Extrema_Curve2dTool Class Reference

`#include <Extrema_Curve2dTool.hxx>`

## Static Public Member Functions

static Standard_Real FirstParameter (const Adaptor2d_Curve2d &C)

static Standard_Real LastParameter (const Adaptor2d_Curve2d &C)

static GeomAbs_Shape Continuity (const Adaptor2d_Curve2d &C)

static Standard_Integer NbIntervals (const Adaptor2d_Curve2d &C, const GeomAbs_Shape S)
If necessary, breaks the curve in intervals of continuity <S>. And returns the number of intervals. More...

static void Intervals (const Adaptor2d_Curve2d &C, TColStd_Array1OfReal &T, const GeomAbs_Shape S)
Stores in <T> the parameters bounding the intervals of continuity <S>. More...

static Standard_Boolean IsClosed (const Adaptor2d_Curve2d &C)

static Standard_Boolean IsPeriodic (const Adaptor2d_Curve2d &C)

static Standard_Real Period (const Adaptor2d_Curve2d &C)

static gp_Pnt2d Value (const Adaptor2d_Curve2d &C, const Standard_Real U)
Computes the point of parameter U on the curve. More...

static void D0 (const Adaptor2d_Curve2d &C, const Standard_Real U, gp_Pnt2d &P)
Computes the point of parameter U on the curve. More...

static void D1 (const Adaptor2d_Curve2d &C, const Standard_Real U, gp_Pnt2d &P, gp_Vec2d &V)
Computes the point of parameter U on the curve with its first derivative. More...

static void D2 (const Adaptor2d_Curve2d &C, const Standard_Real U, gp_Pnt2d &P, gp_Vec2d &V1, gp_Vec2d &V2)
Returns the point P of parameter U, the first and second derivatives V1 and V2. More...

static void D3 (const Adaptor2d_Curve2d &C, const Standard_Real U, gp_Pnt2d &P, gp_Vec2d &V1, gp_Vec2d &V2, gp_Vec2d &V3)
Returns the point P of parameter U, the first, the second and the third derivative. More...

static gp_Vec2d DN (const Adaptor2d_Curve2d &C, const Standard_Real U, const Standard_Integer N)
The returned vector gives the value of the derivative for the order of derivation N. More...

static Standard_Real Resolution (const Adaptor2d_Curve2d &C, const Standard_Real R3d)
Returns the parametric resolution corresponding to the real space resolution <R3d>. More...

static GeomAbs_CurveType GetType (const Adaptor2d_Curve2d &C)
Returns the type of the curve in the current interval : Line, Circle, Ellipse, Hyperbola, Parabola, BezierCurve, BSplineCurve, OtherCurve. More...

static gp_Lin2d Line (const Adaptor2d_Curve2d &C)

static gp_Circ2d Circle (const Adaptor2d_Curve2d &C)

static gp_Elips2d Ellipse (const Adaptor2d_Curve2d &C)

static gp_Hypr2d Hyperbola (const Adaptor2d_Curve2d &C)

static gp_Parab2d Parabola (const Adaptor2d_Curve2d &C)

static Standard_Integer Degree (const Adaptor2d_Curve2d &C)

static Standard_Boolean IsRational (const Adaptor2d_Curve2d &C)

static Standard_Integer NbPoles (const Adaptor2d_Curve2d &C)

static Standard_Integer NbKnots (const Adaptor2d_Curve2d &C)

static Handle< Geom2d_BezierCurveBezier (const Adaptor2d_Curve2d &C)

static Handle< Geom2d_BSplineCurveBSpline (const Adaptor2d_Curve2d &C)

## Member Function Documentation

 static Handle< Geom2d_BezierCurve > Extrema_Curve2dTool::Bezier ( const Adaptor2d_Curve2d & C )
static
 static Handle< Geom2d_BSplineCurve > Extrema_Curve2dTool::BSpline ( const Adaptor2d_Curve2d & C )
static
 static gp_Circ2d Extrema_Curve2dTool::Circle ( const Adaptor2d_Curve2d & C )
static
 static GeomAbs_Shape Extrema_Curve2dTool::Continuity ( const Adaptor2d_Curve2d & C )
static
 static void Extrema_Curve2dTool::D0 ( const Adaptor2d_Curve2d & C, const Standard_Real U, gp_Pnt2d & P )
static

Computes the point of parameter U on the curve.

 static void Extrema_Curve2dTool::D1 ( const Adaptor2d_Curve2d & C, const Standard_Real U, gp_Pnt2d & P, gp_Vec2d & V )
static

Computes the point of parameter U on the curve with its first derivative.

 static void Extrema_Curve2dTool::D2 ( const Adaptor2d_Curve2d & C, const Standard_Real U, gp_Pnt2d & P, gp_Vec2d & V1, gp_Vec2d & V2 )
static

Returns the point P of parameter U, the first and second derivatives V1 and V2.

 static void Extrema_Curve2dTool::D3 ( const Adaptor2d_Curve2d & C, const Standard_Real U, gp_Pnt2d & P, gp_Vec2d & V1, gp_Vec2d & V2, gp_Vec2d & V3 )
static

Returns the point P of parameter U, the first, the second and the third derivative.

 static Standard_Integer Extrema_Curve2dTool::Degree ( const Adaptor2d_Curve2d & C )
static
 static gp_Vec2d Extrema_Curve2dTool::DN ( const Adaptor2d_Curve2d & C, const Standard_Real U, const Standard_Integer N )
static

The returned vector gives the value of the derivative for the order of derivation N.

 static gp_Elips2d Extrema_Curve2dTool::Ellipse ( const Adaptor2d_Curve2d & C )
static
 static Standard_Real Extrema_Curve2dTool::FirstParameter ( const Adaptor2d_Curve2d & C )
static
 static GeomAbs_CurveType Extrema_Curve2dTool::GetType ( const Adaptor2d_Curve2d & C )
static

Returns the type of the curve in the current interval : Line, Circle, Ellipse, Hyperbola, Parabola, BezierCurve, BSplineCurve, OtherCurve.

 static gp_Hypr2d Extrema_Curve2dTool::Hyperbola ( const Adaptor2d_Curve2d & C )
static
 static void Extrema_Curve2dTool::Intervals ( const Adaptor2d_Curve2d & C, TColStd_Array1OfReal & T, const GeomAbs_Shape S )
static

Stores in <T> the parameters bounding the intervals of continuity <S>.

 static Standard_Boolean Extrema_Curve2dTool::IsClosed ( const Adaptor2d_Curve2d & C )
static
 static Standard_Boolean Extrema_Curve2dTool::IsPeriodic ( const Adaptor2d_Curve2d & C )
static
 static Standard_Boolean Extrema_Curve2dTool::IsRational ( const Adaptor2d_Curve2d & C )
static
 static Standard_Real Extrema_Curve2dTool::LastParameter ( const Adaptor2d_Curve2d & C )
static
 static gp_Lin2d Extrema_Curve2dTool::Line ( const Adaptor2d_Curve2d & C )
static
 static Standard_Integer Extrema_Curve2dTool::NbIntervals ( const Adaptor2d_Curve2d & C, const GeomAbs_Shape S )
static

If necessary, breaks the curve in intervals of continuity <S>. And returns the number of intervals.

 static Standard_Integer Extrema_Curve2dTool::NbKnots ( const Adaptor2d_Curve2d & C )
static
 static Standard_Integer Extrema_Curve2dTool::NbPoles ( const Adaptor2d_Curve2d & C )
static
 static gp_Parab2d Extrema_Curve2dTool::Parabola ( const Adaptor2d_Curve2d & C )
static
 static Standard_Real Extrema_Curve2dTool::Period ( const Adaptor2d_Curve2d & C )
static
 static Standard_Real Extrema_Curve2dTool::Resolution ( const Adaptor2d_Curve2d & C, const Standard_Real R3d )
static

Returns the parametric resolution corresponding to the real space resolution <R3d>.

 static gp_Pnt2d Extrema_Curve2dTool::Value ( const Adaptor2d_Curve2d & C, const Standard_Real U )
static

Computes the point of parameter U on the curve.

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