public void EndEdit_Throws()
{
var value = new ClVariable("value", 0);
var solver = new ClSimplexSolver();
solver.AddStay(value, ClStrength.Strong);
solver.BeginEdit(value)
.SuggestValue(value, 25)
.EndEdit(); // <- Exception raised here
}
public void Multiedit()
{
var x = new ClVariable("x");
var y = new ClVariable("y");
var w = new ClVariable("w");
var h = new ClVariable("h");
var e1 = _solver
.AddStay(x)
.AddStay(y)
.AddStay(w)
.AddStay(h)
.BeginEdit(x, y)
.SuggestValue(x, 10)
.SuggestValue(y, 20)
.Resolve();
Assert.IsTrue(Cl.Approx(x, 10));
Assert.IsTrue(Cl.Approx(y, 20));
Assert.IsTrue(Cl.Approx(w, 0));
Assert.IsTrue(Cl.Approx(h, 0));
_solver
.BeginEdit(w, h)
.SuggestValue(w, 30)
.SuggestValue(h, 40)
.EndEdit();
Assert.IsTrue(Cl.Approx(x, 10));
Assert.IsTrue(Cl.Approx(y, 20));
Assert.IsTrue(Cl.Approx(w, 30));
Assert.IsTrue(Cl.Approx(h, 40));
e1
.SuggestValue(x, 50)
.SuggestValue(y, 60)
.EndEdit();
Assert.IsTrue(Cl.Approx(x, 50));
Assert.IsTrue(Cl.Approx(y, 60));
Assert.IsTrue(Cl.Approx(w, 30));
Assert.IsTrue(Cl.Approx(h, 40));
}
public void EndEdit_NonRequiredVariable_SolvesCorrectly()
{
//Create a solver
var solver = new ClSimplexSolver();
var variable = new ClVariable(0f);
//Add a stay, indicating this var should stay at it's current value if possible
solver.AddStay(variable, ClStrength.Strong, 1);
//Bug Fixing Note: The stay is strong, which overpowers the SuggestValue. If the stay is Medium or Weak then the SuggestValue takes hold and this test does *not* fail!
//tl;dr: This bug only happens if the suggest value does nothing?
const double EXPECTED_VALUE = 10.0;
//Suggest a value for the variable in an edit context
var editContext = solver.BeginEdit(variable);
editContext.SuggestValue(variable, EXPECTED_VALUE);
editContext.EndEdit();
}
void BeginEdit()
{
solver.BeginEdit();
}
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);
}