#include <FairCurve_Batten.hxx>
Inheritance diagram for FairCurve_Batten:
Public Member Functions | |
void * | operator new (size_t, void *anAddress) |
void * | operator new (size_t size) |
void | operator delete (void *anAddress) |
Standard_EXPORT | FairCurve_Batten (const gp_Pnt2d &P1, const gp_Pnt2d &P2, const Standard_Real Height, const Standard_Real Slope=0) |
Constructor with the two points and the geometrical characteristics of the batten (elastic beam) Height is the height of the deformation, and Slope is the slope value, initialized at 0. The user can then supply the desired slope value by the method, SetSlope. Other parameters are initialized as follow : - FreeSliding = False - ConstraintOrder1 = 1 - ConstraintOrder2 = 1 - Angle1 = 0 - Angle2 = 0 - SlidingFactor = 1 Exceptions NegativeValue if Height is less than or equal to 0. NullValue if the distance between P1 and P2 is less than or equal to the tolerance value for distance in Precision::Confusion: P1.IsEqual(P2, Precision::Confusion()). The function gp_Pnt2d::IsEqual tests to see if this is the case. . | |
virtual Standard_EXPORT void | Delete () |
virtual Standard_EXPORT | ~FairCurve_Batten () |
void | SetFreeSliding (const Standard_Boolean FreeSliding) |
Freesliding is initialized with the default setting false. When Freesliding is set to true and, as a result, sliding is free, the sliding factor is automatically computed to satisfy the equilibrium of the batten. . | |
void | SetConstraintOrder1 (const Standard_Integer ConstraintOrder) |
Allows you to change the order of the constraint on the first point. ConstraintOrder has the default setting of 1. The following settings are available: - 0-the curve must pass through a point - 1-the curve must pass through a point and have a given tangent - 2-the curve must pass through a point, have a given tangent and a given curvature. The third setting is only valid for FairCurve_MinimalVariation curves. These constraints, though geometric, represent the mechanical constraints due, for example, to the resistance of the material the actual physical batten is made of. . | |
void | SetConstraintOrder2 (const Standard_Integer ConstraintOrder) |
Allows you to change the order of the constraint on the second point. ConstraintOrder is initialized with the default setting of 1. The following settings are available: - 0-the curve must pass through a point - 1-the curve must pass through a point and have a given tangent - 2-the curve must pass through a point, have a given tangent and a given curvature. The third setting is only valid for FairCurve_MinimalVariation curves. These constraints, though geometric, represent the mechanical constraints due, for example, to the resistance of the material the actual physical batten is made of. . | |
Standard_EXPORT void | SetP1 (const gp_Pnt2d &P1) |
Allows you to change the location of the point, P1, and in doing so, modify the curve. Warning This method changes the angle as well as the point. Exceptions NullValue if the distance between P1 and P2 is less than or equal to the tolerance value for distance in Precision::Confusion: P1.IsEqual(P2, Precision::Confusion()). The function gp_Pnt2d::IsEqual tests to see if this is the case. . | |
Standard_EXPORT void | SetP2 (const gp_Pnt2d &P2) |
Allows you to change the location of the point, P1, and in doing so, modify the curve. Warning This method changes the angle as well as the point. Exceptions NullValue if the distance between P1 and P2 is less than or equal to the tolerance value for distance in Precision::Confusion: P1.IsEqual(P2, Precision::Confusion()). The function gp_Pnt2d::IsEqual tests to see if this is the case. . | |
void | SetAngle1 (const Standard_Real Angle1) |
Allows you to change the angle Angle1 at the first point, P1. The default setting is 0. . | |
void | SetAngle2 (const Standard_Real Angle2) |
Allows you to change the angle Angle2 at the second point, P2. The default setting is 0. . | |
void | SetHeight (const Standard_Real Height) |
Allows you to change the height of the deformation. Raises NegativeValue; -- if Height <= 0 if Height <= 0 . | |
void | SetSlope (const Standard_Real Slope) |
Allows you to set the slope value, Slope. . | |
void | SetSlidingFactor (const Standard_Real SlidingFactor) |
Allows you to change the ratio SlidingFactor. This compares the length of the batten and the reference length, which is, in turn, a function of the constraints. This modification has one of the following two effects: - if you increase the value, it inflates the batten - if you decrease the value, it flattens the batten. When sliding is free, the sliding factor is automatically computed to satisfy the equilibrium of the batten. When sliding is imposed, a value is required for the sliding factor. SlidingFactor is initialized with the default setting of 1. . | |
virtual Standard_EXPORT Standard_Boolean | Compute (FairCurve_AnalysisCode &Code, const Standard_Integer NbIterations=50, const Standard_Real Tolerance=1.0e-3) |
Performs the algorithm, using the arguments Code, NbIterations and Tolerance and computes the curve with respect to the constraints. Code will have one of the following values: - OK - NotConverged - InfiniteSliding - NullHeight The parameters Tolerance and NbIterations control how precise the computation is, and how long it will take. . | |
Standard_EXPORT Standard_Real | SlidingOfReference () const |
Computes the real number value for length Sliding of Reference for new constraints. If you want to give a specific length to a batten curve, use the following syntax: b.SetSlidingFactor(L / b.SlidingOfReference()) where b is the name of the batten curve object. . | |
Standard_Boolean | GetFreeSliding () const |
Returns the initial free sliding value, false by default. Free sliding is generally more aesthetically pleasing than constrained sliding. However, the computation can fail with values such as angles greater than PI/2. This is because the resulting batten length is theoretically infinite. . | |
Standard_Integer | GetConstraintOrder1 () const |
Returns the established first constraint order. . | |
Standard_Integer | GetConstraintOrder2 () const |
Returns the established second constraint order. . | |
const gp_Pnt2d & | GetP1 () const |
Returns the established location of the point P1. . | |
const gp_Pnt2d & | GetP2 () const |
Returns the established location of the point P2. . | |
Standard_Real | GetAngle1 () const |
Returns the established first angle. . | |
Standard_Real | GetAngle2 () const |
Returns the established second angle. . | |
Standard_Real | GetHeight () const |
Returns the thickness of the lathe. . | |
Standard_Real | GetSlope () const |
Returns the established slope value. . | |
Standard_Real | GetSlidingFactor () const |
Returns the initial sliding factor. . | |
Standard_EXPORT Handle_Geom2d_BSplineCurve | Curve () const |
Returns the computed curve a 2d BSpline. . | |
virtual Standard_EXPORT void | Dump (Standard_OStream &o) const |
Prints on the stream o information on the current state of the object. . | |
Protected Member Functions | |
Standard_EXPORT Standard_Real | SlidingOfReference (const Standard_Real D, const Standard_Real A1, const Standard_Real A2) const |
Standard_EXPORT Standard_Real | Compute (const Standard_Real D, const Standard_Real A1, const Standard_Real A2) const |
Standard_EXPORT Standard_Real | Compute (const Standard_Real D, const Standard_Real A) const |
Returns the effective geometrical constraints at the last batten computation. This effectives values may be not equal with the wanted values if - if the value is "free" - in the case of incomplete computation : collapse, infinite sliding, height of batten will be negative at end points . | |
Protected Attributes | |
FairCurve_AnalysisCode | myCode |
gp_Pnt2d | OldP1 |
gp_Pnt2d | OldP2 |
Standard_Real | OldAngle1 |
Standard_Real | OldAngle2 |
Standard_Real | OldHeight |
Standard_Real | OldSlope |
Standard_Real | OldSlidingFactor |
Standard_Boolean | OldFreeSliding |
Standard_Integer | OldConstraintOrder1 |
Standard_Integer | OldConstraintOrder2 |
gp_Pnt2d | NewP1 |
gp_Pnt2d | NewP2 |
Standard_Real | NewAngle1 |
Standard_Real | NewAngle2 |
Standard_Real | NewHeight |
Standard_Real | NewSlope |
Standard_Real | NewSlidingFactor |
Standard_Boolean | NewFreeSliding |
Standard_Integer | NewConstraintOrder1 |
Standard_Integer | NewConstraintOrder2 |
Standard_Integer | Degree |
Handle_TColgp_HArray1OfPnt2d | Poles |
Handle_TColStd_HArray1OfReal | Flatknots |
Handle_TColStd_HArray1OfReal | Knots |
Handle_TColStd_HArray1OfInteger | Mults |
Private Member Functions | |
Standard_EXPORT Standard_Boolean | Compute (const gp_Vec2d &DeltaP1, const gp_Vec2d &DeltaP2, const Standard_Real DeltaAngle1, const Standard_Real DeltaAngle2, FairCurve_AnalysisCode &ACode, const Standard_Integer NbIterations, const Standard_Real Tolerance) |
compute the curve with respect of the delta-constraints. | |
Standard_EXPORT void | Angles (const gp_Pnt2d &P1, const gp_Pnt2d &P2) |
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Reimplemented in FairCurve_MinimalVariation. |
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Reimplemented in FairCurve_MinimalVariation. |
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Reimplemented in FairCurve_MinimalVariation. |
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Reimplemented in FairCurve_MinimalVariation. |
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Reimplemented in FairCurve_MinimalVariation. |
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