Rhino C++ API
8.10
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#include <opennurbs_arccurve.h>
Public Member Functions | |
ON_ArcCurve () ON_NOEXCEPT | |
ON_ArcCurve (const ON_Arc &arc) | |
ON_ArcCurve (const ON_Arc &arc, double t0, double t1) | |
ON_ArcCurve (const ON_ArcCurve &) | |
ON_ArcCurve (const ON_Circle &circle) | |
ON_ArcCurve (const ON_Circle &circle, double t0, double t1) | |
virtual | ~ON_ArcCurve () |
double | AngleDegrees () const |
double | AngleRadians () const |
bool | ChangeClosedCurveSeam (double t) override |
bool | ChangeDimension (int desired_dimension) override |
ON__UINT32 | DataCRC (ON__UINT32 current_remainder) const override |
virtual ON_Object::DataCRC override More... | |
int | Degree () const override |
int | Dimension () const override |
ON_Geometry overrides. More... | |
ON_Interval | Domain () const override |
void | Dump (ON_TextLog &) const override |
bool | Evaluate (double, int, int, double *, int=0, int *=0) const override |
bool | Extend (const ON_Interval &domain) override |
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 | 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 |
virtual ON_Curve::GetNurbForm override More... | |
bool | GetNurbFormParameterFromCurveParameter (double, double *) const override |
virtual ON_Curve::GetNurbFormParameterFromCurveParameter override More... | |
bool | GetSpanVector (double *) 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 |
virtual ON_Curve::HasNurbForm override More... | |
int | IntersectSelf (ON_SimpleArray< ON_X_EVENT > &x, double intersection_tolerance=0.0, const ON_Interval *curve_domain=0) const override |
virtual ON_Curve override More... | |
bool | IsArc (const ON_Plane *=nullptr, ON_Arc *=nullptr, double=0.0) const override |
bool | IsCircle () const |
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=0.0) const override |
bool | IsLinear (double=ON_ZERO_TOLERANCE) const override |
bool | IsPeriodic (void) const override |
periodic.) More... | |
bool | IsPlanar (ON_Plane *=nullptr, double=0.0) const override |
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_ArcCurve & | operator= (const ON_Arc &arc) |
ON_ArcCurve & | operator= (const ON_ArcCurve &) |
ON_ArcCurve & | operator= (const ON_Circle &circle) |
double | Radius () const |
bool | Read (ON_BinaryArchive &) override |
bool | Reverse () override |
bool | SetDomain (double t0, double t1) override |
ON_Curve overrides. More... | |
bool | SetEndPoint (ON_3dPoint end_point) override |
bool | SetStartPoint (ON_3dPoint start_point) override |
Domain changes from [a,b] to [-b,-a]. More... | |
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 |
bool | Transform (const ON_Xform &) override |
bool | Trim (const ON_Interval &) override |
bool | Write (ON_BinaryArchive &) const override |
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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 |
bool | ChangeClosedCurveSeam (double t, double min_dist) |
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 () |
void | DestroyRuntimeCache (bool bDelete=true) override |
virtual ON_Object::DestroyRuntimeCache override More... | |
virtual ON_Curve * | DuplicateCurve () const |
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 |
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 | 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 |
virtual bool | GetParameterTolerance (double t, double *tminus, double *tplus) const |
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 |
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 |
virtual int | IsPolyline (ON_SimpleArray< ON_3dPoint > *pline_points=nullptr, ON_SimpleArray< double > *pline_t=nullptr) 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) |
double | SignedCurvatureAt (double t, const ON_3dVector *plane_normal=nullptr) const |
unsigned int | SizeOf () const override |
virtual ON_Object::SizeOf override More... | |
ON_3dVector | TangentAt (double t) const |
bool | Transform (const ON_Xform &xform) override |
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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) |
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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 | |
ON_Arc | m_arc = ON_Arc::UnitCircle |
default = radius 1 circle in x-y plane More... | |
int | m_dim = 3 |
ON_Interval | m_t = ON_Interval::ZeroToTwoPi |
Copyright (c) 1993-2022 Robert McNeel & Associates. All rights reserved. OpenNURBS, Rhinoceros, and Rhino3D are registered trademarks of Robert McNeel & Associates.
THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT EXPRESS OR IMPLIED WARRANTY. ALL IMPLIED WARRANTIES OF FITNESS FOR ANY PARTICULAR PURPOSE AND OF MERCHANTABILITY ARE HEREBY DISCLAIMED.
For complete openNURBS copyright information see http://www.opennurbs.org. Description: ON_ArcCurve is used to represent arcs and circles. ON_ArcCurve.IsCircle() returns true if the curve is a complete circle. Remarks:
ON_ArcCurve::ON_ArcCurve | ( | ) |
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ON_ArcCurve::ON_ArcCurve | ( | const ON_ArcCurve & | ) |
ON_ArcCurve::ON_ArcCurve | ( | const ON_Arc & | arc | ) |
Description: Create an arc curve with domain (0,arc.Length()).
ON_ArcCurve::ON_ArcCurve | ( | const ON_Arc & | arc, |
double | t0, | ||
double | t1 | ||
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Description: Create an arc curve with domain (t0,t1)
ON_ArcCurve::ON_ArcCurve | ( | const ON_Circle & | circle | ) |
Description: Creates a curve that is a complete circle with domain (0,circle.Length()).
ON_ArcCurve::ON_ArcCurve | ( | const ON_Circle & | circle, |
double | t0, | ||
double | t1 | ||
) |
Description: Creates a curve that is a complete circle with domain (t0,t1).
double ON_ArcCurve::AngleDegrees | ( | ) | const |
Returns: The arc's subtended angle in degrees.
double ON_ArcCurve::AngleRadians | ( | ) | const |
Returns: The arc's subtended angle in radians.
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Description: If this curve is closed, then modify it so that the start/end point is at curve parameter t. Parameters: t - [in] curve parameter of new start/end point. The returned curves domain will start at t. Returns: true if successful.
Reimplemented from ON_Curve.
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Description: Change the dimension of a curve. Parameters: desired_dimension - [in] Returns: true if the curve's dimension was already desired_dimension or if the curve's dimension was successfully changed to desired_dimension.
Reimplemented from ON_Curve.
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virtual ON_Object::DataCRC override
Reimplemented from ON_Object.
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Description: Returns maximum algebraic degree of any span or a good estimate if curve spans are not algebraic. Returns: degree
Implements ON_Curve.
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ON_Geometry overrides.
Reimplemented from ON_Geometry.
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Returns: domain of the curve.
Implements ON_Curve.
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Description: This evaluator actually does all the work. The other ON_Curve evaluation tools call this virtual function. Parameters: t - [in] evaluation parameter ( usually in Domain() ). der_count - [in] (>=0) number of derivatives to evaluate v_stride - [in] (>=Dimension()) stride to use for the v[] array v - [out] array of length (der_count+1)*v_stride curve(t) is returned in (v[0],...,v[m_dim-1]), curve'(t) is returned in (v[v_stride],...,v[v_stride+m_dim-1]), curve"(t) is returned in (v[2*v_stride],...,v[2*v_stride+m_dim-1]), etc. side - [in] optional - determines which side to evaluate from =0 default <0 to evaluate from below, >0 to evaluate from above hint - [in/out] optional evaluation hint used to speed repeated evaluations Returns: false if unable to evaluate. See Also: ON_Curve::EvPoint ON_Curve::Ev1Der ON_Curve::Ev2Der
Implements ON_Curve.
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Description: Where possible, analytically extends curve to include domain. Parameters: domain - [in] if domain is not included in curve domain, curve will be extended so that its domain includes domain.
Will not work if curve is closed. Original curve is identical to the restriction of the resulting curve to the original curve domain, Returns: true if successful.
Reimplemented from ON_Curve.
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virtual ON_Geometry GetBBox override
Reimplemented from ON_Geometry.
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Find parameter of the point on a curve that is closest to test_point. If the maximum_distance parameter is > 0, then only points whose distance to the given point is <= maximum_distance will be returned. Using a positive value of maximum_distance can substantially speed up the search. If the sub_domain parameter is not nullptr, then the search is restricted to the specified portion of the curve.
true if returned if the search is successful. false is returned if the search fails.
Reimplemented from ON_Curve.
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virtual ON_Curve::GetCurveParameterFromNurbFormParameter override
Reimplemented from ON_Curve.
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Length of curve. true if returned if the length calculation is successful. false is returned if the length is not calculated.
The arc length will be computed so that (returned length - real length)/(real length) <= fractional_tolerance More simply, if you want N significant figures in the answer, set the fractional_tolerance to 1.0e-N. For "nice" curves, 1.0e-8 works fine. For very high degree nurbs and nurbs with bad parameterizations, use larger values of fractional_tolerance.
Reimplemented from ON_Curve.
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Find parameter of the point on a curve that is locally closest to the test_point. The search for a local close point starts at seed_parameter. If the sub_domain parameter is not nullptr, then the search is restricted to the specified portion of the curve.
true if returned if the search is successful. false is returned if the search fails.
Reimplemented from ON_Curve.
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Description: virtual ON_Curve::GetNormalizedArcLengthPoint override. Get the parameter of the point on the curve that is a prescribed arc length from the start of the curve. Parameters: s - [in] normalized arc length parameter. E.g., 0 = start of curve, 1/2 = midpoint of curve, 1 = end of curve. t - [out] parameter such that the length of the curve from its start to t is arc_length. fractional_tolerance - [in] desired fractional precision. fabs(("exact" length from start to t) - arc_length)/arc_length <= fractional_tolerance sub_domain - [in] If not nullptr, the calculation is performed on the specified sub-domain of the curve. Returns: true if successful
Reimplemented from ON_Curve.
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Description: virtual ON_Curve::GetNormalizedArcLengthPoints override. Get the parameter of the point on the curve that is a prescribed arc length from the start of the curve. Parameters: count - [in] number of parameters in s. s - [in] array of normalized arc length parameters. E.g., 0 = start of curve, 1/2 = midpoint of curve, 1 = end of curve. t - [out] array of curve parameters such that the length of the curve from its start to t[i] is s[i]*curve_length. absolute_tolerance - [in] if absolute_tolerance > 0, then the difference between (s[i+1]-s[i])*curve_length and the length of the curve segment from t[i] to t[i+1] will be <= absolute_tolerance. fractional_tolerance - [in] desired fractional precision for each segment. fabs("true" length - actual length)/(actual length) <= fractional_tolerance sub_domain - [in] If not nullptr, the calculation is performed on the specified sub-domain of the curve. A 0.0 s value corresponds to sub_domain->Min() and a 1.0 s value corresponds to sub_domain->Max(). Returns: true if successful
Reimplemented from ON_Curve.
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virtual ON_Curve::GetNurbForm override
Reimplemented from ON_Curve.
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virtual ON_Curve::GetNurbFormParameterFromCurveParameter override
Reimplemented from ON_Curve.
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Description: Get number of parameters of "knots". Parameters: span_parameters - [out] an array of length SpanCount()+1 is filled in with the parameters where the curve is not smooth (C-infinity). Returns: true if successful
Implements ON_Curve.
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virtual ON_Geometry GetTightBoundingBox override
Reimplemented from ON_Geometry.
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virtual ON_Curve::HasNurbForm override
Reimplemented from ON_Curve.
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Description: Test a curve to see if the locus if its points is an arc or circle. Parameters: plane - [in] if not nullptr, test is performed in this plane arc - [out] if not nullptr and true is returned, then arc parameters are filled in tolerance - [in] tolerance to use when checking Returns: ON_Arc.m_angle > 0 if curve locus is an arc between specified points. If ON_Arc.m_angle is 2.0*ON_PI, then the curve is a circle.
Reimplemented from ON_Curve.
bool ON_ArcCurve::IsCircle | ( | ) | const |
Description: Returns true if this arc curve is a complete circle.
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CV = euclidean location of end CV, or curve is
Reimplemented from ON_Curve.
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Description: Test continuity at a curve parameter value. Parameters: c - [in] type of continuity to test for. Read ON::continuity comments for details. t - [in] parameter to test hint - [in] evaluation hint point_tolerance - [in] if the distance between two points is greater than point_tolerance, then the curve is not C0. d1_tolerance - [in] if the difference between two first derivatives is greater than d1_tolerance, then the curve is not C1. d2_tolerance - [in] if the difference between two second derivatives is greater than d2_tolerance, then the curve 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 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 or ON::continuity::Gsmooth_continuous.
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. ON::continuity::Gsmooth_continuous: If K0 and K1 are curvatures evaluated from above and below and the angle between K0 and K1 is at least twice angle tolerance or ||K0| - |K1|| > (max(|K0|,|K1|) > curvature_tolerance, then a curvature discontinuity is reported. Returns: true if the curve has at least the c type continuity at the parameter t.
Reimplemented from ON_Curve.
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Description: Test a curve to see if it lies in a specific plane. Parameters: test_plane - [in] tolerance - [in] tolerance to use when checking Returns: true if the maximum distance from the curve to the test_plane is <= tolerance.
Implements ON_Curve.
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Description: Test a curve to see if the locus if its points is a line segment. Parameters: tolerance - [in] ///< tolerance to use when checking linearity Returns: true if the ends of the curve are farther than tolerance apart and the maximum distance from any point on the curve to the line segment connecting the curve's ends is <= tolerance.
Reimplemented from ON_Curve.
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periodic.)
Reimplemented from ON_Curve.
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Description: Test a curve 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 checkin Note: If the curve is a simple planar closed curve the plane orientation agrees with the curve orientation. Returns: true if there is a plane such that the maximum distance from the curve to the plane is <= tolerance.
Reimplemented from ON_Curve.
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Description: Used to quickly find short curves. Parameters: tolerance - [in] (>=0) sub_domain - [in] If not nullptr, the test is performed on the interval that is the intersection of sub_domain with Domain(). Returns: True if the length of the curve is <= tolerance. Remarks: Faster than calling Length() and testing the result.
Reimplemented from ON_Curve.
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ON_ArcCurve& ON_ArcCurve::operator= | ( | const ON_Arc & | arc | ) |
Description: Create an arc curve with domain (0,arc.Length()).
ON_ArcCurve& ON_ArcCurve::operator= | ( | const ON_ArcCurve & | ) |
ON_ArcCurve& ON_ArcCurve::operator= | ( | const ON_Circle & | circle | ) |
Description: Creates a curve that is a complete circle with domain (0,circle.Length()).
double ON_ArcCurve::Radius | ( | ) | const |
Returns: The arc's radius.
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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.
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reverse parameterizatrion
Implements ON_Curve.
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ON_Curve overrides.
Description: virtual ON_Curve::SetDomain override. Set the domain of the curve Parameters: t0 - [in] t1 - [in] new domain will be [t0,t1] Returns: true if successful.
Reimplemented from ON_Curve.
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Description: Force the curve to end at a specified point. Parameters: end_point - [in] Returns: true if successful. Remarks: Some end points cannot be moved. Be sure to check return code. See Also: ON_Curve::SetStartPoint ON_Curve::PointAtStart ON_Curve::PointAtEnd
Reimplemented from ON_Curve.
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Domain changes from [a,b] to [-b,-a].
Description: Force the curve to start at a specified point. Parameters: start_point - [in] Returns: true if successful. Remarks: Some end points cannot be moved. Be sure to check return code. See Also: ON_Curve::SetEndPoint ON_Curve::PointAtStart ON_Curve::PointAtEnd
Reimplemented from ON_Curve.
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virtual ON_Object::SizeOf override
Reimplemented from ON_Object.
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number of smooth spans in curve
Implements ON_Curve.
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Description: Splits (divides) the arc at the specified parameter.
The parameter must be in the interior of the arc's domain. The ON_Curve pointers passed to ON_ArcCurve::Split must either be nullptr or point to ON_ArcCurve objects. If a pointer is nullptr, then an ON_ArcCurve will be created in Split(). You may pass "this" as left_side or right_side. Parameters: t - [in] parameter to split the curve at in the interval returned by Domain(). left_side - [out] left portion of curve returned here. If not nullptr, left_side must point to an ON_ArcCuve. right_side - [out] right portion of curve returned here If not nullptr, right_side must point to an ON_ArcCuve. Remarks: Overrides virtual ON_Curve::Split.
Reimplemented from ON_Curve.
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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.
See Also: ON_Geometry::IsDeformable();
Remarks: Classes derived from ON_Geometry should call ON_Geometry::Transform() to handle user data transformations and then transform their definition.
Reimplemented from ON_Geometry.
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Description: Removes portions of the curve outside the specified interval. Parameters: domain - [in] interval of the curve to keep. Portions of the curve before curve(domain[0]) and after curve(domain[1]) are removed. Returns: true if successful.
Reimplemented from ON_Curve.
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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.
ON_Arc ON_ArcCurve::m_arc = ON_Arc::UnitCircle |
default = radius 1 circle in x-y plane
int ON_ArcCurve::m_dim = 3 |
The dimension of a arc curve can be 2 or 3. (2 so ON_ArcCurve can be used as a trimming curve)
ON_Interval ON_ArcCurve::m_t = ON_Interval::ZeroToTwoPi |