The abstract class AxisPlacement describes the common behavior of positioning systems in 3D space, such as axis or coordinate systems. The Geom package provides two implementations of 3D positioning systems: More...
#include <Geom_AxisPlacement.hxx>
Inheritance diagram for Geom_AxisPlacement:
Public Member Functions | |
| void | SetAxis (const gp_Ax1 &A1) |
| Assigns A1 as the "main Axis" of this positioning system. This modifies. | |
| virtual void | SetDirection (const gp_Dir &V)=0 |
| Changes the direction of the axis placement. If <me> is an axis placement two axis the main "Direction" is modified and the "XDirection" and "YDirection" are recomputed. Raises ConstructionError only for an axis placement two axis if V and the previous "XDirection" are parallel because it is not possible to calculate the new "XDirection" and the new "YDirection". | |
| void | SetLocation (const gp_Pnt &P) |
| Assigns the point P as the origin of this positioning system. | |
| Standard_Real | Angle (const Handle< Geom_AxisPlacement > &Other) const |
| Computes the angular value, in radians, between the "main Direction" of this positioning system and that of positioning system Other. The result is a value between 0 and Pi. | |
| const gp_Ax1 & | Axis () const |
| Returns the main axis of the axis placement. For an "Axis2placement" it is the main axis (Location, Direction ). For an "Axis1Placement" this method returns a copy of <me>. | |
| gp_Dir | Direction () const |
| Returns the main "Direction" of an axis placement. | |
| gp_Pnt | Location () const |
| Returns the Location point (origin) of the axis placement. | |
 Public Member Functions inherited from Geom_Geometry | |
| void | Mirror (const gp_Pnt &P) |
| Performs the symmetrical transformation of a Geometry with respect to the point P which is the center of the symmetry. | |
| void | Mirror (const gp_Ax1 &A1) |
| Performs the symmetrical transformation of a Geometry with respect to an axis placement which is the axis of the symmetry. | |
| void | Mirror (const gp_Ax2 &A2) |
| Performs the symmetrical transformation of a Geometry with respect to a plane. The axis placement A2 locates the plane of the symmetry : (Location, XDirection, YDirection). | |
| void | Rotate (const gp_Ax1 &A1, const Standard_Real Ang) |
| Rotates a Geometry. A1 is the axis of the rotation. Ang is the angular value of the rotation in radians. | |
| void | Scale (const gp_Pnt &P, const Standard_Real S) |
| Scales a Geometry. S is the scaling value. | |
| void | Translate (const gp_Vec &V) |
| Translates a Geometry. V is the vector of the translation. | |
| void | Translate (const gp_Pnt &P1, const gp_Pnt &P2) |
| Translates a Geometry from the point P1 to the point P2. | |
| virtual void | Transform (const gp_Trsf &T)=0 |
| Transformation of a geometric object. This tansformation can be a translation, a rotation, a symmetry, a scaling or a complex transformation obtained by combination of the previous elementaries transformations. (see class Transformation of the package Geom). | |
| Handle< Geom_Geometry > | Mirrored (const gp_Pnt &P) const |
| Handle< Geom_Geometry > | Mirrored (const gp_Ax1 &A1) const |
| Handle< Geom_Geometry > | Mirrored (const gp_Ax2 &A2) const |
| Handle< Geom_Geometry > | Rotated (const gp_Ax1 &A1, const Standard_Real Ang) const |
| Handle< Geom_Geometry > | Scaled (const gp_Pnt &P, const Standard_Real S) const |
| Handle< Geom_Geometry > | Transformed (const gp_Trsf &T) const |
| Handle< Geom_Geometry > | Translated (const gp_Vec &V) const |
| Handle< Geom_Geometry > | Translated (const gp_Pnt &P1, const gp_Pnt &P2) const |
| virtual Handle< Geom_Geometry > | Copy () const =0 |
| Creates a new object which is a copy of this geometric object. | |
| virtual void | DumpJson (Standard_OStream &theOStream, Standard_Integer theDepth=-1) const |
| Dumps the content of me into the stream. | |
| Public Member Functions inherited from Standard_Transient | |
| Standard_Transient () | |
| Empty constructor. | |
| Standard_Transient (const Standard_Transient &) | |
| Copy constructor – does nothing. | |
| Standard_Transient & | operator= (const Standard_Transient &) |
| Assignment operator, needed to avoid copying reference counter. | |
| virtual | ~Standard_Transient () |
| Destructor must be virtual. | |
| virtual const opencascade::handle< Standard_Type > & | DynamicType () const |
| Returns a type descriptor about this object. | |
| Standard_Boolean | IsInstance (const opencascade::handle< Standard_Type > &theType) const |
| Returns a true value if this is an instance of Type. | |
| Standard_Boolean | IsInstance (const Standard_CString theTypeName) const |
| Returns a true value if this is an instance of TypeName. | |
| Standard_Boolean | IsKind (const opencascade::handle< Standard_Type > &theType) const |
| Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism. | |
| Standard_Boolean | IsKind (const Standard_CString theTypeName) const |
| Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism. | |
| Standard_Transient * | This () const |
| Returns non-const pointer to this object (like const_cast). For protection against creating handle to objects allocated in stack or call from constructor, it will raise exception Standard_ProgramError if reference counter is zero. | |
| Standard_Integer | GetRefCount () const noexcept |
| Get the reference counter of this object. | |
| void | IncrementRefCounter () noexcept |
| Increments the reference counter of this object. | |
| Standard_Integer | DecrementRefCounter () noexcept |
| Decrements the reference counter of this object; returns the decremented value. | |
| virtual void | Delete () const |
| Memory deallocator for transient classes. | |
Protected Attributes | |
| gp_Ax1 | axis |
Additional Inherited Members | |
| Public Types inherited from Standard_Transient | |
| typedef void | base_type |
| Returns a type descriptor about this object. | |
| Static Public Member Functions inherited from Standard_Transient | |
| static constexpr const char * | get_type_name () |
| Returns a type descriptor about this object. | |
| static const opencascade::handle< Standard_Type > & | get_type_descriptor () |
| Returns type descriptor of Standard_Transient class. | |
Detailed Description
The abstract class AxisPlacement describes the common behavior of positioning systems in 3D space, such as axis or coordinate systems. The Geom package provides two implementations of 3D positioning systems:
- the axis (Geom_Axis1Placement class), which is defined by:
- its origin, also termed the "Location point" of the axis,
- its unit vector, termed the "Direction" or "main Direction" of the axis;
- the right-handed coordinate system (Geom_Axis2Placement class), which is defined by:
- its origin, also termed the "Location point" of the coordinate system,
- three orthogonal unit vectors, termed respectively the "X Direction", the "Y Direction" and the "Direction" of the coordinate system. As the coordinate system is right-handed, these unit vectors have the following relation: "Direction" = "X Direction" ^ "Y Direction". The "Direction" is also called the "main Direction" because, when the unit vector is modified, the "X Direction" and "Y Direction" are recomputed, whereas when the "X Direction" or "Y Direction" is modified, the "main Direction" does not change. The axis whose origin is the origin of the positioning system and whose unit vector is its "main Direction" is also called the "Axis" or "main Axis" of the positioning system.
Member Function Documentation
◆ Angle()
| Standard_Real Geom_AxisPlacement::Angle | ( | const Handle< Geom_AxisPlacement > & | Other | ) | const |
Computes the angular value, in radians, between the "main Direction" of this positioning system and that of positioning system Other. The result is a value between 0 and Pi.
◆ Axis()
Returns the main axis of the axis placement. For an "Axis2placement" it is the main axis (Location, Direction ). For an "Axis1Placement" this method returns a copy of <me>.
◆ Direction()
| gp_Dir Geom_AxisPlacement::Direction | ( | ) | const |
Returns the main "Direction" of an axis placement.
◆ Location()
| gp_Pnt Geom_AxisPlacement::Location | ( | ) | const |
Returns the Location point (origin) of the axis placement.
◆ SetAxis()
Assigns A1 as the "main Axis" of this positioning system. This modifies.
- its origin, and
- its "main Direction". If this positioning system is a Geom_Axis2Placement, then its "X Direction" and "Y Direction" are recomputed. Exceptions For a Geom_Axis2Placement: Standard_ConstructionError if A1 and the previous "X Direction" of the coordinate system are parallel.
◆ SetDirection()
Changes the direction of the axis placement. If <me> is an axis placement two axis the main "Direction" is modified and the "XDirection" and "YDirection" are recomputed. Raises ConstructionError only for an axis placement two axis if V and the previous "XDirection" are parallel because it is not possible to calculate the new "XDirection" and the new "YDirection".
Implemented in Geom_Axis1Placement, and Geom_Axis2Placement.
◆ SetLocation()
Assigns the point P as the origin of this positioning system.
Field Documentation
◆ axis
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protected |
The documentation for this class was generated from the following file:
