def test_get_semicircle_points():
assert guiutils.get_semicircle_points(0, 0, 1, 1, 0) == []
li = guiutils.get_semicircle_points(100, 100, 200, 100, 4)
assert len(li) == 4
assert li[0] == (100, 100)
assert li[1][0] > 100
assert li[1][1] < 100
assert li[2][0] > li[1][0]
assert li[2][1] == li[1][1]
assert li[3] == (200, 100)
li = guiutils.get_semicircle_points(100, 100, 100, 200, 4)
assert len(li) == 4
assert li[0] == (100, 100)
assert li[1][0] > 100
assert li[1][1] > 100
assert li[2][0] > 100
assert li[2][0] == li[1][0]
assert li[2][1] > 100
assert li[3] == (100, 200)
li = guiutils.get_semicircle_points(200, 100, 100, 100, 4)
assert len(li) == 4
assert li[0] == (200, 100)
assert li[1][0] > 100
assert li[1][1] > 100
assert li[2][0] > 100
assert li[2][1] > 100
assert li[3] == (100, 100)
def _init_arch(x0, y0, x1, y1, theta, unit):
"""Return a list of points to make an approximate arch."""
xy = []
half = unit / 2.0
p0 = ((x0 + half * math.sin(theta), y0 - half * math.cos(theta)))
p1 = ((x1 + half * math.sin(theta), y1 - half * math.cos(theta)))
xy = []
xy.append((x0, y0))
xy.append(p0)
arcpoints = guiutils.get_semicircle_points(p0[0], p0[1], p1[0], p1[1], 10)
xy.extend(arcpoints)
xy.append(p1)
xy.append((x1, y1))
return xy
def _init_arch(x0, y0, x1, y1, theta, unit):
"""Return a list of points to make an approximate arch."""
xy = []
half = unit / 2.0
p0 = ((x0 + half * math.sin(theta), y0 - half * math.cos(theta)))
p1 = ((x1 + half * math.sin(theta), y1 - half * math.cos(theta)))
xy = []
xy.append((x0, y0))
xy.append(p0)
arcpoints = guiutils.get_semicircle_points(p0[0], p0[1], p1[0], p1[1], 10)
xy.extend(arcpoints)
xy.append(p1)
xy.append((x1, y1))
return xy
