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// This file is generated by WOK (CPPExt).
// Please do not edit this file; modify original file instead.
// The copyright and license terms as defined for the original file apply to
// this header file considered to be the "object code" form of the original source.
#ifndef _IGESGeom_ConicArc_HeaderFile
#define _IGESGeom_ConicArc_HeaderFile
#include <Standard.hxx>
#include <Standard_DefineHandle.hxx>
#include <Handle_IGESGeom_ConicArc.hxx>
#include <Standard_Real.hxx>
#include <gp_XY.hxx>
#include <IGESData_IGESEntity.hxx>
#include <Standard_Boolean.hxx>
#include <Standard_Integer.hxx>
class gp_XY;
class gp_Pnt2d;
class gp_Pnt;
class gp_Dir;
//! defines IGESConicArc, Type <104> Form <0-3> in package IGESGeom
//! A conic arc is a bounded connected portion of a parent
//! conic curve which consists of more than one point. The
//! parent conic curve is either an ellipse, a parabola, or
//! a hyperbola. The definition space coordinate system is
//! always chosen so that the conic arc lies in a plane either
//! coincident with or parallel to XT, YT plane. Within such
//! a plane a conic is defined by the six coefficients in the
//! following equation.
//! A*XT^2 + B*XT*YT + C*YT^2 + D*XT + E*YT + F = 0
class IGESGeom_ConicArc : public IGESData_IGESEntity
{
public:
Standard_EXPORT IGESGeom_ConicArc();
//! This method is used to set the fields of the class
//! ConicalArc
//! - A, B, C, D, E, F : Coefficients of the equation
//! defining conic arc
//! - ZT : Parallel ZT displacement of the arc
//! from XT, YT plane.
//! - aStart : Starting point of the conic arc
//! - anEnd : End point of the conic arc
Standard_EXPORT void Init (const Standard_Real A, const Standard_Real B, const Standard_Real C, const Standard_Real D, const Standard_Real E, const Standard_Real F, const Standard_Real ZT, const gp_XY& aStart, const gp_XY& anEnd) ;
//! sets the Form Number equal to ComputedFormNumber,
//! returns True if changed
Standard_EXPORT Standard_Boolean OwnCorrect() ;
//! Computes the Form Number according to the equation
//! 1 for Ellipse, 2 for Hyperbola, 3 for Parabola
Standard_EXPORT Standard_Integer ComputedFormNumber() const;
Standard_EXPORT void Equation (Standard_Real& A, Standard_Real& B, Standard_Real& C, Standard_Real& D, Standard_Real& E, Standard_Real& F) const;
//! returns the Z displacement of the arc from XT, YT plane
Standard_EXPORT Standard_Real ZPlane() const;
//! returns the starting point of the arc
Standard_EXPORT gp_Pnt2d StartPoint() const;
//! returns the starting point of the arc after applying
//! Transf. Matrix
Standard_EXPORT gp_Pnt TransformedStartPoint() const;
//! returns the end point of the arc
Standard_EXPORT gp_Pnt2d EndPoint() const;
//! returns the end point of the arc after applying
//! Transf. Matrix
Standard_EXPORT gp_Pnt TransformedEndPoint() const;
//! returns True if parent conic curve is an ellipse
Standard_EXPORT Standard_Boolean IsFromEllipse() const;
//! returns True if parent conic curve is a parabola
Standard_EXPORT Standard_Boolean IsFromParabola() const;
//! returns True if parent conic curve is a hyperbola
Standard_EXPORT Standard_Boolean IsFromHyperbola() const;
//! returns True if StartPoint = EndPoint
Standard_EXPORT Standard_Boolean IsClosed() const;
//! Z-Axis of conic (i.e. [0,0,1])
Standard_EXPORT gp_Dir Axis() const;
//! Z-Axis after applying Trans. Matrix
Standard_EXPORT gp_Dir TransformedAxis() const;
//! Returns a Definition computed from equation, easier to use
//! <Center> : the center of the the conic (meaningless for
//! a parabola) (defined with Z displacement)
//! <MainAxis> : the Main Axis of the conic (for a Circle,
//! arbitrary the X Axis)
//! <Rmin,Rmax> : Minor and Major Radii of the conic
//! For a Circle, Rmin = Rmax,
//! For a Parabola, Rmin = Rmax = the Focal
//! Warning : the basic definition (by equation) is not very stable,
//! limit cases may be approximative
Standard_EXPORT void Definition (gp_Pnt& Center, gp_Dir& MainAxis, Standard_Real& rmin, Standard_Real& rmax) const;
//! Same as Definition, but the Location is applied on the
//! Center and the MainAxis
Standard_EXPORT void TransformedDefinition (gp_Pnt& Center, gp_Dir& MainAxis, Standard_Real& rmin, Standard_Real& rmax) const;
//! Computes and returns the coordinates of the definition of
//! a comic from its equation. Used by Definition &
//! TransformedDefinition, or may be called directly if needed
Standard_EXPORT void ComputedDefinition (Standard_Real& Xcen, Standard_Real& Ycen, Standard_Real& Xax, Standard_Real& Yax, Standard_Real& Rmin, Standard_Real& Rmax) const;
DEFINE_STANDARD_RTTI(IGESGeom_ConicArc)
protected:
private:
Standard_Real theA;
Standard_Real theB;
Standard_Real theC;
Standard_Real theD;
Standard_Real theE;
Standard_Real theF;
Standard_Real theZT;
gp_XY theStart;
gp_XY theEnd;
};
#endif // _IGESGeom_ConicArc_HeaderFile
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