84 lines
2.9 KiB
Python
84 lines
2.9 KiB
Python
from tclCommands.TclCommand import TclCommandSignaled
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import collections
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import gettext
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import appTranslation as fcTranslate
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import builtins
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fcTranslate.apply_language('strings')
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if '_' not in builtins.__dict__:
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_ = gettext.gettext
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class TclCommandSubtractRectangle(TclCommandSignaled):
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"""
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Tcl shell command to subtract a rectangle from the given Geometry object.
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"""
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# array of all command aliases, to be able use old names for backward compatibility (add_poly, add_polygon)
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aliases = ['subtract_rectangle']
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description = '%s %s' % ("--", "Subtract a rectangle from the given Geometry object. "
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"The coordinates are provided in X Y pairs.")
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# Dictionary of types from Tcl command, needs to be ordered.
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# For positional arguments
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arg_names = collections.OrderedDict([
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('name', str)
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])
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# Dictionary of types from Tcl command, needs to be ordered.
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# For options like -optionname value
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option_types = collections.OrderedDict([
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])
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# array of mandatory options for current Tcl command: required = {'name','outname'}
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required = ['name']
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# structured help for current command, args needs to be ordered
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help = {
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'main': "Subtract a rectangle from the given Geometry object. The coordinates are provided in X Y pairs.\n"
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"If the number of coordinates is not even then the 'Incomplete coordinates' error is raised.",
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'args': collections.OrderedDict([
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('name', 'Name of the Geometry object from which to subtract. Required.'),
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('x0 y0', 'Bottom left corner coordinates.'),
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('x1 y1', 'Top right corner coordinates.')
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]),
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'examples': ['subtract_rectangle geo_obj 8 8 15 15']
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}
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def execute(self, args, unnamed_args):
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"""
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execute current TCL shell command
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:param args: array of known named arguments and options
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:param unnamed_args: array of other values which were passed into command
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without -somename and we do not have them in known arg_names
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:return: None or exception
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"""
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if 'name' not in args:
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self.raise_tcl_error("%s:" % _("No Geometry name in args. Provide a name and try again."))
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return 'fail'
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obj_name = args['name']
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if len(unnamed_args) != 4:
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self.raise_tcl_error("Incomplete coordinates. There are 4 required: x0 y0 x1 y1.")
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return 'fail'
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x0 = float(unnamed_args[0])
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y0 = float(unnamed_args[1])
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x1 = float(unnamed_args[2])
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y1 = float(unnamed_args[3])
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try:
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obj = self.app.collection.get_by_name(str(obj_name))
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except Exception:
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return "Could not retrieve object: %s" % obj_name
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if obj is None:
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return "Object not found: %s" % obj_name
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obj.subtract_polygon([(x0, y0), (x1, y0), (x1, y1), (x0, y1)])
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