public void EqualsTest()
{
var solid = new KtSolidRegion(CreateArbitraryRegion());
var solid2 = new KtSolidRegion(CreateArbitraryRegion());
Assert.AreEqual(solid2, solid);
}
internal void Add(KtSolidRegion region)
{
if (region == null)
{
throw new ArgumentNullException($"An Empty region= ({region}) cannot be added to the polygon= ({this})");
}
var(intersected, notintersected) = _regions.Fork(reg => region.IsIntersecting(reg));
if (intersected.IsEmpty())
{
_regions.Add(region);
}
else
{
_regions = notintersected.Concat(new[] { intersected.Aggregate(region, (total, reg) => total.Add(reg).FirstOrDefault()) }).ToList();
}
}
public static void DrawHoledRegion(this Graphics gr, KtSolidRegion reg, Color color)
{
if (reg.Count < 3)
{
return;
}
using var gp = new GraphicsPath();
gp.AddPolygon(reg.ToArrayOfPoints());
foreach (var hole in reg.Holes)
{
gp.AddPolygon(hole.ToArrayOfPoints());
}
using var pen = new Pen(color);
gr.FillPath(pen.Brush, gp);
using var pen2 = new Pen(Color.Red);
pen2.Width = 2;
gr.DrawPath(pen2, gp);
}