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); }