public void Able_to_get_the_width_and_height_of_a_complex_polygon()
{
// Given
UniqueFractalPolygon polygon = new UniqueFractalPolygon();
PointCollection points = polygon.DrawablePoints;
// modify the fractal shape so that we know what the centre point will be
points.Add(new System.Windows.Point(-20, 50));
points.Add(new System.Windows.Point(220, -70));
// When
System.Windows.Point widthAndHeight = polygon.GetWidthAndHeight(points);
// Then
var expectedWidth = 240.0;
var actualWidth = widthAndHeight.X;
Assert.AreEqual(expectedWidth, actualWidth);
var expectedHeight = 120.0;
var actualHeight = widthAndHeight.Y;
Assert.AreEqual(expectedHeight, actualHeight);
}
public void Able_to_get_the_width_and_height_of_that_is_centred_on_a_positive_location_and_not_origin()
{
// Given
UniqueFractalPolygon polygon = new UniqueFractalPolygon();
// centred on (+10, +10)
PointCollection pointsPositiveOffsetFromCentre = new PointCollection();
pointsPositiveOffsetFromCentre.Add(new System.Windows.Point(11, 9));
pointsPositiveOffsetFromCentre.Add(new System.Windows.Point(9, 9));
pointsPositiveOffsetFromCentre.Add(new System.Windows.Point(9, 11));
pointsPositiveOffsetFromCentre.Add(new System.Windows.Point(11, 11));
// When
System.Windows.Point widthAndHeight = polygon.GetWidthAndHeight(pointsPositiveOffsetFromCentre);
// Then
var expectedWidth = 2.0;
var actualWidth = widthAndHeight.X;
Assert.AreEqual(expectedWidth, actualWidth);
var expectedHeight = 2.0;
var actualHeight = widthAndHeight.Y;
Assert.AreEqual(expectedHeight, actualHeight);
}
public void Able_to_get_the_width_and_height_of_a_square()
{
// Given
UniqueFractalPolygon polygon = new UniqueFractalPolygon();
// When
PointCollection points = new PointCollection();
points.Add(new System.Windows.Point(0, 0));
points.Add(new System.Windows.Point(0, 1));
points.Add(new System.Windows.Point(1, 1));
points.Add(new System.Windows.Point(1, 0));
System.Windows.Point centrePoint = polygon.GetWidthAndHeight(points);
// Then
var expectedX = 1.0;
Assert.AreEqual(expectedX, centrePoint.X);
var expectedY = 1.0;
Assert.AreEqual(expectedY, centrePoint.Y);
}
