71 lines
2.5 KiB
Python
71 lines
2.5 KiB
Python
from tclCommands.TclCommand import TclCommandSignaled
|
|
|
|
import collections
|
|
|
|
|
|
class TclCommandSubtractPoly(TclCommandSignaled):
|
|
"""
|
|
Tcl shell command to create a new empty Geometry object.
|
|
"""
|
|
|
|
# array of all command aliases, to be able use old names for backward compatibility (add_poly, add_polygon)
|
|
aliases = ['subtract_poly']
|
|
|
|
description = '%s %s' % ("--", "Subtract polygon from the given Geometry object. "
|
|
"The coordinates are provided in X Y pairs.")
|
|
|
|
# Dictionary of types from Tcl command, needs to be ordered.
|
|
# For positional arguments
|
|
arg_names = collections.OrderedDict([
|
|
('name', str)
|
|
])
|
|
|
|
# Dictionary of types from Tcl command, needs to be ordered.
|
|
# For options like -optionname value
|
|
option_types = collections.OrderedDict([
|
|
|
|
])
|
|
|
|
# array of mandatory options for current Tcl command: required = {'name','outname'}
|
|
required = ['name']
|
|
|
|
# structured help for current command, args needs to be ordered
|
|
help = {
|
|
'main': "Subtract polygon from the given Geometry object. The coordinates are provided in X Y pairs.\n"
|
|
"If the number of coordinates is not even then the 'Incomplete coordinate' error is raised.\n"
|
|
"If last coordinates are not the same as the first ones, the polygon will be completed automatically.",
|
|
'args': collections.OrderedDict([
|
|
('name', 'Name of the Geometry object from which to subtract. Required.'),
|
|
('x0 y0 x1 y1 x2 y2 ...', 'Points defining the polygon.')
|
|
]),
|
|
'examples': ['subtract_poly my_geo 0 0 2 1 3 3 4 4 0 0']
|
|
}
|
|
|
|
def execute(self, args, unnamed_args):
|
|
"""
|
|
execute current TCL shell command
|
|
|
|
:param args: array of known named arguments and options
|
|
:param unnamed_args: array of other values which were passed into command
|
|
without -somename and we do not have them in known arg_names
|
|
:return: None or exception
|
|
"""
|
|
|
|
obj_name = args['name']
|
|
|
|
if len(unnamed_args) % 2 != 0:
|
|
return "Incomplete coordinate."
|
|
|
|
points = [
|
|
[float(unnamed_args[2 * i]), float(unnamed_args[2 * i + 1])] for i in range(int(len(unnamed_args) / 2))
|
|
]
|
|
|
|
try:
|
|
obj = self.app.collection.get_by_name(str(obj_name))
|
|
except Exception:
|
|
return "Could not retrieve object: %s" % obj_name
|
|
if obj is None:
|
|
return "Object not found: %s" % obj_name
|
|
|
|
obj.subtract_polygon(points)
|