private static ICanvasImage Render(IPeakProvider peakProvider, WaveFormRendererSettings settings) { if (settings.DecibelScale) { peakProvider = new DecibelPeakProvider(peakProvider, 48); } var b = new CanvasRenderTarget(settings.Device, settings.Width, settings.TopHeight + settings.BottomHeight, 96); using (var ds = b.CreateDrawingSession()) { if (settings.BackgroundColor == Colors.Transparent) { ds.Clear(Colors.Transparent); } ds.FillRectangle(0, 0, (float)b.Bounds.Width, (float)b.Bounds.Height, settings.BackgroundBrush); var midPoint = settings.TopHeight; int x = 0; var currentPeak = peakProvider.GetNextPeak(); while (x < settings.Width) { var nextPeak = peakProvider.GetNextPeak(); for (int n = 0; n < settings.PixelsPerPeak; n++) { var lineHeight = settings.TopHeight * currentPeak.Max; ds.DrawPen(settings.TopPeakPen, x, midPoint, x, midPoint - lineHeight); lineHeight = settings.BottomHeight * currentPeak.Min; ds.DrawPen(settings.BottomPeakPen, x, midPoint, x, midPoint - lineHeight); x++; } for (int n = 0; n < settings.SpacerPixels; n++) { // spacer bars are always the lower of the var max = Math.Min(currentPeak.Max, nextPeak.Max); var min = Math.Max(currentPeak.Min, nextPeak.Min); var lineHeight = settings.TopHeight * max; ds.DrawPen(settings.TopSpacerPen, x, midPoint, x, midPoint - lineHeight); lineHeight = settings.BottomHeight * min; ds.DrawPen(settings.BottomSpacerPen, x, midPoint, x, midPoint - lineHeight); x++; } currentPeak = nextPeak; } } return(b); }
private static Image Render(IPeakProvider peakProvider, WaveFormRendererSettings settings) { if (settings.DecibelScale) { peakProvider = new DecibelPeakProvider(peakProvider, 48); } var b = new Bitmap(settings.Width, settings.TopHeight + settings.BottomHeight); if (settings.BackgroundColor == Color.Transparent) { b.MakeTransparent(); } using (var g = Graphics.FromImage(b)) { g.FillRectangle(settings.BackgroundBrush, 0, 0, b.Width, b.Height); var midPoint = settings.TopHeight; int x = 0; var currentPeak = peakProvider.GetNextPeak(); while (x < settings.Width) { var nextPeak = peakProvider.GetNextPeak(); for (int n = 0; n < settings.PixelsPerPeak; n++) { var lineHeight = settings.TopHeight * currentPeak.Max; g.DrawLine(settings.TopPeakPen, x, midPoint, x, midPoint - lineHeight); lineHeight = settings.BottomHeight * currentPeak.Min; g.DrawLine(settings.BottomPeakPen, x, midPoint, x, midPoint - lineHeight); x++; } for (int n = 0; n < settings.SpacerPixels; n++) { // spacer bars are always the lower of the var max = Math.Min(currentPeak.Max, nextPeak.Max); var min = Math.Max(currentPeak.Min, nextPeak.Min); var lineHeight = settings.TopHeight * max; g.DrawLine(settings.TopSpacerPen, x, midPoint, x, midPoint - lineHeight); lineHeight = settings.BottomHeight * min; g.DrawLine(settings.BottomSpacerPen, x, midPoint, x, midPoint - lineHeight); x++; } currentPeak = nextPeak; } } return(b); }