Public 成员函数
	GCirc ()

	GCirc (GAx2 theA2, double theRadius)

void	SetAxis (GAx1 theA1)

void	SetLocation (GPnt theP)

void	SetPosition (GAx2 theA2)

void	SetRadius (double theRadius)

double	Area ()

GAx1	Axis ()

double	Length ()

GPnt	Location ()

GAx2	Position ()

double	Radius ()

GAx1	XAxis ()

GAx1	YAxis ()

double	Distance (GPnt theP)

double	SquareDistance (GPnt theP)

boolean	Contains (GPnt theP, double theLinearTolerance)

void	Mirror (GPnt theP)

GCirc	Mirrored (GPnt theP)

void	Mirror (GAx1 theA1)

GCirc	Mirrored (GAx1 theA1)

void	Mirror (GAx2 theA2)

GCirc	Mirrored (GAx2 theA2)

void	Rotate (GAx1 theA1, double theAng)

GCirc	Rotated (GAx1 theA1, double theAng)

void	Scale (GPnt theP, double theS)

GCirc	Scaled (GPnt theP, double theS)

void	Transform (GTrsf theT)

GCirc	Transformed (GTrsf theT)

void	Translate (GVec theV)

GCirc	Translated (GVec theV)

void	Translate (GPnt theP1, GPnt theP2)

GCirc	Translated (GPnt theP1, GPnt theP2)

详细描述

Describes a circle in 3D space. A circle is defined by its radius and positioned in space with a coordinate system (a gp_Ax2 object) as follows: - the origin of the coordinate system is the center of the circle, and - the origin, "X Direction" and "Y Direction" of the coordinate system define the plane of the circle. This positioning coordinate system is the "local coordinate system" of the circle. Its "main Direction" gives the normal vector to the plane of the circle. The "main Axis" of the coordinate system is referred to as the "Axis" of the circle. Note: when a gp_Circ circle is converted into a Geom_Circle circle, some implicit properties of the circle are used explicitly: - the "main Direction" of the local coordinate system gives an implicit orientation to the circle (and defines its trigonometric sense), - this orientation corresponds to the direction in which parameter values increase, - the starting point for parameterization is that of the "X Axis" of the local coordinate system (i.e. the "X Axis" of the circle). See Also gce_MakeCirc which provides functions for more complex circle constructions Geom_Circle which provides additional functions for constructing circles and works, in particular, with the parametric equations of circles

构造及析构函数说明

◆ GCirc() [1/2]

GCirc.GCirc ( )

Creates an indefinite circle.

◆ GCirc() [2/2]

GCirc.GCirc	(	GAx2	theA2,
		double	theRadius )

A2 locates the circle and gives its orientation in 3D space. Warnings : It is not forbidden to create a circle with theRadius = 0.0 Raises ConstructionError if theRadius < 0.0

成员函数说明

◆ Area()

double GCirc.Area ( )

Computes the area of the circle.

◆ Axis()

GAx1 GCirc.Axis ( )

Returns the main axis of the circle. It is the axis perpendicular to the plane of the circle, passing through the "Location" point (center) of the circle.

◆ Contains()

boolean GCirc.Contains	(	GPnt	theP,
		double	theLinearTolerance )

Returns True if the point theP is on the circumference. The distance between <me> and <theP> must be lower or equal to theLinearTolerance.

◆ Distance()

double GCirc.Distance ( GPnt theP )

Computes the minimum of distance between the point theP and any point on the circumference of the circle.

◆ Length()

double GCirc.Length ( )

Computes the circumference of the circle.

◆ Location()

GPnt GCirc.Location ( )

Returns the center of the circle. It is the "Location" point of the local coordinate system of the circle

◆ Mirrored() [1/3]

GCirc GCirc.Mirrored ( GAx1 theA1 )

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

◆ Mirrored() [2/3]

GCirc GCirc.Mirrored ( GAx2 theA2 )

Performs the symmetrical transformation of a circle with respect to a plane. The axis placement theA2 locates the plane of the of the symmetry : (Location, XDirection, YDirection).

◆ Mirrored() [3/3]

GCirc GCirc.Mirrored ( GPnt theP )

Performs the symmetrical transformation of a circle with respect to the point theP which is the center of the symmetry.

◆ Position()

GAx2 GCirc.Position ( )

Returns the position of the circle. It is the local coordinate system of the circle.

◆ Radius()

double GCirc.Radius ( )

Returns the radius of this circle.

◆ Rotated()

GCirc GCirc.Rotated	(	GAx1	theA1,
		double	theAng )

Rotates a circle. theA1 is the axis of the rotation. theAng is the angular value of the rotation in radians.

◆ Scaled()

GCirc GCirc.Scaled	(	GPnt	theP,
		double	theS )

Scales a circle. theS is the scaling value. Warnings : If theS is negative the radius stay positive but the "XAxis" and the "YAxis" are reversed as for an ellipse.

◆ SetAxis()

void GCirc.SetAxis ( GAx1 theA1 )

Changes the main axis of the circle. It is the axis perpendicular to the plane of the circle. Raises ConstructionError if the direction of theA1 is parallel to the "XAxis" of the circle.

◆ SetLocation()

void GCirc.SetLocation ( GPnt theP )

Changes the "Location" point (center) of the circle.

◆ SetPosition()

void GCirc.SetPosition ( GAx2 theA2 )

Changes the position of the circle.

◆ SetRadius()

void GCirc.SetRadius ( double theRadius )

Modifies the radius of this circle. Warning. This class does not prevent the creation of a circle where theRadius is null. Exceptions Standard_ConstructionError if theRadius is negative.

◆ SquareDistance()

double GCirc.SquareDistance ( GPnt theP )

Computes the square distance between <me> and the point theP.

◆ Transformed()

GCirc GCirc.Transformed ( GTrsf theT )

Transforms a circle with the transformation theT from class Trsf.

◆ Translated() [1/2]

GCirc GCirc.Translated	(	GPnt	theP1,
		GPnt	theP2 )

Translates a circle from the point theP1 to the point theP2.

◆ Translated() [2/2]

GCirc GCirc.Translated ( GVec theV )

Translates a circle in the direction of the vector theV. The magnitude of the translation is the vector's magnitude.

◆ XAxis()

GAx1 GCirc.XAxis ( )

Returns the "XAxis" of the circle. This axis is perpendicular to the axis of the conic. This axis and the "Yaxis" define the plane of the conic.

◆ YAxis()

GAx1 GCirc.YAxis ( )

Returns the "YAxis" of the circle. This axis and the "Xaxis" define the plane of the conic. The "YAxis" is perpendicular to the "Xaxis".

Public 成员函数