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ExternalPolygon is a data tool defining a series of polygons.
The polygons can be defined by clicking in the image. More on
polygon operations.
The image shows the region of interest for a ColorMatcher driven from python
- the path is defined in an ExternalPolygon.
Setup
- Numbered list
-
ordered list of polygons
- New
-
Make room for new
polygon to be typed or pasted in
- Delete
-
Delete selected
polygon
- Up
-
Move selected polygon up
in list
- Dpwn
-
Move selected polygon
down in list
- Paste new - Paste polygon from clipboard into new position at end
of list
- Highlight selection - Show polygon in red in main image
- Copy - Copy selected polygon to clipboard
- Paste - Paste polygon from clipboard into selected position
Further commands are available by right-clicking the numbered list.
Visualisation
None
Results
|
Count
|
Number of defined polygons
|
|
Polygon[1]-Polygon[16]
|
The first 16 defined
polygons, as Python tuples
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Note that only the first 16 polygons are reported as
results - use executeCmd to access the remaining polygons.
Example: Using polygon results in scripts
points =
eval(GetValue('top_polygons.Polygon[1]')) # converts the result string to a
python tuple
ExecuteCmd support (see also executeCmd)
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Command
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Parameters
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Return values
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Comments
|
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Set |
Object=ROI;Number=<n>;Value=<polygon>
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ok,None
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Set an existing polygon's value from StrVec
format |
|
Add |
Object=ROI;Value=<polygon>
|
ok,None
|
Add new polygon from StrVec
format |
|
Get |
Object=ROI;Number=<n> |
ok,<polygon> |
Retrieve polygon in StrVec
format, open polygon |
|
Get
|
Object=Count
|
ok,<count>
|
Retrieve number of defined polygons
|
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Get
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Object=Tuple;Number=<n>
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ok,<tuple>
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Retrieve polygon as a Python tuple
|
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Delete |
Object=ROI;Number=<n> |
ok,None |
Delete numbered polygon |
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DeleteAll
|
-
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ok,None
|
Delete all polygons
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