gen_checker_regiongen_checker_regionGenCheckerRegionGenCheckerRegiongen_checker_region (算子)
名称
gen_checker_regiongen_checker_regionGenCheckerRegionGenCheckerRegiongen_checker_region — 创建一个方格区域。
签名
描述
算子 gen_checker_regiongen_checker_regionGenCheckerRegionGenCheckerRegionGenCheckerRegiongen_checker_region returns a checkered region.
Every black field of the checkerboard belongs to the region.
The horizontal and vertical expansion of the region is limited by
WidthRegionWidthRegionWidthRegionWidthRegionwidthRegionwidth_region, HeightRegionHeightRegionHeightRegionHeightRegionheightRegionheight_region respectively,
the size of the fields of the checkerboard by
WidthPatternWidthPatternWidthPatternWidthPatternwidthPatternwidth_pattern * HeightPatternHeightPatternHeightPatternHeightPatternheightPatternheight_pattern。
注意
If a very small pattern is chosen
(WidthPatternWidthPatternWidthPatternWidthPatternwidthPatternwidth_pattern < 4) the created region requires much storage.
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
RegionCheckerRegionCheckerRegionCheckerRegionCheckerregionCheckerregion_checker (输出对象) region → objectHRegionHObjectHRegionHobject *
Created checkerboard region.
WidthRegionWidthRegionWidthRegionWidthRegionwidthRegionwidth_region (输入控制) extent.x → HTupleintHTupleHtuple (integer) (int / long) (Hlong) (Hlong)
Largest occurring x value of the region.
默认值：
511
建议值：
10, 20, 31, 63, 127, 255, 300, 400, 511
值范围：
1
≤
WidthRegion
WidthRegion
WidthRegion
WidthRegion
widthRegion
width_region
(lin)
最小增量：
1
建议增量：
10
HeightRegionHeightRegionHeightRegionHeightRegionheightRegionheight_region (输入控制) extent.y → HTupleintHTupleHtuple (integer) (int / long) (Hlong) (Hlong)
Largest occurring y value of the region.
默认值：
511
建议值：
10, 20, 31, 63, 127, 255, 300, 400, 511
值范围：
1
≤
HeightRegion
HeightRegion
HeightRegion
HeightRegion
heightRegion
height_region
(lin)
最小增量：
1
建议增量：
10
WidthPatternWidthPatternWidthPatternWidthPatternwidthPatternwidth_pattern (输入控制) extent.x → HTupleintHTupleHtuple (integer) (int / long) (Hlong) (Hlong)
Width of a field of the checkerboard.
默认值：
64
建议值：
1, 2, 4, 8, 16, 20, 32, 64, 100, 128, 200, 300, 500
值范围：
1
≤
WidthPattern
WidthPattern
WidthPattern
WidthPattern
widthPattern
width_pattern
(lin)
最小增量：
1
建议增量：
10
限制：
WidthPattern < WidthRegion
HeightPatternHeightPatternHeightPatternHeightPatternheightPatternheight_pattern (输入控制) extent.y → HTupleintHTupleHtuple (integer) (int / long) (Hlong) (Hlong)
Height of a field of the checkerboard.
默认值：
64
建议值：
1, 2, 4, 8, 16, 20, 32, 64, 100, 128, 200, 300, 500
值范围：
1
≤
HeightPattern
HeightPattern
HeightPattern
HeightPattern
heightPattern
height_pattern
(lin)
最小增量：
1
建议增量：
10
限制：
HeightPattern < HeightRegion
示例（HDevelop）
gen_checker_region(Checker,512,512,32,64)
dev_set_draw('fill')
dev_display (Checker)
复杂度
The required storage (in bytes) for the region is:
O((WidthRegionWidthRegionWidthRegionWidthRegionwidthRegionwidth_region * HeightRegionHeightRegionHeightRegionHeightRegionheightRegionheight_region) /
WidthPatternWidthPatternWidthPatternWidthPatternwidthPatternwidth_pattern)
结果
算子 gen_checker_regiongen_checker_regionGenCheckerRegionGenCheckerRegionGenCheckerRegiongen_checker_region 在参数值正确时返回值 2 ( H_MSG_TRUE )。否则将抛出异常。
The clipping according to the current image format is set via the operator
set_system('clip_region',<'true'/'false'>)set_system("clip_region",<"true"/"false">)SetSystem("clip_region",<"true"/"false">)SetSystem("clip_region",<"true"/"false">)SetSystem("clip_region",<"true"/"false">)set_system("clip_region",<"true"/"false">)。
可能的后继
paint_regionpaint_regionPaintRegionPaintRegionPaintRegionpaint_region
替代
gen_grid_regiongen_grid_regionGenGridRegionGenGridRegionGenGridRegiongen_grid_region,
gen_region_polygon_filledgen_region_polygon_filledGenRegionPolygonFilledGenRegionPolygonFilledGenRegionPolygonFilledgen_region_polygon_filled,
gen_region_pointsgen_region_pointsGenRegionPointsGenRegionPointsGenRegionPointsgen_region_points,
gen_region_runsgen_region_runsGenRegionRunsGenRegionRunsGenRegionRunsgen_region_runs,
gen_rectangle1gen_rectangle1GenRectangle1GenRectangle1GenRectangle1gen_rectangle1,
concat_objconcat_objConcatObjConcatObjConcatObjconcat_obj,
gen_random_regiongen_random_regionGenRandomRegionGenRandomRegionGenRandomRegiongen_random_region,
gen_random_regionsgen_random_regionsGenRandomRegionsGenRandomRegionsGenRandomRegionsgen_random_regions
另见
reduce_domainreduce_domainReduceDomainReduceDomainReduceDomainreduce_domain
模块
基础