Open CASCADE Technology  6.5.4
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Public Member Functions
ProjLib_ProjectOnPlane Class Reference

Class used to project a 3d curve on a plane. The
result will be a 3d curve.

You can ask the projected curve to have the same
parametrization as the original curve.

The projection can be done along every direction not
parallel to the plane.

#include <ProjLib_ProjectOnPlane.hxx>

Inheritance diagram for ProjLib_ProjectOnPlane:
Inheritance graph
[legend]

Public Member Functions

DEFINE_STANDARD_ALLOC ProjLib_ProjectOnPlane ()
 Empty constructor.

 ProjLib_ProjectOnPlane (const gp_Ax3 &Pl)
 The projection will be normal to the Plane defined
by the Ax3 <Pl>.

 ProjLib_ProjectOnPlane (const gp_Ax3 &Pl, const gp_Dir &D)
 The projection will be along the direction <D> on
the plane defined by the Ax3 <Pl>.
//! raises if the direction <D> is parallel to the
plane <Pl>.

void Load (const Handle< Adaptor3d_HCurve > &C, const Standard_Real Tolerance, const Standard_Boolean KeepParametrization=Standard_True)
 Sets the Curve and perform the projection. if
<KeepParametrization> is true, the parametrization
of the Projected Curve <PC> will be the same as
the parametrization of the initial curve . It
meens: proj(C(u)) = PC(u) for each u. Otherwize,
the parametrization may change.

const gp_Ax3GetPlane () const
const gp_DirGetDirection () const
const Handle_Adaptor3d_HCurve & GetCurve () const
Standard_Real FirstParameter () const
Standard_Real LastParameter () const
GeomAbs_Shape Continuity () const
Standard_Integer NbIntervals (const GeomAbs_Shape S)
 If necessary, breaks the curve in intervals of
continuity <S>. And returns the number of
intervals.

void Intervals (TColStd_Array1OfReal &T, const GeomAbs_Shape S)
 Stores in <T> the parameters bounding the intervals
of continuity <S>.

The array must provide enough room to accomodate
for the parameters. i.e. T.Length() > NbIntervals()

Handle_Adaptor3d_HCurve Trim (const Standard_Real First, const Standard_Real Last, const Standard_Real Tol) const
 Returns a curve equivalent of <me> between
parameters <First> and <Last>. <Tol> is used to
test for 3d points confusion.
//! If <First> >= <Last>

Standard_Boolean IsClosed () const
Standard_Boolean IsPeriodic () const
Standard_Real Period () const
gp_Pnt Value (const Standard_Real U) const
 Computes the point of parameter U on the curve.

void D0 (const Standard_Real U, gp_Pnt &P) const
 Computes the point of parameter U on the curve.

void D1 (const Standard_Real U, gp_Pnt &P, gp_Vec &V) const
 Computes the point of parameter U on the curve with its
first derivative.
//! Raised if the continuity of the current interval
is not C1.

void D2 (const Standard_Real U, gp_Pnt &P, gp_Vec &V1, gp_Vec &V2) const
 Returns the point P of parameter U, the first and second
derivatives V1 and V2.
//! Raised if the continuity of the current interval
is not C2.

void D3 (const Standard_Real U, gp_Pnt &P, gp_Vec &V1, gp_Vec &V2, gp_Vec &V3) const
 Returns the point P of parameter U, the first, the second
and the third derivative.
//! Raised if the continuity of the current interval
is not C3.

gp_Vec DN (const Standard_Real U, const Standard_Integer N) const
 The returned vector gives the value of the derivative for the
order of derivation N.
//! Raised if the continuity of the current interval
is not CN.
//! Raised if N < 1.

Standard_Real Resolution (const Standard_Real R3d) const
 Returns the parametric resolution corresponding
to the real space resolution <R3d>.

GeomAbs_CurveType GetType () const
 Returns the type of the curve in the current
interval : Line, Circle, Ellipse, Hyperbola,
Parabola, BezierCurve, BSplineCurve, OtherCurve.

gp_Lin Line () const
gp_Circ Circle () const
gp_Elips Ellipse () const
gp_Hypr Hyperbola () const
gp_Parab Parabola () const
Standard_Integer Degree () const
Standard_Boolean IsRational () const
Standard_Integer NbPoles () const
Standard_Integer NbKnots () const
Handle_Geom_BezierCurve Bezier () const
 Warning ! this will NOT make a copy of the
Bezier Curve : If you want to modify
the Curve please make a copy yourself
Also it will NOT trim the surface to
myFirst/Last.

Handle_Geom_BSplineCurve BSpline () const
 Warning ! this will NOT make a copy of the
BSpline Curve : If you want to modify
the Curve please make a copy yourself
Also it will NOT trim the surface to
myFirst/Last.


Constructor & Destructor Documentation


Member Function Documentation

Handle_Geom_BezierCurve ProjLib_ProjectOnPlane::Bezier ( ) const [virtual]

Reimplemented from Adaptor3d_Curve.

Handle_Geom_BSplineCurve ProjLib_ProjectOnPlane::BSpline ( ) const [virtual]

Reimplemented from Adaptor3d_Curve.

Reimplemented from Adaptor3d_Curve.

Reimplemented from Adaptor3d_Curve.

void ProjLib_ProjectOnPlane::D0 ( const Standard_Real  U,
gp_Pnt P 
) const [virtual]

Reimplemented from Adaptor3d_Curve.

void ProjLib_ProjectOnPlane::D1 ( const Standard_Real  U,
gp_Pnt P,
gp_Vec V 
) const [virtual]

Reimplemented from Adaptor3d_Curve.

void ProjLib_ProjectOnPlane::D2 ( const Standard_Real  U,
gp_Pnt P,
gp_Vec V1,
gp_Vec V2 
) const [virtual]

Reimplemented from Adaptor3d_Curve.

void ProjLib_ProjectOnPlane::D3 ( const Standard_Real  U,
gp_Pnt P,
gp_Vec V1,
gp_Vec V2,
gp_Vec V3 
) const [virtual]

Reimplemented from Adaptor3d_Curve.

Reimplemented from Adaptor3d_Curve.

Reimplemented from Adaptor3d_Curve.

Reimplemented from Adaptor3d_Curve.

Reimplemented from Adaptor3d_Curve.

const Handle_Adaptor3d_HCurve& ProjLib_ProjectOnPlane::GetCurve ( ) const

Reimplemented from Adaptor3d_Curve.

Reimplemented from Adaptor3d_Curve.

Reimplemented from Adaptor3d_Curve.

Reimplemented from Adaptor3d_Curve.

Reimplemented from Adaptor3d_Curve.

Reimplemented from Adaptor3d_Curve.

Reimplemented from Adaptor3d_Curve.

gp_Lin ProjLib_ProjectOnPlane::Line ( ) const [virtual]

Reimplemented from Adaptor3d_Curve.

Reimplemented from Adaptor3d_Curve.

Reimplemented from Adaptor3d_Curve.

Reimplemented from Adaptor3d_Curve.

Reimplemented from Adaptor3d_Curve.

Reimplemented from Adaptor3d_Curve.

Reimplemented from Adaptor3d_Curve.

Handle_Adaptor3d_HCurve ProjLib_ProjectOnPlane::Trim ( const Standard_Real  First,
const Standard_Real  Last,
const Standard_Real  Tol 
) const [virtual]

Reimplemented from Adaptor3d_Curve.

Reimplemented from Adaptor3d_Curve.


The documentation for this class was generated from the following file: