get_points_ellipseget_points_ellipseGetPointsEllipseGetPointsEllipseget_points_ellipse (算子)
名称
get_points_ellipseget_points_ellipseGetPointsEllipseGetPointsEllipseget_points_ellipse — 计算椭圆周长上的点。
签名
Herror get_points_ellipse(double Angle, double Row, double Column, double Phi, double Radius1, double Radius2, double* RowPoint, double* ColPoint)
Herror T_get_points_ellipse(const Htuple Angle, const Htuple Row, const Htuple Column, const Htuple Phi, const Htuple Radius1, const Htuple Radius2, Htuple* RowPoint, Htuple* ColPoint)
void GetPointsEllipse(const HTuple& Angle, const HTuple& Row, const HTuple& Column, const HTuple& Phi, const HTuple& Radius1, const HTuple& Radius2, HTuple* RowPoint, HTuple* ColPoint)
static void HMisc::GetPointsEllipse(const HTuple& Angle, double Row, double Column, double Phi, double Radius1, double Radius2, HTuple* RowPoint, HTuple* ColPoint)
static void HMisc::GetPointsEllipse(double Angle, double Row, double Column, double Phi, double Radius1, double Radius2, double* RowPoint, double* ColPoint)
static void HOperatorSet.GetPointsEllipse(HTuple angle, HTuple row, HTuple column, HTuple phi, HTuple radius1, HTuple radius2, out HTuple rowPoint, out HTuple colPoint)
static void HMisc.GetPointsEllipse(HTuple angle, double row, double column, double phi, double radius1, double radius2, out HTuple rowPoint, out HTuple colPoint)
static void HMisc.GetPointsEllipse(double angle, double row, double column, double phi, double radius1, double radius2, out double rowPoint, out double colPoint)
def get_points_ellipse(angle: MaybeSequence[float], row: float, column: float, phi: float, radius_1: float, radius_2: float) -> Tuple[Sequence[float], Sequence[float]]
def get_points_ellipse_s(angle: MaybeSequence[float], row: float, column: float, phi: float, radius_1: float, radius_2: float) -> Tuple[float, float]
描述
get_points_ellipseget_points_ellipseGetPointsEllipseGetPointsEllipseGetPointsEllipseget_points_ellipse returns the point
(RowPointRowPointRowPointRowPointrowPointrow_point,ColPointColPointColPointColPointcolPointcol_point) on the specified ellipse
corresponding to the angle in AngleAngleAngleAngleangleangle.
With the parameter AngleAngleAngleAngleangleangle you are setting the eccentric anomaly,
which denotes the angle used for the parametric equation (see the
figure below) and refers to the main axis of the ellipse.
The ellipse itself is characterized by
the center (RowRowRowRowrowrow, ColumnColumnColumnColumncolumncolumn), the orientation of the
main axis PhiPhiPhiPhiphiphi relative to the horizontal axis, the length of
the larger (Radius1Radius1Radius1Radius1radius1radius_1) and the smaller half
axis (Radius2Radius2Radius2Radius2radius2radius_2). The angles are measured counter clockwise in
radiant.
执行信息
- 多线程类型：可重入（与非独占算子并行运行）。
- 多线程作用域：全局（可从任何线程调用）。
- 未采用并行化处理。
参数
AngleAngleAngleAngleangleangle (输入控制) angle.rad(-array) → HTupleMaybeSequence[float]HTupleHtuple (real) (double) (double) (double)
Angle corresponding to the resulting point [rad].
默认值：
0
限制：
Angle >= 0 && Angle <= 6.283185307
RowRowRowRowrowrow (输入控制) ellipse.center.y → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Row coordinate of the center of the ellipse.
ColumnColumnColumnColumncolumncolumn (输入控制) ellipse.center.x → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Column coordinate of the center of the ellipse.
PhiPhiPhiPhiphiphi (输入控制) ellipse.angle.rad → HTuplefloatHTupleHtuple (real) (double) (double) (double)
主轴方向 [弧度]。
限制：
Phi >= 0 && Phi <= 6.283185307
Radius1Radius1Radius1Radius1radius1radius_1 (输入控制) ellipse.radius1 → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Length of the larger half axis.
限制：
Radius1 > 0
Radius2Radius2Radius2Radius2radius2radius_2 (输入控制) ellipse.radius2 → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Length of the smaller half axis.
限制：
Radius2 >= 0
RowPointRowPointRowPointRowPointrowPointrow_point (输出控制) point.y(-array) → HTupleSequence[float]HTupleHtuple (real) (double) (double) (double)
Row coordinate of the point on the ellipse.
ColPointColPointColPointColPointcolPointcol_point (输出控制) point.x(-array) → HTupleSequence[float]HTupleHtuple (real) (double) (double) (double)
Column coordinates of the point on the ellipse.
示例（HDevelop）
draw_ellipse(WindowHandle,Row,Column,Phi,Radius1,Radius2)
get_points_ellipse([0,3.14],Row,Column,Phi,Radius1,Radius2,\
RowPoint,ColPoint)
结果
get_points_ellipseget_points_ellipseGetPointsEllipseGetPointsEllipseGetPointsEllipseget_points_ellipse returns 2 (
H_MSG_TRUE)
if all parameter
values are correct。如有必要，则抛出异常。
可能的前趋
fit_ellipse_contour_xldfit_ellipse_contour_xldFitEllipseContourXldFitEllipseContourXldFitEllipseContourXldfit_ellipse_contour_xld,
draw_ellipsedraw_ellipseDrawEllipseDrawEllipseDrawEllipsedraw_ellipse,
gen_ellipse_contour_xldgen_ellipse_contour_xldGenEllipseContourXldGenEllipseContourXldGenEllipseContourXldgen_ellipse_contour_xld
另见
gen_ellipse_contour_xldgen_ellipse_contour_xldGenEllipseContourXldGenEllipseContourXldGenEllipseContourXldgen_ellipse_contour_xld
模块
基础