Rhino C++ API
8.10
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#include <opennurbs_linecurve.h>
Public Member Functions | |
ON_LineCurve () ON_NOEXCEPT | |
ON_LineCurve (const ON_2dPoint &, const ON_2dPoint &) | |
creates a 2d line curve More... | |
ON_LineCurve (const ON_3dPoint &, const ON_3dPoint &) | |
creates a 3d line curve More... | |
ON_LineCurve (const ON_Line &) | |
ON_LineCurve (const ON_Line &, double, double) | |
ON_LineCurve (const ON_LineCurve &) | |
virtual | ~ON_LineCurve () |
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 |
ON_Curve overrides. More... | |
void | Dump (ON_TextLog &) const override |
for debugging More... | |
bool | Evaluate (double, int, int, double *, int=0, int *=0) const override |
Domain changes from [a,b] to [-b,-a]. More... | |
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 nurbs_t, double *curve_t) const override |
bool | GetLength (double *length, double fractional_tolerance=1.0e-8, const ON_Interval *sub_domain=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 |
bool | GetNurbFormParameterFromCurveParameter (double curve_t, double *nurbs_t) const override |
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 |
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=ON_ZERO_TOLERANCE) const override |
bool | IsClosed (void) const override |
bool | IsDeformable () const override |
virtual ON_Geometry::IsDeformable() override More... | |
bool | IsInPlane (const ON_Plane &, double=ON_ZERO_TOLERANCE) const override |
bool | IsLinear (double=ON_ZERO_TOLERANCE) const override |
bool | IsMorphable () const override |
virtual ON_Geometry override More... | |
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 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 |
bool | MakeDeformable () override |
virtual ON_Geometry::MakeDeformable() override More... | |
bool | Morph (const ON_SpaceMorph &morph) override |
virtual ON_Geometry override More... | |
ON_LineCurve & | operator= (const ON_Line &) |
ON_LineCurve & | operator= (const ON_LineCurve &) |
bool | Read (ON_BinaryArchive &) override |
bool | Reverse () override |
bool | SetDomain (double t0, double t1) override |
bool | SetEndPoint (ON_3dPoint end_point) override |
bool | SetStartPoint (ON_3dPoint start_point) override |
unsigned int | SizeOf () const override |
ON_Object overrides. 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 | SwapCoordinates (int, int) override |
bool | Transform (const ON_Xform &) override |
bool | Trim (const ON_Interval &domain) 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 |
virtual bool | ChangeClosedCurveSeam (double t) |
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 |
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 | 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 |
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) |
double | SignedCurvatureAt (double t, const ON_3dVector *plane_normal=nullptr) const |
ON_3dVector | TangentAt (double t) const |
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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 | 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) |
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 | |
int | m_dim |
2 or 3 (2 so ON_LineCurve can be uses as a trimming curve) More... | |
ON_Line | m_line |
Interface. More... | |
ON_Interval | m_t |
domain More... | |
ON_LineCurve::ON_LineCurve | ( | ) |
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ON_LineCurve::ON_LineCurve | ( | const ON_LineCurve & | ) |
ON_LineCurve::ON_LineCurve | ( | const ON_2dPoint & | , |
const ON_2dPoint & | |||
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creates a 2d line curve
ON_LineCurve::ON_LineCurve | ( | const ON_3dPoint & | , |
const ON_3dPoint & | |||
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creates a 3d line curve
ON_LineCurve::ON_LineCurve | ( | const ON_Line & | ) |
ON_LineCurve::ON_LineCurve | ( | const ON_Line & | , |
double | , | ||
double | |||
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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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for debugging
Reimplemented from ON_Object.
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Domain changes from [a,b] to [-b,-a].
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.
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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Description: virtual ON_Curve::GetCurveParameterFromNurbFormParameter override. Convert a NURBS curve parameter to a curve parameter
Parameters: nurbs_t - [in] nurbs form parameter curve_t - [out] curve parameter
Remarks: If GetNurbForm returns 2, this function converts the curve parameter to the NURBS curve parameter.
See Also: ON_Curve::GetNurbForm, ON_Curve::GetNurbFormParameterFromCurveParameter virtual
Reimplemented from ON_Curve.
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Description: virtual ON_Curve::GetLength override. Get the length of the line. Parameters: length - [out] length returned here. 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 returned if the length calculation is successful.
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 line that is a prescribed distance from the start of the line 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 line 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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Description: virtual ON_Curve::GetNurbForm override. Get a NURBS curve representation of this curve. Parameters: nurbs_curve - [out] NURBS representation returned here tolerance - [in] tolerance to use when creating NURBS representation. subdomain - [in] if not nullptr, then the NURBS representation for this portion of the curve is returned. Returns: 0 unable to create NURBS representation with desired accuracy. 1 success - returned NURBS parameterization matches the curve's to the desired accuracy 2 success - returned NURBS point locus matches the curve's to the desired accuracy but, on the interior of the curve's domain, the curve's parameterization and the NURBS parameterization may not match to the desired accuracy.
Reimplemented from ON_Curve.
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Description: virtual ON_Curve::GetNurbFormParameterFromCurveParameter override. Convert a curve parameter to a NURBS curve parameter.
Parameters: curve_t - [in] curve parameter nurbs_t - [out] nurbs form parameter
Remarks: If GetNurbForm returns 2, this function converts the curve parameter to the NURBS curve parameter.
See Also: ON_Curve::GetNurbForm, ON_Curve::GetCurveParameterFromNurbFormParameter virtual
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_Curve.
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Description: virtual ON_Curve::HasNurbForm override. Does a NURBS curve representation of this curve exist. Parameters: Returns: 0 unable to create NURBS representation with desired accuracy. 1 success - returned NURBS parameterization matches the curve's to the desired accuracy 2 success - returned NURBS point locus matches the curve's to the desired accuracy but, on the interior of the curve's domain, the curve's parameterization and the NURBS parameterization may not match to the desired accuracy.
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.
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CV = euclidean location of end CV, or curve is
Reimplemented from ON_Curve.
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virtual ON_Geometry::IsDeformable() override
Reimplemented from ON_Geometry.
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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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virtual ON_Geometry override
Reimplemented from ON_Geometry.
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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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virtual
Description: Several types of ON_Curve can have the form of a polyline including a degree 1 ON_NurbsCurve, an ON_PolylineCurve, and an ON_PolyCurve all of whose segments are some form of polyline. IsPolyline tests a curve to see if it can be represented as a polyline. Parameters: pline_points - [out] if not nullptr and true is returned, then the points of the polyline form are returned here. t - [out] if not nullptr and true is returned, then the parameters of the polyline points are returned here. Returns: @untitled table 0 curve is not some form of a polyline >=2 number of points in polyline form
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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Returns true if !ON_ArePointsCoincident(Start,End) and m_t.IsIncreasing().
Reimplemented from ON_Geometry.
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virtual ON_Geometry::MakeDeformable() override
Reimplemented from ON_Geometry.
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virtual ON_Geometry override
ON_LineCurve& ON_LineCurve::operator= | ( | const ON_Line & | ) |
ON_LineCurve& ON_LineCurve::operator= | ( | const ON_LineCurve & | ) |
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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 parameterization
Implements ON_Curve.
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Description: 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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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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number of smooth spans in curve
Implements ON_Curve.
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Description: virtual ON_Curve::Split override. Divide the curve at the specified parameter. The parameter must be in the interior of the curve's domain. The pointers passed to Split must either be nullptr or point to an ON_Curve object of the same of the same type. If the pointer is nullptr, then a curve will be created in Split(). You may pass "this" as one of the pointers to Split(). Parameters: t - [in] parameter in interval Domain(). left_side - [out] left portion of curve right_side - [out] right portion of curve Example: For example, if crv were an ON_NurbsCurve, then
ON_NurbsCurve right_side; crv.Split( crv.Domain().Mid() &crv, &right_side );
would split crv at the parametric midpoint, put the left side in crv, and return the right side in right_side.
t | t = curve parameter to split curve at |
left_side | left portion returned here |
right_side | right portion returned here |
Reimplemented from ON_Curve.
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overridevirtual |
Description: Swaps object coordinate values with indices i and j.
Parameters: i - [in] coordinate index j - [in] coordinate index
Remarks: The default implementation uses the virtual Transform() function to calculate the result. If you are creating an object where Transform() is slow, coordinate swapping will be frequently used, and coordinate swapping can be quickly accomplished, then override this function.
Example:
ON_Point point(7,8,9); point.SwapCoordinates(0,2); ///< point = (9,8,7)
Reimplemented from ON_Geometry.
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overridevirtual |
Description: overrides virtual ON_Geometry::Transform(). ON_Curve::Transform() calls ON_Geometry::Transform(xform), which calls ON_Object::TransformUserData(xform), and then calls this->DestroyCurveTree(). Parameters: xform - [in] transformation to apply to object. Remarks: Classes derived from ON_Curve should call ON_Curve::Transform() to handle user data transformations and curve tree destruction and then transform their definition.
Reimplemented from ON_Curve.
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overridevirtual |
Description: virtual ON_Curve::Trim override. 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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overridevirtual |
Description: Low level archive writing tool used by ON_BinaryArchive::WriteObject(). Parameters: binary_archive - archive to write to Returns: Returns true if the write is successful. Remarks: Use ON_BinaryArchive::WriteObject() to write objects. This Write() function should just write the specific definition of this object. It should not write and any chunk typecode or length information.
The default implementation of this virtual function returns false and does nothing.
Reimplemented from ON_Object.
int ON_LineCurve::m_dim |
2 or 3 (2 so ON_LineCurve can be uses as a trimming curve)
ON_Line ON_LineCurve::m_line |
Interface.
ON_Interval ON_LineCurve::m_t |
domain