public void LineSegment_Translate_ShouldTranslateAsVector()
{
LineSegment lineSegment = new LineSegment(Point.MakePointWithInches(1, 1, 1));
Translation translation = new Translation(new Vector(Point.MakePointWithInches(0, 1, 0)));
lineSegment.Translate(translation).Should().Be(new LineSegment(Point.MakePointWithInches(0, 1, 0), Point.MakePointWithInches(1, 2, 1)));
}
/// <summary>
/// Creates a copy of the given translation
/// </summary>
/// <param name="toCopy">The translation to copy</param>
public Translation(Translation toCopy)
{
this.Point = toCopy.Point;
}
/// <summary>
/// Translates the arc with the given translation
/// </summary>
/// <param name="translation">The translation to apply to the Arc</param>
/// <returns>A new Arc object that has been translated</returns>
public Arc Translate(Translation translation)
{
Point newBasePoint = BasePoint.Translate(translation);
Point newEndPoint = EndPoint.Translate(translation);
Point newCenterPoint = CenterPoint.Translate(translation);
return new Arc(newBasePoint, newEndPoint, newCenterPoint, this.NormalDirection);
}
/// <summary>
/// Creates a Shift with multiple Rotations and a displacment, or zero translation if it is omitted
/// </summary>
/// <param name="rotations">The rotations that make up and are represented by this shift</param>
/// <param name="displacement">The distance of displacement this shift represents in each direction</param>
public Shift(List<Rotation> rotations, Point displacement = null)
{
if (displacement == null)
{
displacement = Point.Origin;
}
foreach(var rotation in rotations)
{
_matrix = rotation.Matrix * _matrix;
}
var translationMatrix = new Translation(displacement).Matrix;
_matrix = translationMatrix * _matrix;
}
private void _setMatrix()
{
var translateInverse = new Translation(_axisOfRotation.BasePoint.Negate()).Matrix;
var rotate = _matrixOfRotationAboutOrigin();
var translate = new Translation(_axisOfRotation.BasePoint).Matrix;
this._matrix = translate * (rotate * translateInverse);
}