public void GrahamScan(PdfPoint[] points, PdfPoint[] expected)
{
expected = expected.OrderBy(p => p.X).ThenBy(p => p.Y).ToArray();
var convexHull = GeometryExtensions.GrahamScan(points).OrderBy(p => p.X).ThenBy(p => p.Y).ToArray();
for (var i = 0; i < expected.Length; i++)
{
Assert.Equal(expected[i], convexHull[i], PointComparer);
}
}
public void Issue458(PdfPoint[] points, PdfPoint[] expected)
{
/*
* https://github.com/UglyToad/PdfPig/issues/458
* An unhandled exception of type 'System.ArgumentOutOfRangeException' occurred in System.Linq.dll: 'Specified argument was out of the range of valid values.'
* at System.Linq.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument)
* at System.Linq.Enumerable.ElementAt[TSource](IEnumerable`1 source, Int32 index)
*/
var result = GeometryExtensions.GrahamScan(points);
// Data is noisy so we just check it does not throw an exception
// and that key points are present (other points might be present,
// e.g. 'not enough equal dupplicates' or 'not collinear enough' points)
foreach (var point in expected)
{
Assert.Contains(point, result);
}
}