Eigen::Vector3d getSubPx(const cv::Mat & M, const double x, const double y)
{
const int nx_lo = intFloor(x);
const int nx_hi = nx_lo + 1;
const double x_lo = (double) nx_lo;
double dWeightHi = x - x_lo;
double dWeightLo = 1 - dWeightHi;
if(IS_DEBUG) CHECK(dWeightHi < 0 || dWeightHi > 1, "Weight OOB");
if(IS_DEBUG) CHECK(dWeightLo < 0 || dWeightLo > 1, "Weight OOB");
return dWeightLo * getSubPx_intx(M, nx_lo, y) + dWeightHi * getSubPx_intx(M, nx_hi, y);
}
Eigen::Vector3d getSubPx_intx(const cv::Mat & M, const int nx, const double y)
{
const int ny_lo = intFloor(y);
const int ny_hi = ny_lo + 1;
const double y_lo = (double) ny_lo;
if(IS_DEBUG) CHECK(y_lo > y, "floor failed");
double dWeightHi = y - y_lo;
double dWeightLo = 1 - dWeightHi;
if(IS_DEBUG) CHECK(dWeightHi < 0 || dWeightHi > 1, "Weight OOB");
if(IS_DEBUG) CHECK(dWeightLo < 0 || dWeightLo > 1, "Weight OOB");
return dWeightLo * getPx(M, nx, ny_lo) + dWeightHi * getPx(M, nx, ny_hi);
}
void VibratoTimeAxis::paintEvent( QPaintEvent * )
{
beginDrawing(false);
fillBackground(colorGroup().background());
doUpdate();
if (currentChunkToUse >= 0) {
QFontMetrics fm = p.fontMetrics();
QString s;
p.setBrush(Qt::black);
p.setFont(QFont("AnyStyle", 12));
int polyLengthInPixels = toInt((endChunkToUse - startChunkToUse) * zoomFactorX);
float pixelsPerSecond = polyLengthInPixels / noteLengthToUse;
int notchesDivider = 2;
double secondsPerNotch = 5;
int calculationStep = 1;
// Calculate which notches and labels to draw
for (int pixelsPerSecondThreshold = 25; ;pixelsPerSecondThreshold *= 2) {
if (pixelsPerSecond < pixelsPerSecondThreshold) {
break;
} else {
switch (calculationStep) {
case 1:
notchesDivider = 5;
secondsPerNotch /= 5;
calculationStep = 2;
break;
case 2:
notchesDivider = 2;
secondsPerNotch = secondsPerNotch;
calculationStep = 3;
break;
case 3:
notchesDivider = 2;
secondsPerNotch /= 2;
calculationStep = 1;
break;
}
}
}
// Draw the notches + labels
for (int i = 0; i < (noteLengthToUse / secondsPerNotch); i++) {
int x = toInt((((endChunkToUse - startChunkToUse) * zoomFactorX) / noteLengthToUse) * i * secondsPerNotch - windowOffsetToUse);
if ((x >= 0) && (x < width())) {
if (i % notchesDivider == 0) { // Even: bigger notch + label
p.drawLine(x, height()-6, x, height()-1);
// The 1.000001 factors in the following statements prevent freaky rounding/floor errors...
int minutes = intFloor(i*secondsPerNotch*1.000001) / 60;
int seconds = intFloor(i*secondsPerNotch*1.000001) % 60;
int thousandthseconds = intFloor(1000*i*secondsPerNotch*1.000001) % 1000;
if (thousandthseconds == 0) { // Label: m:ss
s.sprintf("%1d:%02d", minutes, seconds);
} else if (thousandthseconds % 100 == 0) { // Label: m:ss.h
s.sprintf("%1d:%02d.%01d", minutes, seconds, thousandthseconds / 100);
} else if (thousandthseconds % 10 == 0) { // Label: m:ss.hh
s.sprintf("%1d:%02d.%02d", minutes, seconds, thousandthseconds / 10);
} else { // Label: m:ss.hhh
s.sprintf("%1d:%02d.%03d", minutes, seconds, thousandthseconds);
}
p.drawText(x - fm.width(s)/2, 12, s);
} else { // Odd: smaller notch
p.drawLine(x, height()-3, x, height()-1);
}
}
}
// Draw the horizontal line at the bottom of the axis
p.drawLine(0, height()-1, width(), height()-1);
}
endDrawing();
}