File size: 6,812 Bytes
a5ffdcd | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 | /*******************************************************************************
*
This file is part of the LibreCAD project, a 2D CAD program
Copyright (C) 2024 LibreCAD.org
Copyright (C) 2024 sand1024
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
******************************************************************************/
#include "lc_convert.h"
#include <QRegularExpression>
#include "rs_math.h"
#include "lc_linemath.h"
#include "rs_debug.h"
#include "rs_settings.h"
#include "rs_units.h"
// fixme - sand - review the entire codebase and insure uniform string/double and vice-versa conversion
QString LC_Convert::asString(double value, int precision){
if (LC_LineMath::isNotMeaningful(value)){
value = 0.0;
}
return QString::number(value, 'g', precision);
}
QString LC_Convert::asStringAngle(double value, int precision){
if (!LC_LineMath::isMeaningfulAngle(value)){
value = 0.0;
}
return QString::number(value, 'g', precision);
}
QString LC_Convert::asStringAngleDeg(double value, int precision){
if (!LC_LineMath::isMeaningfulAngle(value)){
value = 0.0;
}
double angleDeg = RS_Math::rad2deg(value);
return QString::number(angleDeg, 'g', precision);
}
/**
* Just utility method for conversion of provided string to double value.
* @param strValue string that represents value
* @param res result of conversion
* @param notMeaningful value that should be returned if given string denotes non-meaningful value (less than tolerance)
* @param positiveOnly if true, positive value (via std::abs()) will be always returned, false - otherwise.
* @return true if string was converted without errors
*/
bool LC_Convert::toDouble(const QString& strValue, double &res, double notMeaningful, bool positiveOnly){
bool ok = false;
double x = RS_Math::eval(strValue, &ok);
if(ok){
res = LC_LineMath::getMeaningful(x, notMeaningful);
if (positiveOnly){
res = std::abs(res);
}
}
return ok;
}
/**
* Just utility method for conversion of provided string to double value, given that double is for angle
* @param strValue string that represents value
* @param res result of conversion
* @param notMeaningful value that should be returned if given string denotes non-meaningful value (less than tolerance)
* @param positiveOnly if true, positive value (via std::abs()) will be always returned, false - otherwise.
* @return true if string was converted without errors
*/
bool LC_Convert::toDoubleAngleRad(const QString& strValue, double &res, double notMeaningful, bool positiveOnly){
double radValue;
bool result = parseToToDoubleAngleDegrees(strValue, radValue, notMeaningful, positiveOnly);
if (result){
res = RS_Math::deg2rad(radValue);
}
return result;
}
bool LC_Convert::parseToToDoubleAngleDegrees(const QString& strValue, double &res, double notMeaningful, bool positiveOnly){
bool ok = false;
bool doNotAllowNonDecimalAnglesInput = LC_GET_ONE_BOOL("CADPreferences", "InputAnglesAsDecimalsOnly", false);
double angleDegrees;
if (doNotAllowNonDecimalAnglesInput){
angleDegrees = RS_Math::eval(strValue, &ok);
}
else{
QString stringToEval = RS_Units::replaceAllPotentialAnglesByDecimalDegrees(strValue, &ok);
angleDegrees = RS_Math::eval(stringToEval, &ok);
}
if(ok){
res = LC_LineMath::getMeaningfulAngle(angleDegrees, notMeaningful);
if (positiveOnly){
res = std::abs(res);
}
}
return ok;
}
/**
* @{description} Update a length string to support fraction
* (1 1/2") to (1+1/2")
* (1"1/2) to (1+1/2")
*/
QString LC_Convert::updateForFraction(QString input) {
// if the expression is already valid, bypass fraction processing
bool okay = false;
double value = RS_Math::eval(input, &okay);
if (okay)
return QString{}.setNum(value, 'g', 10);
// support fraction at the end: (1'1/2) => (1 1/2')
QRegularExpression rx{R"((\D*)([\d]+)\s*(['"])([\d]+)/([\d]+)\s*$)"};
QRegularExpressionMatch match = rx.match(input);
if (match.hasMatch()) {
qsizetype pos = match.capturedStart();
input = input.left(pos) + match.captured(1) + match.captured(2) + " " + match.captured(4) + "/" +
match.captured(5) + match.captured(3);
}
std::vector<std::tuple<QRegularExpression, int, int>> regexps{
{{QRegularExpression{R"((\D*)([\d]+)\s+([\d]+)/([\d]+)\s*([\D$]))"},3, 5},
{QRegularExpression{R"((\D*)([\d]+)\s+([\d]+)/([\d]+)\s*(['"]))"},3, 5},
{QRegularExpression{R"((\D*)\s*([\d]+)/([\d]+)\s*([\D$]))"},2, 4},}};
LC_LOG << "input=" << input;
for (auto &[rx, index, tailI]: regexps)
input = evaluateFraction(input, rx, index, tailI).replace(QRegularExpression(R"(\s+)"), QString{});
LC_LOG << "eval: " << input;
return input;
}
QString LC_Convert::evaluateFraction(QString input, QRegularExpression rx, int index, int tailI) {
QString copy = input;
QString tail = QString{R"(\)"} + QString::number(tailI);
QRegularExpressionMatch match = rx.match(copy);
if (match.hasMatch()) {
qsizetype pos = match.capturedStart();
LC_ERR << "Evaluate: " << copy;
QString formula = ((index != 2) ? match.captured(2) + "+" : QString{}) + match.captured(index) + "/" +
match.captured(index + 1);
LC_ERR << "formula=" << formula;
QString value = QString{}.setNum(RS_Math::eval(formula), 'g', 10);
LC_ERR << "formula=" << formula << ": value=" << value;
return input.left(pos)
+ input.mid(pos, match.capturedLength()).replace(rx, R"( \1)" + value + tail)
+ evaluateFraction(input.right(input.size() - pos - match.capturedLength()), rx, index, tailI);
}
return input;
}
double LC_Convert::evalAngleValue(const QString &angleStr, bool &ok2) {
double angleDegrees;
ok2 = parseToToDoubleAngleDegrees(angleStr, angleDegrees, 0.0, false);
return angleDegrees;
}
|