clip_region_rel — 相对于其最小的周围矩形剪裁一个区域。
clip_region_rel reduces the Region by eliminating
parts close to the smallest surrounding rectangle of the
Region. Specifically this means that the Region is
clipped to a rectangle that is smaller than or equal to the smallest
surrounding rectangle. The resulting clipped region is returned in
RegionClipped.
The rectangle to which the Region is clipped is determined by
reducing the smallest surrounding axis-parallel rectangle at the top,
bottom, left, and right side by the values given in Top,
Bottom, Left, and Right, respectively.
| ( 1) | ( 2) |
These four parameters must contain numbers larger or equal to zero. If all parameters are set to zero, the region remains unchanged.
Region (input_object) region(-array) → object
Regions to be clipped.
RegionClipped (output_object) region(-array) → object
Clipped regions.
Top (input_control) integer → (integer)
Number of rows clipped at the top.
默认值： 1
建议值： 0, 1, 2, 3, 4, 5, 7, 10, 20, 30, 50
值范围：
0
≤
Top
(lin)
最小增量： 1
建议增量： 1
Bottom (input_control) integer → (integer)
Number of rows clipped at the bottom.
默认值： 1
建议值： 0, 1, 2, 3, 4, 5, 7, 10, 20, 30, 50
值范围：
0
≤
Bottom
(lin)
最小增量： 1
建议增量： 1
Left (input_control) integer → (integer)
Number of columns clipped at the left.
默认值： 1
建议值： 0, 1, 2, 3, 4, 5, 7, 10, 20, 30, 50
值范围：
0
≤
Left
(lin)
最小增量： 1
建议增量： 1
Right (input_control) integer → (integer)
Number of columns clipped at the right.
默认值： 1
建议值： 0, 1, 2, 3, 4, 5, 7, 10, 20, 30, 50
值范围：
0
≤
Right
(lin)
最小增量： 1
建议增量： 1
clip_region_rel returns 2 (
H_MSG_TRUE)
if all parameters are
correct. The behavior in case of empty input (no regions given) can
be set via set_system('no_object_result',<Result>)
and the behavior in case of an empty input region via
set_system('empty_region_result',<Result>).
If necessary, an exception is raised.
threshold,
connection,
regiongrowing,
pouring
smallest_rectangle1,
intersection,
gen_rectangle1,
clip_region
Foundation