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spectrogram: Rotate view & draw first tile

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Mike Walters
2016-03-01 23:25:48 +00:00
parent caa2709ffc
commit 61d1fde23d
1 changed files with 8 additions and 7 deletions
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15
spectrogramplot.cpp
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@@ -117,7 +117,8 @@ void SpectrogramPlot::mousePressEvent(QMouseEvent *event)
void SpectrogramPlot::paintMid(QPainter &painter, QRect &rect, range_t<off_t> sampleRange)
{
QPixmap *tile = getPixmapTile(0);
painter.drawPixmap(QRect(rect.x(), rect.y(), linesPerTile(), fftSize), *tile);
}
void SpectrogramPlot::paintFront(QPainter &painter, QRect &rect, range_t<off_t> sampleRange)
@@ -160,13 +161,13 @@ QPixmap* SpectrogramPlot::getPixmapTile(off_t tile)
return obj;
float *fftTile = getFFTTile(tile);
obj = new QPixmap(fftSize, linesPerTile());
QImage image(fftSize, linesPerTile(), QImage::Format_RGB32);
for (int y = 0; y < linesPerTile(); y++) {
float *line = &fftTile[y * fftSize];
for (int x = 0; x < fftSize; x++) {
obj = new QPixmap(linesPerTile(), fftSize);
QImage image(linesPerTile(), fftSize, QImage::Format_RGB32);
for (int x = 0; x < linesPerTile(); x++) {
float *line = &fftTile[x * fftSize];
for (int y = 0; y < fftSize; y++) {
float powerRange = std::abs(int(powerMin - powerMax));
float normPower = (line[x] - powerMax) * -1.0f / powerRange;
float normPower = (line[y] - powerMax) * -1.0f / powerRange;
normPower = clamp(normPower, 0.0f, 1.0f);
image.setPixel(x, y, colormap[(uint8_t)(normPower * (256 - 1))]);