Open CASCADE Technology
7.2.0

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: More...
#include <gp_Circ.hxx>
Public Member Functions  
gp_Circ ()  
Creates an indefinite circle. More...  
gp_Circ (const gp_Ax2 &A2, const Standard_Real Radius)  
A2 locates the circle and gives its orientation in 3D space. Warnings : It is not forbidden to create a circle with Radius = 0.0 Raises ConstructionError if Radius < 0.0. More...  
void  SetAxis (const gp_Ax1 &A1) 
Changes the main axis of the circle. It is the axis perpendicular to the plane of the circle. Raises ConstructionError if the direction of A1 is parallel to the "XAxis" of the circle. More...  
void  SetLocation (const gp_Pnt &P) 
Changes the "Location" point (center) of the circle. More...  
void  SetPosition (const gp_Ax2 &A2) 
Changes the position of the circle. More...  
void  SetRadius (const Standard_Real Radius) 
Modifies the radius of this circle. Warning. This class does not prevent the creation of a circle where Radius is null. Exceptions Standard_ConstructionError if Radius is negative. More...  
Standard_Real  Area () const 
Computes the area of the circle. More...  
const gp_Ax1 &  Axis () const 
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. More...  
Standard_Real  Length () const 
Computes the circumference of the circle. More...  
const gp_Pnt &  Location () const 
Returns the center of the circle. It is the "Location" point of the local coordinate system of the circle. More...  
const gp_Ax2 &  Position () const 
Returns the position of the circle. It is the local coordinate system of the circle. More...  
Standard_Real  Radius () const 
Returns the radius of this circle. More...  
gp_Ax1  XAxis () const 
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. More...  
gp_Ax1  YAxis () const 
Returns the "YAxis" of the circle. This axis and the "Xaxis" define the plane of the conic. The "YAxis" is perpendicular to the "Xaxis". More...  
Standard_Real  Distance (const gp_Pnt &P) const 
Computes the minimum of distance between the point P and any point on the circumference of the circle. More...  
Standard_Real  SquareDistance (const gp_Pnt &P) const 
Computes the square distance between <me> and the point P. More...  
Standard_Boolean  Contains (const gp_Pnt &P, const Standard_Real LinearTolerance) const 
Returns True if the point P is on the circumference. The distance between <me> and. More...  
void  Mirror (const gp_Pnt &P) 
gp_Circ  Mirrored (const gp_Pnt &P) const 
Performs the symmetrical transformation of a circle with respect to the point P which is the center of the symmetry. More...  
void  Mirror (const gp_Ax1 &A1) 
gp_Circ  Mirrored (const gp_Ax1 &A1) const 
Performs the symmetrical transformation of a circle with respect to an axis placement which is the axis of the symmetry. More...  
void  Mirror (const gp_Ax2 &A2) 
gp_Circ  Mirrored (const gp_Ax2 &A2) const 
Performs the symmetrical transformation of a circle with respect to a plane. The axis placement A2 locates the plane of the of the symmetry : (Location, XDirection, YDirection). More...  
void  Rotate (const gp_Ax1 &A1, const Standard_Real Ang) 
gp_Circ  Rotated (const gp_Ax1 &A1, const Standard_Real Ang) const 
Rotates a circle. 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_Circ  Scaled (const gp_Pnt &P, const Standard_Real S) const 
Scales a circle. S is the scaling value. Warnings : If S is negative the radius stay positive but the "XAxis" and the "YAxis" are reversed as for an ellipse. More...  
void  Transform (const gp_Trsf &T) 
gp_Circ  Transformed (const gp_Trsf &T) const 
Transforms a circle with the transformation T from class Trsf. More...  
void  Translate (const gp_Vec &V) 
gp_Circ  Translated (const gp_Vec &V) const 
Translates a circle 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_Circ  Translated (const gp_Pnt &P1, const gp_Pnt &P2) const 
Translates a circle from the point P1 to the point P2. More...  
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:
gp_Circ::gp_Circ  (  ) 
Creates an indefinite circle.
gp_Circ::gp_Circ  (  const gp_Ax2 &  A2, 
const Standard_Real  Radius  
) 
A2 locates the circle and gives its orientation in 3D space. Warnings : It is not forbidden to create a circle with Radius = 0.0 Raises ConstructionError if Radius < 0.0.
Standard_Real gp_Circ::Area  (  )  const 
Computes the area of the circle.
const gp_Ax1& gp_Circ::Axis  (  )  const 
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.
Standard_Boolean gp_Circ::Contains  (  const gp_Pnt &  P, 
const Standard_Real  LinearTolerance  
)  const 
Returns True if the point P is on the circumference. The distance between <me> and.
must be lower or equal to LinearTolerance.
Standard_Real gp_Circ::Distance  (  const gp_Pnt &  P  )  const 
Computes the minimum of distance between the point P and any point on the circumference of the circle.
Standard_Real gp_Circ::Length  (  )  const 
Computes the circumference of the circle.
const gp_Pnt& gp_Circ::Location  (  )  const 
Returns the center of the circle. It is the "Location" point of the local coordinate system of the circle.
void gp_Circ::Mirror  (  const gp_Pnt &  P  ) 
void gp_Circ::Mirror  (  const gp_Ax1 &  A1  ) 
void gp_Circ::Mirror  (  const gp_Ax2 &  A2  ) 
Performs the symmetrical transformation of a circle with respect to the point P which is the center of the symmetry.
Performs the symmetrical transformation of a circle with respect to an axis placement which is the axis of the symmetry.
Performs the symmetrical transformation of a circle with respect to a plane. The axis placement A2 locates the plane of the of the symmetry : (Location, XDirection, YDirection).
const gp_Ax2& gp_Circ::Position  (  )  const 
Returns the position of the circle. It is the local coordinate system of the circle.
Standard_Real gp_Circ::Radius  (  )  const 
Returns the radius of this circle.
void gp_Circ::Rotate  (  const gp_Ax1 &  A1, 
const Standard_Real  Ang  
) 
gp_Circ gp_Circ::Rotated  (  const gp_Ax1 &  A1, 
const Standard_Real  Ang  
)  const 
Rotates a circle. A1 is the axis of the rotation. Ang is the angular value of the rotation in radians.
void gp_Circ::Scale  (  const gp_Pnt &  P, 
const Standard_Real  S  
) 
gp_Circ gp_Circ::Scaled  (  const gp_Pnt &  P, 
const Standard_Real  S  
)  const 
Scales a circle. S is the scaling value. Warnings : If S is negative the radius stay positive but the "XAxis" and the "YAxis" are reversed as for an ellipse.
void gp_Circ::SetAxis  (  const gp_Ax1 &  A1  ) 
Changes the main axis of the circle. It is the axis perpendicular to the plane of the circle. Raises ConstructionError if the direction of A1 is parallel to the "XAxis" of the circle.
void gp_Circ::SetLocation  (  const gp_Pnt &  P  ) 
Changes the "Location" point (center) of the circle.
void gp_Circ::SetPosition  (  const gp_Ax2 &  A2  ) 
Changes the position of the circle.
void gp_Circ::SetRadius  (  const Standard_Real  Radius  ) 
Modifies the radius of this circle. Warning. This class does not prevent the creation of a circle where Radius is null. Exceptions Standard_ConstructionError if Radius is negative.
Standard_Real gp_Circ::SquareDistance  (  const gp_Pnt &  P  )  const 
Computes the square distance between <me> and the point P.
void gp_Circ::Transform  (  const gp_Trsf &  T  ) 
Transforms a circle with the transformation T from class Trsf.
void gp_Circ::Translate  (  const gp_Vec &  V  ) 
Translates a circle in the direction of the vector V. The magnitude of the translation is the vector's magnitude.
Translates a circle from the point P1 to the point P2.
gp_Ax1 gp_Circ::XAxis  (  )  const 
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.
gp_Ax1 gp_Circ::YAxis  (  )  const 
Returns the "YAxis" of the circle. This axis and the "Xaxis" define the plane of the conic. The "YAxis" is perpendicular to the "Xaxis".