test_region_pointtest_region_pointTestRegionPointTestRegionPointtest_region_point (算子)
名称
test_region_pointtest_region_pointTestRegionPointTestRegionPointtest_region_point — 测试该区域是否包含给定点。
签名
def test_region_point(regions: HObject, row: MaybeSequence[Union[int, float]], column: MaybeSequence[Union[int, float]]) -> int
描述
If an array of regions and one test point is provided,
test_region_pointtest_region_pointTestRegionPointTestRegionPointTestRegionPointtest_region_point tests if at least one input region of
RegionsRegionsRegionsRegionsregionsregions contains the single test point given in
(RowRowRowRowrowrow,ColumnColumnColumnColumncolumncolumn). If this is the case, IsInsideIsInsideIsInsideIsInsideisInsideis_inside is
set to TRUE, else to FALSE. Alternatively, if a single region and several
test points are provided, test_region_pointtest_region_pointTestRegionPointTestRegionPointTestRegionPointtest_region_point tests if at least
one of the test points (given in RowRowRowRowrowrow,ColumnColumnColumnColumncolumncolumn) is contained
in the input region given in RegionsRegionsRegionsRegionsregionsregions.
If this is the case, IsInsideIsInsideIsInsideIsInsideisInsideis_inside is set to TRUE, otherwise it is set
to FALSE. If (RowRowRowRowrowrow,ColumnColumnColumnColumncolumncolumn) are real-valued, rounding is
performed internally since regions are pixel precise.
注意
The test pixel is not contained in an empty region
(no pixel of the region corresponds to the pixel).
If all regions are empty IsInsideIsInsideIsInsideIsInsideisInsideis_inside is set to
FALSE.
In case of an empty input object (empty tuple) RegionsRegionsRegionsRegionsregionsregions and
set_system('no_object_result','true')set_system("no_object_result","true")SetSystem("no_object_result","true")SetSystem("no_object_result","true")SetSystem("no_object_result","true")set_system("no_object_result","true"), an empty tuple is
returned in IsInsideIsInsideIsInsideIsInsideisInsideis_inside. If
set_system('no_object_result','false')set_system("no_object_result","false")SetSystem("no_object_result","false")SetSystem("no_object_result","false")SetSystem("no_object_result","false")set_system("no_object_result","false") was set, an exception is
raised.
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
RegionsRegionsRegionsRegionsregionsregions (输入对象) region(-array) → objectHRegionHObjectHRegionHobject
待检查的区域。
RowRowRowRowrowrow (输入控制) point.y(-array) → HTupleMaybeSequence[Union[int, float]]HTupleHtuple (integer / real) (int / long / double) (Hlong / double) (Hlong / double)
Row index of the test pixel(s).
默认值：
100
ColumnColumnColumnColumncolumncolumn (输入控制) point.x(-array) → HTupleMaybeSequence[Union[int, float]]HTupleHtuple (integer / real) (int / long / double) (Hlong / double) (Hlong / double)
Column index of the test pixel(s).
元素数量：
Row == Column
默认值：
100
IsInsideIsInsideIsInsideIsInsideisInsideis_inside (输出控制) integer → HTupleintHTupleHtuple (integer) (int / long) (Hlong) (Hlong)
Boolean result value.
复杂度
If F is the area of one region, N is the number of regions, and M is
the number of test points, the runtime complexity is
O(ln(sqrt(F)) * N) in the case of one test point and several regions and
O(ln(sqrt(F)) * M) in the case of one region and several test points.
结果
算子 test_region_pointtest_region_pointTestRegionPointTestRegionPointTestRegionPointtest_region_point 在参数正确时返回值 2 ( H_MSG_TRUE )。
The behavior in case of an empty object is
set via the operator set_system('no_object_result',<Result>)set_system("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)set_system("no_object_result",<Result>)。如有必要，则抛出异常。
可能的前趋
thresholdthresholdThresholdThresholdThresholdthreshold,
regiongrowingregiongrowingRegiongrowingRegiongrowingRegiongrowingregiongrowing,
connectionconnectionConnectionConnectionConnectionconnection
替代
union1union1Union1Union1Union1union1,
intersectionintersectionIntersectionIntersectionIntersectionintersection,
area_centerarea_centerAreaCenterAreaCenterAreaCenterarea_center
另见
select_region_pointselect_region_pointSelectRegionPointSelectRegionPointSelectRegionPointselect_region_point
模块
基础