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_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 One_shape_has_a_different_set_of_points_to_another()
{
// When
UniqueFractalPolygon polygonOne = new UniqueFractalPolygon();
UniqueFractalPolygon polygonTwo = new UniqueFractalPolygon();
// Then
Assert.AreNotEqual(polygonOne.DrawablePoints, polygonTwo.DrawablePoints);
}
public void On_creation_the_drawable_points_are_centred_on_zero_zero()
{
// Given
UniqueFractalPolygon polygon = new UniqueFractalPolygon();
// When
System.Windows.Point centrePoint = TestHelper_GetCentrePoint(polygon.DrawablePoints);
// Then
var expectedX = 0.0;
Assert.AreEqual(expectedX, centrePoint.X);
var expectedY = 0.0;
Assert.AreEqual(expectedY, centrePoint.Y);
}
public void Highlighting_changes_the_ouline_colour_and_the_stroke_thickness()
{
// Given
UniqueFractalPolygon polygon = new UniqueFractalPolygon();
var originalOutlineThickness = polygon.Shape.StrokeThickness;
var originalOutlineColour = polygon.Shape.Stroke.ToString();
// When
polygon.Highlight(true);
// Then
var highlightedStrokeThickness = polygon.Shape.StrokeThickness;
Assert.AreNotEqual(originalOutlineThickness, highlightedStrokeThickness);
var highlightedOutlineColour = polygon.Shape.Stroke.ToString();
Assert.AreNotEqual(originalOutlineColour, highlightedOutlineColour);
}
public void Unhighlighting_after_highlighting_changes_the_ouline_colour_and_the_stroke_thickness_back()
{
// Given
UniqueFractalPolygon polygon = new UniqueFractalPolygon();
var originalOutlineThickness = polygon.Shape.StrokeThickness;
var originalOutlineColour = polygon.Shape.Stroke.ToString();
// When
polygon.Highlight(true);
polygon.Highlight(false);
// Then
var revertedStrokeThickness = polygon.Shape.StrokeThickness;
Assert.AreEqual(originalOutlineThickness, revertedStrokeThickness);
var revertedOutlineColour = polygon.Shape.Stroke.ToString();
Assert.AreEqual(originalOutlineColour, revertedOutlineColour);
}
public void Able_to_get_the_centre_of_a_complex_polygon()
{
// Given
UniqueFractalPolygon polygon = new UniqueFractalPolygon();
// When
PointCollection points = polygon.DrawablePoints;
// modify the fractal shape so that we know what the centre point will be
points.Add(new System.Windows.Point(-50, -150));
points.Add(new System.Windows.Point(100, 450));
System.Windows.Point centrePoint = TestHelper_GetCentrePoint(points);
// Then
var expectedX = 25.0;
Assert.AreEqual(expectedX, centrePoint.X);
var expectedY = 150.0;
Assert.AreEqual(expectedY, centrePoint.Y);
}
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);
}
