91 lines
3.2 KiB
Python
91 lines
3.2 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 .base import FitGraph, XDef, YDef, Input
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class FitMobilityVsTimeGraph(FitGraph):
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name = 'Mobility'
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def __init__(self):
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super().__init__()
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# UI stuff
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@property
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def xDefs(self):
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return [XDef(handle='time', unit='s', label='Time', mainInput=('time', 's'))]
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@property
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def yDefs(self):
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return [
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YDef(handle='speed', unit='m/s', label='Speed'),
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YDef(handle='distance', unit='km', label='Distance')]
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@property
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def inputs(self):
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return [Input(handle='time', unit='s', label='Time', iconID=1392, defaultValue=10, defaultRange=(0, 30), mainOnly=False)]
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@property
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def xDef(self):
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return XDef(inputDefault='0-80', inputLabel='Time (seconds)', inputIconID=1392, axisLabel='Time, s')
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# Calculation stuff
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_denormalizers = {
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('distance', 'km'): lambda v, fit, tgt: v / 1000}
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def _time2speed(self, mainInput, miscInputs, fit, tgt):
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xs = []
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ys = []
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maxSpeed = fit.ship.getModifiedItemAttr('maxVelocity')
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mass = fit.ship.getModifiedItemAttr('mass')
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agility = fit.ship.getModifiedItemAttr('agility')
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for time in self._iterLinear(mainInput[1]):
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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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xs.append(time)
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ys.append(speed)
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return xs, ys
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def _time2distance(self, mainInput, miscInputs, fit, tgt):
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xs = []
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ys = []
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maxSpeed = fit.ship.getModifiedItemAttr('maxVelocity')
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mass = fit.ship.getModifiedItemAttr('mass')
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agility = fit.ship.getModifiedItemAttr('agility')
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for time in self._iterLinear(mainInput[1]):
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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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xs.append(time)
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ys.append(distance)
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return xs, ys
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_getters = {
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('time', 'speed'): _time2speed,
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('time', 'distance'): _time2distance}
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FitMobilityVsTimeGraph.register()
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