96 lines
3.4 KiB
Python
96 lines
3.4 KiB
Python
# =============================================================================
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# Copyright (C) 2010 Diego Duclos
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#
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# This file is part of pyfa.
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#
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# pyfa 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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# pyfa 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 pyfa. If not, see <http://www.gnu.org/licenses/>.
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# =============================================================================
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import math
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from abc import ABCMeta, abstractmethod
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class PointGetter(metaclass=ABCMeta):
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def __init__(self, graph):
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self.graph = graph
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@abstractmethod
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def getRange(self, xRange, miscParams, src, tgt):
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raise NotImplementedError
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@abstractmethod
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def getPoint(self, x, miscParams, src, tgt):
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raise NotImplementedError
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class SmoothPointGetter(PointGetter, metaclass=ABCMeta):
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_baseResolution = 200
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_extraDepth = 0
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def getRange(self, xRange, miscParams, src, tgt):
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xs = []
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ys = []
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commonData = self._getCommonData(miscParams=miscParams, src=src, tgt=tgt)
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def addExtraPoints(x1, y1, x2, y2, depth):
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if depth <= 0 or y1 == y2:
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return
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newX = (x1 + x2) / 2
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newY = self._calculatePoint(x=newX, miscParams=miscParams, src=src, tgt=tgt, commonData=commonData)
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addExtraPoints(x1=prevX, y1=prevY, x2=newX, y2=newY, depth=depth - 1)
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xs.append(newX)
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ys.append(newY)
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addExtraPoints(x1=newX, y1=newY, x2=x2, y2=y2, depth=depth - 1)
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prevX = None
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prevY = None
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# Go through X points defined by our resolution setting
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for x in self._xIterLinear(xRange):
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y = self._calculatePoint(x=x, miscParams=miscParams, src=src, tgt=tgt, commonData=commonData)
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if prevX is not None and prevY is not None:
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# And if Y values of adjacent data points are not equal, add extra points
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# depending on extra depth setting
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addExtraPoints(x1=prevX, y1=prevY, x2=x, y2=y, depth=self._extraDepth)
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prevX = x
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prevY = y
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xs.append(x)
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ys.append(y)
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return xs, ys
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def getPoint(self, x, miscParams, src, tgt):
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commonData = self._getCommonData(miscParams=miscParams, src=src, tgt=tgt)
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return self._calculatePoint(x=x, miscParams=miscParams, src=src, tgt=tgt, commonData=commonData)
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def _xIterLinear(self, xRange):
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xLow = min(xRange)
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xHigh = max(xRange)
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# Resolution defines amount of ranges between points here,
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# not amount of points
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step = (xHigh - xLow) / self._baseResolution
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if step == 0 or math.isnan(step):
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yield xLow
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else:
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for i in range(self._baseResolution + 1):
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yield xLow + step * i
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def _getCommonData(self, miscParams, src, tgt):
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return {}
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@abstractmethod
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def _calculatePoint(self, x, miscParams, src, tgt, commonData):
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raise NotImplementedError
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