surface of revolution More...

#include <opennurbs_sumsurface.h>

Inheritance diagram for ON_SumSurface:

Public Member Functions
	ON_SumSurface ()

	ON_SumSurface (const ON_SumSurface &)

virtual	~ON_SumSurface ()

void	ClearBoundingBox () override

bool	Create (const ON_Curve &curve, const ON_Curve &path_curve)

bool	Create (const ON_Curve &curve, ON_3dVector extrusion_vector)

bool	Create (ON_Curve *pCurve, ON_3dVector extrusion_vector)

bool	Create (ON_Curve pCurve, ON_Curve pPathCurve)

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

ON__UINT32	DataCRC (ON__UINT32 current_remainder) const override
	virtual ON_Object::DataCRC override More...

int	Degree (int) const override

void	Destroy ()

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

int	Dimension () const override

ON_Interval	Domain (int) const override

void	Dump (ON_TextLog &) const override
	for debugging More...

void	EmergencyDestroy ()

bool	Evaluate (double, double, int, int, double , int=0, int =0) const override
	work horse evaluator More...

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

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

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 &, double=0.0) const override

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

bool	GetParameterTolerance (int, double, double , double ) const override

bool	GetSpanVector (int, double *) 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

int	HasNurbForm () const override

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

bool	IsDeformable () const override
	virtual ON_Geometry::IsDeformable() override More...

ON_Curve *	IsoCurve (int, double) const override

bool	IsPeriodic (int) const override

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

bool	IsSingular (int) const override

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

bool	MakeDeformable () override
	virtual ON_Geometry::MakeDeformable() override More...

ON_SumSurface &	operator= (const ON_SumSurface &)

bool	Read (ON_BinaryArchive &) override

bool	Reverse (int) override

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

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

int	SpanCount (int) const override
	number of smooth spans in curve More...

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

bool	Transform (const ON_Xform &) override

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

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

bool	Write (ON_BinaryArchive &) 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

virtual 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

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

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

virtual bool	GetSpanVectorIndex (int dir, double t, int side, int span_vector_index, ON_Interval span_interval) 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 ISO	IsIsoparametric (const ON_BoundingBox &bbox) const

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

virtual 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=0) const

virtual ON_Curve *	Pushup (const ON_Curve &curve_2d, double tolerance, const ON_Interval curve_2d_subdomain=nullptr, ON_FitResult rc=0) const

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

virtual bool	IsMorphable () const

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 ON_SumSurface *	New ()

static ON_SumSurface *	New (const ON_SumSurface &rev_surface)

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
ON_3dVector	m_basepoint = ON_3dPoint::Origin
	Use a ON_ProxyCurve if this is problem. More...

ON_BoundingBox	m_bbox = ON_BoundingBox::EmptyBoundingBox
	lazy evaluation used in ON_SumSurface::BoundingBox() More...

ON_Curve *	m_curve [2] = {}

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 }

Static Public Attributes inherited from ON_Geometry
const static ON_Geometry	Unset

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

Detailed Description

surface of revolution

Constructor & Destructor Documentation

◆ ON_SumSurface() [1/2]

ON_SumSurface::ON_SumSurface ( )

◆ ~ON_SumSurface()

virtual ON_SumSurface::~ON_SumSurface ( )

virtual

◆ ON_SumSurface() [2/2]

ON_SumSurface::ON_SumSurface ( const ON_SumSurface & )

Member Function Documentation

◆ ClearBoundingBox()

void ON_SumSurface::ClearBoundingBox ( )

overridevirtual

Description: Some objects cache bounding box information. If you modify an object, then call ClearBoundingBox() to inform the object that any cached bounding boxes are invalid.

Remarks: Generally, ClearBoundingBox() overrides simply invalidate a cached bounding box and then wait for a call to GetBBox() before recomputing the bounding box.

The default implementation does nothing.

Reimplemented from ON_Geometry.

◆ Create() [1/4]

bool ON_SumSurface::Create	(	const ON_Curve &	curve,
		const ON_Curve &	path_curve
	)

Description: Extrude a curve along a path to create a surface. Parameters: curve - [in] curve is copied. path_curve - [in] path_curve is copied. Returns: true if a valid surface is created.

◆ Create() [2/4]

bool ON_SumSurface::Create	(	const ON_Curve &	curve,
		ON_3dVector	extrusion_vector
	)

Description: Extrude a curve to create a surface. Parameters: curve - [in] curve is copied. extrusion_vector - [in] extrusion vector (must be nonzero) Returns: true if a valid surface is created.

◆ Create() [3/4]

bool ON_SumSurface::Create	(	ON_Curve *	pCurve,
		ON_3dVector	extrusion_vector
	)

Description: Extrude a curve to create a surface. Parameters: pCurve - [in] pointer to a curve. This pointer will be assigned to m_curve[0] and will be deleted by ~ON_SumSurface. extrusion_vector - [in] extrusion vector (must be nonzero) Returns: true if a valid surface is created.

◆ Create() [4/4]

bool ON_SumSurface::Create	(	ON_Curve *	pCurve,
		ON_Curve *	pPathCurve
	)

Description: Extrude a curve to create a surface. Parameters: pCurve - [in] pointer to a curve. This pointer will be assigned to m_curve[0] and will be deleted by ~ON_SumSurface. pPathCurve - [in] pointer to a path curve. This pointer will be assigned to m_curve[1] and will be deleted by ~ON_SumSurface. Returns: true if a valid surface is created.

◆ CreateMesh()

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

overridevirtual

overrides of virtual ON_Surface functions

Reimplemented from ON_Surface.

◆ DataCRC()

ON__UINT32 ON_SumSurface::DataCRC ( ON__UINT32 current_remainder ) const

overridevirtual

virtual ON_Object::DataCRC override

Reimplemented from ON_Object.

◆ Degree()

int ON_SumSurface::Degree ( int ) const

overridevirtual

Implements ON_Surface.

◆ Destroy()

void ON_SumSurface::Destroy ( )

◆ DestroyRuntimeCache()

void ON_SumSurface::DestroyRuntimeCache ( bool bDelete = true )

overridevirtual

virtual ON_Object::DestroyRuntimeCache override

Reimplemented from ON_Object.

◆ Dimension()

int ON_SumSurface::Dimension ( ) const

overridevirtual

overrides of virtual ON_Geometry functions

Reimplemented from ON_Geometry.

◆ Domain()

ON_Interval ON_SumSurface::Domain ( int ) const

overridevirtual

Implements ON_Surface.

◆ Dump()

void ON_SumSurface::Dump ( ON_TextLog & ) const

overridevirtual

for debugging

Reimplemented from ON_Object.

◆ EmergencyDestroy()

void ON_SumSurface::EmergencyDestroy ( )

◆ Evaluate()

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

overridevirtual

Description: 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.

◆ GetBBox()

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

overridevirtual

virtual ON_Geometry GetBBox override

Reimplemented from ON_Geometry.

◆ GetNextDiscontinuity()

bool ON_SumSurface::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_SumSurface::GetNurbForm	(	ON_NurbsSurface &	nurbs_surface,
		double	tolerance = `0.0`
	)		const

overridevirtual

Description: Get a NURBS surface representation of this surface. Parameters: nurbs_surface - [out] NURBS representation returned here tolerance - [in] tolerance to use when creating NURBS representation. s_subdomain - [in] if not nullptr, then the NURBS representation for this portion of the surface is returned. t_subdomain - [in] if not nullptr, then the NURBS representation for this portion of the surface is returned. Returns: 0 unable to create NURBS representation with desired accuracy. 1 success - returned NURBS parameterization matches the surface's to wthe desired accuracy 2 success - returned NURBS point locus matches the surface's to the desired accuracy and the domain of the NURBS surface is correct. On However, This surface's parameterization and the NURBS surface parameterization may not match to the desired accuracy. 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. If you do not need the parameterization information provided by the return code, then ON_Surface::NurbsSurface may be easier to use. See Also: ON_Surface::NurbsSurface

Reimplemented from ON_Surface.

◆ GetNurbFormParameterFromSurfaceParameter()

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

overridevirtual

Reimplemented from ON_Surface.

◆ GetParameterTolerance()

bool ON_SumSurface::GetParameterTolerance	(	int	,
		double	,
		double *	,
		double *
	)		const

overridevirtual

Reimplemented from ON_Surface.

◆ GetSpanVector()

bool ON_SumSurface::GetSpanVector	(	int	,
		double *
	)		const

overridevirtual

Implements ON_Surface.

◆ GetSurfaceParameterFromNurbFormParameter()

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

overridevirtual

Reimplemented from ON_Surface.

◆ GetSurfaceSize()

bool ON_SumSurface::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) Remarks: overrides virtual ON_Surface::GetSurfaceSize Returns: true if successful.

Reimplemented from ON_Surface.

◆ HasNurbForm()

int ON_SumSurface::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.

◆ IsClosed()

bool ON_SumSurface::IsClosed ( int ) const

overridevirtual

Reimplemented from ON_Surface.

◆ IsContinuous()

bool ON_SumSurface::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. Remarks: Overrides virtual ON_Surface::IsContinuous

Reimplemented from ON_Surface.

◆ IsDeformable()

bool ON_SumSurface::IsDeformable ( ) const

overridevirtual

virtual ON_Geometry::IsDeformable() override

Reimplemented from ON_Geometry.

◆ IsoCurve()

ON_Curve* ON_SumSurface::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_SumSurface::IsPeriodic ( int ) const

overridevirtual

Reimplemented from ON_Surface.

◆ IsPlanar()

bool ON_SumSurface::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. Remarks: Overrides virtual ON_Surface::IsPlanar.

Reimplemented from ON_Surface.

◆ IsSingular()

bool ON_SumSurface::IsSingular ( int ) const

overridevirtual

Reimplemented from ON_Surface.

◆ IsValid()

bool ON_SumSurface::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_Geometry.

◆ MakeDeformable()

bool ON_SumSurface::MakeDeformable ( )

overridevirtual

virtual ON_Geometry::MakeDeformable() override

Reimplemented from ON_Geometry.

◆ New() [1/2]

static ON_SumSurface* ON_SumSurface::New ( )

static

Description: Use ON_SumSurface::New(...) instead of new ON_SumSurface(...) Returns: Pointer to an ON_SumSurface. Destroy by calling delete. Remarks: See static ON_Brep* ON_Brep::New() for details.

◆ New() [2/2]

static ON_SumSurface* ON_SumSurface::New ( const ON_SumSurface & rev_surface )

static

◆ operator=()

ON_SumSurface& ON_SumSurface::operator= ( const ON_SumSurface & )

◆ Read()

bool ON_SumSurface::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_SumSurface::Reverse ( int )

overridevirtual

Implements ON_Surface.

◆ SetDomain()

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

overridevirtual

Parameters

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

Reimplemented from ON_Surface.

◆ SizeOf()

unsigned int ON_SumSurface::SizeOf ( ) const

overridevirtual

virtual ON_Object::SizeOf override

overrides of virtual ON_Object functions

Reimplemented from ON_Object.

◆ SpanCount()

int ON_SumSurface::SpanCount ( int ) const

overridevirtual

number of smooth spans in curve

Implements ON_Surface.

◆ Split()

bool ON_SumSurface::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_SumSurface srf = ...;
    int dir = 1;
    ON_SumSurface* south_side = 0;
    ON_SumSurface* north_side = 0;
    srf.Split( dir, srf.Domain(dir).Mid() south_side, north_side );

Reimplemented from ON_Surface.

◆ Transform()

bool ON_SumSurface::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_SumSurface::Transpose ( )

overridevirtual

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

Implements ON_Surface.

◆ Trim()

bool ON_SumSurface::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.

◆ Write()

bool ON_SumSurface::Write ( ON_BinaryArchive & ) const

overridevirtual

Use ON_BinaryArchive::WriteObject() and ON_BinaryArchive::ReadObject() for top level serialization. These Read()/Write() members should just write/read specific definitions. In particular, they should not write/ read any chunk typecode or length information. The default implementations return false and do nothing.

Reimplemented from ON_Object.

Member Data Documentation

◆ m_basepoint

ON_3dVector ON_SumSurface::m_basepoint = ON_3dPoint::Origin

Use a ON_ProxyCurve if this is problem.

◆ m_bbox

ON_BoundingBox ON_SumSurface::m_bbox = ON_BoundingBox::EmptyBoundingBox

lazy evaluation used in ON_SumSurface::BoundingBox()

◆ m_curve

ON_Curve* ON_SumSurface::m_curve[2] = {}

for expert users surface-PointAt(s,t) = m_curve[0]->PointAt(s) + m_curve[1]->PointAt(t) + m_basepoint; m_curve[0] and m_curve[1] are deleted by ~ON_SumSuface.

Public Member Functions

Static Public Member Functions

Public Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ON_SumSurface() [1/2]

◆ ~ON_SumSurface()

◆ ON_SumSurface() [2/2]

Member Function Documentation

◆ ClearBoundingBox()

◆ Create() [1/4]

◆ Create() [2/4]

◆ Create() [3/4]

◆ Create() [4/4]

◆ CreateMesh()

◆ DataCRC()

◆ Degree()

◆ Destroy()

◆ DestroyRuntimeCache()

◆ Dimension()

◆ Domain()

◆ Dump()

◆ EmergencyDestroy()

◆ Evaluate()

◆ Extend()

◆ GetBBox()

◆ GetNextDiscontinuity()

◆ GetNurbForm()

◆ GetNurbFormParameterFromSurfaceParameter()

◆ GetParameterTolerance()

◆ GetSpanVector()

◆ GetSurfaceParameterFromNurbFormParameter()

◆ GetSurfaceSize()

◆ HasNurbForm()

◆ IsClosed()

◆ IsContinuous()

◆ IsDeformable()

◆ IsoCurve()

◆ IsPeriodic()

◆ IsPlanar()

◆ IsSingular()

◆ IsValid()

◆ MakeDeformable()

◆ New() [1/2]

◆ New() [2/2]

◆ operator=()

◆ Read()

◆ Reverse()

◆ SetDomain()

◆ SizeOf()

◆ SpanCount()

◆ Split()

◆ Transform()

◆ Transpose()

◆ Trim()

◆ Write()

Member Data Documentation

◆ m_basepoint

◆ m_bbox

◆ m_curve