#include <opennurbs_beam.h>

Inheritance diagram for ON_Extrusion:

Public Member Functions
	ON_Extrusion ()

	ON_Extrusion (const ON_Extrusion &src)

	~ON_Extrusion ()

bool	AddInnerProfile (ON_Curve *inner_profile)

ON_Brep *	BrepForm (ON_Brep *brep, bool bSmoothFaces) const

ON_Brep *	BrepForm (ON_Brep *brep=nullptr) const override

int	CapCount () const

ON_Mesh *	CreateMesh (const ON_MeshParameters &mp, ON_Mesh *mesh=nullptr) const override

ON__UINT32	DataCRC (ON__UINT32 current_remainder) const override

int	Degree (int dir) const override

void	Destroy ()

void	DestroyMesh (ON::mesh_type mt)

void	DestroyRuntimeCache (bool bDelete=true) override

int	Dimension () const override

ON_Interval	Domain (int dir) const override

void	Dump (ON_TextLog &) const override

bool	Evaluate (double u, double v, int num_der, int array_stride, double der_array, int quadrant=0, int hint=0) const override
	work horse evaluator More...

bool	Extend (int dir, const ON_Interval &domain) override

int	FaceCount () const

bool	GetBBox (double boxmin, double boxmax, bool bGrowBox=false) const override
	virtual ON_Geometry GetBBox override More...

bool	GetBrepFormComponentIndex (ON_COMPONENT_INDEX extrusion_ci, double extrusion_profile_parameter, const ON_Brep &brep_form, ON_COMPONENT_INDEX &brep_ci) const

bool	GetBrepFormComponentIndex (ON_COMPONENT_INDEX extrusion_ci, double extrusion_profile_parameter, const ON_Brep brep_form, bool bSmoothFaces, ON_COMPONENT_INDEX &brep_ci, ON_Interval profile_subdomain) const

bool	GetBrepFormComponentIndex (ON_COMPONENT_INDEX extrusion_ci, double extrusion_profile_parameter, const ON_Brep *brep_form, ON_COMPONENT_INDEX &brep_ci) const

bool	GetBrepFormComponentIndex (ON_COMPONENT_INDEX extrusion_ci, ON_COMPONENT_INDEX &brep_ci) const

bool	GetClosestPoint (const ON_3dPoint &P, double s, double t, double maximum_distance=0.0, const ON_Interval sdomain=0, const ON_Interval tdomain=0) const override

bool	GetLocalClosestPoint (const ON_3dPoint &, double, double, double , double , const ON_Interval =nullptr, const ON_Interval =nullptr) const override

void	GetMiterPlaneNormal (int end, ON_3dVector &N) const

bool	GetNextDiscontinuity (int dir, ON::continuity c, double t0, double t1, double t, int hint=nullptr, int *dtype=nullptr, double cos_angle_tolerance=ON_DEFAULT_ANGLE_TOLERANCE_COSINE, double curvature_tolerance=ON_SQRT_EPSILON) const override

int	GetNurbForm (ON_NurbsSurface &nurbs_surface, double tolerance=0.0) const override

bool	GetNurbFormParameterFromSurfaceParameter (double surface_s, double surface_t, double nurbs_s, double nurbs_t) const override

bool	GetParameterTolerance (int dir, double t, double tminus, double tplus) const override

bool	GetPathPlane (double s, ON_Plane &plane) const

int	GetProfileCurves (ON_SimpleArray< const ON_Curve * > &profile_curves) const

int	GetProfileKinkParameters (int profile_index, ON_SimpleArray< double > &profile_kink_parameters) const

int	GetProfileKinkParameters (int profile_index, ON_SimpleArray< double > *profile_kink_parameters) const

bool	GetProfilePlane (double s, ON_Plane &plane) const

bool	GetProfileTransformation (double s, ON_Xform &xform) const

bool	GetSpanVector (int dir, double *span_vector) const override

bool	GetSpanVectorIndex (int dir, double t, int side, int span_vector_index, ON_Interval span_interval) const override

bool	GetSurfaceParameterFromNurbFormParameter (double nurbs_s, double nurbs_t, double surface_s, double surface_t) const override

bool	GetSurfaceSize (double width, double height) const override

bool	GetTightBoundingBox (class ON_BoundingBox &tight_bbox, bool bGrowBox=false, const class ON_Xform *xform=nullptr) const override
	virtual ON_Geometry GetTightBoundingBox override More...

int	HasNurbForm () const override

int	IsCapped () const

bool	IsClosed (int) const override

bool	IsContinuous (ON::continuity c, double s, double t, int *hint=nullptr, double point_tolerance=ON_ZERO_TOLERANCE, double d1_tolerance=ON_ZERO_TOLERANCE, double d2_tolerance=ON_ZERO_TOLERANCE, double cos_angle_tolerance=ON_DEFAULT_ANGLE_TOLERANCE_COSINE, double curvature_tolerance=ON_SQRT_EPSILON) const override

ISO	IsIsoparametric (const ON_BoundingBox &bbox) const override

ISO	IsIsoparametric (const ON_Curve &curve, const ON_Interval *curve_domain=nullptr) const override

int	IsMitered () const

ON_Curve *	IsoCurve (int dir, double c) const override

bool	IsPeriodic (int) const override

bool	IsPlanar (ON_Plane *plane=nullptr, double tolerance=ON_ZERO_TOLERANCE) const override

bool	IsSolid () const

bool	IsValid (class ON_TextLog *text_log=nullptr) const override

const ON_Mesh *	Mesh (ON::mesh_type mt) const

ON::object_type	ObjectType () const override

ON_Extrusion &	operator= (const ON_Extrusion &)

ON_3dPoint	PathEnd () const

ON_LineCurve *	PathLineCurve (ON_LineCurve *line_curve) const

int	PathParameter () const

ON_3dPoint	PathStart () const

ON_3dVector	PathTangent () const

const ON_PolyCurve *	PolyProfile () const

const ON_Curve *	Profile (int profile_index) const

ON_Curve *	Profile3d (int profile_index, double s) const

ON_Curve *	Profile3d (ON_COMPONENT_INDEX ci) const

int	ProfileCount () const

int	ProfileIndex (double profile_parameter) const

bool	ProfileIsKinked (int profile_index) const

int	ProfileParameter () const

int	ProfileSmoothSegmentCount (int profile_index) const

ON_Curve *	Pullback (const ON_Curve &curve_3d, double tolerance, const ON_Interval curve_3d_subdomain=nullptr, ON_3dPoint start_uv=ON_3dPoint::UnsetPoint, ON_3dPoint end_uv=ON_3dPoint::UnsetPoint, ON_FitResult rc=nullptr) const override

ON_Curve *	Pushup (const ON_Curve &curve_2d, double tolerance, const ON_Interval curve_2d_subdomain=nullptr, ON_FitResult rc=nullptr) const override

bool	Read (ON_BinaryArchive &binary_archive) override

bool	Reverse (int dir) override

bool	SetDomain (int dir, double t0, double t1) override

bool	SetMesh (ON::mesh_type mt, ON_Mesh *mesh)

bool	SetMiterPlaneNormal (ON_3dVector N, int end)

bool	SetOuterProfile (ON_Curve *outer_profile, bool bCap)

bool	SetPath (ON_3dPoint A, ON_3dPoint B)

bool	SetPathAndUp (ON_3dPoint A, ON_3dPoint B, ON_3dVector up)

unsigned int	SizeOf () const override

int	SpanCount (int dir) const override
	number of smooth nonempty spans in the parameter direction More...

bool	Split (int dir, double c, ON_Surface &west_or_south_side, ON_Surface &east_or_north_side) const override

ON_SumSurface *	SumSurfaceForm (ON_SumSurface *sum_surface) const

bool	Transform (const ON_Xform &xform) override

bool	Transpose () override
	transpose surface parameterization (swap "s" and "t") More...

bool	Trim (int dir, const ON_Interval &domain) override

ON_Curve *	WallEdge (ON_COMPONENT_INDEX ci) const

ON_Surface *	WallSurface (ON_COMPONENT_INDEX ci) const

bool	Write (ON_BinaryArchive &binary_archive) const override

Public Member Functions inherited from ON_Surface
	ON_Surface ()

	ON_Surface (const ON_Surface &)

virtual	~ON_Surface ()

bool	AreaMassProperties (class ON_MassProperties &mp, bool bArea=true, bool bFirstMoments=true, bool bSecondMoments=true, bool bProductMoments=true, double rel_tol=1.0e-6, double abs_tol=1.0e-6) const

ON_Brep *	BrepForm (ON_Brep *brep=nullptr) const override

virtual ON_SurfaceTree *	CreateSurfaceTree () const

void	DestroyRuntimeCache (bool bDelete=true) override
	virtual ON_Object::DestroyRuntimeCache override More...

void	DestroySurfaceTree ()

virtual ON_Surface *	DuplicateSurface () const

bool	Ev1Der (double u, double v, ON_3dPoint &point, ON_3dVector &du, ON_3dVector &dv, int quadrant=0, int *hint=0) const

bool	Ev2Der (double u, double v, ON_3dPoint &point, ON_3dVector &du, ON_3dVector &dv, ON_3dVector &duu, ON_3dVector &duv, ON_3dVector &dvv, int quadrant=0, int *hint=0) const

bool	EvaluatePoint (const class ON_ObjRef &objref, ON_3dPoint &P) const override
	virtual ON_Geometry override More...

bool	EvNormal (double u, double v, ON_3dPoint &point, ON_3dVector &du, ON_3dVector &dv, ON_3dVector &normal, int=0, int *=0) const

bool	EvNormal (double u, double v, ON_3dPoint &point, ON_3dVector &normal, int quadrant=0, int *hint=0) const

bool	EvNormal (double u, double v, ON_3dVector &normal, int quadrant=0, int *hint=0) const

bool	EvPoint (double u, double v, ON_3dPoint &point, int quadrant=0, int *hint=0) const

bool	FrameAt (double u, double v, ON_Plane &frame) const

bool	GetDomain (int dir, double t0, double t1) const

int	GetIsoPushupDirection (const ON_Curve &curve_2d, double tolerance, const ON_Interval curve_2d_subdomain, double c, ON_Interval *c3_dom) const

bool	GetSilhouette (const ON_Interval udom, const ON_Interval vdom, const ON_SilhouetteParameters parameters, const ON_PlaneEquation clipping_planes, size_t clipping_plane_count, ON_ClassArray< ON_SIL_EVENT > &silhouettes, ON_ProgressReporter progress, ON_Terminator *terminator) const

ON_Curve *	GetSurfaceParameterFromNurbFormParameter (const ON_Curve &curve3d, const ON_Curve &ns_curve2dX, double fit_tolerance) const

bool	HasBrepForm () const override

int	IntersectPlane (ON_PlaneEquation plane_equation, ON_ClassArray< ON_SSX_EVENT > &x, double intersection_tolerance=0.0, double overlap_tolerance=0.0, double fitting_tolerance=0.0, const ON_Interval surface_udomain=0, const ON_Interval surface_vdomain=0) const

int	IntersectSurface (const ON_Surface surfaceB, ON_ClassArray< ON_SSX_EVENT > &x, double intersection_tolerance=0.0, double overlap_tolerance=0.0, double fitting_tolerance=0.0, const ON_Interval surfaceA_udomain=0, const ON_Interval surfaceA_vdomain=0, const ON_Interval surfaceB_udomain=0, const ON_Interval *surfaceB_vdomain=0) const

int	IsAtSeam (double s, double t) const

bool	IsAtSingularity (double s, double t, bool bExact=true) const

bool	IsCone (ON_Cone *cone=nullptr, double tolerance=ON_ZERO_TOLERANCE) const

bool	IsCylinder (ON_Cylinder *cylinder=nullptr, double tolerance=ON_ZERO_TOLERANCE) const

virtual bool	IsSingular (int) const

bool	IsSolid () const

bool	IsSphere (ON_Sphere *sphere=nullptr, double tolerance=ON_ZERO_TOLERANCE) const

bool	IsTorus (ON_Torus *torus=nullptr, double tolerance=ON_ZERO_TOLERANCE) const

ON_3dVector	NormalAt (double, double) const

ON_NurbsSurface *	NurbsSurface (ON_NurbsSurface pNurbsSurface=nullptr, double tolerance=0.0, const ON_Interval s_subdomain=nullptr, const ON_Interval *t_subdomain=nullptr) const

ON::object_type	ObjectType () const override
	override ON_Object::ObjectType() - returns ON::surface_object More...

virtual ON_Surface *	Offset (double offset_distance, double tolerance, double *max_deviation=nullptr) const

ON_Surface &	operator= (const ON_Surface &)

ON_3dPoint	PointAt (double, double) const
	simple evaluation interface - no error handling More...

bool	SetDomain (int dir, ON_Interval domain)

unsigned int	SizeOf () const override
	virtual ON_Object::SizeOf override More...

const ON_SurfaceTree *	SurfaceTree () const

bool	VolumeMassProperties (class ON_MassProperties &mp, bool bVolume=true, bool bFirstMoments=true, bool bSecondMoments=true, bool bProductMoments=true, ON_3dPoint base_point=ON_3dPoint::UnsetPoint, double rel_tol=1.0e-6, double abs_tol=1.0e-6) const

Public Member Functions inherited from ON_Geometry
	ON_Geometry ()=default

	ON_Geometry (const ON_Geometry &)=default

	~ON_Geometry ()=default

ON_BoundingBox	BoundingBox () const

virtual void	ClearBoundingBox ()

virtual ON_COMPONENT_INDEX	ComponentIndex () const

bool	GetBoundingBox (ON_3dPoint &bbox_min, ON_3dPoint &bbox_max, bool bGrowBox=false) const

bool	GetBoundingBox (ON_BoundingBox &bbox, bool bGrowBox=false) const

virtual bool	IsDeformable () const

virtual bool	IsMorphable () const

bool	IsValid (class ON_TextLog *text_log=nullptr) const override

virtual bool	MakeDeformable ()

virtual bool	Morph (const class ON_SpaceMorph &morph)

ON_Geometry &	operator= (const ON_Geometry &)=default

bool	Rotate (double rotation_angle, const ON_3dVector &rotation_axis, const ON_3dPoint &rotation_center)

bool	Rotate (double sin_angle, double cos_angle, const ON_3dVector &rotation_axis, const ON_3dPoint &rotation_center)

bool	Scale (double scale_factor)

virtual bool	SwapCoordinates (int i, int j)

const ON_BoundingBox	TightBoundingBox () const

bool	Translate (const ON_3dVector &translation_vector)

Public Member Functions inherited from ON_Object
	ON_Object () ON_NOEXCEPT

	ON_Object (const ON_Object &)

virtual	~ON_Object ()

virtual ON_AggregateComponentStatus	AggregateComponentStatus () const

bool	AttachUserData (class ON_UserData *pUserData)

unsigned int	ClearAllComponentStates () const

virtual unsigned int	ClearComponentStates (ON_COMPONENT_INDEX component_index, ON_ComponentStatus states_to_clear) const

virtual unsigned int	ClearComponentStates (ON_ComponentStatus states_to_clear) const

void	CopyUserData (const ON_Object &source_object)

unsigned int	CopyUserData (const ON_Object &source_object, ON_UUID source_userdata_item_id, ON_Object::UserDataConflictResolution userdata_conflict_resolution)

virtual bool	DeleteComponents (const ON_COMPONENT_INDEX *ci_list, size_t ci_count)

bool	DetachUserData (class ON_UserData *pUserData)

void	EmergencyDestroy ()

class ON_UserData *	FirstUserData () const

virtual unsigned int	GetComponentsWithSetStates (ON_ComponentStatus states_filter, bool bAllEqualStates, ON_SimpleArray< ON_COMPONENT_INDEX > &components) const

class ON_UserData *	GetUserData (const ON_UUID &userdata_uuid) const

bool	GetUserString (const wchar_t *key, ON_wString &string_value) const

int	GetUserStringKeys (ON_ClassArray< ON_wString > &user_string_keys) const

int	GetUserStrings (ON_ClassArray< ON_UserString > &user_strings) const

bool	IsCorrupt (bool bRepair, bool bSilentError, class ON_TextLog *text_log) const

bool	IsKindOf (const ON_ClassId *pClassId) const

virtual void	MarkAggregateComponentStatusAsNotCurrent () const

virtual void	MemoryRelocate ()

virtual ON_UUID	ModelObjectId () const

void	MoveUserData (ON_Object &source_object)

unsigned int	MoveUserData (ON_Object &source_object, ON_UUID source_userdata_item_id, ON_Object::UserDataConflictResolution userdata_conflict_resolution, bool bDeleteAllSourceItems)

ON_Object &	operator= (const ON_Object &)

void	PurgeUserData ()

virtual unsigned int	SetComponentStates (ON_COMPONENT_INDEX component_index, ON_ComponentStatus states_to_set) const

virtual unsigned int	SetComponentStatus (ON_COMPONENT_INDEX component_index, ON_ComponentStatus status_to_copy) const

bool	SetUserString (const wchar_t key, const wchar_t string_value)

int	SetUserStrings (int count, const ON_UserString *user_strings, bool bReplace)

bool	ThisIsNullptr (bool bSilentError) const

void	TransformUserData (const class ON_Xform &xform)

virtual bool	UpdateReferencedComponents (const class ON_ComponentManifest &source_manifest, const class ON_ComponentManifest &destination_manifest, const class ON_ManifestMap &manifest_map)

int	UserStringCount () const

Static Public Member Functions
static bool	CleanupPolyCurveProfile (ON_PolyCurve &polycurve)

static ON_Extrusion *	CreateFrom3dCurve (const ON_Curve &curve, const ON_Plane plane, double height, bool bCap, ON_Extrusion extrusion=0)

static ON_Extrusion *	Cylinder (const ON_Cylinder &cylinder, bool bCapBottom, bool bCapTop, ON_Extrusion *extrusion=0)

static bool	IsValidPolyCurveProfile (const ON_PolyCurve &polycurve, ON_TextLog *text_log=0)

static ON_Extrusion *	Pipe (const ON_Cylinder &cylinder, double other_radius, bool bCapBottom, bool bCapTop, ON_Extrusion *extrusion=0)

Static Public Member Functions inherited from ON_Surface
static class ON_NurbsSurface *	CreateCubicLoft (int curve_count, const ON_Curve const curve_list, double k, int is_closed=0, ON::cubic_loft_end_condition start_shape=ON::cubic_loft_ec_quadratic, ON::cubic_loft_end_condition end_shape=ON::cubic_loft_ec_quadratic, class ON_NurbsSurface *nurbs_surface=0)

static class ON_NurbsSurface *	CreateLinearLoft (int curve_count, const ON_Curve const curve_list, double k, int is_closed=0, class ON_NurbsSurface *nurbs_surface=0)

Public Attributes
bool	m_bCap [2]

bool	m_bHaveN [2]

bool	m_bTransposed
	false: (s,t) = (profile,path) More...

ON_MeshCache	m_mesh_cache = ON_MeshCache::Empty
	Cached meshes used for rendering, analysis, ... More...

ON_3dVector	m_N [2]

ON_Line	m_path

ON_Interval	m_path_domain
	Surface parameterization information. More...

ON_Curve *	m_profile

int	m_profile_count

ON_Interval	m_t

ON_3dVector	m_up

Static Public Attributes
static const double	m_Nz_min
	1/64; More...

static const double	m_path_length_min
	ON_ZERO_TOLERANCE;. More...

Static Public Attributes inherited from ON_Geometry
const static ON_Geometry	Unset

Additional Inherited Members
Public Types inherited from ON_Surface
enum	ISO { not_iso = 0, x_iso = 1, y_iso = 2, W_iso = 3, S_iso = 4, E_iso = 5, N_iso = 6, iso_count = 7 }
	pure virtual class for surface objects More...

Public Types inherited from ON_Object
enum	UserDataConflictResolution : unsigned char { UserDataConflictResolution::destination_object = 0, UserDataConflictResolution::source_object = 1, UserDataConflictResolution::source_copycount_gt = 2, UserDataConflictResolution::source_copycount_ge = 3, UserDataConflictResolution::destination_copycount_gt = 4, UserDataConflictResolution::destination_copycount_ge = 5, UserDataConflictResolution::delete_item = 6 }

Protected Member Functions inherited from ON_Surface
ON_Curve *	PullbackCurveProxy (const ON_CurveProxy &curveproxy_3d, double tolerance, const ON_Interval curve_3d_subdomain, ON_3dPoint start_uv, ON_3dPoint end_uv, ON_FitResult rc) const
	Helper for ON_Surface::Pullback overrides that handles "real" curve issues. More...

ON_Curve *	PullbackPolyCurve (const ON_PolyCurve &polycurve_3d, double tolerance, const ON_Interval curve_3d_subdomain, ON_3dPoint start_uv, ON_3dPoint end_uv, ON_FitResult rc) const

ON_Curve *	PushupCurveProxy (const ON_CurveProxy &curveproxy_2d, double tolerance, const ON_Interval curve_2d_subdomain, ON_FitResult rc) const
	Helper for ON_Surface::Pushup overrides that handles "real" curve issues. More...

ON_Curve *	PushupPolyCurve (const ON_PolyCurve &polycurve_2d, double tolerance, const ON_Interval curve_2d_subdomain, ON_FitResult rc) const

Constructor & Destructor Documentation

◆ ON_Extrusion() [1/2]

ON_Extrusion::ON_Extrusion ( )

◆ ON_Extrusion() [2/2]

ON_Extrusion::ON_Extrusion ( const ON_Extrusion & src )

◆ ~ON_Extrusion()

ON_Extrusion::~ON_Extrusion ( )

Member Function Documentation

◆ AddInnerProfile()

bool ON_Extrusion::AddInnerProfile ( ON_Curve * inner_profile )

Description: Add an inner profile. Parameters: inner_profile - [in] closed curve in the xy plane or a 2d curve. Returns: True if the profile was set. In this case the ON_Extrusion class manages the curve and ~ON_Extrusion will delete it. The extrusion must already have an outer profile. If the extrusion already has a profile, the set will fail. Remarks: If needed, innter_profile will be converted to a 2d curve. If inner_profile is not correctly oriented, it will be reversed so it has a clockwise orientation.

◆ BrepForm() [1/2]

ON_Brep* ON_Extrusion::BrepForm	(	ON_Brep *	brep,
		bool	bSmoothFaces
	)		const

Description: Build a brep form of the extrusion. The outer profile is always the first face in the brep. If there are inner profiles, additional brep faces are created for each profile. If the outer profile is closed, then end caps are added as the last two faces in the brep. Parameters: brep - [in] If the brep pointer is not null, then the brep form is constructed in brep. If the brep pointer is null, then an ON_Brep is allocated on the heap. bSmoothFaces - [in] If true and the profiles have kinks, then the faces corresponding to those profiles are split so they will be G1. Returns: If successful, a pointer to the brep form. If unsuccessful, null.

◆ BrepForm() [2/2]

ON_Brep* ON_Extrusion::BrepForm ( ON_Brep * brep = nullptr ) const

overridevirtual

Description: Build a brep form of the extrusion. The outer profile is always the first face in the brep. If there are inner profiles, additional brep faces are created for each profile. If the outer profile is closed, then end caps are added as the last two faces in the brep. Parameters: brep - [in] If the brep pointer is not null, then the brep form is constructed in brep. If the brep pointer is null, then an ON_Brep is allocated on the heap. Returns: If successful, a pointer to the brep form. If unsuccessful, null.

Reimplemented from ON_Geometry.

◆ CapCount()

int ON_Extrusion::CapCount ( ) const

Returns: 0: no caps 1: exrusion has either a top cap or a bottom cap 2: both ends are capped. See Also: ON_Extrusion::ProfileCount() ON_Extrusion::ProfileSmoothSegmentCount()

◆ CleanupPolyCurveProfile()

static bool ON_Extrusion::CleanupPolyCurveProfile ( ON_PolyCurve & polycurve )

static

Description: If possible, modify a polycurve so it meets the necessary conditions to be used as a multi-segment profile in a extrusion. Returns: True if the returned polycurve can be used a a multi-segment profile in a extrusion.

◆ CreateFrom3dCurve()

static ON_Extrusion* ON_Extrusion::CreateFrom3dCurve	(	const ON_Curve &	curve,
		const ON_Plane *	plane,
		double	height,
		bool	bCap,
		ON_Extrusion *	extrusion = `0`
	)

static

Description: Create an ON_Exrusion from a 3d curve, a plane and a height. Parameters: curve - [in] A continuous 3d curve. plane - [in] If plane is null, then the plane returned by curve.IsPlanar() is used. The 3d curve is projected to this plane and the result is passed to ON_Extrusion::SetOuterProfile(). height - [in] If the height > 0, the bottom of the extrusion will be in plane and the top will be height units above the plane. If the height < 0, the top of the extrusion will be in plane and the bottom will be height units below the plane. bCap - [in] If the curve is closed and bCap is true, then the resulting extrusion is capped. extrusion - [in] If the input extrusion pointer is null, one will be allocated on the heap and it is the caller's responsibility to delete it at an appropriate time. If the input pointer is not null, this extrusion will be used and the same pointer will be returned, provided the input is valid. Returns: If the input is valid, a pointer to an ON_Exrusion form of the pipe. If the input is not valid, then null, even when the input extrusion object is not null.

◆ CreateMesh()

ON_Mesh* ON_Extrusion::CreateMesh	(	const ON_MeshParameters &	mp,
		ON_Mesh *	mesh = `nullptr`
	)		const

overridevirtual

overrides of virtual ON_Surface functions

Reimplemented from ON_Surface.

◆ Cylinder()

static ON_Extrusion* ON_Extrusion::Cylinder	(	const ON_Cylinder &	cylinder,
		bool	bCapBottom,
		bool	bCapTop,
		ON_Extrusion *	extrusion = `0`
	)

static

Description: Get an ON_Exrusion form of a cylinder. Parameters: cylinder - [in] cylinder.IsFinite() must be true bCapBottom - [in] if true, the end at cylinder.m_height[0] will be capped bCapTop - [in] if true, the end at cylinder.m_height[1] will be capped extrusion - [in] If the input extrusion pointer is null, one will be allocated on the heap and it is the caller's responsibility to delete it at an appropriate time. If the input pointer is not null, this extrusion will be used and the same pointer will be returned, provided the input is valid. Returns: If the input is valid, a pointer to an ON_Exrusion form of the cylinder. If the input is not valid, then null, even when the input extrusion object is not null. Example:

    ON_Cylinder cylinder = ...;
    bool bCapBottom = true;
    bool bCapTop = true;
    ON_Extrusion extrusion;
    if ( 0 == ON_Extrusion::Cylinder(cylinder,bCapBottom,bCapTop,&extrusion) )
    {

/ input is not valid - nothing set ... } else { / extrusion = cylinder ... }

◆ DataCRC()

ON__UINT32 ON_Extrusion::DataCRC ( ON__UINT32 current_remainder ) const

overridevirtual

Description: Returns a CRC calculated from the information that defines the object. This CRC can be used as a quick way to see if two objects are not identical. Parameters: current_remainder - [in]; Returns: CRC of the information the defines the object.

Reimplemented from ON_Object.

◆ Degree()

int ON_Extrusion::Degree ( int dir ) const

overridevirtual

Implements ON_Surface.

◆ Destroy()

void ON_Extrusion::Destroy ( )

ON_Extrusion interface

◆ DestroyMesh()

void ON_Extrusion::DestroyMesh ( ON::mesh_type mt )

Description: Destroy a mesh attached to the ON_Extrusion. Parameters: mt - [in] type of mesh to destroy If mt is ON::default_mesh or ON::any_mesh, then all attached meshes of all types are destroyed. bDeleteMesh - [in] if true, cached mesh is deleted. If false, pointer to cached mesh is just set to null.

◆ DestroyRuntimeCache()

void ON_Extrusion::DestroyRuntimeCache ( bool bDelete = true )

overridevirtual

overrides of virtual ON_Object functions

Reimplemented from ON_Object.

◆ Dimension()

int ON_Extrusion::Dimension ( ) const

overridevirtual

overrides of virtual ON_Geometry functions

Reimplemented from ON_Geometry.

◆ Domain()

ON_Interval ON_Extrusion::Domain ( int dir ) const

overridevirtual

Implements ON_Surface.

◆ Dump()

void ON_Extrusion::Dump ( ON_TextLog & ) const

overridevirtual

Description: Creates a text dump of the object. Remarks: Dump() is intended for debugging and is not suitable for creating high quality text descriptions of an object.

The default implementations of this virtual function prints the class's name.

Reimplemented from ON_Object.

◆ Evaluate()

bool ON_Extrusion::Evaluate	(	double	u,
		double	v,
		int	num_der,
		int	array_stride,
		double *	der_array,
		int	quadrant = `0`,
		int *	hint = `0`
	)		const

overridevirtual

work horse evaluator

Parameters

u	returns false if unable to evaluate
v	evaluation parameters
num_der	number of derivatives (>=0)
array_stride	array stride (>=Dimension())
der_array	array of length stride(ndir+1)(ndir+2)/2
quadrant	optional - determines which quadrant to evaluate from 0 = default 1 from NE quadrant 2 from NW quadrant 3 from SW quadrant 4 from SE quadrant
hint	optional - evaluation hint (int[2]) used to speed repeated evaluations

Implements ON_Surface.

◆ Extend()

bool ON_Extrusion::Extend	(	int	dir,
		const ON_Interval &	domain
	)

overridevirtual

Description: Pure virtual function. Default returns false. Where possible, analytically extends surface to include domain. Parameters: dir - [in] 0 new Domain(0) will include domain. (the first surface parameter). 1 new Domain(1) will include domain. (the second surface parameter). domain - [in] if domain is not included in surface domain, surface will be extended so that its domain includes domain.
Will not work if surface is closed in direction dir. Original surface is identical to the restriction of the resulting surface to the original surface domain, Returns: true if successful.

Reimplemented from ON_Surface.

◆ FaceCount()

int ON_Extrusion::FaceCount ( ) const

Description: Deprecated function.

Use CapCount() to determine how many end caps there are. Use ProfileCount() to determine how many profiles there are. Use ProfileSmoothSegmentCount() to determine how many smooth subsegments are in a profile. Each smooth subsegment becomes a wall face in the brep form.

Returns: Number of "faces" the extrusion has. 0: extrusion is not valid 1: extrusion is not capped 2: extrusion has a closed outer profile and one cap 3: extrusion has a closed outer profile and two caps

Remarks: This function was written before extrusions supported "holes" and before the brep form was divided at profile creases. At this point it simply leads to confusion. See the Description function replacements.

Deprecated:: Use CapCount(), ProfileCount(), or ProfileSmoothSegmentCount()

◆ GetBBox()

bool ON_Extrusion::GetBBox	(	double *	boxmin,
		double *	boxmax,
		bool	bGrowBox = `false`
	)		const

overridevirtual

virtual ON_Geometry GetBBox override

Reimplemented from ON_Geometry.

◆ GetBrepFormComponentIndex() [1/4]

bool ON_Extrusion::GetBrepFormComponentIndex	(	ON_COMPONENT_INDEX	extrusion_ci,
		double	extrusion_profile_parameter,
		const ON_Brep &	brep_form,
		ON_COMPONENT_INDEX &	brep_ci
	)		const

◆ GetBrepFormComponentIndex() [2/4]

bool ON_Extrusion::GetBrepFormComponentIndex	(	ON_COMPONENT_INDEX	extrusion_ci,
		double	extrusion_profile_parameter,
		const ON_Brep *	brep_form,
		bool	bSmoothFaces,
		ON_COMPONENT_INDEX &	brep_ci,
		ON_Interval *	profile_subdomain
	)		const

◆ GetBrepFormComponentIndex() [3/4]

bool ON_Extrusion::GetBrepFormComponentIndex	(	ON_COMPONENT_INDEX	extrusion_ci,
		double	extrusion_profile_parameter,
		const ON_Brep *	brep_form,
		ON_COMPONENT_INDEX &	brep_ci
	)		const

◆ GetBrepFormComponentIndex() [4/4]

bool ON_Extrusion::GetBrepFormComponentIndex	(	ON_COMPONENT_INDEX	extrusion_ci,
		ON_COMPONENT_INDEX &	brep_ci
	)		const

Description: Convert a component index that identifies a part of this extrusion to a component index that identifies a part of the brep created by BrepForm(...,false). Parameters: extrusion_ci - [in] extrusion_profile_parameter - [in] brep_form - [in] brep created by ON_Extrusion::BrepForm() bSmoothFaces - [in] If true and the profiles have kinks, then the faces corresponding to those profiles are split so they will be G1. brep_ci - [out] profile_subdomain - [out] The subdomain of the profile that contributes to the brep form component index Returns: True if successful. False if input is not valid, in which case brep_ci is set by calling ON_COMPONENT_INDEX::UnSet(). Remarks: If the wall surfaces have creases, then this function cannot be used to identify brep components created by BrepForm(...,true).

◆ GetClosestPoint()

bool ON_Extrusion::GetClosestPoint	(	const ON_3dPoint &	P,
		double *	s,
		double *	t,
		double	maximum_distance = `0.0`,
		const ON_Interval *	sdomain = `0`,
		const ON_Interval *	tdomain = `0`
	)		const

overridevirtual

Description: Get the parameters of the point on the surface that is closest to P. Parameters: P - [in] test point s - [out] t - [out] (*s,*t) = parameters of the surface point that is closest to P. maximum_distance = 0.0 - [in] optional upper bound on the distance from P to the surface. If you are only interested in finding a point Q on the surface when P.DistanceTo(Q) < maximum_distance, then set maximum_distance to that value. sdomain = 0 - [in] optional domain restriction tdomain = 0 - [in] optional domain restriction Returns: True if successful. If false, the values of *s and *t are undefined. See Also: ON_Surface::GetLocalClosestPoint.

Reimplemented from ON_Surface.

◆ GetLocalClosestPoint()

bool ON_Extrusion::GetLocalClosestPoint	(	const ON_3dPoint &	,
		double	,
		double	,
		double *	,
		double *	,
		const ON_Interval *	= `nullptr`,
		const ON_Interval *	= `nullptr`
	)		const

overridevirtual

Find parameters of the point on a surface that is locally closest to the test_point. The search for a local close point starts at seed parameters. If a sub_domain parameter is not nullptr, then the search is restricted to the specified portion of the surface.

true if returned if the search is successful. false is returned if the search fails.

Reimplemented from ON_Surface.

◆ GetMiterPlaneNormal()

void ON_Extrusion::GetMiterPlaneNormal	(	int	end,
		ON_3dVector &	N
	)		const

◆ GetNextDiscontinuity()

bool ON_Extrusion::GetNextDiscontinuity	(	int	dir,
		ON::continuity	c,
		double	t0,
		double	t1,
		double *	t,
		int *	hint = `nullptr`,
		int *	dtype = `nullptr`,
		double	cos_angle_tolerance = `ON_DEFAULT_ANGLE_TOLERANCE_COSINE`,
		double	curvature_tolerance = `ON_SQRT_EPSILON`
	)		const

overridevirtual

Description: Search for a derivatitive, tangent, or curvature discontinuity. Parameters: dir - [in] If 0, then "u" parameter is checked. If 1, then the "v" parameter is checked. c - [in] type of continity to test for. t0 - [in] Search begins at t0. If there is a discontinuity at t0, it will be ignored. This makes it possible to repeatedly call GetNextDiscontinuity and step through the discontinuities. t1 - [in] (t0 != t1) If there is a discontinuity at t1 is will be ignored unless c is a locus discontinuity type and t1 is at the start or end of the curve. t - [out] if a discontinuity is found, then *t reports the parameter at the discontinuity. hint - [in/out] if GetNextDiscontinuity will be called repeatedly, passing a "hint" with initial value *hint=0 will increase the speed of the search.
dtype - [out] if not nullptr, *dtype reports the kind of discontinuity found at *t. A value of 1 means the first derivative or unit tangent was discontinuous. A value of 2 means the second derivative or curvature was discontinuous. A value of 0 means the curve is not closed, a locus discontinuity test was applied, and t1 is at the start of end of the curve. cos_angle_tolerance - [in] default = cos(1 degree) Used only when c is ON::continuity::G1_continuous or ON::continuity::G2_continuous. If the cosine of the angle between two tangent vectors is <= cos_angle_tolerance, then a G1 discontinuity is reported. curvature_tolerance - [in] (default = ON_SQRT_EPSILON) Used only when c is ON::continuity::G2_continuous. If K0 and K1 are curvatures evaluated from above and below and |K0 - K1| > curvature_tolerance, then a curvature discontinuity is reported. Returns: Parametric continuity tests c = (C0_continuous, ..., G2_continuous):

true if a parametric discontinuity was found strictly between t0 and t1. Note well that all curves are parametrically continuous at the ends of their domains.

Locus continuity tests c = (C0_locus_continuous, ...,G2_locus_continuous):

true if a locus discontinuity was found strictly between t0 and t1 or at t1 is the at the end of a curve. Note well that all open curves (IsClosed()=false) are locus discontinuous at the ends of their domains. All closed curves (IsClosed()=true) are at least C0_locus_continuous at the ends of their domains.

Reimplemented from ON_Surface.

◆ GetNurbForm()

int ON_Extrusion::GetNurbForm	(	ON_NurbsSurface &	nurbs_surface,
		double	tolerance = `0.0`
	)		const

overridevirtual

ON_Surface* Offset( double offset_distance, double tolerance, double* max_deviation = nullptr ) const;

Reimplemented from ON_Surface.

◆ GetNurbFormParameterFromSurfaceParameter()

bool ON_Extrusion::GetNurbFormParameterFromSurfaceParameter	(	double	surface_s,
		double	surface_t,
		double *	nurbs_s,
		double *	nurbs_t
	)		const

overridevirtual

Reimplemented from ON_Surface.

◆ GetParameterTolerance()

bool ON_Extrusion::GetParameterTolerance	(	int	dir,
		double	t,
		double *	tminus,
		double *	tplus
	)		const

overridevirtual

Reimplemented from ON_Surface.

◆ GetPathPlane()

bool ON_Extrusion::GetPathPlane	(	double	s,
		ON_Plane &	plane
	)		const

Description: Get the the 3d plane perpendicular to the path at a normalized path parameter. Parameters: s - [in] 0.0 = starting plane 1.0 = ending plane plane - [out] Plane is returned here. If false is returned, then the input value of plane is not changed. Returns: true if plane was set. False if this is invalid and plane could not be set. Remarks: When no mitering is happening, GetPathPlane() and GetProfilePlane() return the same plane.

◆ GetProfileCurves()

int ON_Extrusion::GetProfileCurves ( ON_SimpleArray< const ON_Curve * > & profile_curves ) const

Description: Get a list of the 2d profile curves. Returns: Number of curves appended to the list.

◆ GetProfileKinkParameters() [1/2]

int ON_Extrusion::GetProfileKinkParameters	(	int	profile_index,
		ON_SimpleArray< double > &	profile_kink_parameters
	)		const

Description: Get the parameters where a profile curve has kinks. Parameters: profile_index - [in] profile_kink_parameters - [out] parameters at internal kinks are appended to this array. Returns: Number of parameters appended to profile_kink_parameters[] Remarks: This function is used when making the brep form that has smooth faces.

◆ GetProfileKinkParameters() [2/2]

int ON_Extrusion::GetProfileKinkParameters	(	int	profile_index,
		ON_SimpleArray< double > *	profile_kink_parameters
	)		const

◆ GetProfilePlane()

bool ON_Extrusion::GetProfilePlane	(	double	s,
		ON_Plane &	plane
	)		const

Description: Get the the 3d plane containing the profile curve at a normalized path parameter. Parameters: s - [in] 0.0 = starting plane 1.0 = ending plane plane - [out] Plane containing profile is returned in plane. If false is returned, then the input value of plane is not changed. Returns: true if plane was set. False if this is invalid and plane could not be set. Remarks: When no mitering is happening, GetPathPlane() and GetProfilePlane() return the same plane.

◆ GetProfileTransformation()

bool ON_Extrusion::GetProfileTransformation	(	double	s,
		ON_Xform &	xform
	)		const

Description: Get the transformation that maps the xy profile curve to its 3d location. Parameters: s - [in] 0.0 = starting profile 1.0 = ending profile

◆ GetSpanVector()

bool ON_Extrusion::GetSpanVector	(	int	dir,
		double *	span_vector
	)		const

overridevirtual

Implements ON_Surface.

◆ GetSpanVectorIndex()

bool ON_Extrusion::GetSpanVectorIndex	(	int	dir,
		double	t,
		int	side,
		int *	span_vector_index,
		ON_Interval *	span_interval
	)		const

overridevirtual

If t is in the domain of the surface, GetSpanVectorIndex() returns the span vector index "i" such that span_vector[i] <= t <= span_vector[i+1]. The "side" parameter determines which span is selected when t is at the end of a span.

Parameters

	dir	0 gets first parameter's domain, 1 gets second parameter's domain
[in]	t	[IN] t = evaluation parameter
[in]	side	[IN] side 0 = default, -1 = from below, +1 = from above
[out]	span_vector_index	[OUT] span vector index
[out]	span_interval	[OUT] domain of the span containing "t"

Reimplemented from ON_Surface.

◆ GetSurfaceParameterFromNurbFormParameter()

bool ON_Extrusion::GetSurfaceParameterFromNurbFormParameter	(	double	nurbs_s,
		double	nurbs_t,
		double *	surface_s,
		double *	surface_t
	)		const

overridevirtual

Reimplemented from ON_Surface.

◆ GetSurfaceSize()

bool ON_Extrusion::GetSurfaceSize	(	double *	width,
		double *	height
	)		const

overridevirtual

Description: Get an estimate of the size of the rectangle that would be created if the 3d surface where flattened into a rectangle. Parameters: width - [out] (corresponds to the first surface parameter) height - [out] (corresponds to the first surface parameter) Example:

/ Reparameterize a surface to minimize distortion / in the map from parameter space to 3d. ON_Surface* surf = ...; double width, height; if ( surf->GetSurfaceSize( &width, &height ) ) { srf->SetDomain( 0, ON_Interval( 0.0, width ) ); srf->SetDomain( 1, ON_Interval( 0.0, height ) ); }

Returns: true if successful.

Reimplemented from ON_Surface.

◆ GetTightBoundingBox()

bool ON_Extrusion::GetTightBoundingBox	(	class ON_BoundingBox &	tight_bbox,
		bool	bGrowBox = `false`,
		const class ON_Xform *	xform = `nullptr`
	)		const

overridevirtual

virtual ON_Geometry GetTightBoundingBox override

Reimplemented from ON_Geometry.

◆ HasNurbForm()

int ON_Extrusion::HasNurbForm ( ) const

overridevirtual

Description: Is there a NURBS surface representation of this surface. Parameters: Returns: 0 unable to create NURBS representation with desired accuracy. 1 success - NURBS parameterization matches the surface's 2 success - NURBS point locus matches the surface's and the domain of the NURBS surface is correct.
However, This surface's parameterization and the NURBS surface parameterization may not match. This situation happens when getting NURBS representations of surfaces that have a transendental parameterization like spheres, cylinders, and cones. Remarks: This is a low-level virtual function. See Also: ON_Surface::GetNurbForm ON_Surface::NurbsSurface

Reimplemented from ON_Surface.

◆ IsCapped()

int ON_Extrusion::IsCapped ( ) const

Returns: 0: no or profile is open 1: bottom cap 2: top cap 3: both ends capped.

◆ IsClosed()

bool ON_Extrusion::IsClosed ( int ) const

overridevirtual

Reimplemented from ON_Surface.

◆ IsContinuous()

bool ON_Extrusion::IsContinuous	(	ON::continuity	c,
		double	s,
		double	t,
		int *	hint = `nullptr`,
		double	point_tolerance = `ON_ZERO_TOLERANCE`,
		double	d1_tolerance = `ON_ZERO_TOLERANCE`,
		double	d2_tolerance = `ON_ZERO_TOLERANCE`,
		double	cos_angle_tolerance = `ON_DEFAULT_ANGLE_TOLERANCE_COSINE`,
		double	curvature_tolerance = `ON_SQRT_EPSILON`
	)		const

overridevirtual

Description: Test continuity at a surface parameter value. Parameters: c - [in] continuity to test for s - [in] surface parameter to test t - [in] surface parameter to test hint - [in] evaluation hint point_tolerance - [in] if the distance between two points is greater than point_tolerance, then the surface is not C0. d1_tolerance - [in] if the difference between two first derivatives is greater than d1_tolerance, then the surface is not C1. d2_tolerance - [in] if the difference between two second derivatives is greater than d2_tolerance, then the surface is not C2. cos_angle_tolerance - [in] default = cos(1 degree) Used only when c is ON::continuity::G1_continuous or ON::continuity::G2_continuous. If the cosine of the angle between two normal vectors is <= cos_angle_tolerance, then a G1 discontinuity is reported. curvature_tolerance - [in] (default = ON_SQRT_EPSILON) Used only when c is ON::continuity::G2_continuous. If K0 and K1 are curvatures evaluated from above and below and |K0 - K1| > curvature_tolerance, then a curvature discontinuity is reported. Returns: true if the surface has at least the c type continuity at the parameter t.

Reimplemented from ON_Surface.

◆ IsIsoparametric() [1/2]

ISO ON_Extrusion::IsIsoparametric ( const ON_BoundingBox & bbox ) const

overridevirtual

Description: Test a 2d bounding box to see if it is iso parameteric in the surface's parameter space. Parameters: bbox - [in] bounding box to test Returns: Isoparametric status of the bounding box. Remarks: Because it may transpose domains, ON_SurfaceProxy overrides this function. All other surface classes just use the base class implementation.

Reimplemented from ON_Surface.

◆ IsIsoparametric() [2/2]

ISO ON_Extrusion::IsIsoparametric	(	const ON_Curve &	curve,
		const ON_Interval *	curve_domain = `nullptr`
	)		const

overridevirtual

Description: Test a 2d curve to see if it is iso parameteric in the surface's parameter space. Parameters: curve - [in] curve to test curve_domain = [in] optional sub domain of the curve Returns: Isoparametric status of the curve. Remarks: Because it may transpose domains, ON_SurfaceProxy overrides this function. All other surface classes just use the base class implementation.

Reimplemented from ON_Surface.

◆ IsMitered()

int ON_Extrusion::IsMitered ( ) const

Returns: 0: not mitered. 1: start of path is mitered. 2: end of path is mitered. 3: start and end are mitered.

◆ IsoCurve()

ON_Curve* ON_Extrusion::IsoCurve	(	int	dir,
		double	c
	)		const

overridevirtual

Description: Get isoparametric curve. Parameters: dir - [in] 0 first parameter varies and second parameter is constant e.g., point on IsoCurve(0,c) at t is srf(t,c) This is a horizontal line from left to right 1 first parameter is constant and second parameter varies e.g., point on IsoCurve(1,c) at t is srf(c,t This is a vertical line from bottom to top

c - [in] value of constant parameter Returns: Isoparametric curve. Remarks: In this function "dir" indicates which direction the resulting curve runs. 0: horizontal, 1: vertical In the other ON_Surface functions that take a "dir" argument, "dir" indicates if "c" is a "u" or "v" parameter.

Reimplemented from ON_Surface.

◆ IsPeriodic()

bool ON_Extrusion::IsPeriodic ( int ) const

overridevirtual

Reimplemented from ON_Surface.

◆ IsPlanar()

bool ON_Extrusion::IsPlanar	(	ON_Plane *	plane = `nullptr`,
		double	tolerance = `ON_ZERO_TOLERANCE`
	)		const

overridevirtual

Description: Test a surface to see if it is planar. Parameters: plane - [out] if not nullptr and true is returned, the plane parameters are filled in. tolerance - [in] tolerance to use when checking Returns: true if there is a plane such that the maximum distance from the surface to the plane is <= tolerance.

Reimplemented from ON_Surface.

◆ IsSolid()

bool ON_Extrusion::IsSolid ( ) const

Returns: True if extrusion object is a capped solid.

◆ IsValid()

bool ON_Extrusion::IsValid ( class ON_TextLog * text_log = nullptr ) const

overridevirtual

Description: Tests an object to see if its data members are correctly initialized. Parameters: text_log - [in] if the object is not valid and text_log is not nullptr, then a brief englis description of the reason the object is not valid is appened to the log. The information appended to text_log is suitable for low-level debugging purposes by programmers and is not intended to be useful as a high level user interface tool. Returns: @untitled table true object is valid false object is invalid, uninitialized, etc.

Reimplemented from ON_Object.

◆ IsValidPolyCurveProfile()

static bool ON_Extrusion::IsValidPolyCurveProfile	(	const ON_PolyCurve &	polycurve,
		ON_TextLog *	text_log = `0`
	)

static

Description: Test a polycurve to determine if it meets the necessary conditions to be used as a multi-segment profile in a extrusion. Returns: True if the returned polycurve can be used a a multi-segment profile in a extrusion.

◆ Mesh()

const ON_Mesh* ON_Extrusion::Mesh ( ON::mesh_type mt ) const

Description: Get a mesh attached to the ON_Extrusion. Parameters: mt - [in] type of mesh to get. ON::render_mesh, ON::analysis_mesh and ON::preview_mesh remove the meshes of those types. If mt is ON::default_mesh or ON::any_mesh, then the first non null mesh is returned. Returns: A pointer to a mesh on the ON_Extusion object.
This mesh will be deleted by ~ON_Extrusion(). If a mesh of the requested type is not available, then null is returned.

◆ ObjectType()

ON::object_type ON_Extrusion::ObjectType ( ) const

overridevirtual

Description: Useful for switch statements that need to differentiate between basic object types like points, curves, surfaces, and so on.

Returns: ON::object_type enum value.

Remarks: The default implementation of this virtual function returns ON::unknown_object_type

Reimplemented from ON_Object.

◆ operator=()

ON_Extrusion& ON_Extrusion::operator= ( const ON_Extrusion & )

◆ PathEnd()

ON_3dPoint ON_Extrusion::PathEnd ( ) const

◆ PathLineCurve()

ON_LineCurve* ON_Extrusion::PathLineCurve ( ON_LineCurve * line_curve ) const

Parameters: line_curve - [in] If null, a line curve will be allocated using new. Returns: Null if the extrusion path is not valid. Otherwise a pointer to an ON_LineCurve that is set to the extrusion's path. The caller must delete this curve.

◆ PathParameter()

int ON_Extrusion::PathParameter ( ) const

Description: Get the surface parameter for the path. Returns: 0: The first surface parameter corresponds to the path direction. (m_bTransposed = true) 1: The second surface parameter corresponds to the path direction. (m_bTransposed = false) Remarks: The default ON_Extrusion constructor sets m_bTransposed = false which corresponds to the 1 = PathParameter().

◆ PathStart()

ON_3dPoint ON_Extrusion::PathStart ( ) const

◆ PathTangent()

ON_3dVector ON_Extrusion::PathTangent ( ) const

◆ Pipe()

static ON_Extrusion* ON_Extrusion::Pipe	(	const ON_Cylinder &	cylinder,
		double	other_radius,
		bool	bCapBottom,
		bool	bCapTop,
		ON_Extrusion *	extrusion = `0`
	)

static

Description: Get an ON_Exrusion form of a pipe. Parameters: cylinder - [in] cylinder.IsFinite() must be true The cylinder can be either the inner or outer wall of the pipe. other_radius - in If cylinder.Radius() < other_radius, then the cylinder will be the inside of the pipe. If cylinder.Radius() > other_radius, then the cylinder will be the outside of the pipe. bCapBottom - [in] if true, the end at cylinder.m_height[0] will be capped bCapTop - [in] if true, the end at cylinder.m_height[1] will be capped extrusion - [in] If the input extrusion pointer is null, one will be allocated on the heap and it is the caller's responsibility to delete it at an appropriate time. If the input pointer is not null, this extrusion will be used and the same pointer will be returned, provided the input is valid. Returns: If the input is valid, a pointer to an ON_Exrusion form of the pipe. If the input is not valid, then null, even when the input extrusion object is not null. Example:

    ON_Cylinder cylinder = ...;
    double other_radius = cylinder.Radius()+1.0;
    bool bCapBottom = true;
    bool bCapTop = true;
    ON_Extrusion extrusion;
    if ( 0 == ON_Extrusion::Pipe(cylinder,other_radius,bCapBottom,bCapTop,&extrusion) )
    {

/ input is not valid - nothing set ... } else { / extrusion = pipe ... }

◆ PolyProfile()

const ON_PolyCurve* ON_Extrusion::PolyProfile ( ) const

Returns: If m_profile_count >= 2 and m_profile is an ON_PolyCurve with m_profile_count segments defining outer and inner profiles, a pointer to the polycurve is returned. Otherwise null is returned.

◆ Profile()

const ON_Curve* ON_Extrusion::Profile ( int profile_index ) const

Parameters: profile_index - [in] 0 <= profile_index < ProfileCount(). The outer profile has index 0. Returns: Pointer to the i-th 2d profile. The ON_Extrusion class manages this curve. Do not delete it and do not use the pointer if the ON_Extrusion class changes.

◆ Profile3d() [1/2]

ON_Curve* ON_Extrusion::Profile3d	(	int	profile_index,
		double	s
	)		const

Parameters: profile_index - [in] 0 <= profile_index < ProfileCount(). The outer profile has index 0. s - in A relative parameter controlling which priofile is returned. s = 0.0 returns the bottom profile and s = 1.0 returns the top profile. Returns: nullptr if the input parameters or the ON_Extrusion class is not valid. Otherwise a pointer to a 3d curve for the requested profile. This curve is on the heap and the caller is responsible for deleting this curve.

◆ Profile3d() [2/2]

ON_Curve* ON_Extrusion::Profile3d ( ON_COMPONENT_INDEX ci ) const

Parameters: ci - [in] component index identifying a 3d extrusion profile curve. Returns: nullptr if the component index or the ON_Extrusion class is not valid. Otherwise a pointer to a 3d curve for the requested profile. This curve is on the heap and the caller is responsible for deleting this curve.

◆ ProfileCount()

int ON_Extrusion::ProfileCount ( ) const

Returns: Number of profile curves. See Also: ON_Extrusion::CapCount() ON_Extrusion::ProfileSmoothSegmentCount()

◆ ProfileIndex()

int ON_Extrusion::ProfileIndex ( double profile_parameter ) const

Parameters: profile_parameter - [in] parameter on profile curve Returns: -1: if the profile_parameter does not correspond to a point on the profile curve. >= 0: index of the profile curve with domain containing this parameter. When the profile_parameter corresponds to the end of one profile and the beginning of the next profile, the index of the next profile is returned.

◆ ProfileIsKinked()

bool ON_Extrusion::ProfileIsKinked ( int profile_index ) const

Parameters: profile_index - [in] Returns: True if the profile has at least one kink.

◆ ProfileParameter()

int ON_Extrusion::ProfileParameter ( ) const

Description: Get the surface parameter for the profile. Returns: 0: The first surface parameter corresponds to the profile direction. (m_bTransposed = false) 1: The second surface parameter corresponds to the profile direction. (m_bTransposed = true) Remarks: The default ON_Extrusion constructor sets m_bTransposed = false which corresponds to the 0 = ProfileParameter().

◆ ProfileSmoothSegmentCount()

int ON_Extrusion::ProfileSmoothSegmentCount ( int profile_index ) const

Parameter: profile_index - [in] 0 <= profile_index < ProfileCount(). The outer profile has index 0. Returns: Number of smooth segments in the profile curve. See Also: ON_Extrusion::CapCount() ON_Extrusion::GetProfileKinkParameters() ON_Extrusion::ProfileCount()

◆ Pullback()

ON_Curve* ON_Extrusion::Pullback	(	const ON_Curve &	curve_3d,
		double	tolerance,
		const ON_Interval *	curve_3d_subdomain = `nullptr`,
		ON_3dPoint	start_uv = `ON_3dPoint::UnsetPoint`,
		ON_3dPoint	end_uv = `ON_3dPoint::UnsetPoint`,
		ON_FitResult *	rc = `nullptr`
	)		const

overridevirtual

Description: Pull a 3d curve back to the surface's parameter space. Parameters: curve_3d - [in] a 3d curve tolerance - [in] the maximum acceptable 3d distance between from surface(curve_2d(t)) to the locus of points on the surface that are closest to curve_3d. curve_3d_subdomain - [in] optional subdomain for curve_3d start_uv - [in] optional starting point (if known) end_uv - [in] optional ending point (if known) rc - [out] if not 0 on input, points to an ON_FitResult with the following value - ON_FitResult::in_tolerance if result is in tolerance ON_FitResult::not_in_tolerance if result is not in tolerance ON_FitResult::unknown if no result or it could not be determined if the result was in tolerance. Returns: 2d curve. See Also: ON_Surface::IsoCurve ON_Surface::Pushup

Reimplemented from ON_Surface.

◆ Pushup()

ON_Curve* ON_Extrusion::Pushup	(	const ON_Curve &	curve_2d,
		double	tolerance,
		const ON_Interval *	curve_2d_subdomain = `nullptr`,
		ON_FitResult *	rc = `nullptr`
	)		const

overridevirtual

Description: Compute a 3d curve that is the composite of a 2d curve and the surface map. Parameters: curve_2d - [in] a 2d curve whose image is in the surface's domain. tolerance - [in] the maximum acceptable distance from the returned 3d curve to the image of curve_2d on the surface. curve_2d_subdomain - [in] optional subdomain for curve_2d rc - [out] if not 0 on input, points to an ON_FitResult with the following value - ON_FitResult::in_tolerance if result is in tolerance ON_FitResult::not_in_tolerance if result is not in tolerance ON_FitResult::unknown if no result or it could not be determined if the result was in tolerance. Returns: 3d curve. See Also: ON_Surface::IsoCurve ON_Surface::Pullback

Reimplemented from ON_Surface.

◆ Read()

bool ON_Extrusion::Read ( ON_BinaryArchive & binary_archive )

overridevirtual

Description: Low level archive writing tool used by ON_BinaryArchive::ReadObject(). Parameters: binary_archive - archive to read from Returns: Returns true if the read is successful. Remarks: Use ON_BinaryArchive::ReadObject() to read objects. This Read() function should read the objects definition back into its data members.

The default implementation of this virtual function returns false and does nothing.

Reimplemented from ON_Object.

◆ Reverse()

bool ON_Extrusion::Reverse ( int dir )

overridevirtual

Implements ON_Surface.

◆ SetDomain()

bool ON_Extrusion::SetDomain	(	int	dir,
		double	t0,
		double	t1
	)

overridevirtual

Reimplemented from ON_Surface.

◆ SetMesh()

bool ON_Extrusion::SetMesh	(	ON::mesh_type	mt,
		ON_Mesh *	mesh
	)

ON_Extrusion mesh interface Description: Attach a mesh to the ON_Extrusion. Parameters: mt - [in] type of mesh that is being attached. If mt is ON::render_mesh, ON::analysis_mesh or ON::preview_mesh, the mesh is attached as that type of mesh. If mt is ON::default_mesh or ON::any_mesh, then nothing is done and false is returned. mesh - [in] mesh to attach.
mesh must be on the heap because ~ON_Extrusion() will delete it. if there is already of mesh of the prescribed type, it will be deleted. if mesh is null, any existing mesh is deleted and nothing is attached.

◆ SetMiterPlaneNormal()

bool ON_Extrusion::SetMiterPlaneNormal	(	ON_3dVector	N,
		int	end
	)

Description: Set miter plane normal. Parameters: N - [in] If N = ON_3dVector::UnsetVector or N is parallel to the z-axis, then the miter plane is the default plane perpendicular to the path. If N is valid and the z coordinate of a unitized N is greater than m_Nz_tol, then the miter plane normal is set. end - [in] 0 = set miter plane at the start of the path. 1 = set miter plane at the end of the path.

◆ SetOuterProfile()

bool ON_Extrusion::SetOuterProfile	(	ON_Curve *	outer_profile,
		bool	bCap
	)

Description: Set the outer profile of the extrusion. Parameters: outer_profile - [in] curve in the xy plane or a 2d curve. bCap - [in] If outer_profile is a closed curve, then bCap determines if the extrusion has end caps. If outer_profile is an open curve, bCap is ignored. Returns: True if the profile was set. In this case the ON_Extrusion class manages the curve and ~ON_Extrusion will delete it. If the outer profile is closed, then the extrusion may also have inner profiles. If the outer profile is open, the extrusion may not have inner profiles. If the extrusion already has a profile, the set will fail. Remarks: If needed, outer_profile will be converted to a 2d curve. If outer_curve is closed but not correctly oriented, it will reversed so it has a counter-clockwise orientation.

◆ SetPath()

bool ON_Extrusion::SetPath	(	ON_3dPoint	A,
		ON_3dPoint	B
	)

Description: Sets m_path to (A,B), m_path_domain to [0,Length(AB)], and m_t to [0,1]. Parameters: A - [in] path start B - [in] path end Returns: true A and B are valid, the distance from A to B is larger than ON_ZERO_TOLERANCE, and the path was set. false A or B is not valid or the distance from A to B is at most ON_ZERO_TOLERANCE. In this case nothing is set. Remark: You must also set the up direction to be perpendicular to the path.

◆ SetPathAndUp()

bool ON_Extrusion::SetPathAndUp	(	ON_3dPoint	A,
		ON_3dPoint	B,
		ON_3dVector	up
	)

Description: Sets m_path to (A,B), m_path_domain to [0,Length(AB)], m_t to [0,1], and m_up. Parameters: A - [in] path start B - [in] path end up - [in] up direction If up is a unit vector and perpendicular to the line segment from A to B, then m_up is set to up. Otherwise up will be adjusted so it is perpendicular to the line segment from A to B and unitized. Returns: true A and B are valid, the distance from A to B is larger than ON_ZERO_TOLERANCE, and the path was set. false A or B is not valid, or the distance from A to B is at most ON_ZERO_TOLERANCE, or up is invalid, or up is zero, or up is parallel to the line segment. In this case nothing is set.

◆ SizeOf()

unsigned int ON_Extrusion::SizeOf ( ) const

overridevirtual

Returns: An estimate of the amount of memory the class uses in bytes.

Reimplemented from ON_Object.

◆ SpanCount()

int ON_Extrusion::SpanCount ( int dir ) const

overridevirtual

number of smooth nonempty spans in the parameter direction

Parameters

dir	0 gets first parameter's domain, 1 gets second parameter's domain

Implements ON_Surface.

◆ Split()

bool ON_Extrusion::Split	(	int	dir,
		double	c,
		ON_Surface *&	west_or_south_side,
		ON_Surface *&	east_or_north_side
	)		const

overridevirtual

Description: Splits (divides) the surface into two parts at the specified parameter.

Parameters: dir - [in] 0 The surface is split vertically. The "west" side is returned in "west_or_south_side" and the "east" side is returned in "east_or_north_side". 1 The surface is split horizontally. The "south" side is returned in "west_or_south_side" and the "north" side is returned in "east_or_north_side". c - [in] value of constant parameter in interval returned by Domain(dir) west_or_south_side - [out] west/south portion of surface returned here east_or_north_side - [out] east/north portion of surface returned here

Example:

    ON_NurbsSurface srf = ...;
    int dir = 1;
    ON_NurbsSurface* south_side = 0;
    ON_NurbsSurface* north_side = 0;
    srf.Split( dir, srf.Domain(dir).Mid() south_side, north_side );

Reimplemented from ON_Surface.

◆ SumSurfaceForm()

ON_SumSurface* ON_Extrusion::SumSurfaceForm ( ON_SumSurface * sum_surface ) const

Description: Build a sum surface form of the extrusion. Parameters: sum_surface - [in] If the sum_surface pointer is not null, then the sum surface form is constructed in sum_surface. If the sum_surface pointer is null, then an ON_SumSurface is allocated on the heap. Returns: If successful, a pointer to the sum surface form. If unsuccessful, null. In particular, extrusions with mitered ends do not have sum surface forms.

◆ Transform()

bool ON_Extrusion::Transform ( const ON_Xform & xform )

overridevirtual

Description: Transforms the object.

Parameters: xform - [in] transformation to apply to object. If xform.IsSimilarity() is zero, then you may want to call MakeSquishy() before calling Transform.

Remarks: When overriding this function, be sure to include a call to ON_Object::TransformUserData() which takes care of transforming any ON_UserData that may be attached to the object.

◆ Transpose()

bool ON_Extrusion::Transpose ( )

overridevirtual

transpose surface parameterization (swap "s" and "t")

Implements ON_Surface.

◆ Trim()

bool ON_Extrusion::Trim	(	int	dir,
		const ON_Interval &	domain
	)

overridevirtual

Description: Removes the portions of the surface outside of the specified interval.

Parameters: dir - [in] 0 The domain specifies an sub-interval of Domain(0) (the first surface parameter). 1 The domain specifies an sub-interval of Domain(1) (the second surface parameter). domain - [in] interval of the surface to keep. If dir is 0, then the portions of the surface with parameters (s,t) satisfying s < Domain(0).Min() or s > Domain(0).Max() are trimmed away. If dir is 1, then the portions of the surface with parameters (s,t) satisfying t < Domain(1).Min() or t > Domain(1).Max() are trimmed away.

Reimplemented from ON_Surface.

◆ WallEdge()

ON_Curve* ON_Extrusion::WallEdge ( ON_COMPONENT_INDEX ci ) const

Parameters: ci - [in] component index identifying a wall edge curve. Returns: nullptr if the component index or the ON_Extrusion class is not valid. Otherwise a pointer to a 3d curve for the requested wall edge. This curve is on the heap and the caller is responsible for deleting this curve.

◆ WallSurface()

ON_Surface* ON_Extrusion::WallSurface ( ON_COMPONENT_INDEX ci ) const

Parameters: ci - [in] component index identifying a wall surface. Returns: nullptr if the component index or the ON_Extrusion class is not valid. Otherwise a pointer to a surface for the requested wall surface. This curve is on the heap and the caller is responsible for deleting this curve.

◆ Write()

bool ON_Extrusion::Write ( ON_BinaryArchive & binary_archive ) const

overridevirtual

Description: Low level archive writing tool used by ON_BinaryArchive::WriteObject(). Parameters: binary_archive - archive to write to Returns: Returns true if the write is successful. Remarks: Use ON_BinaryArchive::WriteObject() to write objects. This Write() function should just write the specific definition of this object. It should not write and any chunk typecode or length information.

The default implementation of this virtual function returns false and does nothing.

Reimplemented from ON_Object.

Member Data Documentation

◆ m_bCap

bool ON_Extrusion::m_bCap[2]

capped end information: If the profile is closed, then m_bCap[] determines if the ends are capped.

◆ m_bHaveN

bool ON_Extrusion::m_bHaveN[2]

mitered end information: The normals m_N[] are with respect to the xy plane. A normal parallel to the z axis has no mitering. If m_bHaveN[i] is true, then m_N[i] must be a 3d unit vector with m_N[i].z > m_Nz_tol; If m_bHaveN[i] is false, then m_N[i] is ignored. The normal m_N[0] defines the start miter plane and m_N[1] defines the end miter plane.

◆ m_bTransposed

bool ON_Extrusion::m_bTransposed

false: (s,t) = (profile,path)

◆ m_mesh_cache

ON_MeshCache ON_Extrusion::m_mesh_cache = ON_MeshCache::Empty

mutable

Cached meshes used for rendering, analysis, ...

◆ m_N

ON_3dVector ON_Extrusion::m_N[2]

◆ m_Nz_min

const double ON_Extrusion::m_Nz_min

static

1/64;

The z coordinates of miter plane normals must be greater than m_Nz_tol

◆ m_path

ON_Line ON_Extrusion::m_path

path definition: The line m_path must have length > m_path_length_min. The interval m_t must satisfy 0 <= m_t[0] < m_t[1] <= 1. The extrusion starts at m_path.PointAt(m_t[0]) and ends at m_path.PointAt(m_t[1]). The "up" direction m_up is a unit vector that must be perpendicular to m_path.Tangent().

◆ m_path_domain

ON_Interval ON_Extrusion::m_path_domain

Surface parameterization information.

◆ m_path_length_min

const double ON_Extrusion::m_path_length_min

static

ON_ZERO_TOLERANCE;.

The length of the m_path line must be greater than m_path_length_min

◆ m_profile

ON_Curve* ON_Extrusion::m_profile

◆ m_profile_count

int ON_Extrusion::m_profile_count

profile information: In general, use SetOuterProfile() and AddInnerProfile() to set m_profile_count and m_profile. If you are a glutton for punishment, then you might be interested in the following. The profile curves must be in the x-y plane. The profile's "y" axis corresponds to m_up. The point (0,0) is extruded along the m_path line. If m_profile_count = 1, then m_profile can be any type of continuous curve. If m_profile_count > 1, then m_profile must be an ON_PolyCurve with m_profile_count segments, the domain of each segment must exactly match the polycurve's segment domain, every segment must be continuous and closed, the first segment curve must have counter-clockwise orientation, and the rest must have clockwise orientations.

◆ m_t

ON_Interval ON_Extrusion::m_t

◆ m_up

ON_3dVector ON_Extrusion::m_up

Public Member Functions

Static Public Member Functions

Public Attributes

Static Public Attributes

Additional Inherited Members

Constructor & Destructor Documentation

◆ ON_Extrusion() [1/2]

◆ ON_Extrusion() [2/2]

◆ ~ON_Extrusion()

Member Function Documentation

◆ AddInnerProfile()

◆ BrepForm() [1/2]

◆ BrepForm() [2/2]

◆ CapCount()

◆ CleanupPolyCurveProfile()

◆ CreateFrom3dCurve()

◆ CreateMesh()

◆ Cylinder()

◆ DataCRC()

◆ Degree()

◆ Destroy()

◆ DestroyMesh()

◆ DestroyRuntimeCache()

◆ Dimension()

◆ Domain()

◆ Dump()

◆ Evaluate()

◆ Extend()

◆ FaceCount()

◆ GetBBox()

◆ GetBrepFormComponentIndex() [1/4]

◆ GetBrepFormComponentIndex() [2/4]

◆ GetBrepFormComponentIndex() [3/4]

◆ GetBrepFormComponentIndex() [4/4]

◆ GetClosestPoint()

◆ GetLocalClosestPoint()

◆ GetMiterPlaneNormal()

◆ GetNextDiscontinuity()

◆ GetNurbForm()

◆ GetNurbFormParameterFromSurfaceParameter()

◆ GetParameterTolerance()

◆ GetPathPlane()

◆ GetProfileCurves()

◆ GetProfileKinkParameters() [1/2]

◆ GetProfileKinkParameters() [2/2]

◆ GetProfilePlane()

◆ GetProfileTransformation()

◆ GetSpanVector()

◆ GetSpanVectorIndex()

◆ GetSurfaceParameterFromNurbFormParameter()

◆ GetSurfaceSize()

◆ GetTightBoundingBox()

◆ HasNurbForm()

◆ IsCapped()

◆ IsClosed()

◆ IsContinuous()

◆ IsIsoparametric() [1/2]

◆ IsIsoparametric() [2/2]

◆ IsMitered()

◆ IsoCurve()

◆ IsPeriodic()

◆ IsPlanar()

◆ IsSolid()

◆ IsValid()

◆ IsValidPolyCurveProfile()

◆ Mesh()

◆ ObjectType()

◆ operator=()

◆ PathEnd()

◆ PathLineCurve()

◆ PathParameter()

◆ PathStart()

◆ PathTangent()

◆ Pipe()

◆ PolyProfile()

◆ Profile()

◆ Profile3d() [1/2]

◆ Profile3d() [2/2]

◆ ProfileCount()

◆ ProfileIndex()