gp_Hypr Class Reference

Describes a branch of a hyperbola in 3D space. A hyperbola is defined by its major and minor radii and positioned in space with a coordinate system (a gp_Ax2 object) of which: More...

#include <gp_Hypr.hxx>

Public Member Functions
	gp_Hypr ()
	Creates of an indefinite hyperbola. More...
	gp_Hypr (const gp_Ax2 &A2, const Standard_Real MajorRadius, const Standard_Real MinorRadius)
	Creates a hyperbola with radii MajorRadius and MinorRadius, positioned in the space by the coordinate system A2 such that: More...
void	SetAxis (const gp_Ax1 &A1)
	Modifies this hyperbola, by redefining its local coordinate system so that: More...
void	SetLocation (const gp_Pnt &P)
	Modifies this hyperbola, by redefining its local coordinate system so that its origin becomes P. More...
void	SetMajorRadius (const Standard_Real MajorRadius)
	Modifies the major radius of this hyperbola. Exceptions Standard_ConstructionError if MajorRadius is negative. More...
void	SetMinorRadius (const Standard_Real MinorRadius)
	Modifies the minor radius of this hyperbola. Exceptions Standard_ConstructionError if MinorRadius is negative. More...
void	SetPosition (const gp_Ax2 &A2)
	Modifies this hyperbola, by redefining its local coordinate system so that it becomes A2. More...
gp_Ax1	Asymptote1 () const
	In the local coordinate system of the hyperbola the equation of the hyperbola is (X*X)/(A*A) - (Y*Y)/(B*B) = 1.0 and the equation of the first asymptote is Y = (B/A)*X where A is the major radius and B is the minor radius. Raises ConstructionError if MajorRadius = 0.0. More...
gp_Ax1	Asymptote2 () const
	In the local coordinate system of the hyperbola the equation of the hyperbola is (X*X)/(A*A) - (Y*Y)/(B*B) = 1.0 and the equation of the first asymptote is Y = -(B/A)*X. where A is the major radius and B is the minor radius. Raises ConstructionError if MajorRadius = 0.0. More...
const gp_Ax1 &	Axis () const
	Returns the axis passing through the center, and normal to the plane of this hyperbola. More...
gp_Hypr	ConjugateBranch1 () const
	Computes the branch of hyperbola which is on the positive side of the "YAxis" of <me>. More...
gp_Hypr	ConjugateBranch2 () const
	Computes the branch of hyperbola which is on the negative side of the "YAxis" of <me>. More...
gp_Ax1	Directrix1 () const
	This directrix is the line normal to the XAxis of the hyperbola in the local plane (Z = 0) at a distance d = MajorRadius / e from the center of the hyperbola, where e is the eccentricity of the hyperbola. This line is parallel to the "YAxis". The intersection point between the directrix1 and the "XAxis" is the "Location" point of the directrix1. This point is on the positive side of the "XAxis". More...
gp_Ax1	Directrix2 () const
	This line is obtained by the symmetrical transformation of "Directrix1" with respect to the "YAxis" of the hyperbola. More...
Standard_Real	Eccentricity () const
	Returns the excentricity of the hyperbola (e > 1). If f is the distance between the location of the hyperbola and the Focus1 then the eccentricity e = f / MajorRadius. Raises DomainError if MajorRadius = 0.0. More...
Standard_Real	Focal () const
	Computes the focal distance. It is the distance between the the two focus of the hyperbola. More...
gp_Pnt	Focus1 () const
	Returns the first focus of the hyperbola. This focus is on the positive side of the "XAxis" of the hyperbola. More...
gp_Pnt	Focus2 () const
	Returns the second focus of the hyperbola. This focus is on the negative side of the "XAxis" of the hyperbola. More...
const gp_Pnt &	Location () const
	Returns the location point of the hyperbola. It is the intersection point between the "XAxis" and the "YAxis". More...
Standard_Real	MajorRadius () const
	Returns the major radius of the hyperbola. It is the radius on the "XAxis" of the hyperbola. More...
Standard_Real	MinorRadius () const
	Returns the minor radius of the hyperbola. It is the radius on the "YAxis" of the hyperbola. More...
gp_Hypr	OtherBranch () const
	Returns the branch of hyperbola obtained by doing the symmetrical transformation of <me> with respect to the "YAxis" of <me>. More...
Standard_Real	Parameter () const
	Returns p = (e * e - 1) * MajorRadius where e is the eccentricity of the hyperbola. Raises DomainError if MajorRadius = 0.0. More...
const gp_Ax2 &	Position () const
	Returns the coordinate system of the hyperbola. More...
gp_Ax1	XAxis () const
	Computes an axis, whose. More...
gp_Ax1	YAxis () const
	Computes an axis, whose. More...
void	Mirror (const gp_Pnt &P)
gp_Hypr	Mirrored (const gp_Pnt &P) const
	Performs the symmetrical transformation of an hyperbola with respect to the point P which is the center of the symmetry. More...
void	Mirror (const gp_Ax1 &A1)
gp_Hypr	Mirrored (const gp_Ax1 &A1) const
	Performs the symmetrical transformation of an hyperbola with respect to an axis placement which is the axis of the symmetry. More...
void	Mirror (const gp_Ax2 &A2)
gp_Hypr	Mirrored (const gp_Ax2 &A2) const
	Performs the symmetrical transformation of an hyperbola with respect to a plane. The axis placement A2 locates the plane of the symmetry (Location, XDirection, YDirection). More...
void	Rotate (const gp_Ax1 &A1, const Standard_Real Ang)
gp_Hypr	Rotated (const gp_Ax1 &A1, const Standard_Real Ang) const
	Rotates an hyperbola. A1 is the axis of the rotation. Ang is the angular value of the rotation in radians. More...
void	Scale (const gp_Pnt &P, const Standard_Real S)
gp_Hypr	Scaled (const gp_Pnt &P, const Standard_Real S) const
	Scales an hyperbola. S is the scaling value. More...
void	Transform (const gp_Trsf &T)
gp_Hypr	Transformed (const gp_Trsf &T) const
	Transforms an hyperbola with the transformation T from class Trsf. More...
void	Translate (const gp_Vec &V)
gp_Hypr	Translated (const gp_Vec &V) const
	Translates an hyperbola in the direction of the vector V. The magnitude of the translation is the vector's magnitude. More...
void	Translate (const gp_Pnt &P1, const gp_Pnt &P2)
gp_Hypr	Translated (const gp_Pnt &P1, const gp_Pnt &P2) const
	Translates an hyperbola from the point P1 to the point P2. More...

Detailed Description

Describes a branch of a hyperbola in 3D space. A hyperbola is defined by its major and minor radii and positioned in space with a coordinate system (a gp_Ax2 object) of which:

• the origin is the center of the hyperbola,
• the "X Direction" defines the major axis of the hyperbola, and
• the "Y Direction" defines the minor axis of the hyperbola. The origin, "X Direction" and "Y Direction" of this coordinate system together define the plane of the hyperbola. This coordinate system is the "local coordinate system" of the hyperbola. In this coordinate system, the equation of the hyperbola is: X*X/(MajorRadius**2)-Y*Y/(MinorRadius**2) = 1.0 The branch of the hyperbola described is the one located on the positive side of the major axis. The "main Direction" of the local coordinate system is a normal vector to the plane of the hyperbola. This vector gives an implicit orientation to the hyperbola. We refer to the "main Axis" of the local coordinate system as the "Axis" of the hyperbola. The following schema shows the plane of the hyperbola, and in it, the respective positions of the three branches of hyperbolas constructed with the functions OtherBranch, ConjugateBranch1, and ConjugateBranch2:

^YAxis | FirstConjugateBranch | Other | Main ------------------— C ---------------------------—>XAxis Branch | Branch | | SecondConjugateBranch | ^YAxis Warning The major radius can be less than the minor radius. See Also gce_MakeHypr which provides functions for more complex hyperbola constructions Geom_Hyperbola which provides additional functions for constructing hyperbolas and works, in particular, with the parametric equations of hyperbolas

Constructor & Destructor Documentation

gp_Hypr() [1/2]

gp_Hypr::gp_Hypr

(

)

Creates of an indefinite hyperbola.

gp_Hypr() [2/2]

gp_Hypr::gp_Hypr	(	const gp_Ax2 &	A2,
		const Standard_Real	MajorRadius,
		const Standard_Real	MinorRadius
	)

Creates a hyperbola with radii MajorRadius and MinorRadius, positioned in the space by the coordinate system A2 such that:

• the origin of A2 is the center of the hyperbola,
• the "X Direction" of A2 defines the major axis of the hyperbola, that is, the major radius MajorRadius is measured along this axis, and
• the "Y Direction" of A2 defines the minor axis of the hyperbola, that is, the minor radius MinorRadius is measured along this axis. Note: This class does not prevent the creation of a hyperbola where:
• MajorAxis is equal to MinorAxis, or
• MajorAxis is less than MinorAxis. Exceptions Standard_ConstructionError if MajorAxis or MinorAxis is negative. Raises ConstructionError if MajorRadius < 0.0 or MinorRadius < 0.0 Raised if MajorRadius < 0.0 or MinorRadius < 0.0

Member Function Documentation

Asymptote1()

gp_Ax1 gp_Hypr::Asymptote1

(

)

const

In the local coordinate system of the hyperbola the equation of the hyperbola is (X*X)/(A*A) - (Y*Y)/(B*B) = 1.0 and the equation of the first asymptote is Y = (B/A)*X where A is the major radius and B is the minor radius. Raises ConstructionError if MajorRadius = 0.0.

Asymptote2()

gp_Ax1 gp_Hypr::Asymptote2

(

)

const

In the local coordinate system of the hyperbola the equation of the hyperbola is (X*X)/(A*A) - (Y*Y)/(B*B) = 1.0 and the equation of the first asymptote is Y = -(B/A)*X. where A is the major radius and B is the minor radius. Raises ConstructionError if MajorRadius = 0.0.

Axis()

const gp_Ax1& gp_Hypr::Axis

(

)

const

Returns the axis passing through the center, and normal to the plane of this hyperbola.

ConjugateBranch1()

gp_Hypr gp_Hypr::ConjugateBranch1

(

)

const

Computes the branch of hyperbola which is on the positive side of the "YAxis" of <me>.

ConjugateBranch2()

gp_Hypr gp_Hypr::ConjugateBranch2

(

)

const

Computes the branch of hyperbola which is on the negative side of the "YAxis" of <me>.

Directrix1()

gp_Ax1 gp_Hypr::Directrix1

(

)

const

This directrix is the line normal to the XAxis of the hyperbola in the local plane (Z = 0) at a distance d = MajorRadius / e from the center of the hyperbola, where e is the eccentricity of the hyperbola. This line is parallel to the "YAxis". The intersection point between the directrix1 and the "XAxis" is the "Location" point of the directrix1. This point is on the positive side of the "XAxis".

Directrix2()

gp_Ax1 gp_Hypr::Directrix2

(

)

const

This line is obtained by the symmetrical transformation of "Directrix1" with respect to the "YAxis" of the hyperbola.

Eccentricity()

Standard_Real gp_Hypr::Eccentricity

(

)

const

Returns the excentricity of the hyperbola (e > 1). If f is the distance between the location of the hyperbola and the Focus1 then the eccentricity e = f / MajorRadius. Raises DomainError if MajorRadius = 0.0.

Focal()

Standard_Real gp_Hypr::Focal

(

)

const

Computes the focal distance. It is the distance between the the two focus of the hyperbola.

Focus1()

gp_Pnt gp_Hypr::Focus1

(

)

const

Returns the first focus of the hyperbola. This focus is on the positive side of the "XAxis" of the hyperbola.

Focus2()

gp_Pnt gp_Hypr::Focus2

(

)

const

Returns the second focus of the hyperbola. This focus is on the negative side of the "XAxis" of the hyperbola.

Location()

const gp_Pnt& gp_Hypr::Location

(

)

const

Returns the location point of the hyperbola. It is the intersection point between the "XAxis" and the "YAxis".

MajorRadius()

Standard_Real gp_Hypr::MajorRadius

(

)

const

Returns the major radius of the hyperbola. It is the radius on the "XAxis" of the hyperbola.

MinorRadius()

Standard_Real gp_Hypr::MinorRadius

(

)

const

Returns the minor radius of the hyperbola. It is the radius on the "YAxis" of the hyperbola.

Mirror() [1/3]

void gp_Hypr::Mirror

(

const gp_Pnt &

P

)

Mirror() [2/3]

void gp_Hypr::Mirror

(

const gp_Ax1 &

A1

)

Mirror() [3/3]

void gp_Hypr::Mirror

(

const gp_Ax2 &

A2

)

Mirrored() [1/3]

gp_Hypr gp_Hypr::Mirrored

(

const gp_Pnt &

P

)

const

Performs the symmetrical transformation of an hyperbola with respect to the point P which is the center of the symmetry.

Mirrored() [2/3]

gp_Hypr gp_Hypr::Mirrored

(

const gp_Ax1 &

A1

)

const

Performs the symmetrical transformation of an hyperbola with respect to an axis placement which is the axis of the symmetry.

Mirrored() [3/3]

gp_Hypr gp_Hypr::Mirrored

(

const gp_Ax2 &

A2

)

const

Performs the symmetrical transformation of an hyperbola with respect to a plane. The axis placement A2 locates the plane of the symmetry (Location, XDirection, YDirection).

OtherBranch()

gp_Hypr gp_Hypr::OtherBranch

(

)

const

Returns the branch of hyperbola obtained by doing the symmetrical transformation of <me> with respect to the "YAxis" of <me>.

Parameter()

Standard_Real gp_Hypr::Parameter

(

)

const

Returns p = (e * e - 1) * MajorRadius where e is the eccentricity of the hyperbola. Raises DomainError if MajorRadius = 0.0.

Position()

const gp_Ax2& gp_Hypr::Position

(

)

const

Returns the coordinate system of the hyperbola.

Rotate()

void gp_Hypr::Rotate	(	const gp_Ax1 &	A1,
		const Standard_Real	Ang
	)

Rotated()

gp_Hypr gp_Hypr::Rotated	(	const gp_Ax1 &	A1,
		const Standard_Real	Ang
	)		const

Rotates an hyperbola. A1 is the axis of the rotation. Ang is the angular value of the rotation in radians.

Scale()

void gp_Hypr::Scale	(	const gp_Pnt &	P,
		const Standard_Real	S
	)

Scaled()

gp_Hypr gp_Hypr::Scaled	(	const gp_Pnt &	P,
		const Standard_Real	S
	)		const

Scales an hyperbola. S is the scaling value.

SetAxis()

void gp_Hypr::SetAxis

(

const gp_Ax1 &

A1

)

Modifies this hyperbola, by redefining its local coordinate system so that:

• its origin and "main Direction" become those of the axis A1 (the "X Direction" and "Y Direction" are then recomputed in the same way as for any gp_Ax2). Raises ConstructionError if the direction of A1 is parallel to the direction of the "XAxis" of the hyperbola.

SetLocation()

void gp_Hypr::SetLocation

(

const gp_Pnt &

P

)

Modifies this hyperbola, by redefining its local coordinate system so that its origin becomes P.

SetMajorRadius()

void gp_Hypr::SetMajorRadius

(

const Standard_Real

MajorRadius

)

Modifies the major radius of this hyperbola. Exceptions Standard_ConstructionError if MajorRadius is negative.

SetMinorRadius()

void gp_Hypr::SetMinorRadius

(

const Standard_Real

MinorRadius

)

Modifies the minor radius of this hyperbola. Exceptions Standard_ConstructionError if MinorRadius is negative.

SetPosition()

void gp_Hypr::SetPosition

(

const gp_Ax2 &

A2

)

Modifies this hyperbola, by redefining its local coordinate system so that it becomes A2.

Transform()

void gp_Hypr::Transform

(

const gp_Trsf &

T

)

Transformed()

gp_Hypr gp_Hypr::Transformed

(

const gp_Trsf &

T

)

const

Transforms an hyperbola with the transformation T from class Trsf.

Translate() [1/2]

void gp_Hypr::Translate

(

const gp_Vec &

V

)

Translate() [2/2]

void gp_Hypr::Translate	(	const gp_Pnt &	P1,
		const gp_Pnt &	P2
	)

Translated() [1/2]

gp_Hypr gp_Hypr::Translated

(

const gp_Vec &

V

)

const

Translates an hyperbola in the direction of the vector V. The magnitude of the translation is the vector's magnitude.

Translated() [2/2]

gp_Hypr gp_Hypr::Translated	(	const gp_Pnt &	P1,
		const gp_Pnt &	P2
	)		const

Translates an hyperbola from the point P1 to the point P2.

XAxis()

gp_Ax1 gp_Hypr::XAxis

(

)

const

Computes an axis, whose.

• the origin is the center of this hyperbola, and
• the unit vector is the "X Direction" of the local coordinate system of this hyperbola. These axes are, the major axis (the "X Axis") and of this hyperboReturns the "XAxis" of the hyperbola.

YAxis()

gp_Ax1 gp_Hypr::YAxis

(

)

const

Computes an axis, whose.

• the origin is the center of this hyperbola, and
• the unit vector is the "Y Direction" of the local coordinate system of this hyperbola. These axes are the minor axis (the "Y Axis") of this hyperbola

---

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

• gp_Hypr.hxx