A child mesh. More...

#include <SubMesh.hh>

Public Types
enum	PrimitiveType { POINTS , LINES , LINESTRIPS , TRIANGLES , TRIFANS , TRISTRIPS }
	An enumeration of the geometric mesh primitives. More...

Public Member Functions
	SubMesh ()
	Constructor.

	SubMesh (const std::string &_name)
	Constructor.

virtual	~SubMesh ()
	Destructor.

void	AddIndex (const unsigned int _index)
	Add an index to the mesh.

void	AddNodeAssignment (const unsigned int _vertex, const unsigned int _node, const float _weight)
	Add a vertex - skeleton node assignment.

void	AddNormal (const double _x, const double _y, const double _z)
	Add a normal to the mesh.

void	AddNormal (const gz::math::Vector3d &_n)
	Add a normal to the mesh.

void	AddTexCoord (const double _u, const double _v)
	Add a texture coord to the mesh. If multiple texture coordinate sets exist, this function adds it to the first texture coordinate set in the submesh. If no previous texture coordinates exist, it is added to set 0.

void	AddTexCoord (const gz::math::Vector2d &_uv)
	Add a texture coordinate to the mesh. If multiple texture coordinate sets exist, this function adds it to the first texture coordinate set in the submesh. If no previous texture coordinates exist, it is added to set 0.

void	AddTexCoordBySet (const gz::math::Vector2d &_uv, unsigned int _setIndex)
	Add a texture coord to a texture coordinate set of the mesh.

void	AddTexCoordBySet (double _u, double _v, unsigned int _setIndex)
	Add a texture coord to a texture coordinate set of the mesh.

void	AddVertex (const double _x, const double _y, const double _z)
	Add a vertex to the mesh.

void	AddVertex (const gz::math::Vector3d &_v)
	Add a vertex to the mesh.

void	Center (const gz::math::Vector3d &_center=gz::math::Vector3d::Zero)
	Move the center of the submesh to the given coordinate. This will move all the vertices.

void	FillArrays (double _vertArr, int _indexndArr) const
	Put all the data into flat arrays.

void	GenSphericalTexCoord (const gz::math::Vector3d &_center)
	Generate texture coordinates using spherical projection from center.

void	GenSphericalTexCoordBySet (const gz::math::Vector3d &_center, unsigned int _setIndex)
	Generate texture coordinates for a texture coordinate set using spherical projection from center.

std::optional< unsigned int >	GetMaterialIndex () const
	Get the material index.

bool	HasNodeAssignment (const unsigned int _index) const
	Return true if this submesh has the node assignment with the given index.

bool	HasNormal (const unsigned int _index) const
	Return true if this submesh has the normal with the given index.

bool	HasTexCoord (const unsigned int _index) const
	Return true if this submesh has the texture coordinate with the given index. If multiple texture coordinate sets exist, this function checks the first texture coordinate set in the submesh, which by default is set 0 unless AddTexCoordBySet is called with a different set index number the first time a texture coordinate is added.

bool	HasTexCoordBySet (unsigned int _index, unsigned int _setIndex) const
	Return true if this submesh has the texture coordinate with the given index in a texture coordinate set.

bool	HasVertex (const gz::math::Vector3d &_v) const
	Return true if this submesh has the vertex.

bool	HasVertex (const unsigned int _index) const
	Return true if this submesh has the vertex with the given index.

int	Index (const unsigned int _index) const
	Get an index value from the index array.

unsigned int	IndexCount () const
	Return the number of indices.

int	IndexOfVertex (const gz::math::Vector3d &_v) const
	Get the index of the vertex.

const unsigned int *	IndexPtr () const
	Get the raw index pointer. This is unsafe, it is the caller's responsibility to ensure it's not indexed out of bounds. The valid range is [0; IndexCount())

gz::math::Vector3d	Max () const
	Get the maximum X, Y, Z values from all the vertices.

unsigned int	MaxIndex () const
	Get the highest value in the index array.

gz::math::Vector3d	Min () const
	Get the minimum X, Y, Z values from all the vertices.

std::string	Name () const
	Get the name of this mesh.

NodeAssignment	NodeAssignmentByIndex (const unsigned int _index) const
	Get a vertex - skeleton node assignment.

unsigned int	NodeAssignmentsCount () const
	Get the number of vertex-skeleton node assignments.

gz::math::Vector3d	Normal (const unsigned int _index) const
	Get a normal.

unsigned int	NormalCount () const
	Return the number of normals.

void	RecalculateNormals ()
	Recalculate all the normals.

void	Scale (const double &_factor)
	Scale all vertices by _factor.

void	Scale (const gz::math::Vector3d &_factor)
	Scale all vertices by _factor.

void	SetIndex (const unsigned int _index, const unsigned int _i)
	Set an index.

void	SetMaterialIndex (const unsigned int _index)
	Set the material index. Relates to the parent mesh material list.

void	SetName (const std::string &_name)
	Set the name of this mesh.

void	SetNormal (const unsigned int _index, const gz::math::Vector3d &_n)
	Set a normal.

void	SetPrimitiveType (PrimitiveType _type)
	Set the primitive type.

void	SetTexCoord (const unsigned int _index, const gz::math::Vector2d &_uv)
	Set a texture coordinate. If multiple texture coordinate sets exist, this function sets the texture coordinate in the first texture coordinate set in the submesh.

void	SetTexCoordBySet (unsigned int _index, const gz::math::Vector2d &_uv, unsigned int _setIdex)
	Set a texture coordinate for a texture coordinate set.

void	SetVertex (const unsigned int _index, const gz::math::Vector3d &_v)
	Set a vertex.

PrimitiveType	SubMeshPrimitiveType () const
	Get the primitive type.

gz::math::Vector2d	TexCoord (const unsigned int _index) const
	Get a texture coordinate.

gz::math::Vector2d	TexCoordBySet (unsigned int _index, unsigned int _setIndex) const
	Get a texture coordinate for a texture coordinate set.

unsigned int	TexCoordCount () const
	Return the number of texture coordinates. If multiple texture coordinate sets exist, this function checks the first texture coordinate set in the submesh, which by default is set 0, unless AddTexCoordBySet is called with a different set index number the first time a texture coordinate is added.

unsigned int	TexCoordCountBySet (unsigned int _setIndex) const
	Return the number of texture coordinates for a texture coordinate set.

unsigned int	TexCoordSetCount () const
	Return the number of texture coordinate sets.

void	Translate (const gz::math::Vector3d &_vec)
	Move all vertices by _vec.

gz::math::Vector3d	Vertex (const unsigned int _index) const
	Get a vertex.

unsigned int	VertexCount () const
	Get the number of vertices.

const gz::math::Vector3d *	VertexPtr () const
	Get the raw vertex pointer. This is unsafe, it is the caller's responsibility to ensure it's not indexed out of bounds. The valid range is [0; VertexCount())

double	Volume () const
	Compute the volume of this submesh. The primitive type must be TRIANGLES.

Detailed Description

A child mesh.

Member Enumeration Documentation

◆ PrimitiveType

enum PrimitiveType

An enumeration of the geometric mesh primitives.

Enumerator
POINTS	Point. 1 vertex per point.
LINES	Line. 2 vertices per line.
LINESTRIPS	Connected lines. 2 vertices for the first line and every vertex specified afterwards creates a new line.
TRIANGLES	Triangle type. 3 vertices per triangle.
TRIFANS	Connected triangle in fan shape. 3 vertices for the first triangle and every vertex specified afterwards creates a new triangle.
TRISTRIPS	Connected triangle. 3 vertices for the first triangle and every vertex specified afterwards creates a new triangle.

Constructor & Destructor Documentation

◆ SubMesh() [1/2]

SubMesh ( )

Constructor.

◆ SubMesh() [2/2]

SubMesh ( const std::string & _name )

explicit

Constructor.

Parameters

_name Name of the submesh.

◆ ~SubMesh()

virtual ~SubMesh ( )

virtual

Destructor.

Member Function Documentation

◆ AddIndex()

void AddIndex ( const unsigned int _index )

Add an index to the mesh.

Parameters

[in] _index The new vertex index

◆ AddNodeAssignment()

void AddNodeAssignment	(	const unsigned int	_vertex,
		const unsigned int	_node,
		const float	_weight
	)

Add a vertex - skeleton node assignment.

Parameters

[in]	_vertex	The vertex index
[in]	_node	The node index
[in]	_weight	The weight (between 0 and 1)

◆ AddNormal() [1/2]

void AddNormal	(	const double	_x,
		const double	_y,
		const double	_z
	)

Add a normal to the mesh.

Parameters

[in]	_x	Position along x
[in]	_y	Position along y
[in]	_z	Position along z

◆ AddNormal() [2/2]

void AddNormal ( const gz::math::Vector3d & _n )

Add a normal to the mesh.

Parameters

[in] _n The normal

◆ AddTexCoord() [1/2]

void AddTexCoord	(	const double	_u,
		const double	_v
	)

Add a texture coord to the mesh. If multiple texture coordinate sets exist, this function adds it to the first texture coordinate set in the submesh. If no previous texture coordinates exist, it is added to set 0.

Parameters

[in]	_u	Position along u
[in]	_v	Position along v

See also: AddTexCoordBySet

◆ AddTexCoord() [2/2]

void AddTexCoord ( const gz::math::Vector2d & _uv )

Add a texture coordinate to the mesh. If multiple texture coordinate sets exist, this function adds it to the first texture coordinate set in the submesh. If no previous texture coordinates exist, it is added to set 0.

Parameters

[in] _uv The texture coordinate

See also: AddTexCoordBySet

◆ AddTexCoordBySet() [1/2]

void AddTexCoordBySet	(	const gz::math::Vector2d &	_uv,
		unsigned int	_setIndex
	)

Add a texture coord to a texture coordinate set of the mesh.

Parameters

[in]	_u	Position along u
[in]	_v	Position along v
[in]	_setIndex	Texture coordinate set index

◆ AddTexCoordBySet() [2/2]

void AddTexCoordBySet	(	double	_u,
		double	_v,
		unsigned int	_setIndex
	)

Add a texture coord to a texture coordinate set of the mesh.

Parameters

[in]	_u	Position along u
[in]	_v	Position along v
[in]	_setIndex	Texture coordinate set index

◆ AddVertex() [1/2]

void AddVertex	(	const double	_x,
		const double	_y,
		const double	_z
	)

Add a vertex to the mesh.

Parameters

[in]	_x	Position along x
[in]	_y	Position along y
[in]	_z	Position along z

◆ AddVertex() [2/2]

void AddVertex ( const gz::math::Vector3d & _v )

Add a vertex to the mesh.

Parameters

[in] _v The new position

◆ Center()

void Center ( const gz::math::Vector3d & _center = gz::math::Vector3d::Zero )

Move the center of the submesh to the given coordinate. This will move all the vertices.

Parameters

[in] _center Location of the mesh center.

◆ FillArrays()

void FillArrays	(	double **	_vertArr,
		int **	_indexndArr
	)		const

Put all the data into flat arrays.

Parameters

[in]	_verArr	The vertex array to be filled.
[in]	_indexndArr	The index array to be filled.

◆ GenSphericalTexCoord()

void GenSphericalTexCoord ( const gz::math::Vector3d & _center )

Generate texture coordinates using spherical projection from center.

Parameters

[in] _center Center of the projection.

◆ GenSphericalTexCoordBySet()

void GenSphericalTexCoordBySet	(	const gz::math::Vector3d &	_center,
		unsigned int	_setIndex
	)

Generate texture coordinates for a texture coordinate set using spherical projection from center.

Parameters

[in]	_center	Center of the projection.
[in]	_setIndex	Texture coordinate set index

◆ GetMaterialIndex()

std::optional< unsigned int > GetMaterialIndex ( ) const

Get the material index.

Returns: The assigned material index. Nullopt is returned if the submesh has no assigned material index

◆ HasNodeAssignment()

bool HasNodeAssignment ( const unsigned int _index ) const

Return true if this submesh has the node assignment with the given index.

Parameters

[in] _index Node assignment index

Returns: Return true if this submesh has the node assignment with the given _index.

◆ HasNormal()

bool HasNormal ( const unsigned int _index ) const

Return true if this submesh has the normal with the given index.

Parameters

[in] _index Normal index

Returns: Return true if this submesh has the normal with the given _index.

◆ HasTexCoord()

bool HasTexCoord ( const unsigned int _index ) const

Return true if this submesh has the texture coordinate with the given index. If multiple texture coordinate sets exist, this function checks the first texture coordinate set in the submesh, which by default is set 0 unless AddTexCoordBySet is called with a different set index number the first time a texture coordinate is added.

Parameters

[in] _index Texture coordinate index

Returns: Return true if this submesh has the texture coordinate with the given _index.

See also: HasTexCoordBySet

◆ HasTexCoordBySet()

bool HasTexCoordBySet	(	unsigned int	_index,
		unsigned int	_setIndex
	)		const

Return true if this submesh has the texture coordinate with the given index in a texture coordinate set.

Parameters

[in]	_index	Texture coordinate index
[in]	_setIndex	Texture coordinate set index

Returns: Return true if this submesh has the texture coordinate with the given _index.

◆ HasVertex() [1/2]

bool HasVertex ( const gz::math::Vector3d & _v ) const

Return true if this submesh has the vertex.

Parameters

[in] _v Vertex coordinate

Returns: Return true if this submesh has the vertex

◆ HasVertex() [2/2]

bool HasVertex ( const unsigned int _index ) const

Return true if this submesh has the vertex with the given index.

Parameters

[in] _index Vertex index

Returns: Return true if this submesh has the vertex with the given _index.

◆ Index()

int Index ( const unsigned int _index ) const

Get an index value from the index array.

Parameters

[in] _index Array index.

Returns: The index, or -1 if the _index is out of bounds.

◆ IndexCount()

unsigned int IndexCount ( ) const

Return the number of indices.

Returns: The number of indices.

◆ IndexOfVertex()

int IndexOfVertex ( const gz::math::Vector3d & _v ) const

Get the index of the vertex.

Parameters

[in] _v Vertex to check

Returns: Index of the vertex that matches _v.

◆ IndexPtr()

const unsigned int * IndexPtr ( ) const

Get the raw index pointer. This is unsafe, it is the caller's responsibility to ensure it's not indexed out of bounds. The valid range is [0; IndexCount())

Returns: Raw indices

◆ Max()

gz::math::Vector3d Max ( ) const

Get the maximum X, Y, Z values from all the vertices.

Returns: Max X,Y,Z values from all vertices in submesh

◆ MaxIndex()

unsigned int MaxIndex ( ) const

Get the highest value in the index array.

Returns: The highest index value.

◆ Min()

gz::math::Vector3d Min ( ) const

Get the minimum X, Y, Z values from all the vertices.

Returns: Min X,Y,Z values from all vertices in submesh

◆ Name()

std::string Name ( ) const

Get the name of this mesh.

Returns: The name

◆ NodeAssignmentByIndex()

NodeAssignment NodeAssignmentByIndex ( const unsigned int _index ) const

Get a vertex - skeleton node assignment.

Parameters

[in] _index The index of the assignment

Returns: The skeleton node assignment, or a default constructed skeleton node assignment when _index is invalid.

See also: bool HasNodeAssignment(const unsigned int _index) const;

◆ NodeAssignmentsCount()

unsigned int NodeAssignmentsCount ( ) const

Get the number of vertex-skeleton node assignments.

Returns: The number of vertex-skeleton node assignments

◆ Normal()

gz::math::Vector3d Normal ( const unsigned int _index ) const

Get a normal.

Parameters

[in] _index The normal index

Returns: The normal direction or gz::math::Vector3d::Zero if index is out of bounds.

See also: bool HasNormal(const unsigned int _index);

◆ NormalCount()

unsigned int NormalCount ( ) const

Return the number of normals.

Returns: The number of normals.

◆ RecalculateNormals()

void RecalculateNormals ( )

Recalculate all the normals.

◆ Scale() [1/2]

void Scale ( const double & _factor )

Scale all vertices by _factor.

Parameters

[in] _factor Scaling factor

◆ Scale() [2/2]

void Scale ( const gz::math::Vector3d & _factor )

Scale all vertices by _factor.

Parameters

[in] _factor Scaling factor

◆ SetIndex()

void SetIndex	(	const unsigned int	_index,
		const unsigned int	_i
	)

Set an index.

Parameters

[in]	_index	Index of the indices
[in]	_i	The new index value to set to

◆ SetMaterialIndex()

void SetMaterialIndex ( const unsigned int _index )

Set the material index. Relates to the parent mesh material list.

Parameters

[in] _index Index to set the material to.

◆ SetName()

void SetName ( const std::string & _name )

Set the name of this mesh.

Parameters

[in] _n The name to set

◆ SetNormal()

void SetNormal	(	const unsigned int	_index,
		const gz::math::Vector3d &	_n
	)

Set a normal.

Parameters

[in]	_index	Index of the normal that will be set.
[in]	_n	The new normal direction

◆ SetPrimitiveType()

void SetPrimitiveType ( PrimitiveType _type )

Set the primitive type.

Parameters

[in] _type The primitive type

◆ SetTexCoord()

void SetTexCoord	(	const unsigned int	_index,
		const gz::math::Vector2d &	_uv
	)

Set a texture coordinate. If multiple texture coordinate sets exist, this function sets the texture coordinate in the first texture coordinate set in the submesh.

Parameters

[in]	_index	Index of the texture coordinate that will be set.
[in]	_uv	The new texture coordinate

See also: SetTexCoordBySet

◆ SetTexCoordBySet()

void SetTexCoordBySet	(	unsigned int	_index,
		const gz::math::Vector2d &	_uv,
		unsigned int	_setIdex
	)

Set a texture coordinate for a texture coordinate set.

Parameters

[in]	_index	Index of the texture coordinate that will be set.
[in]	_uv	The new texture coordinate
[in]	_setIndex	Texture coordinate set index

◆ SetVertex()

void SetVertex	(	const unsigned int	_index,
		const gz::math::Vector3d &	_v
	)

Set a vertex.

Parameters

[in]	_index	Index of the vertex
[in]	_v	The new vertex coordinate

◆ SubMeshPrimitiveType()

PrimitiveType SubMeshPrimitiveType ( ) const

Get the primitive type.

Returns: The primitive type

◆ TexCoord()

gz::math::Vector2d TexCoord ( const unsigned int _index ) const

Get a texture coordinate.

Parameters

[in] _index the texture index

Returns: The texture coordinate or gz::math::Vector2d::Zero if index is out of bounds.

See also: bool HasTexCoord(const unsigned int _index) const

◆ TexCoordBySet()

gz::math::Vector2d TexCoordBySet	(	unsigned int	_index,
		unsigned int	_setIndex
	)		const

Get a texture coordinate for a texture coordinate set.

Parameters

[in] _index the texture index

Returns: The texture coordinate or gz::math::Vector2d::Zero if index is out of bounds.

Parameters

[in] _setIndex Texture coordinate set index

See also: bool HasTexCoordBySet(unsigned int _index, unsigned int _setIndex) const

◆ TexCoordCount()

unsigned int TexCoordCount ( ) const

Return the number of texture coordinates. If multiple texture coordinate sets exist, this function checks the first texture coordinate set in the submesh, which by default is set 0, unless AddTexCoordBySet is called with a different set index number the first time a texture coordinate is added.

Returns: The number of texture coordinates.

See also: TexCoordCountBySet

◆ TexCoordCountBySet()

unsigned int TexCoordCountBySet ( unsigned int _setIndex ) const

Return the number of texture coordinates for a texture coordinate set.

Parameters

[in] _setIndex Texture coordinate set index

Returns: The number of texture coordinates.

◆ TexCoordSetCount()

unsigned int TexCoordSetCount ( ) const

Return the number of texture coordinate sets.

Returns: The number of texture coordinates sets.

◆ Translate()

void Translate ( const gz::math::Vector3d & _vec )

Move all vertices by _vec.

Parameters

[in] _vec Amount to translate vertices.

◆ Vertex()

gz::math::Vector3d Vertex ( const unsigned int _index ) const

Get a vertex.

Parameters

[in] _index Index of the vertex

Returns: Coordinates of the vertex or gz::math::Vector3d::Zero if the index is out of bounds.

See also: bool HasVertex(const unsigned int) const

◆ VertexCount()

unsigned int VertexCount ( ) const

Get the number of vertices.

Returns: The number of vertices.

◆ VertexPtr()

const gz::math::Vector3d * VertexPtr ( ) const

Get the raw vertex pointer. This is unsafe, it is the caller's responsibility to ensure it's not indexed out of bounds. The valid range is [0; VertexCount())

Returns: Raw vertices

◆ Volume()

double Volume ( ) const

Compute the volume of this submesh. The primitive type must be TRIANGLES.

This function utilizes the mesh volume formula from "Efficient feature extraction for 2d/3d objects in mesh representation" by Cha Zhang and Tsuhan Chen. Link: http://chenlab.ece.cornell.edu/Publication/Cha/icip01_Cha.pdf. The formula does not check for a closed (water tight) mesh.

Returns: The submesh's volume. The volume can be zero if the primitive type is not TRIANGLES, or there are no triangles.

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

SubMesh.hh

Public Types

Public Member Functions

Detailed Description

Member Enumeration Documentation

◆ PrimitiveType

Constructor & Destructor Documentation

◆ SubMesh() [1/2]

◆ SubMesh() [2/2]

◆ ~SubMesh()

Member Function Documentation

◆ AddIndex()

◆ AddNodeAssignment()

◆ AddNormal() [1/2]

◆ AddNormal() [2/2]

◆ AddTexCoord() [1/2]

◆ AddTexCoord() [2/2]

◆ AddTexCoordBySet() [1/2]

◆ AddTexCoordBySet() [2/2]

◆ AddVertex() [1/2]

◆ AddVertex() [2/2]

◆ Center()

◆ FillArrays()

◆ GenSphericalTexCoord()

◆ GenSphericalTexCoordBySet()

◆ GetMaterialIndex()

◆ HasNodeAssignment()

◆ HasNormal()

◆ HasTexCoord()

◆ HasTexCoordBySet()

◆ HasVertex() [1/2]

◆ HasVertex() [2/2]

◆ Index()

◆ IndexCount()

◆ IndexOfVertex()

◆ IndexPtr()

◆ Max()

◆ MaxIndex()

◆ Min()

◆ Name()

◆ NodeAssignmentByIndex()

◆ NodeAssignmentsCount()

◆ Normal()

◆ NormalCount()

◆ RecalculateNormals()

◆ Scale() [1/2]

◆ Scale() [2/2]

◆ SetIndex()

◆ SetMaterialIndex()

◆ SetName()

◆ SetNormal()

◆ SetPrimitiveType()

◆ SetTexCoord()

◆ SetTexCoordBySet()

◆ SetVertex()

◆ SubMeshPrimitiveType()

◆ TexCoord()

◆ TexCoordBySet()

◆ TexCoordCount()

◆ TexCoordCountBySet()

◆ TexCoordSetCount()

◆ Translate()

◆ Vertex()

◆ VertexCount()

◆ VertexPtr()

◆ Volume()