AnyCAD Rapid API 2024
Help you to create a better world!

Public 成员函数  
GAx2 ()  
GAx2 (GPnt P, GDir N, GDir Vx)  
GAx2 (GPnt P, GDir V)  
void  SetAxis (GAx1 A1) 
void  SetDirection (GDir V) 
void  SetLocation (GPnt theP) 
void  SetXDirection (GDir theVx) 
void  SetYDirection (GDir theVy) 
double  Angle (GAx2 theOther) 
GAx1  Axis () 
GDir  Direction () 
GPnt  Location () 
GDir  XDirection () 
GDir  YDirection () 
boolean  IsCoplanar (GAx2 Other, double LinearTolerance, double AngularTolerance) 
boolean  IsCoplanar (GAx1 A1, double LinearTolerance, double AngularTolerance) 
void  Mirror (GPnt P) 
GAx2  Mirrored (GPnt P) 
void  Mirror (GAx1 A1) 
GAx2  Mirrored (GAx1 A1) 
void  Mirror (GAx2 A2) 
GAx2  Mirrored (GAx2 A2) 
void  Rotate (GAx1 theA1, double theAng) 
GAx2  Rotated (GAx1 theA1, double theAng) 
void  Scale (GPnt theP, double theS) 
GAx2  Scaled (GPnt theP, double theS) 
void  Transform (GTrsf theT) 
GAx2  Transformed (GTrsf theT) 
void  Translate (GVec theV) 
GAx2  Translated (GVec theV) 
void  Translate (GPnt theP1, GPnt theP2) 
GAx2  Translated (GPnt theP1, GPnt theP2) 
Describes a righthanded coordinate system in 3D space. A coordinate system is defined by:  its origin (also referred to as its "Location point"), and  three orthogonal unit vectors, termed respectively the "X Direction", the "Y Direction" and the "Direction" (also referred to as the "main Direction"). The "Direction" of the coordinate system is called its "main Direction" because whenever this unit vector is modified, the "X Direction" and the "Y Direction" are recomputed. However, when we modify either the "X Direction" or the "Y Direction", "Direction" is not modified. The "main Direction" is also the "Z Direction". Since an Ax2 coordinate system is righthanded, its "main Direction" is always equal to the cross product of its "X Direction" and "Y Direction". (To define a lefthanded coordinate system, use gp_Ax3.) A coordinate system is used:  to describe geometric entities, in particular to position them. The local coordinate system of a geometric entity serves the same purpose as the STEP function "axis placement two axes", or  to define geometric transformations. Note: we refer to the "X Axis", "Y Axis" and "Z Axis", respectively, as to axes having:  the origin of the coordinate system as their origin, and  the unit vectors "X Direction", "Y Direction" and "main Direction", respectively, as their unit vectors. The "Z Axis" is also the "main Axis".
GAx2.GAx2  (  ) 
Creates an object corresponding to the reference coordinate system (OXYZ).
Creates an axis placement with an origin P such that:  N is the Direction, and  the "X Direction" is normal to N, in the plane defined by the vectors (N, Vx): "X Direction" = (N ^ Vx) ^ N, Exception: raises ConstructionError if N and Vx are parallel (same or opposite orientation).
Creates  a coordinate system with an origin P, where V gives the "main Direction" (here, "X Direction" and "Y Direction" are defined automatically).
double GAx2.Angle  (  GAx2  theOther  ) 
Computes the angular value, in radians, between the main direction of <me> and the main direction of <theOther>. Returns the angle between 0 and PI in radians.
GAx1 GAx2.Axis  (  ) 
Returns the main axis of <me>. It is the "Location" point and the main "Direction".
GDir GAx2.Direction  (  ) 
Returns the main direction of <me>.
boolean GAx2.IsCoplanar  (  GAx1  A1, 
double  LinearTolerance,  
double  AngularTolerance ) 
Returns True if . the distance between <me> and the "Location" point of A1 is lower of equal to LinearTolerance and . the main direction of <me> and the direction of A1 are normal. Note: the tolerance criterion for angular equality is given by AngularTolerance.
GPnt GAx2.Location  (  ) 
Returns the "Location" point (origin) of <me>.
void GAx2.Mirror  (  GAx1  A1  ) 
Performs a symmetrical transformation of this coordinate system with respect to:  the axis A1, and assigns the result to this coordinate systeme. Warning This transformation is always performed on the origin. In case of a reflection with respect to a point:  the main direction of the coordinate system is not changed, and  the "X Direction" and the "Y Direction" are simply reversed In case of a reflection with respect to an axis or a plane:  the transformation is applied to the "X Direction" and the "Y Direction", then  the "main Direction" is recomputed as the cross product "X Direction" ^ "Y Direction". This maintains the righthanded property of the coordinate system.
void GAx2.Mirror  (  GAx2  A2  ) 
Performs a symmetrical transformation of this coordinate system with respect to:  the plane defined by the origin, "X Direction" and "Y Direction" of coordinate system A2 and assigns the result to this coordinate systeme. Warning This transformation is always performed on the origin. In case of a reflection with respect to a point:  the main direction of the coordinate system is not changed, and  the "X Direction" and the "Y Direction" are simply reversed In case of a reflection with respect to an axis or a plane:  the transformation is applied to the "X Direction" and the "Y Direction", then  the "main Direction" is recomputed as the cross product "X Direction" ^ "Y Direction". This maintains the righthanded property of the coordinate system.
void GAx2.Mirror  (  GPnt  P  ) 
Performs a symmetrical transformation of this coordinate system with respect to:  the point P, and assigns the result to this coordinate system. Warning This transformation is always performed on the origin. In case of a reflection with respect to a point:  the main direction of the coordinate system is not changed, and  the "X Direction" and the "Y Direction" are simply reversed In case of a reflection with respect to an axis or a plane:  the transformation is applied to the "X Direction" and the "Y Direction", then  the "main Direction" is recomputed as the cross product "X Direction" ^ "Y Direction". This maintains the righthanded property of the coordinate system.
Performs a symmetrical transformation of this coordinate system with respect to:  the axis A1, and creates a new one. Warning This transformation is always performed on the origin. In case of a reflection with respect to a point:  the main direction of the coordinate system is not changed, and  the "X Direction" and the "Y Direction" are simply reversed In case of a reflection with respect to an axis or a plane:  the transformation is applied to the "X Direction" and the "Y Direction", then  the "main Direction" is recomputed as the cross product "X Direction" ^ "Y Direction". This maintains the righthanded property of the coordinate system.
Performs a symmetrical transformation of this coordinate system with respect to:  the plane defined by the origin, "X Direction" and "Y Direction" of coordinate system A2 and creates a new one. Warning This transformation is always performed on the origin. In case of a reflection with respect to a point:  the main direction of the coordinate system is not changed, and  the "X Direction" and the "Y Direction" are simply reversed In case of a reflection with respect to an axis or a plane:  the transformation is applied to the "X Direction" and the "Y Direction", then  the "main Direction" is recomputed as the cross product "X Direction" ^ "Y Direction". This maintains the righthanded property of the coordinate system.
Performs a symmetrical transformation of this coordinate system with respect to:  the point P, and creates a new one. Warning This transformation is always performed on the origin. In case of a reflection with respect to a point:  the main direction of the coordinate system is not changed, and  the "X Direction" and the "Y Direction" are simply reversed In case of a reflection with respect to an axis or a plane:  the transformation is applied to the "X Direction" and the "Y Direction", then  the "main Direction" is recomputed as the cross product "X Direction" ^ "Y Direction". This maintains the righthanded property of the coordinate system.
Rotates an axis placement. <theA1> is the axis of the rotation. theAng is the angular value of the rotation in radians.
Applies a scaling transformation on the axis placement. The "Location" point of the axisplacement is modified. Warnings : If the scale <S> is negative : . the main direction of the axis placement is not changed. . The "XDirection" and the "YDirection" are reversed. So the axis placement stay right handed.
void GAx2.SetAxis  (  GAx1  A1  ) 
Assigns the origin and "main Direction" of the axis A1 to this coordinate system, then recomputes its "X Direction" and "Y Direction". Note: The new "X Direction" is computed as follows: new "X Direction" = V1 ^(previous "X Direction" ^ V) where V is the "Direction" of A1. Exceptions Standard_ConstructionError if A1 is parallel to the "X Direction" of this coordinate system.
void GAx2.SetDirection  (  GDir  V  ) 
Changes the "main Direction" of this coordinate system, then recomputes its "X Direction" and "Y Direction". Note: the new "X Direction" is computed as follows: new "X Direction" = V ^ (previous "X Direction" ^ V) Exceptions Standard_ConstructionError if V is parallel to the "X Direction" of this coordinate system.
void GAx2.SetLocation  (  GPnt  theP  ) 
Changes the "Location" point (origin) of <me>.
void GAx2.SetXDirection  (  GDir  theVx  ) 
Changes the "Xdirection" of <me>. The main direction "Direction" is not modified, the "Ydirection" is modified. If <Vx> is not normal to the main direction then <XDirection> is computed as follows XDirection = Direction ^ (Vx ^ Direction). Exceptions Standard_ConstructionError if Vx or Vy is parallel to the "main Direction" of this coordinate system.
void GAx2.SetYDirection  (  GDir  theVy  ) 
Changes the "Ydirection" of <me>. The main direction is not modified but the "Xdirection" is changed. If <Vy> is not normal to the main direction then "YDirection" is computed as follows YDirection = Direction ^ (<Vy> ^ Direction). Exceptions Standard_ConstructionError if Vx or Vy is parallel to the "main Direction" of this coordinate system.
Transforms an axis placement with a Trsf. The "Location" point, the "XDirection" and the "YDirection" are transformed with theT. The resulting main "Direction" of <me> is the cross product between the "XDirection" and the "YDirection" after transformation.
Translates an axis placement from the point <theP1> to the point <theP2>.
Translates an axis plaxement in the direction of the vector <theV>. The magnitude of the translation is the vector's magnitude.
GDir GAx2.XDirection  (  ) 
Returns the "XDirection" of <me>.
GDir GAx2.YDirection  (  ) 
Returns the "YDirection" of <me>.