93 lines
3.0 KiB
Python
93 lines
3.0 KiB
Python
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# -*- coding: utf-8 -*-
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# Copyright (C) 2018 Michael Matthews
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#
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# This file is part of CutCraft.
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#
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# CutCraft is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# CutCraft is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with CutCraft. If not, see <http://www.gnu.org/licenses/>.
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from copy import deepcopy
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from .point import Point
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from .rectangle import Rectangle
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from .trace import Trace
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class Part(object):
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""" List of traces that make up a part. """
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def __init__(self):
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self.traces = []
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return
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def close(self):
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""" Close each traces back to their start. """
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for trace in self.traces:
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trace.close()
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return
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def applykerf(self, kerf):
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""" Apply an offset to allow for the kerf when cutting. """
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for trace in self.traces:
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trace.applykerf(kerf)
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return
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def svg(self):
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# Generate SVG string for this part.
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return " ".join([trace.svg() for trace in self.traces])
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def bbox(self):
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bboxes = [trace.bbox() for trace in self.traces]
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x = [p1.x for p1, p2 in bboxes] + [p2.x for p1, p2 in bboxes]
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y = [p1.y for p1, p2 in bboxes] + [p2.y for p1, p2 in bboxes]
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return Rectangle(Point(min(x), min(y)), Point(max(x), max(y)))
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def area(self):
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bbox = self.bbox()
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return bbox.area()
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def size(self):
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bbox = self.bbox()
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return bbox.size()
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def __add__(self, other):
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p = Part()
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if isinstance(other, Part):
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p.traces = self.traces + deepcopy(other.traces)
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elif isinstance(other, Trace):
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p.traces = deepcopy(self.traces)
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p.traces.append(other)
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elif isinstance(other, Point):
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p.traces = self.traces
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for trace in p.traces:
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trace.offset(other)
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else:
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raise RuntimeError("Can only add a Part, Trace or Point to an existing Part.")
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return p
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def __iadd__(self, other):
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if isinstance(other, Part):
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self.traces.extend(other.traces)
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elif isinstance(other, Trace):
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self.traces.append(deepcopy(other))
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elif isinstance(other, Point):
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for trace in self.traces:
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trace.offset(other)
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else:
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raise RuntimeError("Can only add a Part, Trace or Point to an existing Part.")
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return self
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def __repr__(self):
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return "Part" + str(self)
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def __str__(self):
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l = len(self.traces)
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return "(" + str(l) + " trace" + ("s" if l>1 else "") + ")"
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