UntriggeredOscilloscope.cpp

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/*
  ==============================================================================
 
    UntriggeredOscilloscope.cpp
    Created: 28 Feb 2023 4:25:16pm
    Author:  wadda
 
  ==============================================================================
*/
 
#include "UntriggeredOscilloscope.h"
 
UntriggeredOscilloscope::UntriggeredOscilloscope(OscilloscopeAudioProcessor &aProcessor, int sampleRate)
    : OscilloscopeComponent(aProcessor, sampleRate, aProcessor.getEditorRefreshRate())
{
}
 
void UntriggeredOscilloscope::plot(juce::Graphics &g, juce::Rectangle<float> rect, float scaler, float offset)
{
  // get beginning and num samples
  auto data = sampleData.data();
  auto numSamples = sampleData.size();
 
  // get bounds
  auto w = rect.getWidth();
  auto h = rect.getHeight();
  auto right = rect.getRight();
  auto center = rect.getBottom() - offset;
  auto gain = h * scaler;
 
  // set colour
  g.setColour(WAVEFORMCOLOUR());
 
  // for each point map and draw line
  for (size_t i = 1; i < numSamples; ++i)
  {
    g.drawLine({juce::jmap(float(i - 1), float(0), float(numSamples - 1), float(right - w), float(right)),
                center - gain * data[i - 1],
                juce::jmap(float(i), float(0), float(numSamples - 1), float(right - w), float(right)),
                center - gain * data[i]});
  }
}
 
void UntriggeredOscilloscope::subclassSpecificCallback()
{
  // Nothing to do for this subclass
  return;
}