/// <summary>
/// Returns true if the circumcircle of theTri contains theCoordRec
/// </summary>
/// <param name="theTri"></param>
/// <param name="theCoord"></param>
/// <returns></returns>
protected bool Influenced(Triangle theTri, TriVertex theCoord)
{
var result = false;
double cotan = TinningUtils.Cotangent(theTri.Vertices[2], theTri.Vertices[0], theTri.Vertices[1]);
if (cotan > -1E20)
{
double cNorth = ((theTri.Vertices[1].Y + theTri.Vertices[0].Y) / 2) -
((theTri.Vertices[1].X - theTri.Vertices[0].X) / 2) *
cotan;
double cEast = ((theTri.Vertices[1].X + theTri.Vertices[0].X) / 2) +
((theTri.Vertices[1].Y - theTri.Vertices[0].Y) / 2) *
cotan;
double radSq = Math.Pow(cNorth - theTri.Vertices[0].Y, 2) + Math.Pow(cEast - theTri.Vertices[0].X, 2);
result = Math.Pow(theCoord.X - cEast, 2) + Math.Pow(theCoord.Y - cNorth, 2) < radSq;
}
return(result);
}
