Open CASCADE Technology
6.5.4
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Describes the characteristics of plate surface objects
returned by BuildPlateSurface::Surface. These can be
used to verify the quality of the resulting surface before
approximating it to a Geom_BSpline surface generated
by MakeApprox. This proves necessary in cases where
you want to use the resulting surface as the support for
a shape. The algorithmically generated surface cannot
fill this function as is, and as a result must be converted first.
#include <GeomPlate_Surface.hxx>
Public Member Functions | |
GeomPlate_Surface (const Handle< Geom_Surface > &Surfinit, const Plate_Plate &Surfinter) | |
void | UReverse () |
Reverses the U direction of parametrization of <me>. The bounds of the surface are not modified. | |
Standard_Real | UReversedParameter (const Standard_Real U) const |
Return the parameter on the Ureversed surface for the point of parameter U on <me>. me->UReversed()->Value(me->UReversedParameter(U),V) is the same point as me->Value(U,V) | |
void | VReverse () |
Reverses the V direction of parametrization of <me>. The bounds of the surface are not modified. | |
Standard_Real | VReversedParameter (const Standard_Real V) const |
Return the parameter on the Vreversed surface for the point of parameter V on <me>. me->VReversed()->Value(U,me->VReversedParameter(V)) is the same point as me->Value(U,V) | |
virtual 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 does not change <U> and <V> It can be redefined. For example on the Plane, Cylinder, Cone, Revolved and Extruded surfaces. | |
virtual 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 an identity transformation It can be redefined. For example on the Plane, Cylinder, Cone, Revolved and Extruded surfaces. | |
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. If the surface is infinite, this function can return a value equal to Precision::Infinite: instead of Standard_Real::LastReal. | |
Standard_Boolean | IsUClosed () const |
Is the surface closed in the parametric direction U ? Returns True if for each parameter V the distance between the point P (UFirst, V) and P (ULast, V) is lower or equal to Resolution from gp. UFirst and ULast are the parametric bounds in the U direction. | |
Standard_Boolean | IsVClosed () const |
Is the surface closed in the parametric direction V ? Returns True if for each parameter U the distance between the point P (U, VFirst) and P (U, VLast) is lower or equal to Resolution from gp. VFirst and VLast are the parametric bounds in the V direction. | |
Standard_Boolean | IsUPeriodic () const |
Is the parametrization of a surface periodic in the direction U ? It is possible only if the surface is closed in this parametric direction and if the following relation is satisfied : for each parameter V the distance between the point P (U, V) and the point P (U + T, V) is lower or equal to Resolution from package gp. T is the parametric period and must be a constant. | |
virtual Standard_Real | UPeriod () const |
returns the Uperiod. //! raises if the surface is not uperiodic. | |
Standard_Boolean | IsVPeriodic () const |
Is the parametrization of a surface periodic in the direction U ? It is possible only if the surface is closed in this parametric direction and if the following relation is satisfied : for each parameter V the distance between the point P (U, V) and the point P (U + T, V) is lower or equal to Resolution from package gp. T is the parametric period and must be a constant. | |
virtual Standard_Real | VPeriod () const |
returns the Vperiod. //! raises if the surface is not vperiodic. | |
Handle_Geom_Curve | UIso (const Standard_Real U) const |
Computes the U isoparametric curve. | |
Handle_Geom_Curve | VIso (const Standard_Real V) const |
Computes the V isoparametric curve. | |
GeomAbs_Shape | Continuity () const |
Global Continuity of the surface in direction U and V : C0 : only geometric continuity, C1 : continuity of the first derivative all along the surface, C2 : continuity of the second derivative all along the surface, C3 : continuity of the third derivative all along the surface, G1 : tangency continuity all along the surface, G2 : curvature continuity all along the surface, CN : the order of continuity is infinite. Example : If the surface is C1 in the V parametric direction and C2 in the U parametric direction Shape = C1. | |
Standard_Boolean | IsCNu (const Standard_Integer N) const |
Returns the order of continuity of the surface in the U parametric direction. //! Raised if N < 0. | |
Standard_Boolean | IsCNv (const Standard_Integer N) const |
Returns the order of continuity of the surface in the V parametric direction. //! Raised if N < 0. | |
void | D0 (const Standard_Real U, const Standard_Real V, gp_Pnt &P) const |
Computes the point of parameter U,V on the surface. Raised only for an "OffsetSurface" if it is not possible to compute the current point. | |
void | D1 (const Standard_Real U, const Standard_Real V, gp_Pnt &P, gp_Vec &D1U, gp_Vec &D1V) const |
Computes the point P and the first derivatives in the directions U and V at this point. //! Raised if the continuity of the surface is not C1. | |
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 |
Computes the point P, the first and the second derivatives in the directions U and V at this point. //! Raised if the continuity of the surface is not C2. | |
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 point P, the first,the second and the third derivatives in the directions U and V at this point. //! Raised if the continuity of the surface is not C2. | |
gp_Vec | DN (const Standard_Real U, const Standard_Real V, const Standard_Integer Nu, const Standard_Integer Nv) const |
---Purpose ; Computes the derivative of order Nu in the direction U and Nv in the direction V at the point P(U, V). Raised if the continuity of the surface is not CNu in the U direction or not CNv in the V direction. //! Raised if Nu + Nv < 1 or Nu < 0 or Nv < 0. | |
Handle_Geom_Geometry | Copy () const |
Creates a new object which is a copy of this geometric object. | |
void | Transform (const gp_Trsf &T) |
Transformation of a geometric object. This tansformation can be a translation, a rotation, a symmetry, a scaling or a complex transformation obtained by combination of the previous elementaries transformations. (see class Transformation of the package Geom). | |
Handle_Geom_Surface | CallSurfinit () const |
void | SetBounds (const Standard_Real Umin, const Standard_Real Umax, const Standard_Real Vmin, const Standard_Real Vmax) |
void | RealBounds (Standard_Real &U1, Standard_Real &U2, Standard_Real &V1, Standard_Real &V2) const |
void | Constraints (TColgp_SequenceOfXY &Seq) const |
GeomPlate_Surface::GeomPlate_Surface | ( | const Handle< Geom_Surface > & | Surfinit, |
const Plate_Plate & | Surfinter | ||
) |
void GeomPlate_Surface::Bounds | ( | Standard_Real & | U1, |
Standard_Real & | U2, | ||
Standard_Real & | V1, | ||
Standard_Real & | V2 | ||
) | const [virtual] |
Implements Geom_Surface.
Handle_Geom_Surface GeomPlate_Surface::CallSurfinit | ( | ) | const |
void GeomPlate_Surface::Constraints | ( | TColgp_SequenceOfXY & | Seq | ) | const |
GeomAbs_Shape GeomPlate_Surface::Continuity | ( | ) | const [virtual] |
Implements Geom_Surface.
Handle_Geom_Geometry GeomPlate_Surface::Copy | ( | ) | const [virtual] |
Implements Geom_Geometry.
void GeomPlate_Surface::D0 | ( | const Standard_Real | U, |
const Standard_Real | V, | ||
gp_Pnt & | P | ||
) | const [virtual] |
Implements Geom_Surface.
void GeomPlate_Surface::D1 | ( | const Standard_Real | U, |
const Standard_Real | V, | ||
gp_Pnt & | P, | ||
gp_Vec & | D1U, | ||
gp_Vec & | D1V | ||
) | const [virtual] |
Implements Geom_Surface.
void GeomPlate_Surface::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 [virtual] |
Implements Geom_Surface.
void GeomPlate_Surface::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 [virtual] |
Implements Geom_Surface.
gp_Vec GeomPlate_Surface::DN | ( | const Standard_Real | U, |
const Standard_Real | V, | ||
const Standard_Integer | Nu, | ||
const Standard_Integer | Nv | ||
) | const [virtual] |
Implements Geom_Surface.
Standard_Boolean GeomPlate_Surface::IsCNu | ( | const Standard_Integer | N | ) | const [virtual] |
Implements Geom_Surface.
Standard_Boolean GeomPlate_Surface::IsCNv | ( | const Standard_Integer | N | ) | const [virtual] |
Implements Geom_Surface.
Standard_Boolean GeomPlate_Surface::IsUClosed | ( | ) | const [virtual] |
Implements Geom_Surface.
Standard_Boolean GeomPlate_Surface::IsUPeriodic | ( | ) | const [virtual] |
Implements Geom_Surface.
Standard_Boolean GeomPlate_Surface::IsVClosed | ( | ) | const [virtual] |
Implements Geom_Surface.
Standard_Boolean GeomPlate_Surface::IsVPeriodic | ( | ) | const [virtual] |
Implements Geom_Surface.
virtual gp_GTrsf2d GeomPlate_Surface::ParametricTransformation | ( | const gp_Trsf & | T | ) | const [virtual] |
Reimplemented from Geom_Surface.
void GeomPlate_Surface::RealBounds | ( | Standard_Real & | U1, |
Standard_Real & | U2, | ||
Standard_Real & | V1, | ||
Standard_Real & | V2 | ||
) | const |
void GeomPlate_Surface::SetBounds | ( | const Standard_Real | Umin, |
const Standard_Real | Umax, | ||
const Standard_Real | Vmin, | ||
const Standard_Real | Vmax | ||
) |
void GeomPlate_Surface::Transform | ( | const gp_Trsf & | T | ) | [virtual] |
Implements Geom_Geometry.
virtual void GeomPlate_Surface::TransformParameters | ( | Standard_Real & | U, |
Standard_Real & | V, | ||
const gp_Trsf & | T | ||
) | const [virtual] |
Reimplemented from Geom_Surface.
Handle_Geom_Curve GeomPlate_Surface::UIso | ( | const Standard_Real | U | ) | const [virtual] |
Implements Geom_Surface.
virtual Standard_Real GeomPlate_Surface::UPeriod | ( | ) | const [virtual] |
Reimplemented from Geom_Surface.
void GeomPlate_Surface::UReverse | ( | ) | [virtual] |
Implements Geom_Surface.
Standard_Real GeomPlate_Surface::UReversedParameter | ( | const Standard_Real | U | ) | const [virtual] |
Implements Geom_Surface.
Handle_Geom_Curve GeomPlate_Surface::VIso | ( | const Standard_Real | V | ) | const [virtual] |
Implements Geom_Surface.
virtual Standard_Real GeomPlate_Surface::VPeriod | ( | ) | const [virtual] |
Reimplemented from Geom_Surface.
void GeomPlate_Surface::VReverse | ( | ) | [virtual] |
Implements Geom_Surface.
Standard_Real GeomPlate_Surface::VReversedParameter | ( | const Standard_Real | V | ) | const [virtual] |
Implements Geom_Surface.