#include <opennurbs_plus_hiddenline.h>

Inheritance diagram for ON_HLDCurve:

Public Types
enum	VISIBILITY : unsigned int { VISIBILITY::kUnset = 0, VISIBILITY::kVisible = 1, VISIBILITY::kHidden = 2, VISIBILITY::kDuplicate = 3, VISIBILITY::kProjecting = 4, VISIBILITY::kClipped = 5 }

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 }

Public Member Functions
void	Dump (ON_TextLog &) const
	for debugging More...

ON_HLDFullCurve *	FullCurve ()

const ON_HLDFullCurve *	FullCurve () const
	This curve is a subcurve of *FullCurve(). More...

bool	IsOnSectionCut () const
	True if this curve on the boundary of the visible region, as defined by the clipping planes. More...

bool	IsSceneSilhouette () const
	Is this Curve a scene silhouette. More...

Public Member Functions inherited from ON_CurveProxy
	ON_CurveProxy () ON_NOEXCEPT

	ON_CurveProxy (const ON_Curve *)

	ON_CurveProxy (const ON_Curve *, ON_Interval)

	ON_CurveProxy (const ON_CurveProxy &)

virtual	~ON_CurveProxy ()

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

int	Degree () const override

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

int	Dimension () const override
	ON_Geometry overrides. More...

ON_Interval	Domain () const override
	ON_Curve overrides. More...

ON_Curve *	DuplicateCurve () const override

bool	Evaluate (double, int, int, double , int=0, int =0) const override
	Domain changes from [a,b] to [-b,-a]. More...

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

bool	GetClosestPoint (const ON_3dPoint &, double , double=0.0, const ON_Interval =nullptr) const override

bool	GetCurveParameterFromNurbFormParameter (double, double *) const override
	virtual ON_Curve::GetCurveParameterFromNurbFormParameter override More...

bool	GetLength (double , double=1.0e-8, const ON_Interval =nullptr) const override

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

bool	GetNextDiscontinuity (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

bool	GetNormalizedArcLengthPoint (double s, double t, double fractional_tolerance=1.0e-8, const ON_Interval sub_domain=nullptr) const override

bool	GetNormalizedArcLengthPoints (int count, const double s, double t, double absolute_tolerance=0.0, double fractional_tolerance=1.0e-8, const ON_Interval *sub_domain=nullptr) const override

int	GetNurbForm (ON_NurbsCurve &, double=0.0, const ON_Interval *=nullptr) const override

bool	GetNurbFormParameterFromCurveParameter (double, double *) const override
	virtual ON_Curve::GetNurbFormParameterFromCurveParameter override More...

bool	GetParameterTolerance (double, double , double ) const override
	(optional - override if curve is piecewise smooth) More...

bool	GetSpanVector (double *) const override

int	HasNurbForm () const override

bool	IsArc (const ON_Plane =nullptr, ON_Arc =nullptr, double=ON_ZERO_TOLERANCE) const override

bool	IsClosed (void) const override

bool	IsContinuous (ON::continuity c, 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	IsInPlane (const ON_Plane &, double=ON_ZERO_TOLERANCE) const override

bool	IsLinear (double=ON_ZERO_TOLERANCE) const override

bool	IsPeriodic (void) const override
	periodic.) More...

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

int	IsPolyline (ON_SimpleArray< ON_3dPoint > pline_points=nullptr, ON_SimpleArray< double > pline_t=nullptr) const override
	virtual override of ON_Curve::IsPolyline More...

bool	IsShort (double tolerance, const ON_Interval sub_domain=0, double length_estimate=0) const override

bool	IsValid (class ON_TextLog *text_log=nullptr) const override
	ON_Object overrides. More...

ON_CurveProxy &	operator= (const ON_CurveProxy &)

const ON_Curve *	ProxyCurve () const

ON_Interval	ProxyCurveDomain () const

bool	ProxyCurveIsReversed () const

bool	Read (ON_BinaryArchive &) override

double	RealCurveParameter (double t) const

bool	Reverse () override

bool	SetDomain (double t0, double t1) override

bool	SetDomain (ON_Interval domain)

void	SetProxyCurve (const ON_Curve *real_curve)

void	SetProxyCurve (const ON_Curve *real_curve, ON_Interval real_curve_subdomain)

bool	SetProxyCurveDomain (ON_Interval proxy_curve_subdomain)

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

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

bool	Split (double t, ON_Curve &left_side, ON_Curve &right_side) const override
	override of virtual ON_Curve::Split More...

double	ThisCurveParameter (double real_curve_parameter) const

bool	Transform (const ON_Xform &) override

bool	Trim (const ON_Interval &domain) override
	override of virtual ON_Curve::Trim More...

bool	Write (ON_BinaryArchive &) const override

Public Member Functions inherited from ON_Curve
	ON_Curve () ON_NOEXCEPT

	ON_Curve (const ON_Curve &)

virtual	~ON_Curve ()

bool	AreaMassProperties (ON_3dPoint base_point, ON_3dVector plane_normal, 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

virtual bool	ChangeClosedCurveSeam (double t)

bool	ChangeClosedCurveSeam (double t, double min_dist)

virtual bool	ChangeDimension (int desired_dimension)

virtual class ON_CurveTree *	CreateCurveTree () const

ON_3dVector	CurvatureAt (double t) const

const class ON_CurveTree *	CurveTree () const

ON_3dVector	DerivativeAt (double t) const

void	DestroyCurveTree ()

bool	Ev1Der (double t, ON_3dPoint &point, ON_3dVector &first_derivative, int side=0, int *hint=0) const

bool	Ev2Der (double t, ON_3dPoint &point, ON_3dVector &first_derivative, ON_3dVector &second_derivative, int side=0, int *hint=0) const

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

bool	EvCurvature (double t, ON_3dPoint &point, ON_3dVector &tangent, ON_3dVector &kappa, int side=0, int *hint=0) const

bool	EvPoint (double t, ON_3dPoint &point, int side=0, int *hint=0) const

bool	EvSignedCurvature (double t, ON_3dPoint &point, ON_3dVector &tangent, double &kappa, const ON_3dVector normal=nullptr, int side=0, int hint=0) const

bool	EvTangent (double t, ON_3dPoint &point, ON_3dVector &tangent, int side=0, int *hint=0) const

virtual bool	Extend (const ON_Interval &domain)

bool	FirstSpanIsLinear (double min_length, double tolerance) const

bool	FirstSpanIsLinear (double min_length, double tolerance, ON_Line *span_line) const

bool	FrameAt (double t, ON_Plane &plane) const

bool	GetDomain (double t0, double t1) const
	curve interface More...

virtual bool	GetSpanVectorIndex (double t, int side, int span_vector_index, ON_Interval span_domain) const

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	IntersectCurve (const ON_Curve curveB, ON_SimpleArray< ON_X_EVENT > &x, double intersection_tolerance=0.0, double overlap_tolerance=0.0, const ON_Interval curveA_domain=0, const ON_Interval *curveB_domain=0) const

int	IntersectPlane (ON_PlaneEquation plane_equation, ON_SimpleArray< ON_X_EVENT > &x, double intersection_tolerance=0.0, double overlap_tolerance=0.0, const ON_Interval *curve_domain=0) const

virtual int	IntersectSelf (ON_SimpleArray< ON_X_EVENT > &x, double intersection_tolerance=0.0, const ON_Interval *curve_domain=0) const

int	IntersectSurface (const ON_Surface surfaceB, ON_SimpleArray< ON_X_EVENT > &x, double intersection_tolerance=0.0, double overlap_tolerance=0.0, const ON_Interval curveA_domain=0, const ON_Interval surfaceB_udomain=0, const ON_Interval surfaceB_vdomain=0) const

bool	IsArcAt (double t, const ON_Plane plane=0, ON_Arc arc=0, double tolerance=ON_ZERO_TOLERANCE, double t0=0, double t1=0) const

bool	IsClosable (double tolerance, double min_abs_size=0.0, double min_rel_size=10.0) const

virtual bool	IsEllipse (const ON_Plane plane=nullptr, ON_Ellipse ellipse=nullptr, double tolerance=ON_ZERO_TOLERANCE) const

bool	IsLong (double min_length, const ON_Interval *sub_domain=0) const

bool	LastSpanIsLinear (double min_length, double tolerance) const

bool	LastSpanIsLinear (double min_length, double tolerance, ON_Line *span_line) const

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

class ON_PolylineCurve *	MeshCurve (ON_MeshCurveParameters &mp, ON_PolylineCurve polyline, bool bSkipFirstPoint, const ON_Interval domain) const

double	NextCurveKink (ON_Interval search_domain, const class ON_CurveKinkDefinition &kink_definition) const
	Find the next curve kink in the search domain. More...

ON_NurbsCurve *	NurbsCurve (ON_NurbsCurve pNurbsCurve=nullptr, double tolerance=0.0, const ON_Interval subdomain=nullptr) const

class ON_NurbsCurve *	NurbsCurveFit (ON_Interval domain, const class ON_NurbsCurveFitParameters &fit_parameters, class ON_NurbsCurve *destination_nurbs_cuve, class ON_Line &maximum_separation, double &this_separation_parameter, double &nurbs_separation_parameter) const
	Get a uniform NURBS curve fit to this curve.. This function is useful when you want to fit this curve a single time. If you are in a situation where you are repeatedly adjusting fit_parameters, it is much more efficient to use the ON_NurbsCurveFitBuilder class because the steps involved in sampling points and other information from this input curve are expensive and can be reused as fit_parameters.Degree(), fit_parameters.PointCount(), and other fitting parmeters are changed. More...

ON::object_type	ObjectType () const override

ON_Curve &	operator= (const ON_Curve &)

ON_3dPoint	PointAt (double t) const

ON_3dPoint	PointAtEnd () const

ON_3dPoint	PointAtStart () const

virtual bool	RemoveShortSegments (double tolerance, bool bRemoveShortSegments=true)

bool	SetDomain (ON_Interval domain)

virtual bool	SetEndPoint (ON_3dPoint end_point)

virtual bool	SetStartPoint (ON_3dPoint start_point)

double	SignedCurvatureAt (double t, const ON_3dVector *plane_normal=nullptr) const

const ON_SimpleArray< double >	SpanVector () const
	The curve's span vector is a stricltly monotone increasing list of doubles that are the intervals on which the curve is C-infinity. More...

ON_3dVector	TangentAt (double t) const

ON_3dVector	TangentAt (double t, int side) const
	Evaluate the unit tangent vector with the option to specify the direction of the limit. This is useful when evaluating tangent vectors at a tangent discontinuity. More...

Public Member Functions inherited from ON_Geometry
	ON_Geometry ()=default

	ON_Geometry (const ON_Geometry &)=default

	~ON_Geometry ()=default

ON_BoundingBox	BoundingBox () const

virtual class ON_Brep *	BrepForm (class ON_Brep *brep=nullptr) 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	HasBrepForm () 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	DumpUserData (const wchar_t *description, ON_TextLog &text_log) const
	Go through the linked list of ON_UserData attached to this and call the virtual Dump(text_log) function on each instance. More...

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_wString	ObjectTypeStr () const
	virtual More...

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

Public Attributes
int	m_ci = -1
	Index of this curve in ON_HiddenLineDrawing::m_curve. More...

ON_SIL_EVENT::SIDE_FILL	m_SilSide [2]

VISIBILITY	m_vis = VISIBILITY::kUnset

Friends
class	ON_HiddenLineDrawingImplBase

class	ON_HLDFullCurve

class	TL_HiddenLineDrawingImpl

class	TL_HLDBrepObj

Additional Inherited Members
Static Public Member Functions inherited from ON_Curve
static class ON_NurbsCurve *	CreateCubicLoft (int point_count, int point_dim, int point_stride, const double point_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_NurbsCurve nurbs_curve=0)

static bool	GetCurveSeparation (const ON_Curve &curveA, ON_Interval domainA, const ON_Curve &curveB, ON_Interval domainB, ON_Line &minimum_separation, double min_parameter_A, double min_parameter_B, ON_Line &maximum_separation, double max_parameter_A, double max_parameter_B)
	Find the locations of the minimimum and maximum separation between two curves. When the separation points are distinct, the line connecting the separation points is perpindicular to the curves. This calculates the distances and locations shown in the Rhino CrvDeviation command. More...

Static Public Attributes inherited from ON_Geometry
const static ON_Geometry	Unset

Protected Member Functions inherited from ON_CurveProxy
void	SetProxyCurveIsReversed (bool bReversed)

Protected Member Functions inherited from ON_Curve
bool	ParameterSearch (double t, int &index, bool bEnableSnap, const ON_SimpleArray< double > &m_t, double RelTol=ON_SQRT_EPSILON) const

Detailed Description

The results of HiddenLineDrawing calculation are a collection of TL_HLDCurves. An ON_HLDCurve is a subcurve of an ON_HLDFullCurve, represented as an ON_CurveProxy of the containing ON_HLDFullCurve.

Member Enumeration Documentation

◆ VISIBILITY

enum ON_HLDCurve::VISIBILITY : unsigned int

strong

Enumerator
kUnset
kVisible
kHidden
kDuplicate
kProjecting	projects to a point ( smaller than tol )
kClipped	clipped by clipping planes Deprecated : kClipped is not actually generated by HiddenLineDrawings and should not be used

Member Function Documentation

◆ Dump()

void ON_HLDCurve::Dump ( ON_TextLog & ) const

virtual

for debugging

Reimplemented from ON_CurveProxy.

◆ FullCurve() [1/2]

ON_HLDFullCurve* ON_HLDCurve::FullCurve ( )

◆ FullCurve() [2/2]

const ON_HLDFullCurve* ON_HLDCurve::FullCurve ( ) const

This curve is a subcurve of *FullCurve().

◆ IsOnSectionCut()

bool ON_HLDCurve::IsOnSectionCut ( ) const

True if this curve on the boundary of the visible region, as defined by the clipping planes.

◆ IsSceneSilhouette()

bool ON_HLDCurve::IsSceneSilhouette ( ) const

Is this Curve a scene silhouette.

Friends And Related Function Documentation

◆ ON_HiddenLineDrawingImplBase

friend class ON_HiddenLineDrawingImplBase

friend

◆ ON_HLDFullCurve

friend class ON_HLDFullCurve

friend

◆ TL_HiddenLineDrawingImpl

friend class TL_HiddenLineDrawingImpl

friend

◆ TL_HLDBrepObj

friend class TL_HLDBrepObj

friend

Member Data Documentation

◆ m_ci

int ON_HLDCurve::m_ci = -1

Index of this curve in ON_HiddenLineDrawing::m_curve.

◆ m_SilSide

ON_SIL_EVENT::SIDE_FILL ON_HLDCurve::m_SilSide[2]

The m_SilSide fields are only valid for visible curves. With respect to the make2d image the region to the left ( or right respectively) of this curve is described by m_SilSide[0] ( or m_SideSil[1] respectively). If exactly one of these regions is empty this is a scene silhouette. If this region contains a surface it is either a surface which in 3d is adjacent to this edge or it an surface that is further away from the camera, we call this a shadow surface.
unknown is used for unset values and for projecting curves

◆ m_vis

VISIBILITY ON_HLDCurve::m_vis = VISIBILITY::kUnset

Public Types

Public Member Functions

Public Attributes

Friends

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ VISIBILITY

Member Function Documentation

◆ Dump()

◆ FullCurve() [1/2]

◆ FullCurve() [2/2]

◆ IsOnSectionCut()

◆ IsSceneSilhouette()

Friends And Related Function Documentation

◆ ON_HiddenLineDrawingImplBase

◆ ON_HLDFullCurve

◆ TL_HiddenLineDrawingImpl

◆ TL_HLDBrepObj

Member Data Documentation

◆ m_ci

◆ m_SilSide

◆ m_vis