public static void MultiplicationFull2x3Test()
{
TrafoTesting.GenericTest(rnd =>
{
var m = TrafoTesting.GetRandom2x3(rnd);
var r = TrafoTesting.GetRandomRot2(rnd);
var mr = m * r;
var rm = r * m;
var mr_ref = m * (M33d)r;
var rm_ref = (M23d)r * (M33d)m;
{
var p = rnd.UniformV2d() * rnd.UniformInt(1000);
var res_mr = mr.TransformPos(p);
var res_mr_ref = mr_ref.TransformPos(p);
var res_rm = rm.TransformPos(p);
var res_rm_ref = rm_ref.TransformPos(p);
TrafoTesting.AreEqual(res_mr, res_mr_ref);
TrafoTesting.AreEqual(res_rm, res_rm_ref);
}
});
}
public static void MultiplicationScaleTest()
=> TrafoTesting.GenericTest(rnd =>
{
var a = TrafoTesting.GetRandomRot2(rnd);
var b = TrafoTesting.GetRandomScale2(rnd);
var p = rnd.UniformV2d() * rnd.UniformInt(1000);
{
var trafo = a * b;
var res = trafo.TransformPos(p);
var trafoRef = (M33d)a * (M33d)b;
var resRef = trafoRef.TransformPos(p);
TrafoTesting.AreEqual(res, resRef);
}
{
var trafo = b * a;
var res = trafo.TransformPos(p);
var trafoRef = (M33d)b * (M33d)a;
var resRef = trafoRef.TransformPos(p);
TrafoTesting.AreEqual(res, resRef);
}
});
public static void DistanceTest()
{
TrafoTesting.GenericTest(rnd =>
{
var delta = (rnd.UniformDouble() - 0.5) * 2.0 * Constant.Pi;
var r1 = TrafoTesting.GetRandomRot2(rnd);
var r2 = new Rot2d(r1.Angle + (delta + Constant.PiTimesTwo * rnd.UniformInt(10)));
var dist = r1.Distance(r2);
TrafoTesting.AreEqual(dist, Fun.Abs(delta));
});
}
public static void InverseTest()
{
TrafoTesting.GenericTest(rnd =>
{
var r = TrafoTesting.GetRandomRot2(rnd);
var p = rnd.UniformV2d() * rnd.UniformInt(1000);
var q = r.Transform(p);
// Inverse property
var res = r.Inverse.Transform(q);
// Invert method
Rot.Invert(ref r);
var res2 = r.Transform(q);
TrafoTesting.AreEqual(p, res);
TrafoTesting.AreEqual(p, res2);
});
}
public static void Multiplication2x3Test()
{
TrafoTesting.GenericTest(rnd =>
{
var r1 = TrafoTesting.GetRandomRot2(rnd);
var r2 = TrafoTesting.GetRandomRot2(rnd);
var r = r1 * r2;
var rm = (M23d)r1 * r2;
var mr = r1 * (M23d)r2;
{
var p = rnd.UniformV2d() * rnd.UniformInt(1000);
var res = r.Transform(p);
var res2 = rm.TransformPos(p);
var res3 = mr.TransformPos(p);
TrafoTesting.AreEqual(res, res2);
TrafoTesting.AreEqual(res, res3);
}
});
}