public static IEnumerable <Vector2> Enumerate(Int32 radiusX, Int32 radiusY, Boolean filled = false)
{
// preliminary check - zero point
if (radiusX == 0 || radiusY == 0)
{
return(Enumerable.Empty <Vector2>());
}
// preliminary check - horizontal line
if (radiusY == 1 || radiusY == -1)
{
return(LineRasterizer.EnumerateHorizontalLine(radiusX));
}
// preliminary check - vertical line
if (radiusX == 1 || radiusX == -1)
{
return(LineRasterizer.EnumerateVerticalLine(radiusY));
}
// potencial problem - negative radius X
if (radiusX < 0)
{
radiusX = -radiusX;
}
// potencial problem - negative radius Y
if (radiusY < 0)
{
radiusY = -radiusY;
}
// enumerates ellipse
return(EnumerateEllipse(radiusX, radiusY, filled));
}
