anonymous_namespace{DynamicRangeProcessorTransferFunctionPanel.cpp} Namespace Reference

Functions
constexpr auto	WidthPxToDb (double x, int width, double xPixelsPerDb)
constexpr auto	WidthDbToPx (double db, int width, double xPixelsPerDb)
constexpr auto	HeightDbToPx (double db, double yPixelsPerDb)
auto	GetBrush (double kneeX, double kneeY, const wxColor &colorAtKnee, const wxSize &size, const wxGraphicsContext &gc)
void	DrawTransferFunction (wxPaintDC &dc, const wxRect &rect, const CompressorSettings &settings)

Function Documentation

DrawTransferFunction()

void anonymous_namespace{DynamicRangeProcessorTransferFunctionPanel.cpp}::DrawTransferFunction	(	wxPaintDC &	dc,
		const wxRect &	rect,
		const CompressorSettings &	settings
	)

Definition at line 71 of file DynamicRangeProcessorTransferFunctionPanel.cpp.

{
   const auto X = rect.GetWidth();
   const auto Y = rect.GetHeight();
   const auto xPixelsPerDb =
      1.f * X / DynamicRangeProcessorTransferFunctionPanel::rangeDb;
   const auto yPixelsPerDb =
      1.f * Y / DynamicRangeProcessorTransferFunctionPanel::rangeDb;
 
   std::vector<wxPoint2DDouble> points;
   points.reserve(X);
   for (int x = rect.GetX(); x < X; ++x)
   {
      const auto db = WidthPxToDb(x, X, xPixelsPerDb);
      const auto y = HeightDbToPx(
         CompressorProcessor::EvaluateTransferFunction(settings, db),
         yPixelsPerDb);
      points.emplace_back(x, y);
   }
 
   using namespace DynamicRangeProcessorPanel;
 
   const auto gc = MakeGraphicsContext(dc);
 
   const auto kneeX = WidthDbToPx(settings.thresholdDb, X, xPixelsPerDb);
   const auto kneeY =
      HeightDbToPx(settings.thresholdDb + settings.makeupGainDb, yPixelsPerDb);
 
   // Fill the area above the curve
   wxGraphicsPath path = gc->CreatePath();
   path.MoveToPoint(X, 0);
   path.AddLineToPoint(0, 0);
   std::for_each(points.begin(), points.end(), [&path](const auto& point) {
      path.AddLineToPoint(point);
   });
   path.CloseSubpath();
   gc->SetBrush(GetBrush(kneeX, kneeY, attackColor, rect.GetSize(), *gc));
   gc->FillPath(path);
 
   // Fill the area below the curve
   path = gc->CreatePath();
   path.MoveToPoint(X, Y);
   path.AddLineToPoint(0, Y);
   std::for_each(points.begin(), points.end(), [&path](const auto& point) {
      path.AddLineToPoint(point);
   });
   path.CloseSubpath();
   gc->SetBrush(GetBrush(kneeX, kneeY, releaseColor, rect.GetSize(), *gc));
   gc->FillPath(path);
 
   // Draw the curve
   const auto gc2 = MakeGraphicsContext(dc);
   gc2->SetPen(wxPen { targetCompressionColor, targetCompressionLineWidth });
   gc2->DrawLines(points.size(), points.data());
}

References DynamicRangeProcessorPanel::attackColor, CompressorProcessor::EvaluateTransferFunction(), GetBrush(), HeightDbToPx(), DynamicRangeProcessorPanel::MakeGraphicsContext(), DynamicRangeProcessorTransferFunctionPanel::rangeDb, DynamicRangeProcessorPanel::releaseColor, settings(), DynamicRangeProcessorPanel::targetCompressionColor, DynamicRangeProcessorPanel::targetCompressionLineWidth, WidthDbToPx(), and WidthPxToDb().

Referenced by DynamicRangeProcessorTransferFunctionPanel::OnPaint().

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GetBrush()

auto anonymous_namespace{DynamicRangeProcessorTransferFunctionPanel.cpp}::GetBrush	(	double	kneeX,
		double	kneeY,
		const wxColor &	colorAtKnee,
		const wxSize &	size,
		const wxGraphicsContext &	gc
	)

Definition at line 56 of file DynamicRangeProcessorTransferFunctionPanel.cpp.

{
   using namespace DynamicRangeProcessorPanel;
   constexpr auto w = .75;
   const wxColor edgeColor = GetColorMix(backgroundColor, colorAtKnee, w);
 
   const auto xf = size.GetWidth() / 2.; // "f" for "focus"
   const auto yf = size.GetHeight() / 2.;
   const auto radius = size.GetWidth();
   return gc.CreateRadialGradientBrush(
      kneeX, kneeY, xf, yf, radius, colorAtKnee, edgeColor);
}

References DynamicRangeProcessorPanel::backgroundColor, DynamicRangeProcessorPanel::GetColorMix(), and size.

Referenced by DrawTransferFunction().

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HeightDbToPx()

constexpr auto anonymous_namespace{DynamicRangeProcessorTransferFunctionPanel.cpp}::HeightDbToPx ( double  db, double  yPixelsPerDb  )

constexpr

Definition at line 51 of file DynamicRangeProcessorTransferFunctionPanel.cpp.

{
   return -db * yPixelsPerDb;
}

Referenced by DrawTransferFunction().

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WidthDbToPx()

constexpr auto anonymous_namespace{DynamicRangeProcessorTransferFunctionPanel.cpp}::WidthDbToPx ( double  db, int  width, double  xPixelsPerDb  )

constexpr

Definition at line 46 of file DynamicRangeProcessorTransferFunctionPanel.cpp.

{
   return width - 1 + db * xPixelsPerDb;
}

Referenced by DrawTransferFunction().

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WidthPxToDb()

constexpr auto anonymous_namespace{DynamicRangeProcessorTransferFunctionPanel.cpp}::WidthPxToDb ( double  x, int  width, double  xPixelsPerDb  )

constexpr

Definition at line 41 of file DynamicRangeProcessorTransferFunctionPanel.cpp.

{
   return (x + 1 - width) / xPixelsPerDb;
}

Referenced by DrawTransferFunction().

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