98 lines
3.9 KiB
Python
98 lines
3.9 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 graphs.data.base import SmoothPointGetter
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class Time2ShieldAmountGetter(SmoothPointGetter):
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def _getCommonData(self, miscParams, src, tgt):
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return {
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'maxShieldAmount': src.item.ship.getModifiedItemAttr('shieldCapacity'),
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'shieldRegenTime': src.item.ship.getModifiedItemAttr('shieldRechargeRate') / 1000}
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def _calculatePoint(self, x, miscParams, src, tgt, commonData):
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time = x
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shieldAmount = calculateShieldAmount(
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maxShieldAmount=commonData['maxShieldAmount'],
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shieldRegenTime=commonData['shieldRegenTime'],
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shieldAmountT0=miscParams['shieldAmountT0'] or 0,
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time=time)
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return shieldAmount
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class Time2ShieldRegenGetter(SmoothPointGetter):
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def _getCommonData(self, miscParams, src, tgt):
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return {
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'maxShieldAmount': src.item.ship.getModifiedItemAttr('shieldCapacity'),
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'shieldRegenTime': src.item.ship.getModifiedItemAttr('shieldRechargeRate') / 1000}
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def _calculatePoint(self, x, miscParams, src, tgt, commonData):
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time = x
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shieldAmount = calculateShieldAmount(
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maxShieldAmount=commonData['maxShieldAmount'],
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shieldRegenTime=commonData['shieldRegenTime'],
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shieldAmountT0=miscParams['shieldAmountT0'] or 0,
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time=time)
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shieldRegen = calculateShieldRegen(
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maxShieldAmount=commonData['maxShieldAmount'],
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shieldRegenTime=commonData['shieldRegenTime'],
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currentShieldAmount=shieldAmount)
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return shieldRegen
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# Useless, but valid combination of x and y
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class ShieldAmount2ShieldAmountGetter(SmoothPointGetter):
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def _calculatePoint(self, x, miscParams, src, tgt, commonData):
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shieldAmount = x
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return shieldAmount
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class ShieldAmount2ShieldRegenGetter(SmoothPointGetter):
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def _getCommonData(self, miscParams, src, tgt):
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return {
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'maxShieldAmount': src.item.ship.getModifiedItemAttr('shieldCapacity'),
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'shieldRegenTime': src.item.ship.getModifiedItemAttr('shieldRechargeRate') / 1000}
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def _calculatePoint(self, x, miscParams, src, tgt, commonData):
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shieldAmount = x
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shieldRegen = calculateShieldRegen(
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maxShieldAmount=commonData['maxShieldAmount'],
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shieldRegenTime=commonData['shieldRegenTime'],
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currentShieldAmount=shieldAmount)
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return shieldRegen
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def calculateShieldAmount(maxShieldAmount, shieldRegenTime, shieldAmountT0, time):
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# The same formula as for cap
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# https://wiki.eveuniversity.org/Capacitor#Capacitor_recharge_rate
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return maxShieldAmount * (1 + math.exp(5 * -time / shieldRegenTime) * (math.sqrt(shieldAmountT0 / maxShieldAmount) - 1)) ** 2
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def calculateShieldRegen(maxShieldAmount, shieldRegenTime, currentShieldAmount):
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# The same formula as for cap
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# https://wiki.eveuniversity.org/Capacitor#Capacitor_recharge_rate
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return 10 * maxShieldAmount / shieldRegenTime * (math.sqrt(currentShieldAmount / maxShieldAmount) - currentShieldAmount / maxShieldAmount)
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