void CalcRepl::write() {
if (outStack.empty() && midStack.empty()) {
// Nothing
} else {
CalcData result = finishByData();
// If not NaN, find near value
if (result == result) {
CalcNearData nearresult = fnear(result);
// Find x ~= result
const auto found1 = NearValue.find(nearresult);
if (found1 != NearValue.end()) {
(*out)<<" ~ "<<found1->second<<endl;
} else {
// Find x ~= -result
const auto found2 = NearValue.find(-nearresult);
if (found2 != NearValue.end()) {
(*out)<<" ~ "<<"- ("<<found2->second<<")"<<endl;
} else {
// Find any ~= result
if (nearresult != (CalcNearData)result) {
(*out)<<" ~ "<<nearresult<<endl;
}
}
}
}
(*out)<<" = "<<result<<endl;
(*out).flush();
}
}
void Orbit::initAP(double sgp, FGDoubleVector &apogee, FGDoubleVector &perigee)
{
// we need eccentricity, semomajor axis, and angle. All are pretty easy to get
// when you know the apogee, perigee, and a focus.
// sanity check: The apogee and perigee have to be in line with the focus (0,0).
// we'll just check the angles and their difference
double angleDiff = FGDoubleGeometry::angleDiff(apogee.getAngle(), perigee.getAngle());
angleDiff = fabs(angleDiff);
if ( !fnear(angleDiff, PI, 0.01) )
{
// not close enough to opposition.
m_bValid = false;
return;
}
// pretty straight forward, and we'll need them in a minute.
m_apogee = apogee.getLength();
m_perigee = perigee.getLength();
// the semimajor axis is just half the distance from perigee to apogee.
m_a = (m_apogee + m_perigee)/2.0;
// w is the angle from f1 to apogee.
m_w = apogee.getAngle();
// and e is defined as (a-p)/(a+p) where a and p are apogee and perigee distances
m_e = (m_apogee-m_perigee)/(m_apogee+m_perigee);
// we now have the criticals
init(sgp, m_e, m_a, m_w);
}
static inline bool ffar(const float x, const float y)
{
return !fnear(x,y);
}
void MainWindow::doRun(const QString &value)
{
try
{
// Do calculation
calc.parse(value.toStdString());
const OPParser::CalcData resultC = calc.finishByData();
const OPParser::CalcData resultCNear = fnear(resultC);
std::string resultS = value.toStdString();
// If not NaN, find near value
if (resultCNear == resultCNear)
{
// Find x ~= result
const auto found1 = OPParser::NearValue.find(resultCNear);
if (found1 != OPParser::NearValue.end())
{
resultS += "=" + found1->second;
}
else
{
// Find x ~= -result
const auto found2 = OPParser::NearValue.find(-resultCNear);
if (found2 != OPParser::NearValue.end())
{
resultS += "=-(" + found2->second + ")";
}
}
}
{
// Format result as string
std::ostringstream oss;
oss << resultCNear;
auto floatS = oss.str();
// Format exp
auto ePos = floatS.find("e");
if (ePos != std::string::npos)
{
floatS.replace(ePos, 1, " e^");
}
resultS += "=" + floatS;
}
// Generate MML
mml.parse(resultS);
const OPParser::MMLData resultM = mml.finishByData();
// Print
ui->statusBar->showMessage(QString(std::to_string(resultC).c_str()));
ui->frame->setContent(QString(resultM.c_str()));
// Scale the font size to fit in
ui->frame->setBaseFontPointSize(16);
while (
(
ui->frame->getSize().width() > ui->frame->width()
||
ui->frame->getSize().height() > ui->frame->height()
)
&&
ui->frame->baseFontPointSize() > 8
)
{
ui->frame->setBaseFontPointSize(ui->frame->baseFontPointSize() - 1);
}
}
catch (const OPParser::opparser_error &e)
{
ui->statusBar->showMessage(QString(e.what()));
calc.init();
mml.init();
}
}
