void drawDemo (Graphics& g) override
{
{
RectangleList<float> verticalLines;
verticalLines.ensureStorageAllocated (getWidth());
float pos = offset.getValue();
for (int x = 0; x < getWidth(); ++x)
{
float y = getHeight() * 0.3f;
float length = y * std::abs (std::sin (x / 100.0f + 2.0f * pos));
verticalLines.addWithoutMerging (Rectangle<float> ((float) x, y - length * 0.5f, 1.0f, length));
}
g.setColour (Colours::blue.withAlpha (getAlpha()));
g.fillRectList (verticalLines);
}
{
RectangleList<float> horizontalLines;
horizontalLines.ensureStorageAllocated (getHeight());
float pos = offset.getValue();
for (int y = 0; y < getHeight(); ++y)
{
float x = getWidth() * 0.3f;
float length = x * std::abs (std::sin (y / 100.0f + 2.0f * pos));
horizontalLines.addWithoutMerging (Rectangle<float> (x - length * 0.5f, (float) y, length, 1.0f));
}
g.setColour (Colours::green.withAlpha (getAlpha()));
g.fillRectList (horizontalLines);
}
g.setColour (Colours::red.withAlpha (getAlpha()));
const float w = (float) getWidth();
const float h = (float) getHeight();
g.drawLine (positions[0].getValue() * w,
positions[1].getValue() * h,
positions[2].getValue() * w,
positions[3].getValue() * h);
g.drawLine (positions[4].getValue() * w,
positions[5].getValue() * h,
positions[6].getValue() * w,
positions[7].getValue() * h);
}
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);
}
}
}
