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88 lines
2.3 KiB
C++
88 lines
2.3 KiB
C++
/* Copyright (C) 2013 VATSIM Community
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "blackmisc/pqunits.h"
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namespace BlackMisc
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{
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namespace PhysicalQuantities
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{
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/*
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* Convert to SI
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*/
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double CTemperatureUnit::conversionToSiConversionUnit(double value) const
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{
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double v = value + this->m_conversionOffsetToSi;
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v *= this->getConversionFactorToSI();
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return v;
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}
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/*
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* Convert from SI
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*/
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double CTemperatureUnit::conversionFromSiConversionUnit(double value) const
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{
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double v = value / this->getConversionFactorToSI();
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v -= this->m_conversionOffsetToSi;
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return v;
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}
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/*
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* Convert from SI
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*/
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double CAngleUnit::conversionSexagesimalFromSi(const CMeasurementUnit &angleUnit, double value)
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{
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// using rounding here, since fractions can lead to ugly sexagesimal conversion
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// e.g. 185.499999 gives 185 29' 59.9999"
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value = angleUnit.epsilonRounding(value * 180 / M_PI); // degree
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double v = floor(value);
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double c = value - v;
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double mr = c * 60.0;
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double m = floor(mr); // minutes
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double s = (mr - m) * 60; // seconds + rest fraction
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v = (v + (m / 100) + (s / 10000));
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return v;
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}
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/*
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* Convert to SI
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*/
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double CAngleUnit::conversionSexagesimalToSi(const CMeasurementUnit &, double value)
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{
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double v = floor(value); // degrees
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double c = value - v;
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c = c * 100.0;
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double m = floor(c);
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c = c - m;
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m /= 60.0; // minutes back to decimals
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double s = c / 36.0; // seconds back to decimals
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v = v + m + s;
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return v / 180.0 * M_PI;
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}
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/*
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* Rounded to QString
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*/
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QString CAngleUnit::toQStringRounded(double value, int digits) const
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{
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QString s;
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if ((*this) == CAngleUnit::sexagesimalDeg()) {
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// special formatting for sexagesimal degrees
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double de = floor(value);
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double mi = floor((value - de) * 100.0);
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double se = floor((value - de - mi / 100.0) * 1000000) / 100.0;
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QString ses = QLocale::system().toString(se, 'f', 2);
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s = QString::number(de).append(this->getUnitName()).append(QString::number(mi))
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.append("'").append(ses).append("\"");
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} else {
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s = CMeasurementUnit::toQStringRounded(value, digits);
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}
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return s;
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}
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} // namespace
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} // namespace
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