private List <Point> GetHandlePoints(SpectrumAnalyserHandle handle)
{
List <Point> returnValue = new List <Point>();
var xPos = handle.Bin * Size.Width / _spectrumEngine.Bins;
var yPos = handle.Level * Size.Height / 256;
returnValue.Add(new Point(xPos, yPos));
returnValue.Add(new Point(xPos, yPos - handle.LevelRange));
returnValue.Add(new Point(xPos, yPos + handle.LevelRange));
return(returnValue);
}
private List <Rectangle> GetHandleRects(SpectrumAnalyserHandle handle, int handleRadius)
{
List <Rectangle> returnValue = new List <Rectangle>();
var xPos = handle.Bin * Size.Width / _spectrumEngine.Bins;
var yPos = handle.Level * Size.Height / 256;
returnValue.Add(new Rectangle(xPos - handleRadius / 2, yPos - handleRadius / 2, handleRadius, handleRadius));
handleRadius = handleRadius / 2;
returnValue.Add(new Rectangle(xPos - handleRadius / 2, (yPos - handle.LevelRange) - handleRadius / 2, handleRadius, handleRadius));
returnValue.Add(new Rectangle(xPos - handleRadius / 2, (yPos + handle.LevelRange) - handleRadius / 2, handleRadius, handleRadius));
return(returnValue);
}
private static void DrawHandleText(Graphics graphics, int fontSize, SpectrumAnalyserHandle handle, Brush fontBrush,
Rectangle handleRect)
{
using (var font1 = new Font("Segoe UI", fontSize, FontStyle.Bold, GraphicsUnit.Point))
{
var stringFormat = new StringFormat
{
Alignment = StringAlignment.Center,
LineAlignment = StringAlignment.Center
};
graphics.DrawString(handle.Number.ToString(), font1, fontBrush, handleRect, stringFormat);
}
}
