def test_regular_rectangle_scaled(self):
x, y = 10, 20
w, h = 7, 20
scale_x = 2
scale_y = 3
rect = Rectangle(width=str(w), height=str(h), x=str(x), y=str(y))
rect.transform = Transform(scale=(scale_x, scale_y))
self.assert_bounding_box_is_equal(rect,
(scale_x * x,
scale_x * (x + w)),
(scale_y * y,
scale_y * (y + h)))
def test_regular_rectangle_with_stroke_scaled(self):
x, y = 10, 20
w, h = 7, 20
stroke_half_width = 1
scale_x = 2
scale_y = 3
rect = Rectangle(width=str(w), height=str(h), x=str(x), y=str(y))
rect.style = Style("stroke-width:{};stroke:red".format(stroke_half_width * 2))
rect.transform = Transform(scale=(scale_x, scale_y))
self.assert_bounding_box_is_equal(rect,
(scale_x * (x - stroke_half_width),
scale_x * (x + w + stroke_half_width)),
(scale_y * (y - stroke_half_width),
scale_y * (y + h + stroke_half_width)))
def test_group_nested_transform(self):
group = Group()
x, y = 10, 20
w, h = 7, 20
scale = 2
rect = Rectangle(width=str(w), height=str(h), x=str(x), y=str(y))
rect.transform = Transform(rotate=45, scale=scale)
group.add(rect)
group.transform = Transform(rotate=-45) # rotation is compensated, but scale is not
a = rect.composed_transform()
self.assert_bounding_box_is_equal(group, (scale * x,
scale * (x + w)),
(scale * y,
scale * (y + h)))