#include <Geom_SurfaceOfLinearExtrusion.hxx>
Inheritance diagram for Geom_SurfaceOfLinearExtrusion:
Public Member Functions | |
Standard_EXPORT | Geom_SurfaceOfLinearExtrusion (const Handle(Geom_Curve)&C, const gp_Dir &V) |
V is the direction of extrusion. C is the extruded curve. The form of a SurfaceOfLinearExtrusion can be : . ruled surface (RuledForm), . a cylindrical surface if the extruded curve is a circle or a trimmed circle (CylindricalForm), . a plane surface if the extruded curve is a Line (PlanarForm). Warnings : Degenerated surface cases are not detected. For example if the curve C is a line and V is parallel to the direction of this line. . | |
Standard_EXPORT void | SetDirection (const gp_Dir &V) |
Assigns V as the "direction of extrusion" for this surface of linear extrusion. . | |
Standard_EXPORT void | SetBasisCurve (const Handle(Geom_Curve)&C) |
Modifies this surface of linear extrusion by redefining its "basis curve" (the "extruded curve"). . | |
Standard_EXPORT void | UReverse () |
Changes the orientation of this surface of linear extrusion in the u parametric direction. The bounds of the surface are not changed, but the given parametric direction is reversed. Hence the orientation of the surface is reversed. In the case of a surface of linear extrusion: - UReverse reverses the basis curve, and - VReverse reverses the direction of linear extrusion. . | |
Standard_EXPORT Standard_Real | UReversedParameter (const Standard_Real U) const |
Computes the u parameter on the modified surface, produced by reversing its u parametric direction, for any point of u parameter U on this surface of linear extrusion. In the case of an extruded surface: - UReverseParameter returns the reversed parameter given by the function ReversedParameter called with U on the basis curve, . | |
Standard_EXPORT void | VReverse () |
Changes the orientation of this surface of linear extrusion in the v parametric direction. The bounds of the surface are not changed, but the given parametric direction is reversed. Hence the orientation of the surface is reversed. In the case of a surface of linear extrusion: - UReverse reverses the basis curve, and - VReverse reverses the direction of linear extrusion. . | |
Standard_EXPORT Standard_Real | VReversedParameter (const Standard_Real V) const |
Computes the v parameter on the modified surface, produced by reversing its u v parametric direction, for any point of v parameter V on this surface of linear extrusion. In the case of an extruded surface VReverse returns -V. . | |
Standard_EXPORT void | Bounds (Standard_Real &U1, Standard_Real &U2, Standard_Real &V1, Standard_Real &V2) const |
Returns the parametric bounds U1, U2, V1 and V2 of this surface of linear extrusion. A surface of linear extrusion is infinite in the v parametric direction, so: - V1 = Standard_Real::RealFirst() - V2 = Standard_Real::RealLast(). . | |
Standard_EXPORT Standard_Boolean | IsUClosed () const |
IsUClosed returns true if the "basis curve" of this surface of linear extrusion is closed. . | |
Standard_EXPORT Standard_Boolean | IsVClosed () const |
IsVClosed always returns false. . | |
Standard_EXPORT Standard_Boolean | IsCNu (const Standard_Integer N) const |
IsCNu returns true if the degree of continuity for the "basis curve" of this surface of linear extrusion is at least N. Raises RangeError if N < 0. . | |
Standard_EXPORT Standard_Boolean | IsCNv (const Standard_Integer N) const |
IsCNv always returns true. . | |
Standard_EXPORT Standard_Boolean | IsUPeriodic () const |
IsUPeriodic returns true if the "basis curve" of this surface of linear extrusion is periodic. . | |
Standard_EXPORT Standard_Boolean | IsVPeriodic () const |
IsVPeriodic always returns false. . | |
Standard_EXPORT Handle_Geom_Curve | UIso (const Standard_Real U) const |
Computes the U isoparametric curve of this surface of linear extrusion. This is the line parallel to the direction of extrusion, passing through the point of parameter U of the basis curve. . | |
Standard_EXPORT Handle_Geom_Curve | VIso (const Standard_Real V) const |
Computes the V isoparametric curve of this surface of linear extrusion. This curve is obtained by translating the extruded curve in the direction of extrusion, with the magnitude V. . | |
Standard_EXPORT void | D0 (const Standard_Real U, const Standard_Real V, gp_Pnt &P) const |
Computes the point P (U, V) on the surface. The parameter U is the parameter on the extruded curve. The parametrization V is a linear parametrization, and the direction of parametrization is the direction of extrusion. If the point is on the extruded curve, V = 0.0 . | |
Standard_EXPORT void | D1 (const Standard_Real U, const Standard_Real V, gp_Pnt &P, gp_Vec &D1U, gp_Vec &D1V) const |
Computes the current point and the first derivatives in the directions U and V. Raises UndefinedDerivative if the continuity of the surface is not C1. . | |
Standard_EXPORT void | D2 (const Standard_Real U, const Standard_Real V, gp_Pnt &P, gp_Vec &D1U, gp_Vec &D1V, gp_Vec &D2U, gp_Vec &D2V, gp_Vec &D2UV) const |
--- Purpose ; Computes the current point, the first and the second derivatives in the directions U and V. Raises UndefinedDerivative if the continuity of the surface is not C2. | |
Standard_EXPORT void | D3 (const Standard_Real U, const Standard_Real V, gp_Pnt &P, gp_Vec &D1U, gp_Vec &D1V, gp_Vec &D2U, gp_Vec &D2V, gp_Vec &D2UV, gp_Vec &D3U, gp_Vec &D3V, gp_Vec &D3UUV, gp_Vec &D3UVV) const |
Computes the current point, the first,the second and the third derivatives in the directions U and V. Raises UndefinedDerivative if the continuity of the surface is not C3. . | |
Standard_EXPORT gp_Vec | DN (const Standard_Real U, const Standard_Real V, const Standard_Integer Nu, const Standard_Integer Nv) const |
Computes the derivative of order Nu in the direction u and Nv in the direction v. Raises UndefinedDerivative if the continuity of the surface is not CNu in the u direction and CNv in the v direction. Raises RangeError if Nu + Nv < 1 or Nu < 0 or Nv < 0. . | |
Standard_EXPORT void | LocalD0 (const Standard_Real U, const Standard_Real V, const Standard_Integer USide, gp_Pnt &P) const |
The following functions evaluates the local derivatives on surface. Useful to manage discontinuities on the surface. if Side = 1 -> P = S( U+,V ) if Side = -1 -> P = S( U-,V ) else P is betveen discontinuities can be evaluated using methods of global evaluations P = S( U ,V ) . | |
Standard_EXPORT void | LocalD1 (const Standard_Real U, const Standard_Real V, const Standard_Integer USide, gp_Pnt &P, gp_Vec &D1U, gp_Vec &D1V) const |
Standard_EXPORT void | LocalD2 (const Standard_Real U, const Standard_Real V, const Standard_Integer USide, gp_Pnt &P, gp_Vec &D1U, gp_Vec &D1V, gp_Vec &D2U, gp_Vec &D2V, gp_Vec &D2UV) const |
Standard_EXPORT void | LocalD3 (const Standard_Real U, const Standard_Real V, const Standard_Integer USide, gp_Pnt &P, gp_Vec &D1U, gp_Vec &D1V, gp_Vec &D2U, gp_Vec &D2V, gp_Vec &D2UV, gp_Vec &D3U, gp_Vec &D3V, gp_Vec &D3UUV, gp_Vec &D3UVV) const |
Standard_EXPORT gp_Vec | LocalDN (const Standard_Real U, const Standard_Real V, const Standard_Integer USide, const Standard_Integer Nu, const Standard_Integer Nv) const |
Standard_EXPORT void | Transform (const gp_Trsf &T) |
Applies the transformation T to this surface of linear extrusion. . | |
virtual Standard_EXPORT void | TransformParameters (Standard_Real &U, Standard_Real &V, const gp_Trsf &T) const |
Computes the parameters on the transformed surface for the transform of the point of parameters U,V on <me>. me->Transformed(T)->Value(U',V') is the same point as me->Value(U,V).Transformed(T) Where U',V' are the new values of U,V after calling me->TranformParameters(U,V,T) This methods multiplies : U by BasisCurve()->ParametricTransformation(T) V by T.ScaleFactor() . | |
virtual Standard_EXPORT gp_GTrsf2d | ParametricTransformation (const gp_Trsf &T) const |
Returns a 2d transformation used to find the new parameters of a point on the transformed surface. me->Transformed(T)->Value(U',V') is the same point as me->Value(U,V).Transformed(T) Where U',V' are obtained by transforming U,V with th 2d transformation returned by me->ParametricTransformation(T) This methods returns a scale U by BasisCurve()->ParametricTransformation(T) V by T.ScaleFactor() . | |
Standard_EXPORT Handle_Geom_Geometry | Copy () const |
Creates a new object which is a copy of this surface of linear extrusion. . | |
Standard_EXPORT const | Handle (Standard_Type)&DynamicType() const |
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Implements Geom_Surface. |
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Implements Geom_Geometry. |
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Implements Geom_Surface. |
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Implements Geom_Surface. |
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Implements Geom_Surface. |
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Implements Geom_Surface. |
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Reimplemented from Geom_SweptSurface. |
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Implements Geom_Surface. |
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Implements Geom_Surface. |
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Implements Geom_Surface. |
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Implements Geom_Surface. |
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Implements Geom_Surface. |
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Implements Geom_Surface. |
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Reimplemented from Geom_Surface. |
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Implements Geom_Geometry. |
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Reimplemented from Geom_Surface. |
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Implements Geom_Surface. |
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Implements Geom_Surface. |
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Implements Geom_Surface. |
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Implements Geom_Surface. |
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Implements Geom_Surface. |
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Implements Geom_Surface. |