Quantity Constraint::getPresentationValue() const
{
Quantity quantity;
switch (Type) {
case Distance:
case Radius:
case DistanceX:
case DistanceY:
quantity.setValue(Value);
quantity.setUnit(Unit::Length);
break;
case Angle:
quantity.setValue(toDegrees<double>(Value));
quantity.setUnit(Unit::Angle);
break;
case SnellsLaw:
quantity.setValue(Value);
break;
default:
quantity.setValue(Value);
break;
}
QuantityFormat format = quantity.getFormat();
format.option = QuantityFormat::None;
format.format = QuantityFormat::Default;
format.precision = 6; // QString's default
quantity.setFormat(format);
return quantity;
}
QString UnitsSchemaImperialBuilding::schemaTranslate(const Quantity &quant, double &factor, QString &unitString)
{
// this schema expresses distances in feet + inches + fractions
// ex: 3'- 4 1/4" with proper rounding
Unit unit = quant.getUnit();
if (unit == Unit::Length) {
unitString = QString::fromLatin1("in");
factor = 25.4;
// Total number of inches to format
double totalInches = std::abs(quant.getValue())/factor;
// minimum denominator (8 for 1/8, 16 for 1/16, etc)
int minden;
// Outputs
int feet; // whole feet
int inches; // whole inches
int num,den; // numerator and denominator of fractional val
std::stringstream output; // output stream
// Intermediate values
int ntot; // total fractional units
int a,b,d; // used to compute greatest common denominator
int tmp; // temporary variable for GCD
// Get the current user specified minimum denominator
minden = quant.getFormat().getDenominator();
// Compute and round the total number of fractional units
ntot = (int)std::round(totalInches * (double)minden);
// If this is zero, nothing to do but return
if( ntot==0 )
return QString::fromLatin1("0");
// Compute the whole number of feet and remaining units
feet = (int)std::floor(ntot / (12*minden));
ntot = ntot - 12*minden*feet;
// Compute the remaining number of whole inches
inches = (int)std::floor(ntot/minden);
// Lastly the fractional quantities
num = ntot - inches*minden;
den = minden;
// If numerator is not zero, compute greatest common divisor and reduce
// fraction
if( num!=0 )
{
// initialize
a = num;
b = den;
while (b != 0)
{
tmp = a % b;
a = b;
b = tmp;
}
d = a;
num /= d;
den /= d;
}
// Process into string. Start with negative sign if quantity is less
// than zero
if( quant.getValue() < 0 )
output << "-";
// Print feet if we have any
if( feet!=0 )
{
output << feet << "'";
// if there is to be trailing numbers, add space
if( inches!=0 || num!=0 )
{
output << " ";
}
}
// Three cases:
// 1. Whole inches, no fraction
// 2. Whole inches, fraction
// 3. Fraction only
if( inches>0 && num==0 ) // case 1.
{
output << inches << "\"";
}
else if( inches>0 && num!=0 ) // case 2
{
output << inches << "+" << num << "/" << den << "\"";
}
else if( inches==0 && num!=0 ) // case 3
{
output << num << "/" << den << "\"";
}
// Done!
return QString::fromLatin1(output.str().c_str());
}
else if (unit == Unit::Area) {
unitString = QString::fromLatin1("sqft");
factor = 92903.04;
}
else if (unit == Unit::Volume) {
unitString = QString::fromLatin1("cuft");
factor = 28316846.592;
}
else if (unit == Unit::Velocity) {
unitString = QString::fromLatin1("in/min");
factor = 25.4/60;
}
else {
unitString = quant.getUnit().getString();
factor = 1.0;
}
return toLocale(quant, factor, unitString);
}