void drawChannel (Graphics& g, const Rectangle<int>& area,
const double startTime, const double endTime,
const int channelNum, const float verticalZoomFactor,
const double sampleRate, const int numChannels, const int samplesPerThumbSample,
LevelDataSource* levelData, const OwnedArray<ThumbData>& channels)
{
refillCache (area.getWidth(), startTime, endTime, sampleRate,
numChannels, samplesPerThumbSample, levelData, channels);
if (isPositiveAndBelow (channelNum, numChannelsCached))
{
const Rectangle<int> clip (g.getClipBounds().getIntersection (area.withWidth (jmin (numSamplesCached, area.getWidth()))));
if (! clip.isEmpty())
{
const float topY = (float) area.getY();
const float bottomY = (float) area.getBottom();
const float midY = (topY + bottomY) * 0.5f;
const float vscale = verticalZoomFactor * (bottomY - topY) / 256.0f;
const MinMaxValue* cacheData = getData (channelNum, clip.getX() - area.getX());
int x = clip.getX();
for (int w = clip.getWidth(); --w >= 0;)
{
if (cacheData->isNonZero())
g.drawVerticalLine (x, jmax (midY - cacheData->getMaxValue() * vscale - 0.3f, topY),
jmin (midY - cacheData->getMinValue() * vscale + 0.3f, bottomY));
++x;
++cacheData;
}
}
}
}
void drawChannel (Graphics& g, const Rectangle<int>& area,
const double startTime, const double endTime,
const int channelNum, const float verticalZoomFactor,
const double rate, const int numChans, const int sampsPerThumbSample,
LevelDataSource* levelData, const OwnedArray<ThumbData>& chans)
{
if (refillCache (area.getWidth(), startTime, endTime, rate,
numChans, sampsPerThumbSample, levelData, chans)
&& isPositiveAndBelow (channelNum, numChannelsCached))
{
const Rectangle<int> clip (g.getClipBounds().getIntersection (area.withWidth (jmin (numSamplesCached, area.getWidth()))));
if (! clip.isEmpty())
{
const float topY = (float) area.getY();
const float bottomY = (float) area.getBottom();
const float midY = (topY + bottomY) * 0.5f;
const float vscale = verticalZoomFactor * (bottomY - topY) / 256.0f;
const MinMaxValue* cacheData = getData (channelNum, clip.getX() - area.getX());
RectangleList<float> waveform;
waveform.ensureStorageAllocated (clip.getWidth());
float x = (float) clip.getX();
for (int w = clip.getWidth(); --w >= 0;)
{
if (cacheData->isNonZero())
{
const float top = jmax (midY - cacheData->getMaxValue() * vscale - 0.3f, topY);
const float bottom = jmin (midY - cacheData->getMinValue() * vscale + 0.3f, bottomY);
waveform.addWithoutMerging (Rectangle<float> (x, top, 1.0f, bottom - top));
}
x += 1.0f;
++cacheData;
}
g.fillRectList (waveform);
}
}
}
