def test_arc_no_joint():
# Try to create an impossible joint between arcs of different widths.
# It doesn't join.
p = Pen()
p.move_to((0, -5))
p.turn_to(0)
p.stroke_mode(1.0)
p.arc_to((5, 0), center=(0, 0))
p.stroke_mode(2.0)
p.arc_to((0, 5), center=(0, 0))
arc1, arc2 = p.last_path().segments
assert arc1.end_joint_illegal
assert arc2.start_joint_illegal
assert_path_data(
p, 1,
(
'M0.0,4.5 L0.0,5.5 A 5.5,5.5 0 0 0 5.5,0.0 L6.0,0.0 '
'A 6.0,6.0 0 0 0 0.0,-6.0 L0.0,-4.0 '
'A 4.0,4.0 0 0 1 4.0,0.0 L4.5,0.0 '
'A 4.5,4.5 0 0 1 0.0,4.5 z'
)
)
# Join two arcs together illegally, but don't make them concentric.
p = Pen()
p.move_to((0, -5))
p.turn_to(0)
p.stroke_mode(1.0)
p.arc_to((5, 0), center=(0, 0))
p.stroke_mode(2.0)
p.arc_to((0, 5), center=(0, 0.1))
arc1, arc2 = p.last_path().segments
assert arc1.end_joint_illegal
assert arc2.start_joint_illegal
assert_path_data(
p, 2,
(
'M0.00,4.50 L0.00,5.50 A 5.50,5.50 0 0 0 5.50,0.00 L6.00,0.02 '
'A 6.00,6.00 0 0 0 0.00,-6.10 L0.00,-4.10 '
'A 4.00,4.00 0 0 1 4.00,-0.02 L4.50,0.00 '
'A 4.50,4.50 0 0 1 0.00,4.50 z'
)
)
def test_arc_line_half_illegal_joint():
p = Pen()
p.stroke_mode(1.0)
p.move_to((0, 0))
p.line_to((1, 0))
p.turn_to(180 - 15)
p.arc_to((-1, 0))
line, arc = p.last_path().segments
assert line.end_joint_illegal
assert arc.start_joint_illegal
assert_path_data(p, 2,
('M0.00,-0.50 L0.00,0.50 L2.93,0.50 '
'A 4.36,4.36 0 0 0 -1.13,-0.48 L-0.87,0.48 '
'A 3.36,3.36 0 0 1 0.87,0.48 L1.00,-0.50 L0.00,-0.50 z'))
p = Pen()
p.stroke_mode(1.0)
p.move_to((-1, 0))
p.turn_to(15)
p.arc_to((1, 0))
p.line_to((0, 0))
arc, line = p.paper.paths[0].segments
assert arc.end_joint_illegal
assert line.start_joint_illegal
assert_path_data(p, 2,
('M-1.13,-0.48 L-0.87,0.48 A 3.36,3.36 0 0 1 0.87,0.48 '
'L1.00,-0.50 L0.00,-0.50 L0.00,0.50 L2.93,0.50 '
'A 4.36,4.36 0 0 0 -1.13,-0.48 z'))
def test_arc_no_joint():
# Try to create an impossible joint between arcs of different widths.
# It doesn't join.
p = Pen()
p.move_to((0, -5))
p.turn_to(0)
p.stroke_mode(1.0)
p.arc_to((5, 0), center=(0, 0))
p.stroke_mode(2.0)
p.arc_to((0, 5), center=(0, 0))
arc1, arc2 = p.last_path().segments
assert arc1.end_joint_illegal
assert arc2.start_joint_illegal
assert_path_data(p, 1,
('M0.0,4.5 L0.0,5.5 A 5.5,5.5 0 0 0 5.5,0.0 L6.0,0.0 '
'A 6.0,6.0 0 0 0 0.0,-6.0 L0.0,-4.0 '
'A 4.0,4.0 0 0 1 4.0,0.0 L4.5,0.0 '
'A 4.5,4.5 0 0 1 0.0,4.5 z'))
# Join two arcs together illegally, but don't make them concentric.
p = Pen()
p.move_to((0, -5))
p.turn_to(0)
p.stroke_mode(1.0)
p.arc_to((5, 0), center=(0, 0))
p.stroke_mode(2.0)
p.arc_to((0, 5), center=(0, 0.1))
arc1, arc2 = p.last_path().segments
assert arc1.end_joint_illegal
assert arc2.start_joint_illegal
assert_path_data(
p, 2, ('M0.00,4.50 L0.00,5.50 A 5.50,5.50 0 0 0 5.50,0.00 L6.00,0.02 '
'A 6.00,6.00 0 0 0 0.00,-6.10 L0.00,-4.10 '
'A 4.00,4.00 0 0 1 4.00,-0.02 L4.50,0.00 '
'A 4.50,4.50 0 0 1 0.00,4.50 z'))
def test_line_segments():
p = Pen()
p.fill_mode()
p.move_to((0, 0))
p.turn_to(45)
p.line_forward(2.0)
assert_points_equal(p.position, (sqrt2, sqrt2))
assert_equal(len(p.paper.paths), 1)
segments = p.last_path().segments
for actual, target in zip(segments, [
((0, 0), (sqrt2, sqrt2)),
]):
assert_segments_equal(actual, target)
def test_line_segments():
p = Pen()
p.fill_mode()
p.move_to((0, 0))
p.turn_to(45)
p.line_forward(2.0)
assert_points_equal(p.position, (sqrt2, sqrt2))
assert_equal(len(p.paper.paths), 1)
segments = p.last_path().segments
for actual, target in zip(segments, [
((0, 0), (sqrt2, sqrt2)),
]):
assert_segments_equal(actual, target)
def test_straight_offwidth_no_joint():
p = Pen()
p.move_to((0, 0))
p.turn_to(0)
p.stroke_mode(2.0)
p.line_forward(3)
p.stroke_mode(1.0)
p.line_forward(3)
line1, line2 = p.last_path().segments
assert line1.end_joint_illegal
assert line2.start_joint_illegal
assert_path_data(p, 1, ('M0.0,-1.0 L0.0,1.0 L3.0,1.0 L3.0,0.5 L6.0,0.5 '
'L6.0,-0.5 L3.0,-0.5 L3.0,-1.0 L0.0,-1.0 z'))
def test_turn_back_no_joint():
# Make a line turn back on itself, and it doesn't join.
p = Pen()
p.stroke_mode(1.0)
p.move_to((0, 0))
p.turn_to(0)
p.line_forward(10)
p.turn_right(180)
p.line_forward(5)
line1, line2 = p.last_path().segments
assert line1.end_joint_illegal
assert line2.start_joint_illegal
assert_path_data(p, 1,
('M0.0,-0.5 L0.0,0.5 L10.0,0.5 L10.0,-0.5 '
'L5.0,-0.5 L5.0,0.5 L10.0,0.5 L10.0,-0.5 L0.0,-0.5 z'))
def test_arc_arc_half_illegal_joint():
p = Pen()
p.move_to((0, -5))
p.turn_to(0)
p.stroke_mode(1.0)
p.arc_to((5, 0), center=(0, 0))
p.stroke_mode(2.0)
p.arc_to((10, 5), center=(10, 0))
arc1, arc2 = p.last_path().segments
assert arc1.end_joint_illegal
assert arc2.start_joint_illegal
assert_path_data(
p, 2, ('M0.00,4.50 L0.00,5.50 A 5.50,5.50 0 0 0 5.50,0.00 L6.00,0.00 '
'A 4.00,4.00 0 0 1 10.00,-4.00 L10.00,-6.00 '
'A 6.00,6.00 0 0 0 4.21,1.58 '
'A 4.50,4.50 0 0 1 0.00,4.50 z'))
def test_turn_back_no_joint():
# Make a line turn back on itself, and it doesn't join.
p = Pen()
p.stroke_mode(1.0)
p.move_to((0, 0))
p.turn_to(0)
p.line_forward(10)
p.turn_right(180)
p.line_forward(5)
line1, line2 = p.last_path().segments
assert line1.end_joint_illegal
assert line2.start_joint_illegal
assert_path_data(
p, 1,
(
'M0.0,-0.5 L0.0,0.5 L10.0,0.5 L10.0,-0.5 '
'L5.0,-0.5 L5.0,0.5 L10.0,0.5 L10.0,-0.5 L0.0,-0.5 z'
)
)
def test_straight_offwidth_no_joint():
p = Pen()
p.move_to((0, 0))
p.turn_to(0)
p.stroke_mode(2.0)
p.line_forward(3)
p.stroke_mode(1.0)
p.line_forward(3)
line1, line2 = p.last_path().segments
assert line1.end_joint_illegal
assert line2.start_joint_illegal
assert_path_data(
p, 1,
(
'M0.0,-1.0 L0.0,1.0 L3.0,1.0 L3.0,0.5 L6.0,0.5 '
'L6.0,-0.5 L3.0,-0.5 L3.0,-1.0 L0.0,-1.0 z'
)
)
def test_arc_line_half_illegal_joint():
p = Pen()
p.stroke_mode(1.0)
p.move_to((0, 0))
p.line_to((1, 0))
p.turn_to(180 - 15)
p.arc_to((-1, 0))
line, arc = p.last_path().segments
assert line.end_joint_illegal
assert arc.start_joint_illegal
assert_path_data(
p, 2,
(
'M0.00,-0.50 L0.00,0.50 L2.93,0.50 '
'A 4.36,4.36 0 0 0 -1.13,-0.48 L-0.87,0.48 '
'A 3.36,3.36 0 0 1 0.87,0.48 L1.00,-0.50 L0.00,-0.50 z'
)
)
p = Pen()
p.stroke_mode(1.0)
p.move_to((-1, 0))
p.turn_to(15)
p.arc_to((1, 0))
p.line_to((0, 0))
arc, line = p.paper.paths[0].segments
assert arc.end_joint_illegal
assert line.start_joint_illegal
assert_path_data(
p, 2,
(
'M-1.13,-0.48 L-0.87,0.48 A 3.36,3.36 0 0 1 0.87,0.48 '
'L1.00,-0.50 L0.00,-0.50 L0.00,0.50 L2.93,0.50 '
'A 4.36,4.36 0 0 0 -1.13,-0.48 z'
)
)
def test_arc_arc_half_illegal_joint():
p = Pen()
p.move_to((0, -5))
p.turn_to(0)
p.stroke_mode(1.0)
p.arc_to((5, 0), center=(0, 0))
p.stroke_mode(2.0)
p.arc_to((10, 5), center=(10, 0))
arc1, arc2 = p.last_path().segments
assert arc1.end_joint_illegal
assert arc2.start_joint_illegal
assert_path_data(
p, 2,
(
'M0.00,4.50 L0.00,5.50 A 5.50,5.50 0 0 0 5.50,0.00 L6.00,0.00 '
'A 4.00,4.00 0 0 1 10.00,-4.00 L10.00,-6.00 '
'A 6.00,6.00 0 0 0 4.21,1.58 '
'A 4.50,4.50 0 0 1 0.00,4.50 z'
)
)
def test_too_sharp_joint():
# Joint is considered too sharp, so the joint is not made.
p = Pen()
p.stroke_mode(1.0)
p.move_to((0, 0))
p.turn_to(0)
p.line_forward(10)
p.turn_left(175)
p.line_forward(10)
line1, line2 = p.last_path().segments
assert line1.end_joint_illegal
assert line2.start_joint_illegal
assert_path_data(
p, 2, ('M0.00,-0.50 L0.00,0.50 L10.00,0.50 L10.04,-0.50 L0.08,-1.37 '
'L-0.01,-0.37 L9.96,0.50 L10.00,-0.50 L0.00,-0.50 z'))
p = Pen()
p.stroke_mode(1.0)
p.move_to((0, 0))
p.turn_to(0)
p.line_forward(10)
p.turn_right(175)
p.line_forward(10)
line1, line2 = p.last_path().segments
assert line1.end_joint_illegal
assert line2.start_joint_illegal
assert_path_data(
p, 2, ('M0.00,-0.50 L0.00,0.50 L10.00,0.50 L9.96,-0.50 L-0.01,0.37 '
'L0.08,1.37 L10.04,0.50 L10.00,-0.50 L0.00,-0.50 z'))
# Joint is considered too sharp, so the outside is not drawn, but the
# inside joint works.
p = Pen()
p.stroke_mode(1.0)
p.move_to((0, 0))
p.turn_to(0)
p.line_forward(20)
p.turn_left(175)
p.line_forward(20)
line1, line2 = p.last_path().segments
assert line1.end_joint_illegal
assert line2.start_joint_illegal
assert_path_data(p, 2,
('M0.00,-0.50 L0.00,0.50 L20.00,0.50 L20.04,-0.50 '
'L0.12,-2.24 L0.03,-1.25 L8.55,-0.50 L0.00,-0.50 z'))
p = Pen()
p.stroke_mode(1.0)
p.move_to((0, 0))
p.turn_to(0)
p.line_forward(20)
p.turn_right(175)
p.line_forward(20)
line1, line2 = p.last_path().segments
assert line1.end_joint_illegal
assert line2.start_joint_illegal
assert_path_data(p, 2,
('M0.00,-0.50 L0.00,0.50 L8.55,0.50 L0.03,1.25 '
'L0.12,2.24 L20.04,0.50 L20.00,-0.50 L0.00,-0.50 z'))
def test_too_sharp_joint():
# Joint is considered too sharp, so the joint is not made.
p = Pen()
p.stroke_mode(1.0)
p.move_to((0, 0))
p.turn_to(0)
p.line_forward(10)
p.turn_left(175)
p.line_forward(10)
line1, line2 = p.last_path().segments
assert line1.end_joint_illegal
assert line2.start_joint_illegal
assert_path_data(
p, 2,
(
'M0.00,-0.50 L0.00,0.50 L10.00,0.50 L10.04,-0.50 L0.08,-1.37 '
'L-0.01,-0.37 L9.96,0.50 L10.00,-0.50 L0.00,-0.50 z'
)
)
p = Pen()
p.stroke_mode(1.0)
p.move_to((0, 0))
p.turn_to(0)
p.line_forward(10)
p.turn_right(175)
p.line_forward(10)
line1, line2 = p.last_path().segments
assert line1.end_joint_illegal
assert line2.start_joint_illegal
assert_path_data(
p, 2,
(
'M0.00,-0.50 L0.00,0.50 L10.00,0.50 L9.96,-0.50 L-0.01,0.37 '
'L0.08,1.37 L10.04,0.50 L10.00,-0.50 L0.00,-0.50 z'
)
)
# Joint is considered too sharp, so the outside is not drawn, but the
# inside joint works.
p = Pen()
p.stroke_mode(1.0)
p.move_to((0, 0))
p.turn_to(0)
p.line_forward(20)
p.turn_left(175)
p.line_forward(20)
line1, line2 = p.last_path().segments
assert line1.end_joint_illegal
assert line2.start_joint_illegal
assert_path_data(
p, 2,
(
'M0.00,-0.50 L0.00,0.50 L20.00,0.50 L20.04,-0.50 '
'L0.12,-2.24 L0.03,-1.25 L8.55,-0.50 L0.00,-0.50 z'
)
)
p = Pen()
p.stroke_mode(1.0)
p.move_to((0, 0))
p.turn_to(0)
p.line_forward(20)
p.turn_right(175)
p.line_forward(20)
line1, line2 = p.last_path().segments
assert line1.end_joint_illegal
assert line2.start_joint_illegal
assert_path_data(
p, 2,
(
'M0.00,-0.50 L0.00,0.50 L8.55,0.50 L0.03,1.25 '
'L0.12,2.24 L20.04,0.50 L20.00,-0.50 L0.00,-0.50 z'
)
)
