Method paint

Source/Components/EnvelopeGrain.cpp:123–194

}

void EnvelopeGrain::paint(juce::Graphics& g) {
  juce::Colour colour = mParamColour;

  // Panel rectangle
  g.setColour(Utils::Colour::PANEL);
  g.fillRoundedRectangle(getLocalBounds().expanded(0, 20).translated(0, -20).toFloat(), 10);

  // Visualization rect
  g.setColour(Utils::Colour::BACKGROUND);
  g.fillRect(mVizRect);
  
  auto drawRect = mVizRect.reduced(Utils::PADDING);

  float durSec, rateSec;
  if (mBtnSync.getToggleState()) {
    float div = std::pow(2, juce::roundToInt(ParamRanges::SYNC_DIV_MAX * (1.0f - ParamRanges::GRAIN_DURATION.convertTo0to1(mSliderDuration.getValue()))));
    // Find synced duration/rate using fixed 120 bpm and 4 beats per bar (different from actual synthesis, just for vis)
    durSec = (1.0f / 120) * 60.0f * (4 / div);
    div = std::pow(2, juce::roundToInt(ParamRanges::SYNC_DIV_MAX * ParamRanges::GRAIN_RATE.convertTo0to1(mSliderRate.getValue())));
    rateSec = (1.0f / 120) * 60.0f * (4 / div);
  } else {
    durSec = mSliderDuration.getValue();
    rateSec = 1.0f / mSliderRate.getValue();
  }

  float envWidth = (durSec / WINDOW_SECONDS) * drawRect.getWidth();
  float envOffset = (rateSec / WINDOW_SECONDS) * drawRect.getWidth();

  float shapeWidth = envWidth * mSliderShape.getValue() / 2.0f;

  juce::Path clipPath;
  clipPath.addRectangle(drawRect);
  auto envBounds = drawRect.reduced(2, 2);

  // Draw darker odd numbered envelopes
  float tiltWidth = (envWidth * 0.5f) + (mSliderTilt.getValue() * envWidth * 0.5f);
  float curXStart = envBounds.getX() + envOffset;
  juce::Colour envColour = colour.darker(0.5f);
  while (curXStart < envBounds.getWidth()) {
    juce::Path envPath;
    juce::Point<float> lastPt = juce::Point<float>(curXStart, envBounds.getBottom());
    juce::Point<float> pt = juce::Point<float>(juce::jmax(curXStart, curXStart + tiltWidth - shapeWidth), envBounds.getY());
    envPath.addLineSegment(clipPath.getClippedLine(juce::Line(lastPt, pt), false), 1.0f);
    lastPt = pt;
    pt = juce::Point<float>(juce::jmin(curXStart + envWidth, curXStart + tiltWidth + shapeWidth), envBounds.getY());
    envPath.addLineSegment(clipPath.getClippedLine(juce::Line(lastPt, pt), false), 1.0f);
    lastPt = pt;
    pt = juce::Point<float>(curXStart + envWidth, envBounds.getBottom());
    envPath.addLineSegment(clipPath.getClippedLine(juce::Line(lastPt, pt), false), 1.0f);
    g.setColour(envColour);
    g.strokePath(envPath.createPathWithRoundedCorners(5), mPathStroke);
    curXStart += (envOffset * 2.0f);
  }
  curXStart = envBounds.getX();
  // Draw brighter even numbered envelopes
  envColour = colour.brighter(0.5f);
  while (curXStart < envBounds.getWidth()) {
    juce::Path envPath;