public void Position_and_Direction_only_with_radius()
{
var orbitingStand = new OrbitingStand();
Assert.AreEqual(new Vector3(10, 0, 0), orbitingStand.Position);
Assert.AreEqual(new Vector3(-1, 0, 0), orbitingStand.Direction,
new Vector3EqualityComparer());
}
public void Position_and_Direction_with_radius_and_azimuth()
{
var orbitingStand = new OrbitingStand(10, Constants.HALF_PI, 0);
Assert.AreEqual(new Vector3(0, 0, 10), orbitingStand.Position,
new Vector3EqualityComparer());
Assert.AreEqual(new Vector3(0, 0, -1), orbitingStand.Direction,
new Vector3EqualityComparer());
}
public void MinDeclination_is_limited_to_minus_half_pi()
{
var orbitingStand = new OrbitingStand();
orbitingStand.MinDeclination = -Constants.PI;
Assert.AreApproximatelyEqual(-Constants.HALF_PI, orbitingStand.MinDeclination,
2 * Constants.DELTA);
}
public void Constructor_initializes_radius_azimuth_and_declination()
{
var orbitingStand = new OrbitingStand();
Assert.IsNotNull(orbitingStand);
Assert.AreEqual(10.0f, orbitingStand.Radius);
Assert.AreEqual(0.0f, orbitingStand.Azimuth);
Assert.AreEqual(0.0f, orbitingStand.Declination);
}
public void Constructor_sets_radius_azimuth_and_declination()
{
var radius = 20.0f;
var azimuth = Constants.PI;
var declination = Constants.HALF_PI * 0.5f;
var orbitingStand = new OrbitingStand(radius, azimuth, declination);
Assert.IsNotNull(orbitingStand);
Assert.AreEqual(radius, orbitingStand.Radius);
Assert.AreEqual(azimuth, orbitingStand.Azimuth);
Assert.AreEqual(declination, orbitingStand.Declination);
}
public void Position_and_Direction_with_radius_and_declination()
{
var orbitingStand = new OrbitingStand(10, 0, Constants.HALF_PI * 0.5f);
var expectedPosition = new Vector3(10 / Functions.Sqrt(2), 10 / Functions.Sqrt(2), 0);
Assert.AreEqual(expectedPosition,
orbitingStand.Position, new Vector3EqualityComparer());
Assert.AreEqual(-expectedPosition.Normalized(), orbitingStand.Direction,
new Vector3EqualityComparer());
}
public void Direction_setter_is_not_supported_yet()
{
var orbitingStand = new OrbitingStand();
orbitingStand.Direction = new Vector3();
}
public void ViewMatrix()
{
var orbitingStand = new OrbitingStand();
var viewMatrix = orbitingStand.ViewMatrix;
Assert.AreNotEqual(new Matrix(), viewMatrix);
Assert.AreNotEqual(Matrix.Identity, viewMatrix);
}
public void Up_setter_is_not_supported_yet()
{
var orbitingStand = new OrbitingStand();
orbitingStand.Up = new Vector3();
}
public void UpVector_is_y_axis()
{
var orbitingStand = new OrbitingStand();
Assert.AreEqual(Vector3.YAxis, orbitingStand.Up);
}
public void Position_and_Direction_with_radius_azimuth_and_declination()
{
var orbitingStand = new OrbitingStand(
10, Constants.PI * 0.75f, Constants.HALF_PI * 0.5f);
var expectedPosition = new Vector3(-5, 7.071068f, 5);
Assert.AreEqual(expectedPosition, orbitingStand.Position,
new Vector3EqualityComparer());
Assert.AreEqual(-expectedPosition.Normalized(), orbitingStand.Direction,
new Vector3EqualityComparer());
}
