public void ProjectOn(string v1S, string v2S, string evs)
{
var v1 = Vector.Parse(v1S);
var v2 = Vector.Parse(v2S);
var expected = Vector.Parse(evs);
var actual = v1.ProjectOn(v2);
VectorAssert.Equal(expected, actual, 2);
}
public void Rotate(string vs, double angle, string evs)
{
var vector = Vector.Parse(vs);
var expected = Vector.Parse(evs);
var actual = vector.Rotate(angle);
VectorAssert.Equal(expected, actual, 2);
var roundtrip = actual.Rotate(-angle);
VectorAssert.Equal(vector, roundtrip, 2);
}
public void SnapToOrtho(string vs, string evs)
{
var v = Vector.Parse(vs);
var expected = evs == "null" ? (Vector?)null : Vector.Parse(evs);
var actual = v.SnapToOrtho();
VectorAssert.Equal(expected, actual, 2);
var vMinus = v.Rotate(-44);
actual = vMinus.SnapToOrtho();
VectorAssert.Equal(expected, actual, 2);
var vPlus = v.Rotate(44);
actual = vPlus.SnapToOrtho();
VectorAssert.Equal(expected, actual, 2);
}