public bool LoSLine(int xA, int yA, int xB, int yB)
{
foreach (Point thisPoint in BresLine.RenderLine(new Point(xA, yA), new Point(xB, yB)))
{
if (!trans[thisPoint.X, thisPoint.Y])
{
return(false);
}
}
return(true);
}
/// <summary>
/// Generates a ray table for LoS calculations.
/// </summary>
/// <param name="vrange">Maximum view distance.</param>
public IEnumerable <IEnumerable <Point> > BuildRayList(int vrange)
{
Point orig = new Point(0, 0);
for (int crange = 2; crange <= vrange; crange++)
{
IEnumerable <Point> thisrad = rasterCircle(orig, crange);
foreach (Point thispoint in thisrad)
{
yield return(BresLine.RenderLine(orig, thispoint));
}
}
}