def test_translate():
p = Pen()
p.stroke_mode(1.0)
p.move_to((0, 0))
p.turn_to(0)
p.line_forward(3)
p.arc_left(90, 3)
p.turn_left(90)
p.move_forward(3)
p.fill_mode()
p.circle(0.5)
p.move_forward(3)
p.square(1)
p.paper.translate((1, 1))
assert_equal(
p.paper.svg_elements(1),
[
(
'<path d="M1.0,-1.5 L1.0,-0.5 L4.0,-0.5 A 3.5,3.5 0 0 0 '
'7.5,-4.0 L6.5,-4.0 A 2.5,2.5 0 0 1 4.0,-1.5 L1.0,-1.5 z" '
'fill="#000000" />'
),
(
'<path d="M4.5,-4.0 A 0.5,0.5 0 0 0 3.5,-4.0 '
'A 0.5,0.5 0 0 0 4.5,-4.0 z" fill="#000000" />'
),
(
'<path d="M0.5,-3.5 L1.5,-3.5 L1.5,-4.5 L0.5,-4.5 L0.5,-3.5 z" '
'fill="#000000" />'
),
]
)
def test_fuse_with_joint():
p = Pen()
p.stroke_mode(2.0)
p.move_to((0, 0))
p.turn_to(180)
p.line_forward(5)
p.turn_left(90)
p.line_forward(5)
p.break_stroke()
p.move_to((0, 0))
p.turn_to(0)
p.line_forward(5)
assert_path_data(
p, 0,
[
'M0,1 L0,-1 L-6,-1 L-6,5 L-4,5 L-4,1 L0,1 z',
'M0,-1 L0,1 L5,1 L5,-1 L0,-1 z',
]
)
p.paper.join_paths()
p.paper.fuse_paths()
assert_path_data(
p, 0,
'M-6,5 L-4,5 L-4,1 L5,1 L5,-1 L-6,-1 L-6,5 z'
)
def test_translate():
p = Pen()
p.stroke_mode(1.0)
p.move_to((0, 0))
p.turn_to(0)
p.line_forward(3)
p.arc_left(90, 3)
p.turn_left(90)
p.move_forward(3)
p.fill_mode()
p.circle(0.5)
p.move_forward(3)
p.square(1)
p.paper.translate((1, 1))
assert_equal(p.paper.svg_elements(1), [
('<path d="M1.0,-1.5 L1.0,-0.5 L4.0,-0.5 A 3.5,3.5 0 0 0 '
'7.5,-4.0 L6.5,-4.0 A 2.5,2.5 0 0 1 4.0,-1.5 L1.0,-1.5 z" '
'fill="#000000" />'),
('<path d="M4.5,-4.0 A 0.5,0.5 0 0 0 3.5,-4.0 '
'A 0.5,0.5 0 0 0 4.5,-4.0 z" fill="#000000" />'),
('<path d="M0.5,-3.5 L1.5,-3.5 L1.5,-4.5 L0.5,-4.5 L0.5,-3.5 z" '
'fill="#000000" />'),
])
def test_fuse_with_joint():
p = Pen()
p.stroke_mode(2.0)
p.move_to((0, 0))
p.turn_to(180)
p.line_forward(5)
p.turn_left(90)
p.line_forward(5)
p.break_stroke()
p.move_to((0, 0))
p.turn_to(0)
p.line_forward(5)
assert_path_data(p, 0, [
'M0,1 L0,-1 L-6,-1 L-6,5 L-4,5 L-4,1 L0,1 z',
'M0,-1 L0,1 L5,1 L5,-1 L0,-1 z',
])
p.paper.join_paths()
p.paper.fuse_paths()
assert_path_data(p, 0, 'M-6,5 L-4,5 L-4,1 L5,1 L5,-1 L-6,-1 L-6,5 z')
def test_join_paths_thick():
# Segments join together if possible when join_paths is called.
p = Pen()
p.stroke_mode(2.0)
p.move_to((0, 0))
p.turn_to(0)
p.line_forward(5)
p.break_stroke()
p.turn_left(90)
p.line_forward(5)
p.paper.join_paths()
assert_path_data(p, 0, 'M0,-1 L0,1 L6,1 L6,-5 L4,-5 L4,-1 L0,-1 z')
def test_join_paths_thick():
# Segments join together if possible when join_paths is called.
p = Pen()
p.stroke_mode(2.0)
p.move_to((0, 0))
p.turn_to(0)
p.line_forward(5)
p.break_stroke()
p.turn_left(90)
p.line_forward(5)
p.paper.join_paths()
assert_path_data(
p, 0,
'M0,-1 L0,1 L6,1 L6,-5 L4,-5 L4,-1 L0,-1 z'
)
def test_copy_custom_cap():
# Regression test for a bug where doing pen.copy() in a cap function would
# break outline drawing.
p = Pen()
p.stroke_mode(2.0)
p.move_to((0, 0))
p.turn_to(0)
p.line_forward(5)
p.turn_left(90)
p.line_forward(5)
def copy_cap(pen, end):
pen.copy()
pen.line_to(end)
p.last_segment().end_cap = copy_cap
assert_path_data(p, 0, 'M0,-1 L0,1 L6,1 L6,-5 L4,-5 L4,-1 L0,-1 z')
def test_copy_custom_cap():
# Regression test for a bug where doing pen.copy() in a cap function would
# break outline drawing.
p = Pen()
p.stroke_mode(2.0)
p.move_to((0, 0))
p.turn_to(0)
p.line_forward(5)
p.turn_left(90)
p.line_forward(5)
def copy_cap(pen, end):
pen.copy()
pen.line_to(end)
p.last_segment().end_cap = copy_cap
assert_path_data(
p, 0,
'M0,-1 L0,1 L6,1 L6,-5 L4,-5 L4,-1 L0,-1 z'
)
def test_arc_segment_bounds():
# Arc which occupies its entire circle.
p = Pen()
p.fill_mode()
p.move_to((1, 0))
p.turn_to(90)
p.arc_left(359, 1)
arc = p.last_segment()
assert_equal(
arc.bounds(),
Bounds(-1, -1, 1, 1)
)
# Arc which pushes the boundary only with the endpoints.
p = Pen()
p.fill_mode()
p.move_to((0, 0))
p.turn_to(30)
p.move_forward(1)
p.turn_left(90)
p.arc_left(30, center=(0, 0))
arc = p.last_segment()
assert_equal(
arc.bounds(),
Bounds(0.5, 0.5, sqrt3 / 2, sqrt3 / 2)
)
# Arc which pushes the boundary with the middle in one spot.
p = Pen()
p.fill_mode()
p.move_to((0, 0))
p.turn_to(-45)
p.move_forward(1)
p.turn_left(90)
p.arc_left(90, center=(0, 0))
arc = p.last_segment()
assert_equal(
arc.bounds(),
Bounds(sqrt2 / 2, -sqrt2 / 2, 1, sqrt2 / 2)
)
# Arc which goes right.
p = Pen()
p.fill_mode()
p.move_to((0, 0))
p.turn_to(45)
p.arc_right(90, 3)
arc = p.last_segment()
assert_equal(
arc.bounds(),
Bounds(0, 0, 3 * sqrt2, 3 - 1.5 * sqrt2)
)
# Arc which pushes the boundary with the middle in two spots.
p = Pen()
p.fill_mode()
p.move_to((0, 0))
p.turn_to(-45)
p.move_forward(1)
p.turn_left(90)
p.arc_left(180, center=(0, 0))
arc = p.last_segment()
assert_equal(
arc.bounds(),
Bounds(-sqrt2 / 2, -sqrt2 / 2, 1, 1)
)
# Half circle, right side
p = Pen()
p.fill_mode()
p.move_to((0, 0))
p.turn_to(0)
p.arc_right(180, 5)
arc = p.last_segment()
assert_equal(
arc.bounds(),
Bounds(0, -10, 5, 0)
)
# Thick circle,
p = Pen()
p.stroke_mode(1.0)
p.move_to((0, 0))
p.turn_to(0)
p.move_forward(5)
p.turn_left(90)
p.arc_left(180, 5, start_slant=45)
arc = p.last_segment()
assert_equal(
arc.bounds(),
Bounds(-5.5, -0.5314980314970469, 5.5, 5.5)
)
from canoepaddle import Pen
p = Pen()
p.fill_mode('green')
p.move_to((0, 0))
p.turn_to(0)
radius = 0.01
for _ in range(200):
p.circle(radius)
p.turn_left(20)
new_radius = radius * 1.05
p.move_forward(radius + new_radius)
radius = new_radius
print(p.paper.format_svg())
