public void XYTupleEquality()
{
var c1 = new XYTuple(1, 1);
var c2 = new XYTuple {
X = 1, Y = 1
};
Assert.True(c1 == c2);
Assert.True((c1 as object).Equals(c2));
var c3 = new XYTuple {
X = 2, Y = 2
};
Assert.True(c1 != c3);
Assert.False((c1 as object).Equals(c3));
}
public void XYTupleHashing()
{
var c1 = new XYTuple {
X = 1, Y = 1
};
var c2 = new XYTuple {
X = 1, Y = 1
};
Assert.True(c1.GetHashCode() == c2.GetHashCode());
var c3 = new XYTuple {
X = 2, Y = 2
};
Assert.True(c2.GetHashCode() != c3.GetHashCode());
}
private void DrawTargetContacts(CanvasDrawingSession ds)
{
const float Z = 0;
const float E = EditMargin + EditSize + EditMargin;
var cp = Center;
CheckContacts();
var N = _contactTargets.Count;
_targetPoints.Clear();
for (int i = 0; i < N; i++)
{
var(cont, targ, point, size) = _contactTargets[i];
var p = point * EditScale;
var c = Center + p;
_targetPoints.Add(c);
ds.DrawCircle(c, 8, Colors.Cyan, 5);
#region DrawSimulatedEdge ====================================
switch (targ)
{
case Target.N:
ds.DrawLine(c.X, c.Y, c.X, Z, Colors.Cyan, 3);
break;
case Target.S:
ds.DrawLine(c.X, c.Y, c.X, E, Colors.Cyan, 3);
break;
case Target.E:
ds.DrawLine(c.X, c.Y, E, c.Y, Colors.Cyan, 3);
break;
case Target.W:
ds.DrawLine(c.X, c.Y, Z, c.Y, Colors.Cyan, 3);
break;
case Target.NE:
ds.DrawLine(c.X, c.Y, c.X, Z, Colors.Cyan, 3);
break;
case Target.NW:
ds.DrawLine(c.X, c.Y, c.X, Z, Colors.Cyan, 3);
break;
case Target.SE:
ds.DrawLine(c.X, c.Y, c.X, E, Colors.Cyan, 3);
break;
case Target.SW:
ds.DrawLine(c.X, c.Y, c.X, E, Colors.Cyan, 3);
break;
case Target.EN:
ds.DrawLine(c.X, c.Y, E, c.Y, Colors.Cyan, 3);
break;
case Target.ES:
ds.DrawLine(c.X, c.Y, E, c.Y, Colors.Cyan, 3);
break;
case Target.WN:
ds.DrawLine(c.X, c.Y, Z, c.Y, Colors.Cyan, 3);
break;
case Target.WS:
ds.DrawLine(c.X, c.Y, Z, c.Y, Colors.Cyan, 3);
break;
case Target.NEC:
ds.DrawLine(c.X, c.Y, E, Z, Colors.Cyan, 3);
break;
case Target.NWC:
ds.DrawLine(c.X, c.Y, Z, Z, Colors.Cyan, 3);
break;
case Target.SEC:
ds.DrawLine(c.X, c.Y, E, E, Colors.Cyan, 3);
break;
case Target.SWC:
ds.DrawLine(c.X, c.Y, Z, E, Colors.Cyan, 3);
break;
}
#endregion
if (cont == Contact.Any && size > 0)
{
var(p1, p2) = XYTuple.GetScaledNormal(targ, point, size, Center, EditScale);
ds.DrawLine(p1, p2, Color.FromArgb(0x80, 0xFF, 0, 0), 20);
}
}
}
