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# This file is part of Korman.
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#
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# Korman 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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# Korman 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 Korman. If not, see <http://www.gnu.org/licenses/>.
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import bpy
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import math
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class GoodNeighbor:
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"""Leave Things the Way You Found Them! (TM)"""
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def __enter__(self):
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self._tracking = {}
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return self
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def track(self, cls, attr, value):
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if (cls, attr) not in self._tracking:
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self._tracking[(cls, attr)] = getattr(cls, attr)
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setattr(cls, attr, value)
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def __exit__(self, type, value, traceback):
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for (cls, attr), value in self._tracking.items():
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setattr(cls, attr, value)
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class TemporaryObject:
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def __init__(self, obj, remove_func):
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self._obj = obj
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self._remove_func = remove_func
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def __enter__(self):
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return self
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def __exit__(self, type, value, traceback):
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self._remove_func(self._obj)
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def __getattr__(self, attr):
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return getattr(self._obj, attr)
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def ensure_power_of_two(value):
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return pow(2, math.floor(math.log(value, 2)))
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def find_modifier(boname, modid):
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"""Given a Blender Object name, finds a given modifier and returns it or None"""
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bo = bpy.data.objects.get(boname, None)
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if bo is not None:
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# if they give us the wrong modid, it is a bug and an AttributeError
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return getattr(bo.plasma_modifiers, modid)
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return None
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