def test_intersection_roundingerror(self):
# ref #2983, #5568
v1 = (25.0, 200.0)
v2 = (25.0, 400.0)
v3 = (36.75, 300.0)
result = [25.0, 300.0]
def almost(a, b):
# 300.0 sometimes is 299.9.. or 300.1.. however
# we just want to know that it's really close
self.assertIsNotNone(a)
self.assertIsNotNone(b)
self.assertAlmostEqual(a[0], b[0], places=0)
self.assertAlmostEqual(a[1], b[1], places=0)
for i in range(1, 100):
st = "6.4" + "9" * i
v = (float(st), 300.0)
almost(result, Vector.segment_intersection(v1, v2, v3, v))
for i in range(1, 100):
st = "6.1" + "1" * i
v = (float(st), 300.0)
almost(result, Vector.segment_intersection(v1, v2, v3, v))
for i in range(1, 100):
st = "6.4" + "4" * i
v = (float(st), 300.0)
almost(result, Vector.segment_intersection(v1, v2, v3, v))
for i in range(1, 100):
st = "300.4" + "9" * i
v = (6.5, float(st))
almost(result, Vector.segment_intersection(v1, v2, v3, v))
def test_intersection_roundingerror(self):
# ref #2983, #5568
v1 = (25.0, 200.0)
v2 = (25.0, 400.0)
v3 = (36.75, 300.0)
result = [25.0, 300.0]
def almost(a, b):
# 300.0 sometimes is 299.9.. or 300.1.. however
# we just want to know that it's really close
self.assertIsNotNone(a)
self.assertIsNotNone(b)
self.assertAlmostEqual(a[0], b[0], places=0)
self.assertAlmostEqual(a[1], b[1], places=0)
for i in range(1, 100):
st = "6.4" + "9" * i
v = (float(st), 300.0)
almost(result, Vector.segment_intersection(v1, v2, v3, v))
for i in range(1, 100):
st = "6.1" + "1" * i
v = (float(st), 300.0)
almost(result, Vector.segment_intersection(v1, v2, v3, v))
for i in range(1, 100):
st = "6.4" + "4" * i
v = (float(st), 300.0)
almost(result, Vector.segment_intersection(v1, v2, v3, v))
for i in range(1, 100):
st = "300.4" + "9" * i
v = (6.5, float(st))
almost(result, Vector.segment_intersection(v1, v2, v3, v))
def update_arrow(self, _dt):
if not self.stones_center:
return
sx, sy = self.stones_center
cw, ch = self.camera.size
cw = float(cw)
ch = float(ch)
lines = [[(50, -100), (50, ch + 100)],
[(-100, ch - 50), (cw + 100, ch - 50)],
[(cw - 50, ch + 100), (cw - 50, -100)],
[(cw + 100, 50), (- 100, 50)]]
wcx, wcy = self.camera.get_camera_center()
arrow_tip = None
for v1, v2 in lines:
# line of boundary in world coordinates
wv1 = self.camera.convert_from_screen_to_world(v1)
wv2 = self.camera.convert_from_screen_to_world(v2)
# line from center camera to center of stones
ws1 = (float(wcx), float(wcy))
ws2 = (float(sx), float(sy))
# intersection between them
intersection = Vector.segment_intersection(wv1, wv2, ws1, ws2)
if intersection:
arrow_tip = intersection
self.arrow_angle = (Vector(ws2) - (ws1)).angle((0, 100))
break
self.arrow_tip = arrow_tip
def collide_rectangle(self, rect):
# check if any sides intersect
for s_side in self.get_sides():
for r_side in rect.get_sides():
if Vector.segment_intersection(s_side[0], s_side[1], r_side[0],
r_side[1]) is not None:
return True
# check if all rect vertexes are inside self
for v_r in rect.get_vertexes():
if not self.collide_point(v_r):
return False
# rect is inside the rectangle
return True
def collide_line_segment(self, v1, v2):
for side in self.get_sides():
if Vector.segment_intersection(side[0], side[1], v1,
v2) is not None:
return True
return self.collide_point(v1) and self.collide_point(v2)
