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_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 draw_letter(
letter,
mode,
fixed_width=None,
show_template=False,
show_bounds=False,
fuse=True,
):
"""
Draw the given letter and return a Paper.
The letter is located centered on x=0, and with y=0 as the
character baseline.
If `fixed_width` is specified, use that for the paper width.
"""
if DEBUG_OUTPUT:
print(str(letter), file=sys.stderr)
try:
character_paper = letter.draw_character(mode, fuse=fuse)
except Exception:
if DEBUG_OUTPUT:
traceback.print_exc()
# Return an error pattern.
pen = Pen()
pen.fill_mode()
pen.square(1)
character_paper = pen.paper
else:
raise
if fixed_width is not None:
bounds = character_paper.bounds()
bounds.left = -fixed_width / 2
bounds.right = +fixed_width / 2
character_paper.override_bounds(bounds)
template_paper = Paper()
if show_template:
template_paper = draw_template_path()
else:
template_paper = Paper()
letter_paper = Paper()
letter_paper.merge(template_paper)
letter_paper.merge(character_paper)
# Set proper bounds for typesetting. Use the character bounds as our basis
# so the template doesn't increase the size.
bounds = character_paper.bounds()
letter_paper.override_bounds(bounds)
if show_bounds:
pen = Pen()
pen.fill_mode('#aaa')
bounds.draw(pen)
letter_paper.merge_under(pen.paper)
return letter_paper
def test_square_bounds():
p = Pen()
p.fill_mode()
p.move_to((1, 1))
p.square(4)
assert_equal(
p.paper.bounds(),
Bounds(-1, -1, 3, 3)
)
def test_join_paths_loop():
# Already looped paths should not be affected by join_paths.
p = Pen()
p.fill_mode()
p.move_to((0, 0))
p.square(2)
target = 'M-1,1 L1,1 L1,-1 L-1,-1 L-1,1 z'
assert_path_data(p, 0, target)
p.paper.join_paths()
assert_path_data(p, 0, target)
# Loops can also be created by joining paths.
p = Pen()
p.fill_mode()
p.move_to((0, 0))
p.line_to((1, 0))
p.line_to((1, 1))
p.break_stroke()
p.line_to((0, 1))
p.line_to((0, 0))
p.paper.join_paths()
assert_path_data(
p, 0,
'M1,-1 L1,0 L0,0 L0,-1 L1,-1 z'
)
# The joins can get complicated.
p = Pen()
p.fill_mode()
p.move_to((3, 0))
p.line_to((2, 0))
p.break_stroke()
p.move_to((1, 0))
p.line_to((2, 2))
p.break_stroke()
p.move_to((4, 0))
p.line_to((3, 0))
p.break_stroke()
p.move_to((1, 0))
p.line_to((2, 0))
p.break_stroke()
p.move_to((4, 0))
p.line_to((2, 2))
p.paper.join_paths()
assert_path_data(
p, 0,
'M1,0 L2,-2 L4,0 L3,0 L2,0 L1,0 z',
)
def test_join_paths_loop():
# Already looped paths should not be affected by join_paths.
p = Pen()
p.fill_mode()
p.move_to((0, 0))
p.square(2)
target = 'M-1,1 L1,1 L1,-1 L-1,-1 L-1,1 z'
assert_path_data(p, 0, target)
p.paper.join_paths()
assert_path_data(p, 0, target)
# Loops can also be created by joining paths.
p = Pen()
p.fill_mode()
p.move_to((0, 0))
p.line_to((1, 0))
p.line_to((1, 1))
p.break_stroke()
p.line_to((0, 1))
p.line_to((0, 0))
p.paper.join_paths()
assert_path_data(p, 0, 'M1,-1 L1,0 L0,0 L0,-1 L1,-1 z')
# The joins can get complicated.
p = Pen()
p.fill_mode()
p.move_to((3, 0))
p.line_to((2, 0))
p.break_stroke()
p.move_to((1, 0))
p.line_to((2, 2))
p.break_stroke()
p.move_to((4, 0))
p.line_to((3, 0))
p.break_stroke()
p.move_to((1, 0))
p.line_to((2, 0))
p.break_stroke()
p.move_to((4, 0))
p.line_to((2, 2))
p.paper.join_paths()
assert_path_data(
p,
0,
'M1,0 L2,-2 L4,0 L3,0 L2,0 L1,0 z',
)
