public void Reverse()
{
var p2 = new Vec2d(1, 2);
Assert.AreEqual(new Vec2d(-1, -2), p2.Reversed());
p2.Reverse();
Assert.AreEqual(new Vec2d(-1, -2), p2);
}
//--------------------------------------------------------------------------------------------------
public static void RenderArrow(IDrawingRenderer renderer, Ax2d location, double scale = 1.0)
{
var arrowSize = GetArrowSize();
var p1 = location.Location;
var backpoint = p1.Translated(location.Direction.Reversed().ToVec(arrowSize.Length * scale));
var rightVec = new Vec2d(location.Direction.Y, -location.Direction.X).Scaled(arrowSize.Width * 0.5 * scale);
var p2 = backpoint.Translated(rightVec);
var p3 = backpoint.Translated(rightVec.Reversed());
renderer.SetStyle(null, new FillStyle(Common.Color.Black), null);
renderer.BeginPath();
renderer.BeginPathSegment();
renderer.Line(p1, p2);
renderer.Line(p2, p3);
renderer.Line(p3, p1);
renderer.EndPathSegment();
renderer.EndPath();
}
public void ValueType_Vec2d()
{
var p1 = new Vec2d(1, 0);
var p2 = new Vec2d(0, 1);
Assert.IsFalse(p1.IsEqual(p2, 0.99, 0.1));
Assert.IsTrue(p1.IsEqual(p2, 1.01, 0.1));
Assert.IsTrue(p1.IsEqual(p2, 0.99, Math.PI / 2));
Assert.IsTrue(p1.IsNormal(p2, 0.1));
Assert.IsFalse(p1.IsOpposite(p2, 0.1));
Assert.IsTrue(p1.IsOpposite(p2, Math.PI / 2));
Assert.IsFalse(p1.IsParallel(p2, 0.1));
Assert.IsTrue(p1.IsParallel(p2, Math.PI / 2));
p1 = new Vec2d(1, 2);
p2 = new Vec2d(4, 5);
Assert.AreEqual(5, p1.SquareMagnitude());
Assert.AreEqual(Math.Sqrt(5), p1.Magnitude());
p2 = p1;
p2.Add(new Vec2d(1, 2));
Assert.AreEqual(new Vec2d(2, 4), p2);
Assert.AreEqual(new Vec2d(2, 4), p1.Added(new Vec2d(1, 2)));
p2 = new Vec2d(1, 2);
p2.Subtract(new Vec2d(3, 2));
Assert.AreEqual(new Vec2d(-2, 0), p2);
Assert.AreEqual(new Vec2d(-2, 0), p1.Subtracted(new Vec2d(3, 2)));
p2 = new Vec2d(1, 2);
Assert.AreEqual(-4, p1.Crossed(new Vec2d(3, 2)));
Assert.AreEqual(Math.Sqrt(16), p1.CrossMagnitude(new Vec2d(3, 2)));
Assert.AreEqual(16, p1.CrossSquareMagnitude(new Vec2d(3, 2)));
p2 = new Vec2d(1, 2);
p2.Divide(2);
Assert.AreEqual(new Vec2d(0.5, 1), p2);
Assert.AreEqual(new Vec2d(0.5, 1), p1.Divided(2));
Assert.AreEqual(5, p1.Dot(new Vec2d(1, 2)));
p2 = new Vec2d(1, 2);
p2.Multiply(2);
Assert.AreEqual(new Vec2d(2, 4), p2);
Assert.AreEqual(new Vec2d(2, 4), p1.Multiplied(2));
p2 = new Vec2d(1, 2);
p2.Scale(2);
Assert.AreEqual(new Vec2d(2, 4), p2);
Assert.AreEqual(new Vec2d(2, 4), p1.Scaled(2));
p2 = new Vec2d(1, 23);
Assert.AreEqual("0.0434372242763069,0.99905615835506", p2.Normalized().ToString());
p2.Normalize();
Assert.AreEqual("0.0434372242763069,0.99905615835506", p2.ToString());
p2 = new Vec2d(1, 2);
p2.Reverse();
Assert.AreEqual(new Vec2d(-1, -2), p2);
Assert.AreEqual(new Vec2d(-1, -2), p1.Reversed());
p2.SetLinearForm(new Vec2d(1, 2), new Vec2d(4, 5));
Assert.AreEqual(new Vec2d(5, 7), p2);
p2.SetLinearForm(2, new Vec2d(1, 2), new Vec2d(4, 5));
Assert.AreEqual(new Vec2d(6, 9), p2);
p2.SetLinearForm(2, new Vec2d(1, 2), 3, new Vec2d(4, 5));
Assert.AreEqual(new Vec2d(14, 19), p2);
p2.SetLinearForm(2, new Vec2d(1, 2), 3, new Vec2d(4, 5), new Vec2d(7, 8));
Assert.AreEqual(new Vec2d(21, 27), p2);
p2 = new Vec2d(2, 1);
Assert.AreEqual(new Vec2d(1, 0), p2.Mirrored(new Vec2d(1, 0)));
p2.Mirror(new Vec2d(1, 0));
Assert.AreEqual(new Vec2d(1, 0), p2);
var m2 = new Ax2d(new Pnt2d(-1, 2), new Dir2d(-1, 0));
p2 = new Vec2d(2, 1);
Assert.AreEqual(new Vec2d(2, -1), p2.Mirrored(m2));
p2.Mirror(m2);
Assert.AreEqual(new Vec2d(2, -1), p2);
p2 = new Vec2d(2, 1);
Assert.AreEqual("-1,2", p2.Rotated(Math.PI / 2).ToString());
p2.Rotate(Math.PI / 2);
Assert.AreEqual("-1,2", p2.ToString());
//TestContext.WriteLine(string.Format(CultureInfo.InvariantCulture, "{0},{1},{2}", gp2.x, gp2.y, gp2.z));
Trsf2d t1 = new Trsf2d();
t1.SetRotation(new Pnt2d(1, 2), Math.PI / 2);
p2 = new Vec2d(2, 1);
Assert.AreEqual("-1,2", p2.Transformed(t1).ToString());
p2.Transform(t1);
Assert.AreEqual("-1,2", p2.ToString());
}