be considered
max_valence	The maximum valence of the polar vertex. The minimum valence is 3.
surrounding_max_valence	The maximum valence of the surrounding vertex.

Returns

true

false

is_polar_surrounding_vert()

bool Helper::is_polar_surrounding_vert	(	const MeshType &	a_Mesh,
		const VertexHandle &	a_VertexHandle,
		bool	only_regular,
		int	max_valence )

Checks if the given vertex could be a polar surrounding vertex. A polar patch must be surrounded by quads. Check if the surrounding faces are all quads except the two triangles that belong to the polar point.

Parameters

a_Mesh	The mesh containing the vertex
a_VertexHandle	The vertex handle of the potential polar surrounding vertex
only_regular	If true, only 4-valence vertex will be considered
max_valence	The maximum valence of the vertex. The minimum valence is 3.

Returns

true

false

is_quad()

bool Helper::is_quad	(	const MeshType &	a_Mesh,
		const FaceHandle &	a_FaceHandle )

Check if the given face is a quad.

Parameters

a_Mesh	The mesh containing the face
a_FaceHandle	The face handle

Returns

true if the face is a quad

is_triangle()

bool Helper::is_triangle	(	const MeshType &	a_Mesh,
		const FaceHandle &	a_FaceHandle )

Check if the given face is a triangle.

Parameters

a_Mesh	The mesh containing the face
a_FaceHandle	The face handle

Returns

true if the face is a triangle

is_vert_3_valence()

bool Helper::is_vert_3_valence	(	const MeshType &	a_Mesh,
		const VertexHandle &	a_VertexHandle )

Checks if the valence of the given vertex is 3.

Parameters

a_Mesh	The mesh containing the vertex
a_VertexHandle	The vertex handle

Returns

true if the valence is 3

is_vert_4_valence()

bool Helper::is_vert_4_valence	(	const MeshType &	a_Mesh,
		const VertexHandle &	a_VertexHandle )

Checks if the valence of the given vertex is 4.

Parameters

a_Mesh	The mesh containing the vertex
a_VertexHandle	The vertex handle

Returns

true if the valence is 4

is_vert_5_valence()

bool Helper::is_vert_5_valence	(	const MeshType &	a_Mesh,
		const VertexHandle &	a_VertexHandle )

Checks if the valence of the given vertex is 5.

Parameters

a_Mesh	The mesh containing the vertex
a_VertexHandle	The vertex handle

Returns

true if the valence is 5

is_vert_in_face()

bool Helper::is_vert_in_face	(	const MeshType &	a_Mesh,
		const FaceHandle &	a_FaceHandle,
		const VertexHandle &	a_VertHandle )

Check if the given vertex is one of the vertices in face.

Parameters

a_Mesh	The mesh containing the face and vertex
a_FaceHandle	The face handle
a_VertHandle	The vertex handle

Returns

true if the vertex is in the face, false otherwise

mark_face()

void Helper::mark_face	(	MeshType &	a_Mesh,
		const FaceHandle &	a_FaceHandle )

Mark the given face. A marked face is determined by the bool named property "marked_status" on a face.

Parameters

a_Mesh	The mesh containing the face
a_FaceHandle	The face handle

mark_face_verts()

void Helper::mark_face_verts	(	MeshType &	a_Mesh,
		const FaceHandle &	a_FaceHandle )

Mark all the vertices of the given face. A marked vertex is determined by the bool named property "marked_status" on a vertex.

Parameters

a_Mesh	The mesh containing the face
a_FaceHandle	The face handle

mark_vert()

void Helper::mark_vert	(	MeshType &	a_Mesh,
		const VertexHandle &	a_VertHandle )

Mark the given vertex. A marked vertex is determined by the bool named property "marked_status" on a vertex.

Parameters

a_Mesh	The mesh containing the vertex
a_VertHandle	The vertex handle

num_of_quads()

int Helper::num_of_quads	(	const MeshType &	a_Mesh,
		std::vector< FaceHandle >	a_FaceHandles )

Given a neighborhood of faces, count how many quads are there.

Parameters

a_Mesh	The mesh containing the faces
a_FaceHandles	The vector of face handles

Returns

the number of quads in the neighborhood

num_of_triangles()

int Helper::num_of_triangles	(	const MeshType &	a_Mesh,
		std::vector< FaceHandle >	a_FaceHandles )

Given a neighborhood of faces, count how many triangles are there.

Parameters

a_Mesh	The mesh containing the faces
a_FaceHandles	The vector of face handles

Returns

the number of triangles in the neighborhood

points_mat_to_patch() [1/4]

Patch Helper::points_mat_to_patch	(	const int	a_PatchDegU,
		const int	a_PatchDegV,
		const Matrix &	a_PointMat )

Convert a Matrix of 3D points to a Patch. The U and V degree of the patch are the same.

Parameters

a_PatchDegU	The degree of the patch in U direction
a_PatchDegV	The degree of the patch in V direction
a_PointMat	The matrix of 3D points. Each row is a 3D point.

Returns

Patch

points_mat_to_patch() [2/4]

Patch Helper::points_mat_to_patch	(	const int	a_PatchDegU,
		const int	a_PatchDegV,
		const std::string	a_Group,
		const Matrix &	a_PointMat )

Convert a Matrix of 3D points to a Patch.

Parameters

a_PatchDegU	The degree of the patch in U direction
a_PatchDegV	The degree of the patch in V direction
a_Group	The group name of the patch
a_PointMat	The matrix of 3D points. Each row is a 3D point.

Returns

Patch

points_mat_to_patch() [3/4]

Patch Helper::points_mat_to_patch	(	const int	a_PatchDegU,
		const int	a_PatchDegV,
		const std::string	a_Group,
		const Matrix &	a_PointMat,
		const int	a_StartIndex )

Convert a Matrix of 3D points to a Patch.

Parameters

a_PatchDegU	The degree of the patch in U direction
a_PatchDegV	The degree of the patch in V direction
a_Group	The group name of the patch
a_PointMat	The matrix of 3D points.
a_StartIndex	The start index of the points in the matrix.

Returns

Patch

points_mat_to_patch() [4/4]

Patch Helper::points_mat_to_patch

(

const Matrix &

a_PointMat

)

Convert a Matrix of 3D points to a Patch.

Parameters

a_PointMat

Returns

Patch

points_mat_to_patches() [1/2]

std::vector< Patch > Helper::points_mat_to_patches	(	const int	a_NumOfPatch,
		const std::string	a_Group,
		const Matrix &	a_PointMat )

Convert a Matrix of 3D points to multiple Patch es.

Parameters

a_NumOfPatch	The number of patches
a_Group	The group name of the patches
a_PointMat	The matrix of 3D points. Each row is a 3D point.

Returns

The vector of patches

points_mat_to_patches() [2/2]

std::vector< Patch > Helper::points_mat_to_patches	(	const int	a_PatchDegU,
		const int	a_PatchDegV,
		const std::string	a_Group,
		const Matrix &	a_PointMat )

Convert a Matrix of 3D points to multiple Patch es.

Parameters

a_PatchDegU	The degree of the patch in U direction
a_PatchDegV	The degree of the patch in V direction
a_Group	The group name of the patches
a_PointMat	The matrix of 3D points. Each row is a 3D point.

Returns

The vector of patches

set_vert_vector_to_default()

void Helper::set_vert_vector_to_default	(	const int	a_Size,
		std::vector< VertexHandle > &	a_VertexHandles )

Set the vert vector to default object.

Parameters

a_Size	The size of the vector to be initialized to.
a_VertexHandles	The vertex handle vector to be initialized.

verthandles_to_point_vec()

Vec3d Helper::verthandles_to_point_vec	(	const MeshType &	a_Mesh,
		const VertexHandle &	a_VertHandle )

Convert a vertex handle to a 3D point vector.

Parameters

a_Mesh	The mesh containing the vertex
a_VertHandle	The vertex handle

Returns

Vec3d The 3D point vector that is a type alias for std::vector<double>

verthandles_to_points_mat()

Matrix Helper::verthandles_to_points_mat	(	const MeshType &	a_Mesh,
		const std::vector< VertexHandle > &	a_VertHandle )

Convert a vector of vertex handles to a Matrix of 3D points.

Parameters

a_Mesh	The mesh containing the vertices
a_VertHandle	The vector of vertex handles

Returns

Matrix The matrix of 3D points.