test_self_intersection_xldtest_self_intersection_xldTestSelfIntersectionXldTestSelfIntersectionXldtest_self_intersection_xld (算子)

名称

test_self_intersection_xldtest_self_intersection_xldTestSelfIntersectionXldTestSelfIntersectionXldtest_self_intersection_xld — 测试 XLD 轮廓或多边形的自相交。

签名

test_self_intersection_xld(XLD : : CloseXLD : DoesIntersect)

描述

test_self_intersection_xldtest_self_intersection_xldTestSelfIntersectionXldTestSelfIntersectionXldTestSelfIntersectionXldtest_self_intersection_xld tests whether the input contours or polygons in XLDXLDXLDXLDXLDxld intersect or touch themselves. The output array DoesIntersectDoesIntersectDoesIntersectDoesIntersectdoesIntersectdoes_intersect contains a 1 if the corresponding input contour or polygon intersects or touches itself and 0 otherwise.

If the input parameter CloseXLDCloseXLDCloseXLDCloseXLDcloseXLDclose_xld is set to 'true'"true""true""true""true""true", open contours or polygons are closed before the check is performed by simply connecting the first and the last contour or polygon point with a line segment.

注意

A contour or polygon touches itself if a contour or polygon point lies exactly on a contour or polygon segment. However, whether a point lies exactly on a contour or polygon segment or not can practically not be decided because of numerical reasons.

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）。
在元组级别上自动并行化。

参数

XLDXLDXLDXLDXLDxld (输入对象) xld(-array) → object

Input contours or polygons.

CloseXLDCloseXLDCloseXLDCloseXLDcloseXLDclose_xld (输入控制) string → (string)

Should the input contours or polygons be closed first?

默认值： 'true' "true" "true" "true" "true" "true"

值列表： 'false'"false""false""false""false""false", 'true'"true""true""true""true""true"

DoesIntersectDoesIntersectDoesIntersectDoesIntersectdoesIntersectdoes_intersect (输出控制) number(-array) → (integer)

1 for contours or polygons with self intersection and 0 otherwise.

模块

基础

算子