void DrawWidget::drawChannel(QPaintDevice &pd, Channel *ch, QPainter &p, double leftTime, double currentTime, double zoomX, double viewBottom, double zoomY, int viewType)
{
ZoomLookup *z;
if(viewType == DRAW_VIEW_SUMMARY) z = &ch->summaryZoomLookup;
else z = &ch->normalZoomLookup;
ChannelLocker channelLocker(ch);
QColor current = ch->color;
QColor invert(255 - current.red(), 255 - current.green(), 255 - current.blue());
p.setPen(current);
int viewBottomOffset = toInt(viewBottom / zoomY);
printf("viewBottomOffset=%d, %f, %f\n", viewBottomOffset, viewBottom, zoomY);
viewBottom = double(viewBottomOffset) * zoomY;
// baseX is the no. of chunks a pixel must represent.
double baseX = zoomX / ch->timePerChunk();
z->setZoomLevel(baseX);
double currentChunk = ch->chunkFractionAtTime(currentTime);
double leftFrameTime = currentChunk - ((currentTime - leftTime) / ch->timePerChunk());
//double leftFrameTime = leftTime / ch->timePerChunk();
double frameTime = leftFrameTime;
//if(frameTime < 0.0) frameTime = 0.0;
int n = 0;
int baseElement = int(floor(frameTime / baseX));
if(baseElement < 0) { n -= baseElement; baseElement = 0; }
int lastBaseElement = int(floor(double(ch->totalChunks()) / baseX));
Q3PointArray pointArray(pd.width()*2);
//QPointArray topPoints(width()*2);
//QPointArray bottomPoints(width()*2);
//int pointIndex = 0;
//int pointIndex = 0;
if (baseX > 1) { // More samples than pixels
int theWidth = pd.width();
//if(baseElement + theWidth > z->size()) z->setSize(baseElement + theWidth);
if(lastBaseElement > z->size()) z->setSize(lastBaseElement);
for(; n < theWidth && baseElement < lastBaseElement; n++, baseElement++) {
myassert(baseElement >= 0);
ZoomElement &ze = z->at(baseElement);
if(!ze.isValid()) {
if(calcZoomElement(ch, ze, baseElement, baseX)) continue;
}
if(ze.high() != 0.0f && ze.high() - ze.low() < 1.0) { //if range is closer than one semi-tone then draw a line between them
//if(ze.noteLow > 0) {
p.setPen(ze.color());
//p.setPen(QPen(ze.color(), lineWidth));
//Note: lineTo doen't draw a pixel on the last point of the line
p.drawLine(n, pd.height() - lineTopHalfWidth - toInt(ze.high() / zoomY) + viewBottomOffset, n, pd.height() + lineBottomHalfWidth - toInt(ze.low() / zoomY) + viewBottomOffset);
//pointArray.setPoint(pointIndex++, n, height() - lineTopHalfWidth - toInt(ze.high / zoomY) + viewBottomOffset);
//pointArray.setPoint(pointIndex++, n, height() + lineBottomHalfWidth - toInt(ze.low / zoomY) + viewBottomOffset);
}
}
//myassert(pointIndex <= width()*2);
//p.setPen(ch->color);
//p.drawLineSegments(pointArray, 0, pointIndex/2);
} else { // More pixels than samples
float err = 0.0, pitch = 0.0, prevPitch = 0.0, vol;
int intChunk = (int) floor(frameTime); // Integer version of frame time
if(intChunk < 0) intChunk = 0;
double stepSize = 1.0 / baseX; // So we skip some pixels
int x = 0, y;
//double start = 0 - stepSize;
double start = (double(intChunk) - frameTime) * stepSize;
double stop = pd.width() + (2 * stepSize);
int squareSize = (int(sqrt(stepSize)) / 2) * 2 + 1; //make it an odd number
int halfSquareSize = squareSize/2;
int penX=0, penY=0;
//topPoints.setPoint(pointIndex, toInt(start), 0);
//bottomPoints.setPoint(pointIndex++, toInt(start), height());
for (double n = start; n < stop && intChunk < (int)ch->totalChunks(); n += stepSize, intChunk++) {
myassert(intChunk >= 0);
//if (intChunk < 0) continue; // So we don't go off the beginning of the array
AnalysisData *data = ch->dataAtChunk(intChunk);
err = data->getCorrelation();
//vol = dB2ViewVal(data->logrms(), ch->rmsCeiling, ch->rmsFloor);
vol = dB2Normalised(data->getLogRms(), ch->rmsCeiling, ch->rmsFloor);
//if (err >= CERTAIN_THRESHOLD) {
//float val = MIN(ch->dataAtChunk(intChunk)->volumeValue, 1.0);
if(gdata->pitchContourMode() == 0)
//p.setPen(QPen(colorBetween(colorGroup().background(), ch->color, err*2.0-1.0), lineWidth));
//p.setPen(QPen(colorBetween(gdata->backgroundColor(), ch->color, err*sqrt(data->rms)*10.0), lineWidth));
if(viewType == DRAW_VIEW_PRINT)
p.setPen(QPen(colorBetween(QColor(255, 255, 255), ch->color, err*vol), lineWidth));
else
p.setPen(QPen(colorBetween(gdata->backgroundColor(), ch->color, err*vol), lineWidth));
else
p.setPen(QPen(ch->color, lineWidth));
x = toInt(n);
//note = (data->isValid()) ? data->note : 0.0f;
//note = (ch->isVisibleNote(data->noteIndex)) ? data->note : 0.0f;
pitch = (ch->isVisibleChunk(data)) ? data->getPitch() : 0.0f;
myassert(pitch >= 0.0 && pitch <= gdata->topPitch());
//pitch = bound(pitch, 0, gdata->topPitch());
y = pd.height() - 1 - toInt(pitch / zoomY) + viewBottomOffset;
//y = height() - 1 - int((note / zoomY) - (viewBottom / zoomY));
if(pitch > 0.0f) {
if(fabs(prevPitch - pitch) < 1.0 && n != start) { //if closer than one semi-tone from previous then draw a line between them
//p.lineTo(x, y);
p.drawLine(penX, penY, x, y);
penX = x; penY = y;
} else {
p.drawPoint(x, y);
//p.moveTo(x, y);
penX = x; penY = y;
}
if(stepSize > 10) { //draw squares on the data points
//p.setPen(invert);
p.setBrush(Qt::NoBrush);
p.drawRect(x - halfSquareSize, y - halfSquareSize, squareSize, squareSize);
//p.setPen(QPen(current, 2));
}
//} else {
// p.moveTo(x, height()-1-int(((note-viewBottom) / zoomY)));
//}
}
prevPitch = pitch;
}
}
}
void CorrelationWidget::paintEvent( QPaintEvent * )
{
Channel *active = gdata->getActiveChannel();
AnalysisData *data = NULL;
int chunk=0;
double dh2 = double(height()-1) / 2.0;
int j, x, y;
beginDrawing(false);
if(active) {
active->lock();
chunk = active->currentChunk();
data = active->dataAtChunk(chunk);
//int centerX = width() / 2;
if(data) {
double freq = data->getFundamentalFreq();
double period = double(active->rate()) / freq;
//double numPeriods = double(active->size()) / period;
double scaleX = period * double(width()) / double(active->nsdfData.size()); //pixels per period
//draw alternating background color indicating period
if(gdata->view->backgroundShading() && period > 4.0 && period < double(active->nsdfData.size())) {
int n = int(ceil(double(width()) / scaleX)); //number of colored patches
p.setPen(Qt::NoPen);
QColor color1 = colorBetween(gdata->backgroundColor(), gdata->shading1Color(), data->getCorrelation());
QColor color2 = colorBetween(gdata->backgroundColor(), gdata->shading2Color(), data->getCorrelation());
for(j = 0; j<n; j++) {
x = toInt(scaleX*double(j));
p.setBrush((j%2) ? color1 : color2);
p.drawRect(x, 0, toInt(scaleX*double(j+1)) - toInt(scaleX*double(j)), height());
}
p.setPen(colorBetween(gdata->backgroundColor(), Qt::black, 0.3 * data->getCorrelation()));
for(j = 0; j<n; j++) {
x = toInt(scaleX*double(j));
p.drawLine(x, 0, x, height());
}
} else {
clearBackground();
}
QString numPeriodsText;
numPeriodsText.sprintf("Period = %lf", period);
p.setPen(Qt::black);
p.drawText(5, height() - 8, numPeriodsText);
} else {
clearBackground();
}
} else {
clearBackground();
}
//draw the horizontal center line
p.setPen(QPen(colorBetween(colorGroup().background(), Qt::black, 0.3), 0));
p.drawLine(0, toInt(dh2), width(), toInt(dh2));
if(active) {
if(gdata->doingFreqAnalysis()) {
int w = width() / 2; //only do every second pixel (for speed)
//draw the waveform
if(int(pointArray.size()) != w) pointArray.resize(w);
if(lookup.size() != w) lookup.resize(w);
NoteData *currentNote = active->getCurrentNote();
Array1d<float> *input = &(active->nsdfData);
if(currentNote) {
if(aggregateMode == 1) input = ¤tNote->nsdfAggregateData;
else if(aggregateMode == 2) input = ¤tNote->nsdfAggregateDataScaled;
}
//bresenham1d(*input, lookup);
maxAbsDecimate1d(*input, lookup);
for(int j=0; j<w; j++) {
pointArray.setPoint(j, j*2, toInt(dh2 - lookup[j]*dh2));
}
p.setPen(QPen(active->color, 0));
p.drawPolyline(pointArray);
}
if(data && (aggregateMode == 0)) {
double ratio = double(width()) / double(active->nsdfData.size()); //pixels per index
//float highest = active->nsdfData.at(data->highestCorrelationIndex);
//float chosen = active->nsdfData.at(data->chosenCorrelationIndex);
//draw a dot at all the period estimates
p.setPen(Qt::blue);
p.setBrush(Qt::blue);
for(j=0; j<int(data->getPeriodEstimatesSize()); j++) {
x = toInt(double(data->getPeriodEstimatesAt(j)) * ratio);
y = toInt(dh2 - data->getPeriodEstimatesAmpAt(j) * dh2);
p.drawEllipse(x-2, y-2, 5, 5);
}
if(data->getHighestCorrelationIndex() >= 0) {
float highest = data->getPeriodEstimatesAmpAt(data->getHighestCorrelationIndex());
//draw threshold line
p.setPen(QPen(colorBetween(colorGroup().background(), Qt::black, 0.3), 0));
y = toInt(dh2 - (highest * active->threshold()) * dh2);
p.drawLine(0, y, width(), y);
//draw a dot at the highest correlation period
p.setPen(Qt::black);
p.setBrush(Qt::black);
//x = toInt(double(data->highestCorrelationIndex) * ratio);
x = toInt(double(data->getPeriodEstimatesAt(data->getHighestCorrelationIndex())) * ratio);
y = toInt(dh2 - highest * dh2);
p.drawEllipse(x-2, y-2, 5, 5);
}
//draw a dot at the chosen correlation period
if(data->getChosenCorrelationIndex() >= 0) {
p.setPen(Qt::red);
p.setBrush(Qt::red);
//x = toInt(double(data->chosenCorrelationIndex) * ratio);
//y = toInt(dh2 - chosen * dh2);
x = toInt(double(data->getPeriodEstimatesAt(data->getChosenCorrelationIndex())) * ratio);
y = toInt(dh2 - data->getPeriodEstimatesAmpAt(data->getChosenCorrelationIndex()) * dh2);
p.drawEllipse(x-2, y-2, 5, 5);
}
//draw a line at the chosen correlation period
if(data->getChosenCorrelationIndex() >= 0) {
p.setPen(Qt::green);
p.setBrush(Qt::green);
//x = toInt(double(data->periodOctaveEstimate) * ratio);
x = toInt(double(active->periodOctaveEstimate(chunk)) * ratio);
p.drawLine(x, 0, x, height());
}
}
active->unlock();
}
endDrawing();
}