Describes an axis in the plane (2D space). An axis is defined by: - its origin (also referred to as its "Location point"), and - its unit vector (referred to as its "Direction"). An axis implicitly defines a direct, right-handed coordinate system in 2D space by: - its origin, - its "Direction" (giving the "X Direction" of the coordinate system), and - the unit vector normal to "Direction" (positive angle measured in the trigonometric sense). An axis is used: - to describe 2D geometric entities (for example, the axis which defines angular coordinates on a circle). It serves for the same purpose as the STEP function "axis placement one axis", or - to define geometric transformations (axis of symmetry, axis of rotation, and so on). Note: to define a left-handed 2D coordinate system, use gp_Ax22d. 更多...
Public 成员函数 | |
| GAx2d (global::System.IntPtr cPtr, bool cMemoryOwn) | |
| 仅供内部使用 | |
| void | Dispose () |
| GAx2d () | |
| Creates an axis object representing X axis of the reference co-ordinate system. | |
| GAx2d (GPnt2d theP, GDir2d theV) | |
| Creates an Ax2d. <theP> is the "Location" point of the axis placement and theV is the "Direction" of the axis placement. | |
| void | SetLocation (GPnt2d theP) |
| Changes the "Location" point (origin) of <me>. | |
| void | SetDirection (GDir2d theV) |
| Changes the direction of <me>. | |
| GPnt2d | Location () |
| Returns the origin of <me>. | |
| GDir2d | Direction () |
| Returns the direction of <me>. | |
| bool | IsCoaxial (GAx2d Other, double AngularTolerance, double LinearTolerance) |
| Returns True if : . the angle between <me> and <Other> is lower or equal to <AngularTolerance> and . the distance between <me>.Location() and <Other> is lower or equal to <LinearTolerance> and . the distance between <Other>.Location() and <me> is lower or equal to LinearTolerance. | |
| bool | IsNormal (GAx2d theOther, double theAngularTolerance) |
| Returns true if this axis and the axis theOther are normal to each other. That is, if the angle between the two axes is equal to Pi/2 or -Pi/2. Note: the tolerance criterion is given by theAngularTolerance. | |
| bool | IsOpposite (GAx2d theOther, double theAngularTolerance) |
| Returns true if this axis and the axis theOther are parallel, and have opposite orientations. That is, if the angle between the two axes is equal to Pi or -Pi. Note: the tolerance criterion is given by theAngularTolerance. | |
| bool | IsParallel (GAx2d theOther, double theAngularTolerance) |
| Returns true if this axis and the axis theOther are parallel, and have either the same or opposite orientations. That is, if the angle between the two axes is equal to 0, Pi or -Pi. Note: the tolerance criterion is given by theAngularTolerance. | |
| double | Angle (GAx2d theOther) |
| Computes the angle, in radians, between this axis and the axis theOther. The value of the angle is between -Pi and Pi. | |
| void | Reverse () |
| Reverses the direction of <me> and assigns the result to this axis. | |
| GAx2d | Reversed () |
| Computes a new axis placement with a direction opposite to the direction of <me>. | |
| void | Mirror (GPnt2d P) |
| GAx2d | Mirrored (GPnt2d P) |
| Performs the symmetrical transformation of an axis placement with respect to the point P which is the center of the symmetry. | |
| void | Mirror (GAx2d A) |
| GAx2d | Mirrored (GAx2d A) |
| Performs the symmetrical transformation of an axis placement with respect to an axis placement which is the axis of the symmetry. | |
| void | Rotate (GPnt2d theP, double theAng) |
| GAx2d | Rotated (GPnt2d theP, double theAng) |
| Rotates an axis placement. <theP> is the center of the rotation. theAng is the angular value of the rotation in radians. | |
| void | Scale (GPnt2d P, double S) |
| GAx2d | Scaled (GPnt2d theP, double theS) |
| Applies a scaling transformation on the axis placement. The "Location" point of the axisplacement is modified. The "Direction" is reversed if the scale is negative. | |
| void | Transform (GTrsf2d theT) |
| GAx2d | Transformed (GTrsf2d theT) |
| Transforms an axis placement with a Trsf. | |
| void | Translate (GVec2d theV) |
| GAx2d | Translated (GVec2d theV) |
| Translates an axis placement in the direction of the vector theV. The magnitude of the translation is the vector's magnitude. | |
| void | Translate (GPnt2d theP1, GPnt2d theP2) |
| GAx2d | Translated (GPnt2d theP1, GPnt2d theP2) |
| Translates an axis placement from the point theP1 to the point theP2. | |
详细描述
Describes an axis in the plane (2D space). An axis is defined by: - its origin (also referred to as its "Location point"), and - its unit vector (referred to as its "Direction"). An axis implicitly defines a direct, right-handed coordinate system in 2D space by: - its origin, - its "Direction" (giving the "X Direction" of the coordinate system), and - the unit vector normal to "Direction" (positive angle measured in the trigonometric sense). An axis is used: - to describe 2D geometric entities (for example, the axis which defines angular coordinates on a circle). It serves for the same purpose as the STEP function "axis placement one axis", or - to define geometric transformations (axis of symmetry, axis of rotation, and so on). Note: to define a left-handed 2D coordinate system, use gp_Ax22d.
