def simplified_text_chunks(
text: AnyText,
out: Backend,
*,
font: fonts.Font = None,
debug_draw_rect: bool = False
) -> Iterable[Tuple[str, Matrix44, float]]:
""" Splits a complex text entity into simple chunks of text which can all be
rendered the same way:
render the string (which will not contain any newlines) with the given
cap_height with (left, baseline) at (0, 0) then transform it with the given
matrix to move it into place.
"""
alignment = _get_alignment(text)
box_width = _get_text_width(text)
cap_height = _get_cap_height(text)
lines = _split_into_lines(
text, box_width,
lambda s: out.get_text_line_width(s, cap_height, font=font))
line_spacing = _get_line_spacing(text, cap_height)
line_widths = [
out.get_text_line_width(line, cap_height, font=font) for line in lines
]
font_measurements = out.get_font_measurements(cap_height, font=font)
anchor, line_xs, line_ys = \
_apply_alignment(alignment, line_widths, line_spacing, box_width,
font_measurements)
rotation = _get_rotation(text)
# first_line_width is used for TEXT, ATTRIB and ATTDEF stretching
if line_widths:
first_line_width = line_widths[0]
else: # no text lines -> no output, value is not important
first_line_width = 1.0
extra_transform = _get_extra_transform(text, first_line_width)
insert = _get_wcs_insert(text)
whole_text_transform = (
Matrix44.translate(-anchor[0], -anchor[1], 0) @ extra_transform
@ rotation @ Matrix44.translate(*insert.xyz))
for i, (line, line_x, line_y) in enumerate(zip(lines, line_xs, line_ys)):
transform = Matrix44.translate(line_x, line_y,
0) @ whole_text_transform
yield line, transform, cap_height
if debug_draw_rect:
width = out.get_text_line_width(line, cap_height, font)
ps = list(
transform.transform_vertices([
Vec3(0, 0, 0),
Vec3(width, 0, 0),
Vec3(width, cap_height, 0),
Vec3(0, cap_height, 0),
Vec3(0, 0, 0)
]))
draw_rect(ps, '#ff0000', out)
def simplified_text_chunks(text: AnyText, out: Backend,
*,
debug_draw_rect: bool = False) -> Iterable[Tuple[str, Matrix44, float]]:
"""
Splits a complex text entity into simple chunks of text which can all be rendered the same way:
render the string (which will not contain any newlines) with the given cap_height with (left, baseline) at (0, 0)
then transform it with the given matrix to move it into place.
"""
alignment = _get_alignment(text)
box_width = _get_text_width(text)
cap_height = _get_cap_height(text)
lines = _split_into_lines(text, box_width, lambda s: out.get_text_line_width(s, cap_height))
line_spacing = _get_line_spacing(text, cap_height)
line_widths = [out.get_text_line_width(line, cap_height) for line in lines]
font_measurements = out.get_font_measurements(cap_height)
anchor, line_xs, line_ys = \
_apply_alignment(alignment, line_widths, cap_height, line_spacing, box_width, font_measurements)
rotation = _get_rotation(text)
extra_transform = _get_extra_transform(text)
insert = _get_wcs_insert(text)
whole_text_transform = (
Matrix44.translate(-anchor[0], -anchor[1], 0) @
extra_transform @
rotation @
Matrix44.translate(*insert.xyz)
)
for i, (line, line_x, line_y) in enumerate(zip(lines, line_xs, line_ys)):
transform = Matrix44.translate(line_x, line_y, 0) @ whole_text_transform
yield line, transform, cap_height
if debug_draw_rect:
width = out.get_text_line_width(line, cap_height)
ps = list(transform.transform_vertices([Vector(0, 0, 0), Vector(width, 0, 0), Vector(width, cap_height, 0),
Vector(0, cap_height, 0), Vector(0, 0, 0)]))
for a, b in zip(ps, ps[1:]):
out.draw_line(a, b, '#ff0000')