distance_cc_mindistance_cc_minDistanceCcMinDistanceCcMindistance_cc_min (算子)

名称

distance_cc_mindistance_cc_minDistanceCcMinDistanceCcMindistance_cc_min — 计算两个轮廓之间的最小距离。

签名

distance_cc_min(Contour1, Contour2 : : Mode : DistanceMin)

描述

distance_cc_mindistance_cc_minDistanceCcMinDistanceCcMinDistanceCcMindistance_cc_min calculates the minimum distance between two contours Contour1Contour1Contour1Contour1contour1contour_1 and Contour2Contour2Contour2Contour2contour2contour_2. The minimum distance is returned in DistanceMinDistanceMinDistanceMinDistanceMindistanceMindistance_min。

The parameter ModeModeModeModemodemode sets the type of computing the distance. 'point_to_point'"point_to_point""point_to_point""point_to_point""point_to_point""point_to_point" determines the distance between the closest contour points, 'fast_point_to_segment'"fast_point_to_segment""fast_point_to_segment""fast_point_to_segment""fast_point_to_segment""fast_point_to_segment" calculates the distance between the line segments adjacent to these points, and 'point_to_segment'"point_to_segment""point_to_segment""point_to_segment""point_to_segment""point_to_segment" determines the actual minimum distance between the contour segments.

While 'point_to_point'"point_to_point""point_to_point""point_to_point""point_to_point""point_to_point" and 'fast_point_to_segment'"fast_point_to_segment""fast_point_to_segment""fast_point_to_segment""fast_point_to_segment""fast_point_to_segment" are efficient algorithms with a complexity of n*log(n), 'point_to_segment'"point_to_segment""point_to_segment""point_to_segment""point_to_segment""point_to_segment" has quadratic complexity and thus takes a longer time to execute, especially for contours with many line segments.

注意

Both iconic input parameters must contain the same number of contours.

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）。
在内部数据级别上自动并行化。

参数

Contour1Contour1Contour1Contour1contour1contour_1 (输入对象) xld_cont(-array) → object

First input contour.

Contour2Contour2Contour2Contour2contour2contour_2 (输入对象) xld_cont(-array) → object

Second input contour.

ModeModeModeModemodemode (输入控制) string → (string)

Distance calculation mode.

默认值： 'fast_point_to_segment' "fast_point_to_segment" "fast_point_to_segment" "fast_point_to_segment" "fast_point_to_segment" "fast_point_to_segment"

值列表： 'fast_point_to_segment'"fast_point_to_segment""fast_point_to_segment""fast_point_to_segment""fast_point_to_segment""fast_point_to_segment", 'point_to_point'"point_to_point""point_to_point""point_to_point""point_to_point""point_to_point", 'point_to_segment'"point_to_segment""point_to_segment""point_to_segment""point_to_segment""point_to_segment"

DistanceMinDistanceMinDistanceMinDistanceMindistanceMindistance_min (输出控制) number(-array) → (real)

Minimum distance between the two contours.

示例（C）

gen_contour_polygon_rounded_xld(Cont1, [0,100,100,0,0], [0,0,100,100,0],
                                [50,50,50,50,50], 0.5);
gen_contour_polygon_rounded_xld(Cont2, [41,91,91,41,41], [41,41,91,91,41],
                                [25,25,25,25,25], 0.5);
distance_cc_min(Cont1, Cont2, "fast_point_to_segment", &distance_min);

结果

distance_cc_mindistance_cc_minDistanceCcMinDistanceCcMinDistanceCcMindistance_cc_min 返回 2 ( H_MSG_TRUE )。

替代

distance_scdistance_scDistanceScDistanceScDistanceScdistance_sc, distance_pcdistance_pcDistancePcDistancePcDistancePcdistance_pc, distance_ccdistance_ccDistanceCcDistanceCcDistanceCcdistance_cc, distance_contours_xlddistance_contours_xldDistanceContoursXldDistanceContoursXldDistanceContoursXlddistance_contours_xld

另见

distance_srdistance_srDistanceSrDistanceSrDistanceSrdistance_sr, distance_prdistance_prDistancePrDistancePrDistancePrdistance_pr

模块

基础

算子