ON_MeshParameters Class Reference

#include <opennurbs_mesh.h>

Public Types
enum	MESH_PARAMETER_ID : unsigned int {   MESH_PARAMETER_ID::unspecified_mesh_parameter_id = 0, MESH_PARAMETER_ID::bComputeCurvature_parameter_id = 1, MESH_PARAMETER_ID::bSimplePlanes_parameter_id = 2, MESH_PARAMETER_ID::bRefine_parameter_id = 3,   MESH_PARAMETER_ID::bJaggedSeams_parameter_id = 4, MESH_PARAMETER_ID::bDoublePrecision_parameter_id = 5, MESH_PARAMETER_ID::mesher_parameter_id = 6, MESH_PARAMETER_ID::texture_range_parameter_id = 7,   MESH_PARAMETER_ID::tolerance_parameter_id = 8, MESH_PARAMETER_ID::relative_tolerance_parameter_id = 9, MESH_PARAMETER_ID::min_tolerance_parameter_id = 10, MESH_PARAMETER_ID::min_edge_length_parameter_id = 11,   MESH_PARAMETER_ID::max_edge_length_parameter_id = 12, MESH_PARAMETER_ID::grid_aspect_ratio_parameter_id = 13, MESH_PARAMETER_ID::grid_min_count_parameter_id = 14, MESH_PARAMETER_ID::grid_max_count_parameter_id = 15,   MESH_PARAMETER_ID::grid_angle_parameter_id = 16, MESH_PARAMETER_ID::grid_amplification_parameter_id = 17, MESH_PARAMETER_ID::refine_angle_parameter_id = 18, MESH_PARAMETER_ID::face_type_parameter_id = 19,   MESH_PARAMETER_ID::srf_domain_parameter_id = 20, MESH_PARAMETER_ID::bClosedObjectPostProcess_id = 21, MESH_PARAMETER_ID::mesher_id = 22, MESH_PARAMETER_ID::crv_tess_min_num_segments_parameter_id = 23,   MESH_PARAMETER_ID::crv_tess_angle_tol_in_degrees_parameter_id = 24, MESH_PARAMETER_ID::crv_tess_max_dist_between_points_parameter_id = 25, MESH_PARAMETER_ID::crv_tess_min_parametric_ratio_parameter_id = 26, MESH_PARAMETER_ID::bEvaluatorBasedTessellation_parameter_id = 27,   MESH_PARAMETER_ID::srf_tess_chord_height_parameter_id = 28, MESH_PARAMETER_ID::srf_tess_angle_tol_in_degrees_parameter_id = 29, MESH_PARAMETER_ID::srf_tess_max_edge_length_parameter_id = 30, MESH_PARAMETER_ID::srf_tess_min_edge_length_parameter_id = 31,   MESH_PARAMETER_ID::srf_tess_min_edge_length_ratio_uv_parameter_id = 32, MESH_PARAMETER_ID::srf_tess_max_aspect_ratio_parameter_id = 33, MESH_PARAMETER_ID::smoothing_passes_parameter_id = 34, MESH_PARAMETER_ID::max_mesh_parameter_id }
enum	MESH_STYLE : unsigned char {   MESH_STYLE::unset_mesh_style = 0, MESH_STYLE::render_mesh_fast = 1, MESH_STYLE::render_mesh_quality = 2, MESH_STYLE::render_mesh_custom = 9,   MESH_STYLE::render_mesh_per_object = 10 }
enum	Type : unsigned char {   Type::Unset = 0, Type::Default = 1, Type::FastRender = 2, Type::QualityRender = 3,   Type::DefaultAnalysis = 4, Type::FromMeshDensity = 5, Type::Custom = 15 }
	ON_MeshParameter::Type identifies the type of mesh creation settings. More...

Public Member Functions
	ON_MeshParameters ()=default
	ON_MeshParameters (const ON_MeshParameters &)=default
	ON_MeshParameters (double normalized_mesh_density, double min_edge_length=ON_UNSET_VALUE)
	~ON_MeshParameters ()=default
const bool	ClosedObjectPostProcess () const
const bool	ComputeCurvature () const
ON_SHA1_Hash	ContentHash () const
const bool	CustomSettings () const
const bool	CustomSettingsEnabled () const
ON__UINT32	DataCRC (ON__UINT32) const
const ON_wString	Description () const
const bool	DoublePrecision () const
void	Dump (ON_TextLog &test_log) const
const unsigned int	FaceType () const
const int	GeometrySettingsDensityPercentage (int no_match_found_result) const
ON_SHA1_Hash	GeometrySettingsHash () const
ON_SHA1_Hash	GeometrySettingsHash (bool bIgnoreSubDParameters) const
const ON_MeshParameters::MESH_STYLE	GeometrySettingsRenderMeshStyle (const ON_MeshParameters *custom_mp, ON_MeshParameters::MESH_STYLE no_match_found_result) const
ON_MeshParameters::Type	GeometrySettingsType () const
ON_MeshParameters::Type	GeometrySettingsType (bool bIgnoreSubDParameters) const
const double	GridAmplification () const
const double	GridAngleDegrees () const
const double	GridAngleRadians () const
const double	GridAspectRatio () const
const int	GridMaxCount () const
	desired maximum number of quads in initial grid More...
const int	GridMinCount () const
	minimum number of quads in initial grid More...
const bool	JaggedSeams () const
const double	MaximumEdgeLength () const
double	MeshDensity () const
double	MeshDensity (bool bIgnoreSubDParameters) const
const unsigned int	Mesher () const
	0 = slow mesher, 1 = fast mesher More...
ON_UUID	MesherId () const
const double	MinimumEdgeLength () const
const double	MinimumTolerance () const
ON_MeshParameters &	operator= (const ON_MeshParameters &)=default
bool	Read (ON_BinaryArchive &)
const bool	Refine () const
const double	RefineAngleDegrees () const
const double	RefineAngleRadians () const
const double	RelativeTolerance () const
void	SetClosedObjectPostProcess (bool bClosedObjectPostProcess)
void	SetComputeCurvature (bool bComputeCurvature)
void	SetCustomSettings (bool bCustomSettings)
void	SetCustomSettingsEnabled (bool bCustomSettingsEnabled)
void	SetDoublePrecision (bool bDoublePrecision)
void	SetFaceType (unsigned int face_type)
void	SetGridAmplification (double grid_amplification)
void	SetGridAngleDegrees (double grid_angle_degrees)
void	SetGridAngleRadians (double grid_angle_radians)
void	SetGridAspectRatio (double grid_aspect_ratio)
void	SetGridMaxCount (int grid_max_count)
void	SetGridMinCount (int grid_min_count)
void	SetJaggedSeams (bool bJaggedSeams)
void	SetMaximumEdgeLength (double maximum_edge_length)
void	SetMesher (unsigned int mesher)
void	SetMesherId (ON_UUID)
void	SetMinimumEdgeLength (double minimum_edge_length)
void	SetMinimumTolerance (double minimum_tolerance)
void	SetRefine (bool bRefine)
void	SetRefineAngleDegrees (double refine_angle_degrees)
void	SetRefineAngleRadians (double refine_angle_radians)
void	SetRelativeTolerance (double relative_tolerance)
void	SetSimplePlanes (bool bSimplePlanes)
void	SetSubDDisplayParameters (const class ON_SubDDisplayParameters &subd_mesh_parameters)
void	SetTextureRange (unsigned int texture_range)
void	SetTextureRangePictureFrameHack ()
void	SetTolerance (double tolerance)
const bool	SimplePlanes () const
const ON_SubDDisplayParameters	SubDDisplayParameters () const
const unsigned int	TextureRange () const
const bool	TextureRangeIsValid () const
const double	Tolerance () const
	These controls are used in both stages. More...
bool	Write (ON_BinaryArchive &) const

Static Public Member Functions
static double	ClampMeshDensityValue (double normalized_mesh_density)
static int	Compare (const ON_MeshParameters &a, const ON_MeshParameters &b)
static int	CompareGeometrySettings (const ON_MeshParameters &a, const ON_MeshParameters &b)
static int	CompareGeometrySettings (const ON_MeshParameters &a, const ON_MeshParameters &b, const bool bIgnoreSubDParameters)
static const ON_MeshParameters	CreateFromMeshDensity (double normalized_mesh_density)
static double	MeshDensityAsPercentage (double normalized_mesh_density)
static ON_MeshParameters::MESH_PARAMETER_ID	MeshParameterIdFromUnsigned (unsigned int mesh_parameter_id_as_unsigned)
static ON_MeshParameters::MESH_STYLE	MeshStyleFromUnsigned (unsigned int mesh_style_as_unsigned)
static double	MinimumEdgeLengthFromTolerance (double max_edge_length, double tolerance)
static double	ToleranceFromObjectSize (double relative_tolerance, double actual_size)

Static Public Attributes
static const ON_MeshParameters	DefaultAnalysisMesh
static const ON_MeshParameters	DefaultMesh
static const ON_MeshParameters	FastRenderMesh
static const ON_UUID	PangolinMesherId
	{EB6F6F3F-F975-4546-9D1C-64E9423BEB7F} More...
static const ON_MeshParameters	QualityRenderMesh
static const ON_UUID	RhinoLegacyMesherId
	surface meshing parameters More...

Detailed Description

Class ON_Mesh

Member Enumeration Documentation

MESH_PARAMETER_ID

enum ON_MeshParameters::MESH_PARAMETER_ID : unsigned int

strong

The MESH_PARAMETER_ID enum values are used to identify mesh creation parameters.

Enumerator
unspecified_mesh_parameter_id
bComputeCurvature_parameter_id	BEGIN Legacy parameters.
bSimplePlanes_parameter_id
bRefine_parameter_id
bJaggedSeams_parameter_id
bDoublePrecision_parameter_id
mesher_parameter_id
texture_range_parameter_id
tolerance_parameter_id
relative_tolerance_parameter_id
min_tolerance_parameter_id
min_edge_length_parameter_id
max_edge_length_parameter_id
grid_aspect_ratio_parameter_id
grid_min_count_parameter_id
grid_max_count_parameter_id
grid_angle_parameter_id
grid_amplification_parameter_id
refine_angle_parameter_id
face_type_parameter_id
srf_domain_parameter_id
bClosedObjectPostProcess_id
mesher_id	END Legacy parameters. UUID parameter identifying what mesher code created the mesh.
crv_tess_min_num_segments_parameter_id	BEGIN Pangolin parameters
crv_tess_angle_tol_in_degrees_parameter_id
crv_tess_max_dist_between_points_parameter_id	Not same as 'max_edge_length_parameter_id' since 'curve_tess_max_dist_between_points' is only for curves, not surfaces.
crv_tess_min_parametric_ratio_parameter_id
bEvaluatorBasedTessellation_parameter_id
srf_tess_chord_height_parameter_id	Not same as 'tolerance_parameter_id' since 'surface_tess_chord_height' is only for surfaces, not curves.
srf_tess_angle_tol_in_degrees_parameter_id
srf_tess_max_edge_length_parameter_id
srf_tess_min_edge_length_parameter_id
srf_tess_min_edge_length_ratio_uv_parameter_id
srf_tess_max_aspect_ratio_parameter_id
smoothing_passes_parameter_id
max_mesh_parameter_id	END Pangolin parameters.

MESH_STYLE

enum ON_MeshParameters::MESH_STYLE : unsigned char

strong

Enumerator
unset_mesh_style	All of these enum values must be in the range 0-255 because unsigned chars are use for storage in some locations.
render_mesh_fast	Use ON_MeshParameters::FastRenderMesh.
render_mesh_quality	Use ON_MeshParameters::QualityRenderMesh
render_mesh_custom	3 - 8 reserved for future predefined render mesh styles Use ON_3dmSettings::m_CustomRenderMeshSettings
render_mesh_per_object	Use ON_Object::GetMeshParameters().

Type

enum ON_MeshParameters::Type : unsigned char

strong

ON_MeshParameter::Type identifies the type of mesh creation settings.

Enumerator
Unset	Not set.
Default	Default mesh creation settings from ON_MeshParameters::DefaultMesh.
FastRender	Fast render mesh creation settings from ON_MeshParameters::FastRenderMesh.
QualityRender	Quality render mesh creation settings from ON_MeshParameters::QualityRenderMesh.
DefaultAnalysis	Default analysis mesh creation settings from ON_MeshParameters::DefaultAnalysisMesh
FromMeshDensity	Mesh density settings from ON_MeshParameters::CreateFromMeshDensity(normalized_mesh_density). The value of normalized_mesh_density is returned by the MeshDensity() property.
Custom	Mesh creation settings are set and are not from one of the cases listed above.

Constructor & Destructor Documentation

ON_MeshParameters() [1/3]

ON_MeshParameters::ON_MeshParameters ( )

default

~ON_MeshParameters()

ON_MeshParameters::~ON_MeshParameters ( )

default

ON_MeshParameters() [2/3]

ON_MeshParameters::ON_MeshParameters ( const ON_MeshParameters &  )

default

ON_MeshParameters() [3/3]

ON_MeshParameters::ON_MeshParameters	(	double	normalized_mesh_density,
		double	min_edge_length = ON_UNSET_VALUE
	)

Description: Tool for providing a simple "slider" interface. Parameters: normalized_mesh_density - [in] 0.0 <= normalized_mesh_density <= 1.0 0 quickly creates extremely coarse meshes. 1 slowly creates extremely dense meshes. min_edge_length - [in] > 0.0 custom value ON_UNSET_VALUE: for default (0.0001) Remarks: If you are using a user interface "slider" to set mesh parameters, then you are strongly encouraged to call ON_MeshParameters::CreateFromMeshDensity() instead of using this constructor. ON_MeshParameters::CreateFromMeshDensity() handles out of bounds input in a predictable way and is easier to search for when examining code.

Member Function Documentation

ClampMeshDensityValue()

static double ON_MeshParameters::ClampMeshDensityValue ( double  normalized_mesh_density )

static

Description: This function cleans up normalized_density used in ON_MeshParameters::CreateFromMeshDensity() and ON_SubDDisplayParameters CreateFromMeshDensity(). Parameters: normalized_mesh_density - [in] should be close to being between 0 and 1. Returns: if normalized_density is between 0.0 and 1.0, that value is returned. If normalized_density is a hair smaller than 0.0, then 0.0 is returned. If normalized_density is a hair bigger than 1.0, then 1.0 is returned. Otherwise 0.5 is returned.

ClosedObjectPostProcess()

const bool ON_MeshParameters::ClosedObjectPostProcess

(

)

const

If the object being meshed is closed, m_bClosedObjectPostProcess is true, m_bJaggedSeams = false, and the resulting mesh is not closed, then a post meshing process is applied to find and close gaps in the mesh. Typically the resulting mesh is not closed because the input object has a geometric flaw like loops in trimming curves.

Compare()

static int ON_MeshParameters::Compare ( const ON_MeshParameters &  a, const ON_MeshParameters &  b  )

static

CompareGeometrySettings() [1/2]

static int ON_MeshParameters::CompareGeometrySettings ( const ON_MeshParameters &  a, const ON_MeshParameters &  b  )

static

Description: Compares all meshing parameters that control mesh geometry. Does not compare m_bCustomSettings, CustomSettingsEnabled(), m_bComputeCurvature, m_bDoublePrecision, MinimumTolerance(), m_texture_range, m_srf_domain0 and m_srf_domain1; and from the SubD meshing parameters in m_subd_mesh_parameters_as_char, does not compare m_context, m_bComputeCurvature, m_terminator, m_progress_reporter, and m_progress_reporter_interval.

CompareGeometrySettings() [2/2]

static int ON_MeshParameters::CompareGeometrySettings ( const ON_MeshParameters &  a, const ON_MeshParameters &  b, const bool  bIgnoreSubDParameters  )

static

Description: Compares all meshing parameters that control mesh geometry. Does not compare m_bCustomSettings, CustomSettingsEnabled(), m_bComputeCurvature, m_bDoublePrecision, MinimumTolerance(), m_texture_range, m_srf_domain0 and m_srf_domain1; and from the SubD meshing parameters in m_subd_mesh_parameters_as_char, does not compare m_context, m_bComputeCurvature, m_terminator, m_progress_reporter, and m_progress_reporter_interval. If bIgnoreSubDParameters is true, ignores all settings in m_subd_mesh_parameters_as_char.

ComputeCurvature()

const bool ON_MeshParameters::ComputeCurvature

(

)

const

Meshing happens in two stages. The first stage creates a rectangular grid. The second stage refines the grid until the mesh meets all meshing requirements. The third stage combines coincident vertices if the resulting mesh is a composite. false - (default) - ON_Mesh::m_K[] not computed true - ON_Mesh::m_K[] computed bool ComputeCurvature() const;

ContentHash()

ON_SHA1_Hash ON_MeshParameters::ContentHash

(

)

const

Returns: A hash of every ON_MeshParameters setting. Remarks: The hash intentionally ignores m_bCustomSettingsEnabled or m_bDoublePrecision.

CreateFromMeshDensity()

static const ON_MeshParameters ON_MeshParameters::CreateFromMeshDensity ( double  normalized_mesh_density )

static

Description: This function creates ON_MeshParameters from a user interface "slider" like Rhino's simple mesh controls. Parameters: normalized_mesh_density - [in] A double between 0.0 and 1.0. 0.0 creates meshes with fewer faces than 1.0.

Invalid input is treated as 0.5. Returns: A valid ON_MeshParameters with the specified subd display density.

CustomSettings()

const bool ON_MeshParameters::CustomSettings

(

)

const

The CustomSettings() parameter applies when these mesh creation parameters specify how an object's mesh should be created and these parameters should override the the model or application default mesh creation parameters.

When CustomSettings() is true, it indicates these mesh creation parameters are explicitly set for the object and context in question and should override the model or application defaults.

When CustomSettings() is false, it indicates these mesh creation parameters were inherited from from model or application defaults and any mesh created with these parameters should be updated when these parameters differ from the current model or application defaults.

CustomSettingsEnabled()

const bool ON_MeshParameters::CustomSettingsEnabled

(

)

const

The CustomSettingsEnabled() value applies to mesh creation parameters that are on ON_3dmObjectAttributes and have CustomSettings() = true. In this situation:

If CustomSettingsEnabled() is true, then the use of these mesh creation parameters is enabled.

If CustomSettingsEnabled() is false, then these mesh creation parameters should be ignored.

DataCRC()

ON__UINT32 ON_MeshParameters::DataCRC

(

ON__UINT32

)

const

Description()

const ON_wString ON_MeshParameters::Description

(

)

const

Returns: "Fast" if this and ON_MeshParameters::FastRenderMesh have the same geometry settings. "Quality" if this and ON_MeshParameters::QualityRenderMesh have the same geometry settings. "Density(p%)" if this and ON_MeshParameters::CreateFromMeshDensity(p/100.0) have the same geometry settings. "Default" if this and ON_MeshParameters::DefaultMesh have the same geometry settings. "DefaultAnalysis" if this and ON_MeshParameters::DefaultAnalysis have the same geometry settings. Otherwise, "Custom(SHA1)" where SHA1 = this->GeometryHash();

DoublePrecision()

const bool ON_MeshParameters::DoublePrecision

(

)

const

false - (default) the mesh vertices will be float precision values in the m_V[] array. true - The mesh vertices will be double precision values in the DoublePrecisionVertices() array. Float precision values will also be returned in the m_V[] array.

Dump()

void ON_MeshParameters::Dump

(

ON_TextLog &

test_log

)

const

C++ default works fine ///< ON_MeshParameters(const ON_MeshParameters& ); C++ default works fine ///< ON_MeshParameters& operator=(const ON_MeshParameters&);

FaceType()

const unsigned int ON_MeshParameters::FaceType

(

)

const

These controls are used during stage 3 0 = mixed triangle and quads 1 = all triangles 2 = all quads

GeometrySettingsDensityPercentage()

const int ON_MeshParameters::GeometrySettingsDensityPercentage

(

int

no_match_found_result

)

const

Returns: n in the range 0 to 100, inclusive, when (0 == ON_MeshParameters::CompareGeometrySettings(*this,ON_MeshParameters(n/100.0)) no_match_found_result: otherwise Remarks: This is a legacy function with roots dating back to Rhino 1.0. High quality code should use ON_MeshParameters::MeshDensity() or ON_MeshParameters::MeshDensityAsPercentage(ON_MeshParameters::MeshDensity()).

GeometrySettingsHash() [1/2]

ON_SHA1_Hash ON_MeshParameters::GeometrySettingsHash

(

)

const

Returns: A hash of values that control mesh geometry. Remarks: This has intentionally ignored m_bCustomSettings, m_bCustomSettingsEnabled, m_bComputeCurvature, m_bDoublePrecision, m_bClosedObjectPostProcess, m_texture_range. If you need to include those values, call ContentHash().

GeometrySettingsHash() [2/2]

ON_SHA1_Hash ON_MeshParameters::GeometrySettingsHash

(

bool

bIgnoreSubDParameters

)

const

Parameters: bIgnoreSubDParameters - [in] If true, the SubD meshing parameters are not hashed. Returns: A hash of values that control mesh geometry. Remarks: This has intentionally ignored m_bCustomSettings, m_bCustomSettingsEnabled, m_bComputeCurvature, m_bDoublePrecision, m_bClosedObjectPostProcess, m_texture_range. If you need to include those values, call ContentHash().

GeometrySettingsRenderMeshStyle()

const ON_MeshParameters::MESH_STYLE ON_MeshParameters::GeometrySettingsRenderMeshStyle	(	const ON_MeshParameters *	custom_mp,
		ON_MeshParameters::MESH_STYLE	no_match_found_result
	)		const

Returns: ON_MeshParameters::render_mesh_fast ON_MeshParameters::FastRenderMesh and this have the same geometry settings ON_MeshParameters::render_mesh_quality ON_MeshParameters::QualityRenderMesh and this have the same geometry settings ON_MeshParameters::render_mesh_custom custom_mp is not null and has the same geometry settings no_match_found_result otherwise

GeometrySettingsType() [1/2]

ON_MeshParameters::Type ON_MeshParameters::GeometrySettingsType

(

)

const

Returns: The type of geometry settings taking SubD parameters into account. Remarks: This function will never return ON_MeshParameters::Type::Unset. In particular, if the return value is not ON_MeshParameters::Type::Custom, then the settings come from one of the built-in mesh creation settings.

GeometrySettingsType() [2/2]

ON_MeshParameters::Type ON_MeshParameters::GeometrySettingsType

(

bool

bIgnoreSubDParameters

)

const

Returns: The type of geometry settings. Parameters: bIgnoreSubDParameters - [in] If true, SubD meshing parameters are ignored in determining the type. Remarks: This function will never return ON_MeshParameters::Type::Unset. In particular, if the return value is not ON_MeshParameters::Type::Custom, then the settings come from one of the built-in mesh creation settings.

GridAmplification()

const double ON_MeshParameters::GridAmplification

(

)

const

The parameters above generate a grid. If you want fewer quads, set m_grid_amplification to a value < 1. If you want more quads, set m_grid_amplification to a value > 1. default = 1 and values <= 0 are treated as 1.

GridAngleDegrees()

const double ON_MeshParameters::GridAngleDegrees

(

)

const

maximum angle (degrees) between surface normal evaluated at adjacent vertices. 0.0 is treated as 180.0.

GridAngleRadians()

const double ON_MeshParameters::GridAngleRadians

(

)

const

maximum angle (radians) between surface normal evaluated at adjacent vertices. 0.0 is treated as pi.

GridAspectRatio()

const double ON_MeshParameters::GridAspectRatio

(

)

const

These controls are used during stage 1 to generate the grid desired aspect ratio of quads in grid 0.0 = any aspect ratio is acceptable values >0 and < sqrt(2) are treated as sqrt(2)

GridMaxCount()

const int ON_MeshParameters::GridMaxCount

(

)

const

desired maximum number of quads in initial grid

GridMinCount()

const int ON_MeshParameters::GridMinCount

(

)

const

minimum number of quads in initial grid

JaggedSeams()

const bool ON_MeshParameters::JaggedSeams

(

)

const

false - (default) edges of meshes of joined b-rep faces match with no gaps or "T" joints. true - faces in b-reps are meshed independently. This is faster but results in gaps and "T" joints along seams between faces.

MaximumEdgeLength()

const double ON_MeshParameters::MaximumEdgeLength

(

)

const

edges longer than MaximumEdgeLength() will be split even when they meet all other meshing requirements

MeshDensity() [1/2]

double ON_MeshParameters::MeshDensity

(

)

const

Returns: If these mesh parameters, including the SubD meshing parameters, were created from ON_MeshParameters::CreateFromMeshDensity(normalized_mesh_density), then normalized_mesh_density is returned. Otherwise, ON_DBL_QNAN is returned. Remarks: The values of m_bDoublePrecision, m_bClosedObjectPostProcess, and m_texture_range can be arbitrary because they do not determine geometry of the resulting mesh and are typically ignored. You must compare these properties if they matter in your particular context.

MeshDensity() [2/2]

double ON_MeshParameters::MeshDensity

(

bool

bIgnoreSubDParameters

)

const

Parameters: bIgnoreSubDParameters - [in] If true, SubD meshing parameters are ignored. Returns: If these mesh parameters were created from ON_MeshParameters::CreateFromMeshDensity(normalized_mesh_density), then normalized_mesh_density is returned. Otherwise, ON_DBL_QNAN is returned. Remarks: The values of m_bDoublePrecision, m_bClosedObjectPostProcess, and m_texture_range can be arbitrary because they do not determine geometry of the resulting mesh and are typically ignored. You must compare these properties if they matter in your particular context.

MeshDensityAsPercentage()

static double ON_MeshParameters::MeshDensityAsPercentage ( double  normalized_mesh_density )

static

Description: Convert a mesh density value to a percentage with finite precision fuzz removed. Parameters: normalized_mesh_density - [in] valid input is 0.0 <= normalized_mesh_density <= 1.0 Returns: If normalized_density is valid, 100*normalized_density with fuzz cleaned up is returned. Otherwise ON_DBL_QNAN is returned.

Mesher()

const unsigned int ON_MeshParameters::Mesher

(

)

const

0 = slow mesher, 1 = fast mesher

MesherId()

ON_UUID ON_MeshParameters::MesherId

(

)

const

MeshParameterIdFromUnsigned()

static ON_MeshParameters::MESH_PARAMETER_ID ON_MeshParameters::MeshParameterIdFromUnsigned ( unsigned int  mesh_parameter_id_as_unsigned )

static

MeshStyleFromUnsigned()

static ON_MeshParameters::MESH_STYLE ON_MeshParameters::MeshStyleFromUnsigned ( unsigned int  mesh_style_as_unsigned )

static

MinimumEdgeLength()

const double ON_MeshParameters::MinimumEdgeLength

(

)

const

edges shorter than MinimumEdgeLength() will not be split even if the do not meet other meshing requirements

MinimumEdgeLengthFromTolerance()

static double ON_MeshParameters::MinimumEdgeLengthFromTolerance ( double  max_edge_length, double  tolerance  )

static

Description: Get a value to use for minimum edge length base on max_edge_length and tolerance settings. Parameters: max_edge_length - [in] 3d maximum edge length used to create mesh. tolerance - [in] 3d distance tolerance used to create mesh. Returns: A value that can be used for m_min_edge_length if no user specified value is available.

MinimumTolerance()

const double ON_MeshParameters::MinimumTolerance

(

)

const

operator=()

ON_MeshParameters& ON_MeshParameters::operator= ( const ON_MeshParameters &  )

default

Read()

bool ON_MeshParameters::Read

(

ON_BinaryArchive &

)

Refine()

const bool ON_MeshParameters::Refine

(

)

const

false - skip stage 2 mesh refinement step true - (default) do stage 2 mesh refinement step

RefineAngleDegrees()

const double ON_MeshParameters::RefineAngleDegrees

(

)

const

RefineAngleRadians()

const double ON_MeshParameters::RefineAngleRadians

(

)

const

These controls are used during stage 2 to refine the grid (in radians) maximum angle in radians between surface normal evaluated at adjacent vertices.

RelativeTolerance()

const double ON_MeshParameters::RelativeTolerance

(

)

const

If 0.0 < RelativeTolerance() < 1.0, then the maximum distance from the center of an edge to the surface will be <= T, where T is the larger of (MinimumTolerance(),d*RelativeTolerance()), where d is an estimate of the size of the object being meshed.

SetClosedObjectPostProcess()

void ON_MeshParameters::SetClosedObjectPostProcess

(

bool

bClosedObjectPostProcess

)

SetComputeCurvature()

void ON_MeshParameters::SetComputeCurvature

(

bool

bComputeCurvature

)

SetCustomSettings()

void ON_MeshParameters::SetCustomSettings

(

bool

bCustomSettings

)

SetCustomSettingsEnabled()

void ON_MeshParameters::SetCustomSettingsEnabled

(

bool

bCustomSettingsEnabled

)

SetDoublePrecision()

void ON_MeshParameters::SetDoublePrecision

(

bool

bDoublePrecision

)

SetFaceType()

void ON_MeshParameters::SetFaceType

(

unsigned int

face_type

)

SetGridAmplification()

void ON_MeshParameters::SetGridAmplification

(

double

grid_amplification

)

SetGridAngleDegrees()

void ON_MeshParameters::SetGridAngleDegrees

(

double

grid_angle_degrees

)

SetGridAngleRadians()

void ON_MeshParameters::SetGridAngleRadians

(

double

grid_angle_radians

)

SetGridAspectRatio()

void ON_MeshParameters::SetGridAspectRatio

(

double

grid_aspect_ratio

)

SetGridMaxCount()

void ON_MeshParameters::SetGridMaxCount

(

int

grid_max_count

)

SetGridMinCount()

void ON_MeshParameters::SetGridMinCount

(

int

grid_min_count

)

SetJaggedSeams()

void ON_MeshParameters::SetJaggedSeams

(

bool

bJaggedSeams

)

SetMaximumEdgeLength()

void ON_MeshParameters::SetMaximumEdgeLength

(

double

maximum_edge_length

)

SetMesher()

void ON_MeshParameters::SetMesher

(

unsigned int

mesher

)

SetMesherId()

void ON_MeshParameters::SetMesherId

(

ON_UUID

)

SetMinimumEdgeLength()

void ON_MeshParameters::SetMinimumEdgeLength

(

double

minimum_edge_length

)

SetMinimumTolerance()

void ON_MeshParameters::SetMinimumTolerance

(

double

minimum_tolerance

)

SetRefine()

void ON_MeshParameters::SetRefine

(

bool

bRefine

)

SetRefineAngleDegrees()

void ON_MeshParameters::SetRefineAngleDegrees

(

double

refine_angle_degrees

)

SetRefineAngleRadians()

void ON_MeshParameters::SetRefineAngleRadians

(

double

refine_angle_radians

)

SetRelativeTolerance()

void ON_MeshParameters::SetRelativeTolerance

(

double

relative_tolerance

)

SetSimplePlanes()

void ON_MeshParameters::SetSimplePlanes

(

bool

bSimplePlanes

)

SetSubDDisplayParameters()

void ON_MeshParameters::SetSubDDisplayParameters

(

const class ON_SubDDisplayParameters &

subd_mesh_parameters

)

SetTextureRange()

void ON_MeshParameters::SetTextureRange

(

unsigned int

texture_range

)

SetTextureRangePictureFrameHack()

void ON_MeshParameters::SetTextureRangePictureFrameHack

(

)

SetTolerance()

void ON_MeshParameters::SetTolerance

(

double

tolerance

)

SimplePlanes()

const bool ON_MeshParameters::SimplePlanes

(

)

const

false - (default) planar surfaces are meshed using the controls below. true - planar surfaces are meshed using minimal number of triangles and aspect/edge controls are ignored.

SubDDisplayParameters()

const ON_SubDDisplayParameters ON_MeshParameters::SubDDisplayParameters

(

)

const

TextureRange()

const unsigned int ON_MeshParameters::TextureRange

(

)

const

1: unpacked, unscaled, normalized each face has a normalized texture range [0,1]x[0,1]. The normalized coordinate is calculated using the entire surface domain. For meshes of trimmed surfaces when the active area is a small subset of the entire surface, there will be large regions of unused texture space in [0,1]x[0,1]. When the 3d region being meshed is far from being square-ish, there will be a substantial amount of distortion mapping [0,1]x[0,1] texture space to the 3d mesh.

2: packed, scaled, normalized (default) each face is assigned a texture range that is a subrectangle of [0,1]x[0,1]. The subrectangles are mutually disjoint and packed into into [0,1]x[0,1] in a way that minimizes distortion and maximizes the coverage of [0,1]x[0,1]. When the surface or surfaces being meshed are trimmed, this option takes into account only the region of the base surface the mesh covers and uses as much of [0,1]x[0,1] as possible. unsigned int TextureRange() const;

TextureRangeIsValid()

const bool ON_MeshParameters::TextureRangeIsValid

(

)

const

Tolerance()

const double ON_MeshParameters::Tolerance

(

)

const

These controls are used in both stages.

approximate maximum distance from center of edge to surface

ToleranceFromObjectSize()

static double ON_MeshParameters::ToleranceFromObjectSize ( double  relative_tolerance, double  actual_size  )

static

Description: Get a value to use for tolerance based on the relative_tolerance and actual size. Parameters: relative_tolerance - [in] See m_relative_tolerance field actual_size - [in] Length of object's bounding box diagonal or some similar measure of the object's 3d size. Returns: A value that can be used for m_tolerance if no user specified value is available.

Write()

bool ON_MeshParameters::Write

(

ON_BinaryArchive &

)

const

Member Data Documentation

DefaultAnalysisMesh

const ON_MeshParameters ON_MeshParameters::DefaultAnalysisMesh

static

Description: Mesh creation parameters to create the default analysis mesh.

DefaultMesh

const ON_MeshParameters ON_MeshParameters::DefaultMesh

static

Description: Mesh creation parameters to create the default render mesh.

FastRenderMesh

const ON_MeshParameters ON_MeshParameters::FastRenderMesh

static

Description: Mesh creation parameters to create the a render mesh when meshing speed is preferred over mesh quality.

PangolinMesherId

const ON_UUID ON_MeshParameters::PangolinMesherId

static

{EB6F6F3F-F975-4546-9D1C-64E9423BEB7F}

QualityRenderMesh

const ON_MeshParameters ON_MeshParameters::QualityRenderMesh

static

Description: Mesh creation parameters to create the a render mesh when mesh quality is preferred over meshing speed.

RhinoLegacyMesherId

const ON_UUID ON_MeshParameters::RhinoLegacyMesherId

static

surface meshing parameters

The Rhino legacy mesher is the mesher used in Rhino 1, 2, 3, 4, 5, 6. {F15F67AA-4AF9-4B25-A3B8-517CEDDAB134}