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I need to extract multiple clip regions from a target
Region, just like the function
Layout#multi_clip() does, except that the execution object is replaced with
Region. But it seems that there is no direct function to achieve this process, so I try to achieve it through the AND operation of two region:
# method 1 clip_region_list =  for polygon in clip_area_polygon_list: #clip_area_polygon_list is a list of clip areas defined by polygon clip_boundary= db.Region(polygon) clip_region_list.append(clip_boundary & target_region) # target_region is the region to be clipped
However, the AND operation of
target_region in cycle will take a lot of time, because the
target_region is usually very large. So I used method 2 to reduce the runtime.
# method 2 clip_region_list =  clips_region = target_region & db.Region(clip_area_polygon_list) for polygon in clip_area_polygon_list: clip_boundary= db.Region(polygon) clip_region_list.append(clip_boundary & clips_region)
My question is whether there is a faster way, or whether this function can be added to the new version of klayout if it is easy to do. Because the clip operation on a single-layer region is a very common operation.