104 lines
4.2 KiB
Python
104 lines
4.2 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 Time2DistanceGetter(SmoothPointGetter):
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def _getCommonData(self, miscParams, src, tgt):
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return {
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'maxSpeed': src.getMaxVelocity(),
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'mass': src.item.ship.getModifiedItemAttr('mass'),
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'agility': src.item.ship.getModifiedItemAttr('agility')}
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def _calculatePoint(self, x, miscParams, src, tgt, commonData):
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time = x
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maxSpeed = commonData['maxSpeed']
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mass = commonData['mass']
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agility = commonData['agility']
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# Definite integral of:
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# https://wiki.eveuniversity.org/Acceleration#Mathematics_and_formulae
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distance_t = maxSpeed * time + (maxSpeed * agility * mass * math.exp((-time * 1000000) / (agility * mass)) / 1000000)
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distance_0 = maxSpeed * 0 + (maxSpeed * agility * mass * math.exp((-0 * 1000000) / (agility * mass)) / 1000000)
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distance = distance_t - distance_0
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return distance
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class Time2SpeedGetter(SmoothPointGetter):
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def _getCommonData(self, miscParams, src, tgt):
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return {
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'maxSpeed': src.getMaxVelocity(),
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'mass': src.item.ship.getModifiedItemAttr('mass'),
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'agility': src.item.ship.getModifiedItemAttr('agility')}
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def _calculatePoint(self, x, miscParams, src, tgt, commonData):
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time = x
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maxSpeed = commonData['maxSpeed']
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mass = commonData['mass']
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agility = commonData['agility']
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# https://wiki.eveuniversity.org/Acceleration#Mathematics_and_formulae
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speed = maxSpeed * (1 - math.exp((-time * 1000000) / (agility * mass)))
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return speed
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class Time2MomentumGetter(Time2SpeedGetter):
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def _calculatePoint(self, x, miscParams, src, tgt, commonData):
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mass = commonData['mass']
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speed = Time2SpeedGetter._calculatePoint(
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self, x=x, miscParams=miscParams,
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src=src, tgt=tgt, commonData=commonData)
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momentum = speed * mass
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return momentum
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class Time2BumpSpeedGetter(Time2SpeedGetter):
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def _calculatePoint(self, x, miscParams, src, tgt, commonData):
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# S. Santorine, Ship Motion in EVE-Online, p3, Collisions & Bumping section
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# https://docs.google.com/document/d/1rwVWjTvzVdPEFETf0vwm649AFb4bgRBaNLpRPaoB03o
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# Internally, Santorine's formulas are using millions of kilograms, so we normalize to them here
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bumperMass = commonData['mass'] / 10 ** 6
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bumperSpeed = Time2SpeedGetter._calculatePoint(
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self, x=x, miscParams=miscParams,
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src=src, tgt=tgt, commonData=commonData)
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tgtMass = miscParams['tgtMass'] / 10 ** 6
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tgtSpeed = (2 * bumperSpeed * bumperMass) / (bumperMass + tgtMass)
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return tgtSpeed
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class Time2BumpDistanceGetter(Time2BumpSpeedGetter):
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def _calculatePoint(self, x, miscParams, src, tgt, commonData):
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# S. Santorine, Ship Motion in EVE-Online, p3, Collisions & Bumping section
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# https://docs.google.com/document/d/1rwVWjTvzVdPEFETf0vwm649AFb4bgRBaNLpRPaoB03o
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# Internally, Santorine's formulas are using millions of kilograms, so we normalize to them here
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tgtMass = miscParams['tgtMass'] / 10 ** 6
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tgtInertia = miscParams['tgtInertia']
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tgtSpeed = Time2BumpSpeedGetter._calculatePoint(
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self, x=x, miscParams=miscParams,
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src=src, tgt=tgt, commonData=commonData)
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tgtDistance = tgtSpeed * tgtMass * tgtInertia
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return tgtDistance
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