ON_MeshX Class Reference

#include <opennurbs_mesh.h>

Inheritance diagram for ON_MeshX:

Public Member Functions
	ON_MeshX (const ON_Mesh &mesh, const ON_RTree &mesh_face_rtree, ON__UINT_PTR mesh_id)
	ON_MeshX (const ON_Mesh &mesh, ON__UINT_PTR mesh_id)
	ON_MeshX (unsigned int vertex_count, const class ON_3dPoint *mesh_dV, const class ON_3fPoint *mesh_fV, const class ON_2dPoint *mesh_S, unsigned int face_count, const class ON_MeshFace *mesh_F, const ON_RTree &mesh_face_rtree, ON__UINT_PTR mesh_id)
	~ON_MeshX ()
double	BarycentricCoordinateTolerance () const
ON_Xform	MeshInverseTransform () const
ON_Xform	MeshTransform () const
bool	SetBarycentricCoordinateTolerance (double bc_tolerance)
bool	SetMeshTransform (ON_Xform xform)
void	SetSurfaceProperties (const class ON_Surface *surface)
void	SetSurfaceProperties (const class ON_SurfaceProperties *surface_properties)
const class ON_SurfaceProperties &	SurfaceProperties () const

Public Attributes
const ON_Mesh *	m_mesh
ON_BoundingBox	m_mesh_bbox
const class ON_3dPoint *	m_mesh_dV
const class ON_MeshFace *	m_mesh_F
const ON_RTree *	m_mesh_face_rtree
const unsigned int	m_mesh_Fcnt
const class ON_3fPoint *	m_mesh_fV
const ON__UINT_PTR	m_mesh_id
const class ON_2dPoint *	m_mesh_S
const unsigned int	m_mesh_Vcnt
ON__UINT_PTR	m_tag

Protected Attributes
double	m_bc_tolerance
	default is ON_EPSILON More...
unsigned char	m_bHaveXform
ON_Xform	m_inverse_xform
unsigned char	m_reserved1 [7]
ON_SurfaceProperties	m_surface_properties
ON_Xform	m_xform

Constructor & Destructor Documentation

ON_MeshX() [1/3]

ON_MeshX::ON_MeshX	(	const ON_Mesh &	mesh,
		ON__UINT_PTR	mesh_id
	)

Parameters: mesh - [in] mesh.MeshFaceTree(true) is used to get a mesh face rtree. mesh_id - [in] Value of that is assigned to ON_MeshXPoint.m_mesh_id.

ON_MeshX() [2/3]

ON_MeshX::ON_MeshX	(	const ON_Mesh &	mesh,
		const ON_RTree &	mesh_face_rtree,
		ON__UINT_PTR	mesh_id
	)

ON_MeshX() [3/3]

ON_MeshX::ON_MeshX	(	unsigned int	vertex_count,
		const class ON_3dPoint *	mesh_dV,
		const class ON_3fPoint *	mesh_fV,
		const class ON_2dPoint *	mesh_S,
		unsigned int	face_count,
		const class ON_MeshFace *	mesh_F,
		const ON_RTree &	mesh_face_rtree,
		ON__UINT_PTR	mesh_id
	)

~ON_MeshX()

ON_MeshX::~ON_MeshX

(

)

Member Function Documentation

BarycentricCoordinateTolerance()

double ON_MeshX::BarycentricCoordinateTolerance

(

)

const

MeshInverseTransform()

ON_Xform ON_MeshX::MeshInverseTransform

(

)

const

Returns: Inverse of the transformation that is conceptually applied to the mesh before it is intersected with the plane.

MeshTransform()

ON_Xform ON_MeshX::MeshTransform

(

)

const

Returns: Transformation that is conceptually applied to the mesh before it is intersected with the plane.

SetBarycentricCoordinateTolerance()

bool ON_MeshX::SetBarycentricCoordinateTolerance

(

double

bc_tolerance

)

Parameters: bc_tolerance - [in] If a barycentric coordinate is < bc_tolerance, then the barycentric coordinate is set to zero. Any value that is invalid or < ON_EPSILON or >= 0.25 is ignored.
Returns: true if bc_tolerance was a valid value and will be used as the barycentric coordinate tolerance. Remarks: The default is ON_EPSILON. Barycentric coordinates are calculated from plane equation evaluations of mesh vertex locations. All internal calculations use double precision arithmetic.

SetMeshTransform()

bool ON_MeshX::SetMeshTransform

(

ON_Xform

xform

)

Description: If you want to calculate the instersection of a plane and xform*mesh, then you can use SetMeshTransform() to specify the transformation and avoid having to transform the mesh and calculate a new mesh face rtree. Parameters: xform - [in] transformation that is conceptually applied to the mesh before an intesection calculation. This transformation must have an inverse.

SetSurfaceProperties() [1/2]

void ON_MeshX::SetSurfaceProperties

(

const class ON_Surface *

surface

)

Description: When a mesh approximates a surface with singularities and an intersection event occurs on a facet with a corner at a singularity, surface property information is needed to correctly set the ON_MeshXPoint.m_S[] values.

SetSurfaceProperties() [2/2]

void ON_MeshX::SetSurfaceProperties

(

const class ON_SurfaceProperties *

surface_properties

)

SurfaceProperties()

const class ON_SurfaceProperties& ON_MeshX::SurfaceProperties

(

)

const

Member Data Documentation

m_bc_tolerance

double ON_MeshX::m_bc_tolerance

protected

default is ON_EPSILON

m_bHaveXform

unsigned char ON_MeshX::m_bHaveXform

protected

m_inverse_xform

ON_Xform ON_MeshX::m_inverse_xform

protected

m_mesh

const ON_Mesh* ON_MeshX::m_mesh

When the ON_MeshX() constructor that takes an ON_Mesh reference is used, this pointer is set to &mesh for the convenience of the caller. The ON_MeshX class never uses this pointer

m_mesh_bbox

ON_BoundingBox ON_MeshX::m_mesh_bbox

m_mesh_dV

const class ON_3dPoint* ON_MeshX::m_mesh_dV

m_mesh_F

const class ON_MeshFace* ON_MeshX::m_mesh_F

m_mesh_face_rtree

const ON_RTree* ON_MeshX::m_mesh_face_rtree

m_mesh_Fcnt

const unsigned int ON_MeshX::m_mesh_Fcnt

m_mesh_fV

const class ON_3fPoint* ON_MeshX::m_mesh_fV

m_mesh_id

const ON__UINT_PTR ON_MeshX::m_mesh_id

The value of the mesh_id parameter passed to the ON_MeshX() constructor is saved in m_mesh_id and the value is assigned to ON_MeshX.m_mesh_id when intersection events are added.

m_mesh_S

const class ON_2dPoint* ON_MeshX::m_mesh_S

m_mesh_Vcnt

const unsigned int ON_MeshX::m_mesh_Vcnt

These m_mesh_* fields save the information need to calculate mesh plane intersections. The values of these fields are set in the ON_MeshX constructors.

m_reserved1

unsigned char ON_MeshX::m_reserved1[7]

protected

m_surface_properties

ON_SurfaceProperties ON_MeshX::m_surface_properties

protected

m_tag

ON__UINT_PTR ON_MeshX::m_tag

The ON_MeshX constructor sets m_tag to zero. Nothing in opennurbs modifies or uses this value.

m_xform

ON_Xform ON_MeshX::m_xform

protected