public void Playground()
{
//Implementation of this example: https://cassowary.readthedocs.org/en/latest/topics/examples.html#quadrilaterals
var _0 = new ClPoint(10, 10);
var _1 = new ClPoint(10, 200);
var _2 = new ClPoint(200, 200);
var _3 = new ClPoint(200, 10);
var m0 = new ClPoint(0, 0);
var m1 = new ClPoint(0, 0);
var m2 = new ClPoint(0, 0);
var m3 = new ClPoint(0, 0);
//We don't want the points to move unless necessary
_solver.AddPointStays(new[] { _0, _1, _2, _3 });
//Define the midpoints
// ReSharper disable CompareOfFloatsByEqualityOperator
_solver.AddConstraint(m0.X, _0.X, _1.X, (m, a, b) => m == a * 0.5 + b * 0.5);
_solver.AddConstraint(m0.Y, _0.Y, _1.Y, (m, a, b) => m == a * 0.5 + b * 0.5);
_solver.AddConstraint(m1.X, _1.X, _2.X, (m, a, b) => m == a * 0.5 + b * 0.5);
_solver.AddConstraint(m1.Y, _1.Y, _2.Y, (m, a, b) => m == a * 0.5 + b * 0.5);
_solver.AddConstraint(m2.X, _2.X, _3.X, (m, a, b) => m == a * 0.5 + b * 0.5);
_solver.AddConstraint(m2.Y, _2.Y, _3.Y, (m, a, b) => m == a * 0.5 + b * 0.5);
_solver.AddConstraint(m3.X, _3.X, _0.X, (m, a, b) => m == a * 0.5 + b * 0.5);
_solver.AddConstraint(m3.Y, _3.Y, _0.Y, (m, a, b) => m == a * 0.5 + b * 0.5);
// ReSharper restore CompareOfFloatsByEqualityOperator
//Make sure left stays left and top stays top
_solver.AddConstraint(_0.X, _2.X, (a, b) => a + 20 <= b);
_solver.AddConstraint(_0.X, _3.X, (a, b) => a + 20 <= b);
_solver.AddConstraint(_1.X, _2.X, (a, b) => a + 20 <= b);
_solver.AddConstraint(_1.X, _3.X, (a, b) => a + 20 <= b);
_solver.AddConstraint(_0.Y, _1.Y, (a, b) => a + 20 <= b);
_solver.AddConstraint(_0.Y, _2.Y, (a, b) => a + 20 <= b);
_solver.AddConstraint(_3.Y, _1.Y, (a, b) => a + 20 <= b);
_solver.AddConstraint(_3.Y, _2.Y, (a, b) => a + 20 <= b);
//Make sure all points stay in 500x500 convas
_solver.AddConstraint(_0.X, a => a >= 0);
_solver.AddConstraint(_0.Y, a => a >= 0);
_solver.AddConstraint(_0.X, a => a <= 500);
_solver.AddConstraint(_0.Y, a => a <= 500);
Console.WriteLine(m0.X.Value + " " + m0.Y.Value);
Console.WriteLine(m1.X.Value + " " + m1.Y.Value);
Console.WriteLine(m2.X.Value + " " + m2.Y.Value);
Console.WriteLine(m3.X.Value + " " + m3.Y.Value);
_solver.BeginEdit(_2.X, _2.Y)
.SuggestValue(_2.X, 300)
.SuggestValue(_2.Y, 400)
.EndEdit();
Console.WriteLine(m0.X.Value + " " + m0.Y.Value);
Console.WriteLine(m1.X.Value + " " + m1.Y.Value);
Console.WriteLine(m2.X.Value + " " + m2.Y.Value);
Console.WriteLine(m3.X.Value + " " + m3.Y.Value);
}