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Fix tile ID calculation

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Mike Walters
2015-09-11 20:11:15 +01:00
parent de9be20257
commit d679ab6b6c
1 changed files with 3 additions and 4 deletions
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7
spectrogram.cpp
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@@ -69,11 +69,10 @@ void Spectrogram::paintEvent(QPaintEvent *event)
for (int y = 0; y < height; y++) {
if (tileLine >= linesPerTile()) {
off_t tileId = lineToSample(rect.y() + y);
int line = rect.y() + y;
tileLine = line % linesPerTile();
off_t tileId = lineToSample(line - tileLine);
tile = getTile(tileId);
// Handle case where we want to draw from part-way through the first tile
tileLine = (rect.y() + y) - sampleToLine(tileId);
}
float *line = &tile[tileLine * fftSize];