void Document::initializeGridDisplay (const Transformation &transformation)
{
LOG4CPP_INFO_S ((*mainCat)) << "Document::initializeGridDisplay";
ENGAUGE_ASSERT (!m_coordSystemContext.modelGridDisplay().stable());
// Get graph coordinate bounds
CallbackBoundingRects ftor (m_documentAxesPointsRequired,
transformation);
Functor2wRet<const QString &, const Point &, CallbackSearchReturn> ftorWithCallback = functor_ret (ftor,
&CallbackBoundingRects::callback);
iterateThroughCurvePointsAxes (ftorWithCallback);
// Initialize. Note that if there are no graph points then these next steps have no effect
bool isEmpty;
QPointF boundingRectGraphMin = ftor.boundingRectGraphMin (isEmpty);
QPointF boundingRectGraphMax = ftor.boundingRectGraphMax (isEmpty);
if (!isEmpty) {
GridInitializer gridInitializer;
DocumentModelGridDisplay modelGridDisplay = gridInitializer.initializeWithWidePolarCoverage (boundingRectGraphMin,
boundingRectGraphMax,
modelCoords(),
transformation,
m_pixmap.size ());
m_coordSystemContext.setModelGridDisplay (modelGridDisplay);
}
}
void DlgSettingsExportFormat::initializeIntervalConstraints ()
{
LOG4CPP_INFO_S ((*mainCat)) << "DlgSettingsExportFormat::initializeIntervalConstraints";
const int MAX_POINTS_ACROSS_RANGE = 1000;
// Get min and max of graph and screen coordinates
CallbackBoundingRects ftor (mainWindow().transformation());
Functor2wRet<const QString &, const Point &, CallbackSearchReturn> ftorWithCallback = functor_ret (ftor,
&CallbackBoundingRects::callback);
cmdMediator().iterateThroughCurvesPointsGraphs (ftorWithCallback);
// If there are no points, then interval will be zero. That special case must be handled downstream to prevent infinite loops
bool isEmpty;
double maxSizeGraph = qMax (ftor.boundingRectGraph(isEmpty).width(),
ftor.boundingRectGraph(isEmpty).height());
double maxSizeScreen = qMax (ftor.boundingRectScreen(isEmpty).width(),
ftor.boundingRectScreen(isEmpty).height());
m_minIntervalGraph = maxSizeGraph / MAX_POINTS_ACROSS_RANGE;
m_minIntervalScreen = maxSizeScreen / MAX_POINTS_ACROSS_RANGE;
}