void PowerLawWidgetManager::loadFromXml(TiXmlElement *_root) {
std::vector < PowerLawWidget * > widgets;
double valFactor, valExponent, valOffset, valMin, valMax;
for (auto child = _root->FirstChildElement("PowerLawParameters"); child; child = child->NextSiblingElement()) {
auto r0 = child->QueryDoubleAttribute("factor", &valFactor);
auto r1 = child->QueryDoubleAttribute("exponent", &valExponent);
auto r2 = child->QueryDoubleAttribute("offset", &valOffset);
auto r3 = child->QueryDoubleAttribute("rangeMin", &valMin);
auto r4 = child->QueryDoubleAttribute("rangeMax", &valMax);
if (r0 == TIXML_SUCCESS && r1 == TIXML_SUCCESS && r2 == TIXML_SUCCESS && r3 == TIXML_SUCCESS &&
r4 == TIXML_SUCCESS) {
auto w = new PowerLawWidget();
w->setFactor(valFactor);
w->setExponent(valExponent);
w->setOffset(valOffset);
w->setMin(valMin);
w->setMax(valMax);
widgets.push_back(w);
} else {
QMessageBox::warning(0, "failed to load power laws", "could not load power laws: invalid file structure.");
return;
}
}
setPowerLawWidgets(widgets);
}
int TiXmlElement::QueryFloatAttribute( const char* name, float* dval ) const
{
double dummy(static_cast<double>(*dval));
int retVal = QueryDoubleAttribute(name, &dummy);
*dval = static_cast<float>(dummy);
return retVal;
}
