def test_override_bounds_copy():
# Get the bounds of a Paper, modify them, then set them back changed.
paper = Paper()
paper.override_bounds(0, 0, 1, 1)
bounds = paper.bounds()
bounds.right = 5
assert_equal(paper.bounds(), Bounds(0, 0, 1, 1))
paper.override_bounds(bounds)
assert_equal(paper.bounds(), Bounds(0, 0, 5, 1))
# This works on non-overridden Papers as well.
paper = Paper()
p = Pen()
p.fill_mode()
p.move_to((0.5, 0.5))
p.circle(0.5)
bounds = p.paper.bounds()
bounds.right = 5
assert_equal(p.paper.bounds(), Bounds(0, 0, 1, 1))
p.paper.override_bounds(bounds)
assert_equal(p.paper.bounds(), Bounds(0, 0, 5, 1))
def test_text_merge():
p = Pen()
p.move_to((0, 0))
p.text('abcd', 1)
paper1 = p.paper
assert '<text' in paper1.format_svg(0)
paper2 = Paper()
paper2.merge(paper1)
assert '<text' in paper2.format_svg(0)
paper3 = Paper()
paper3.merge_under(paper1)
assert '<text' in paper3.format_svg(0)
def draw_character(self, mode, **kwargs):
side_ending = self.side_ending_class(
self,
self.side_flipped,
)
paper = Paper()
pen = Pen()
pen.set_mode(mode)
pen.move_to((0, TOP - mode.width / 2))
pen.turn_to(0)
pen.line_forward(2.0)
pen.last_segment().start_cap = stub_cap
side_ending.draw(pen)
paper.merge(pen.paper)
bounds = paper.bounds()
bounds.top = OVER
bounds.bottom = MIDDLE
bounds.left = 0
paper.override_bounds(bounds)
return paper
def test_mirror_bounds():
paper = Paper()
paper.override_bounds(0, 0, 1, 1)
paper.mirror_x(2)
assert_equal(paper.bounds(), Bounds(3, 0, 4, 1))
paper.mirror_y(-1)
assert_equal(paper.bounds(), Bounds(3, -3, 4, -2))
def test_copy_override_bounds():
paper1 = Paper()
paper1.override_bounds(0, 0, 1, 1)
paper2 = paper1.copy()
assert_equal(
paper2.bounds(),
Bounds(0, 0, 1, 1),
)
def test_two_pens_one_paper():
paper = Paper()
p1 = Pen(paper)
p2 = Pen(paper)
p1.fill_mode()
p2.fill_mode()
p1.move_to((0, 0))
p2.move_to((0, 0))
p1.line_to((0, 1))
p2.line_to((2, 0))
assert_path_data(paper, 0, ['M0,0 L0,-1', 'M0,0 L2,0'])
def test_override_bounds():
# Test that the view box gets set correctly.
paper = Paper()
paper.override_bounds(0, 0, 8, 11)
# The view box is transformed into svg coordinates by flipping the
# Y-coordinate and adjusting for height.
svg_data = paper.format_svg()
assert 'viewBox="0 -11 8 11"' in svg_data
paper.override_bounds(-10, -10, 10, 10)
svg_data = paper.format_svg()
assert 'viewBox="-10 -10 20 20"' in svg_data
def test_translate_override_bounds():
# Translate a paper that has overridden bounds. The bounds update as well.
paper = Paper()
paper.override_bounds(0, 0, 1, 1)
paper.translate((3, 4))
assert_equal(paper.bounds(), Bounds(3, 4, 4, 5))
# When bounds=False is passed, then the bounds do not update.
paper = Paper()
paper.override_bounds(0, 0, 1, 1)
paper.translate((3, 4), bounds=False)
assert_equal(paper.bounds(), Bounds(0, 0, 1, 1))
# This also works if the bounds are not overridden.
p = Pen()
p.fill_mode()
p.move_to((0.5, 0.5))
p.circle(0.5)
assert_equal(p.paper.bounds(), Bounds(0, 0, 1, 1))
p.paper.translate((3, 4), bounds=False)
assert_equal(p.paper.bounds(), Bounds(0, 0, 1, 1))
assert_equal(p.last_path().bounds(), Bounds(3, 4, 4, 5))
def test_paper_merge():
# Merge two drawings together.
paper = Paper()
p = Pen()
p.fill_mode()
p.turn_to(0)
p.arc_left(180, 5)
p.paper.center_on_x(0)
paper.merge(p.paper)
p = Pen()
p.fill_mode()
p.turn_to(180)
p.arc_left(180, 5)
p.paper.center_on_x(0)
paper.merge(p.paper)
assert_path_data(paper, 1, [
'M-2.5,0.0 A 5.0,5.0 0 0 0 -2.5,-10.0',
'M2.5,0.0 A 5.0,5.0 0 0 0 2.5,10.0',
])
def test_mirror_end_slant():
paper = Paper()
p = Pen()
p.stroke_mode(sqrt2)
p.move_to((0, 0))
p.turn_to(-45)
p.line_forward(5 * sqrt2, end_slant=45)
p.paper.mirror_x(0)
paper.merge(p.paper)
p = Pen()
p.stroke_mode(sqrt2)
p.move_to((0, 0))
p.turn_to(45)
p.line_forward(5 * sqrt2)
paper.merge(p.paper)
paper.join_paths()
paper.fuse_paths()
assert_path_data(paper, 1,
'M-5.5,4.5 L-4.5,5.5 L5.5,-4.5 L4.5,-5.5 L-5.5,4.5 z')
def test_format_empty_bounds():
paper = Paper()
svg_data = paper.format_svg()
assert 'viewBox="-10 -10 20 20"' in svg_data
def test_merge_bounds():
def draw():
p = Pen()
p.fill_mode()
p.move_to((0, 0))
p.circle(2)
paper1 = p.paper
p = Pen()
p.fill_mode()
p.move_to((3, 0))
p.circle(1)
paper2 = p.paper
return paper1, paper2
# Empty papers, no overridden bounds.
paper1 = Paper()
paper2 = Paper()
paper1.merge(paper2)
assert_raises(ValueError, lambda: paper1.bounds())
# Empty papers with overridden bounds on both sides.
paper1 = Paper()
paper1.override_bounds(0, 0, 1, 1)
paper2 = Paper()
paper2.override_bounds(1, 0, 2, 1)
paper1.merge(paper2)
assert_equal(paper1.bounds(), Bounds(0, 0, 2, 1))
# No bounds overriding or merging.
paper1, paper2 = draw()
assert_equal(paper1.bounds(), Bounds(-2, -2, 2, 2))
assert_equal(paper2.bounds(), Bounds(2, -1, 4, 1))
# Merge with no overriding.
paper1, paper2 = draw()
paper1.merge(paper2)
assert_equal(paper1.bounds(), Bounds(-2, -2, 4, 2))
# Override the top one.
paper1, paper2 = draw()
paper2.override_bounds(-1, -1, 1, 1)
paper1.merge(paper2)
assert_equal(paper1.bounds(), Bounds(-2, -2, 2, 2))
# Override the bottom one.
paper1, paper2 = draw()
bounds = paper1.bounds()
bounds.top = 10
paper1.override_bounds(bounds)
paper1.merge(paper2)
assert_equal(paper1.bounds(), Bounds(-2, -2, 4, 10))
# Empty bounds on bottom page.
paper1, paper2 = draw()
paper1.override_bounds(-1, -1, 1, 1)
paper3 = Paper()
paper3.merge(paper1)
assert_equal(paper3.bounds(), Bounds(-1, -1, 1, 1))
# Empty bounds on top page.
paper1, paper2 = draw()
paper3 = Paper()
paper1.override_bounds(-1, -1, 1, 1)
paper1.merge(paper3)
assert_equal(paper1.bounds(), Bounds(-1, -1, 1, 1))
def test_empty_bounds():
assert_raises(ValueError, lambda: Paper().bounds())
def draw_character(self, mode, fuse=True):
paper = Paper()
top_ending = self.top_ending_class(
self,
self.top_straight,
self.top_flipped,
)
bottom_ending = self.bottom_ending_class(
self,
self.bottom_straight,
self.bottom_flipped,
)
# While drawing the body of the primary character, two copies of the
# pen are created, one ready to draw each of the endings.
pen = Pen()
pen.set_mode(mode)
top_pen, bottom_pen = self.draw(pen)
top_start_position = top_pen.position
bottom_start_position = bottom_pen.position
# Draw the endings.
# If the ending orientations are to the left, then we have to flip them
# horizontally.
# The top ending is drawn as if it were a bottom ending, so
# mirror it to the top.
if self.top_flipped:
top_pen.turn_to(top_pen.heading.flipped_x())
top_pen.move_to(top_pen.position.flipped_y(MIDDLE))
top_pen.turn_to(top_pen.heading.flipped_y())
top_ending.draw(top_pen)
top_pen.paper.mirror_y(MIDDLE)
if self.top_flipped:
top_pen.paper.mirror_x(top_start_position.x)
if self.bottom_flipped:
bottom_pen.turn_to(bottom_pen.heading.flipped_x())
bottom_ending.draw(bottom_pen)
if self.bottom_flipped:
bottom_pen.paper.mirror_x(bottom_start_position.x)
paper.merge(pen.paper)
paper.merge(top_pen.paper)
paper.merge(bottom_pen.paper)
if fuse:
paper.join_paths()
paper.fuse_paths()
# Override the bounds so that the letter reaches the full line height.
bounds = paper.bounds()
bounds.bottom = UNDER
bounds.top = OVER
paper.override_bounds(bounds)
# We need to center on x=0 here because otherwise flipped
# consonants wouldn't flip at the right x value.
paper.center_on_x(0)
return paper
def draw_character(self, mode, fuse=True):
side_ending = self.side_ending_class(self, self.side_flipped)
bottom_ending = self.bottom_ending_class(
self,
self.bottom_straight,
self.bottom_flipped,
)
paper = Paper()
# When drawing the body of the consonant, subclasses will start
# where the side ending is, and end where the bottom ending is.
pen = Pen()
pen.set_mode(mode)
pen.move_to((0, TOP - pen.mode.width / 2))
side_ending_position = pen.position
self.draw(pen)
bottom_ending_position = pen.position
bottom_ending_heading = pen.heading
paper.merge(pen.paper)
# Draw the side ending.
pen = Pen()
pen.set_mode(mode)
pen.move_to(side_ending_position)
pen.turn_to(0)
side_ending.draw(pen)
paper.merge(pen.paper)
# Draw the bottom ending.
pen = Pen()
pen.set_mode(mode)
pen.move_to(bottom_ending_position)
# If the bottom orientation is slanted left, then we have to
# start the bottom ending from a flipped heading so when it flips
# again later it will be correct.
if not self.bottom_straight and self.bottom_flipped:
bottom_ending_heading = bottom_ending_heading.flipped_x()
pen.turn_to(bottom_ending_heading)
# Draw the ending, and maybe flip it horizontally.
bottom_ending.draw(pen)
if not self.bottom_straight and self.bottom_flipped:
pen.paper.mirror_x(bottom_ending_position.x)
paper.merge(pen.paper)
if fuse:
paper.join_paths()
paper.fuse_paths()
# Override the bounds so that the letter reaches the full line height.
bounds = paper.bounds()
bounds.bottom = UNDER
bounds.top = OVER
paper.override_bounds(bounds)
# We need to center on x=0 here because otherwise flipped
# consonants wouldn't flip at the right x value.
paper.center_on_x(0)
return paper
