#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	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

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

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

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	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

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 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