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RegionContours
Computes an array of closed paths corresponding to the contours of the input region.
Syntax
C++
C#
void avl::RegionContours ( const avl::Region& inRegion, const avl::RegionContourMode::Type inContourMode, avl::RegionConnectivity::Type inRegionConnectivity, atl::Array<avl::Path>& outContours )
Parameters
Name | Type | Default | Description | |
---|---|---|---|---|
inRegion | const Region& | Input region | ||
inContourMode | const RegionContourMode::Type | |||
inRegionConnectivity | RegionConnectivity::Type | EightDirections | Region connectivity semantics | |
outContours | Array<Path>& |
Description
The operation forms an array of paths that, depending on the value of the inContourMode parameter:
- Pass through the centers of boundary pixels of the region, if inContourMode is set to PixelCenters
- Run along the edges of boundary pixels of the region, if inContourMode is set to PixelEdges
To compute the approximation of the region perimeter length, one can use RegionPerimeterLength filter.