Method DrawPoints

src/EnvelopeEditor.cpp:37–108

}

void EnvelopeEditor::DrawPoints(const Envelope &env,
 TrackPanelDrawingContext &context, const wxRect & r,
 bool dB, double dBRange,
 float zoomMin, float zoomMax, bool mirrored, int origin)
{
   auto &dc = context.dc;
   const auto artist = TrackArtist::Get( context );
   const auto &zoomInfo = *artist->pZoomInfo;

   bool highlight = false;
#ifdef EXPERIMENTAL_TRACK_PANEL_HIGHLIGHTING
   auto target = dynamic_cast<EnvelopeHandle*>(context.target.get());
   highlight = target && target->GetEnvelope() == &env;
#endif
   wxPen &pen = highlight ? AColor::uglyPen : AColor::envelopePen;
   dc.SetPen( pen );
   dc.SetBrush(*wxWHITE_BRUSH);

   for (int i = 0; i < (int)env.GetNumberOfPoints(); i++) {
      const double time = env[i].GetT() + env.GetOffset();
      const wxInt64 position = zoomInfo.TimeToPosition(time, origin);
      if (position >= 0 && position < r.width) {
         // Change colour if this is the draggable point...
         if (i == env.GetDragPoint()) {
            dc.SetPen( pen );
            dc.SetBrush(AColor::envelopeBrush);
         }

         double v = env[i].GetVal();
         int x = (int)(position);
         int y, y2;

         y = GetWaveYPos(v, zoomMin, zoomMax, r.height, dB,
            true, dBRange, false);
         if (!mirrored) {
            DrawPoint(dc, r, x, y, true);
         }
         else {
            y2 = GetWaveYPos(-v-.000000001, zoomMin, zoomMax, r.height, dB,
               true, dBRange, false);

            // This follows the same logic as the envelop drawing in
            // TrackArt::DrawEnvelope().
            // TODO: make this calculation into a reusable function.
            if (y2 - y < 9) {
               int value = (int)((zoomMax / (zoomMax - zoomMin)) * r.height);
               y = value - 4;
               y2 = value + 4;
            }

            DrawPoint(dc, r, x, y, true);
            DrawPoint(dc, r, x, y2, false);

            // Contour
            y = GetWaveYPos(v, zoomMin, zoomMax, r.height, dB,
               false, dBRange, false);
            y2 = GetWaveYPos(-v-.000000001, zoomMin, zoomMax, r.height, dB,
               false, dBRange, false);