Open CASCADE Technology
6.5.4
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This class implements the following algorithms used to
create Hyperbola from gp.
More...
#include <gce_MakeHypr.hxx>
Public Member Functions | |
DEFINE_STANDARD_ALLOC | gce_MakeHypr (const gp_Ax2 &A2, const Standard_Real MajorRadius, const Standard_Real MinorRadius) |
A2 is the local coordinate system of the hyperbola. In the local coordinates system A2 the equation of the hyperbola is : X*X / MajorRadius*MajorRadius - Y*Y / MinorRadius*MinorRadius = 1.0 It is not forbidden to create an Hyperbola with MajorRadius = MinorRadius. For the hyperbola the MajorRadius can be lower than the MinorRadius. The status is "NegativeRadius" if MajorRadius < 0.0 and "InvertRadius" if MinorRadius > MajorRadius. | |
gce_MakeHypr (const gp_Pnt &S1, const gp_Pnt &S2, const gp_Pnt &Center) | |
Constructs a hyperbola | |
const gp_Hypr & | Value () const |
Returns the constructed hyperbola. Exceptions StdFail_NotDone if no hyperbola is constructed. | |
const gp_Hypr & | Operator () const |
operator gp_Hypr () const |
* Create an Hyperbola from its center, and two points: <br> one on its axis of symmetry giving the major radius, the <br> other giving the value of the small radius. <br> The three points give the plane of the hyperbola. <br> * Create an hyperbola from its axisplacement and its <br> MajorRadius and its MinorRadius. <br>
^YAxis
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FirstConjugateBranch
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Other | Main
--------------------- C ------------------------------>XAxis
Branch | Branch
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SecondConjugateBranch
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The local cartesian coordinate system of the ellipse is an
axis placement (two axis).
The "XDirection" and the "YDirection" of the axis placement
define the plane of the hyperbola.
The "Direction" of the axis placement defines the normal axis
to the hyperbola's plane.
The "XAxis" of the hyperbola ("Location", "XDirection") is the
major axis and the "YAxis" of the hyperbola ("Location",
"YDirection") is the minor axis.
Warnings :
The major radius (on the major axis) can be lower than the
minor radius (on the minor axis).
DEFINE_STANDARD_ALLOC gce_MakeHypr::gce_MakeHypr | ( | const gp_Ax2 & | A2, |
const Standard_Real | MajorRadius, | ||
const Standard_Real | MinorRadius | ||
) |
the plane of the hyperbola is defined by Center, S1 and S2,
its minor radius is the distance between S2 and the major axis.
Warning
If an error occurs (that is, when IsDone returns
false), the Status function returns:
const gp_Hypr& gce_MakeHypr::Operator | ( | ) | const |
gce_MakeHypr::operator gp_Hypr | ( | ) | const |
const gp_Hypr& gce_MakeHypr::Value | ( | ) | const |