/// <summary>
/// Return true if an Equal Elements.Geometry.Triangle appears at least once in the supplied list.
/// </summary>
/// <returns>
/// True if the Triangle vertex positions are AlmostEqual to those of any Triangle in the supplied List.
/// </returns>
public static bool IsListed(this Elements.Geometry.Triangle triangle,
List <Elements.Geometry.Triangle> triangles)
{
foreach (var entry in triangles)
{
if (triangle.IsEqualTo(entry))
{
return(true);
}
}
return(false);
}
/// <summary>
/// Return the number of times an equal Elements.Geometry.Triangle in the supplied list.
/// </summary>
/// <returns>
/// An integer.
/// </returns>
public static int Occurs(this Elements.Geometry.Triangle triangle,
List <Elements.Geometry.Triangle> triangles)
{
int count = 0;
foreach (var entry in triangles)
{
if (triangle.IsEqualTo(entry))
{
count++;
}
}
return(count);
}