void GridClassifier::populateHistogramBins (const QImage &image,
const Transformation &transformation,
double xMin,
double xMax,
double yMin,
double yMax)
{
LOG4CPP_INFO_S ((*mainCat)) << "GridClassifier::populateHistogramBins";
ColorFilter filter;
QRgb rgbBackground = filter.marginColor (&image);
for (int x = 0; x < image.width(); x++) {
for (int y = 0; y < image.height(); y++) {
QColor pixel = image.pixel (x, y);
// Skip pixels with background color
if (!filter.colorCompare (rgbBackground,
pixel.rgb ())) {
// Add this pixel to histograms
QPointF posGraph;
transformation.transformScreenToRawGraph (QPointF (x, y), posGraph);
if (transformation.modelCoords().coordsType() == COORDS_TYPE_POLAR) {
// If out of the 0 to period range, the theta value must shifted by the period to get into that range
while (posGraph.x() < xMin) {
posGraph.setX (posGraph.x() + transformation.modelCoords().thetaPeriod());
}
while (posGraph.x() > xMax) {
posGraph.setX (posGraph.x() - transformation.modelCoords().thetaPeriod());
}
}
int binX = binFromCoordinate (posGraph.x(), xMin, xMax);
int binY = binFromCoordinate (posGraph.y(), yMin, yMax);
ENGAUGE_ASSERT (0 <= binX);
ENGAUGE_ASSERT (0 <= binY);
ENGAUGE_ASSERT (binX < m_numHistogramBins);
ENGAUGE_ASSERT (binY < m_numHistogramBins);
// Roundoff error in log scaling may let bin go just outside legal range
binX = qMin (binX, m_numHistogramBins - 1);
binY = qMin (binY, m_numHistogramBins - 1);
++m_binsX [binX];
++m_binsY [binY];
}
}
}
}
QRgb DlgSettingsColorFilter::createThread ()
{
LOG4CPP_INFO_S ((*mainCat)) << "DlgSettingsColorFilter::createThread";
// Get background color
QImage image = cmdMediator().document().pixmap().toImage();
ColorFilter filter;
QRgb rgbBackground = filter.marginColor(&image);
// Only create thread once
if (m_filterThread == 0) {
m_filterThread = new DlgFilterThread (cmdMediator().document().pixmap(),
rgbBackground,
*this);
m_filterThread->start(); // Now that thread is started, we can use signalApplyFilter
}
return rgbBackground;
}
