def get_path_length(path, tolerance=0.5):
fpath = flat_path(path, tolerance)
ret = 0
start = fpath[0]
for item in fpath[1]:
ret += distance(start, item)
start = item
return ret
def set_text_on_path(path_obj, text_obj, data):
curve = path_obj.to_curve()
path = apply_trafo_to_paths(curve.paths, curve.trafo)[0]
if data[2]:
path = reverse_path(path)
fpath = flat_path(path)
fpath_len = get_path_length(fpath)
pos_dict = {}
xmin = xmax = 0
index = 0
for item in text_obj.cache_layout_data:
if index < len(text_obj.cache_cpath) and \
text_obj.cache_cpath[index]:
x = item[0]
y = item[4]
xmin = min(xmin, x)
xmax = max(xmax, x + item[2])
pos_dict[index] = (x, y)
index += 1
text_len = abs(xmax - xmin)
text_shift = fpath_len * data[0]
strech = 1.0
if data[1] == TEXT_ALIGN_CENTER:
text_shift -= text_len / 2.0
elif data[1] == TEXT_ALIGN_RIGHT:
text_shift -= text_len
elif data[1] == TEXT_ALIGN_JUSTIFY:
text_shift = 0.0
strech = fpath_len / text_len
sx = 0.0 - xmin + text_shift
trafos = {}
for index in pos_dict.keys():
x, y = pos_dict[index]
shift = text_obj.cache_layout_data[index][2] / 2.0
point, angle = _get_point_on_path(fpath, (x + sx + shift) * strech)
center_x, center_y = x + shift, y
m21 = math.sin(angle)
m11 = m22 = math.cos(angle)
m12 = -m21
dx = center_x - m11 * center_x + m21 * center_y
dy = center_y - m21 * center_x - m11 * center_y
trafos[index] = [
m11, m21, m12, m22, dx + point[0] - x - shift, dy + point[1] - y
]
text_obj.trafos = trafos
def get_path_length(path, tolerance=0.5):
fpath = flat_path(path, tolerance)
points = [fpath[0], ] + fpath[1]
if fpath[2] == sk2const.CURVE_CLOSED:
points += [fpath[0], ]
ret = 0
start = []
for item in points:
if not start:
start = item
continue
ret += distance(start, item)
start = item
return ret
def get_path_length(path, tolerance=0.5): fpath = flat_path(path, tolerance) points = [fpath[0], ] + fpath[1] if fpath[2] == sk2_const.CURVE_CLOSED: points += [fpath[0], ] ret = 0 start = [] for item in points: if not start: start = item continue ret += distance(start, item) start = item return ret
def set_text_on_path(path_obj, text_obj, data):
curve = path_obj.to_curve()
path = apply_trafo_to_paths(curve.paths, curve.trafo)[0]
if data[2]: path = reverse_path(path)
fpath = flat_path(path)
fpath_len = get_path_length(fpath)
pos_dict = {}
xmin = xmax = 0
index = 0
for item in text_obj.cache_layout_data:
if index < len(text_obj.cache_cpath) and \
text_obj.cache_cpath[index]:
x = item[0]
y = item[4]
xmin = min(xmin, x)
xmax = max(xmax, x + item[2])
pos_dict[index] = (x, y)
index += 1
text_len = abs(xmax - xmin)
text_shift = fpath_len * data[0]
strech = 1.0
if data[1] == TEXT_ALIGN_CENTER:
text_shift -= text_len / 2.0
elif data[1] == TEXT_ALIGN_RIGHT:
text_shift -= text_len
elif data[1] == TEXT_ALIGN_JUSTIFY:
text_shift = 0.0
strech = fpath_len / text_len
sx = 0.0 - xmin + text_shift
trafos = {}
for index in pos_dict.keys():
x, y = pos_dict[index]
shift = text_obj.cache_layout_data[index][2] / 2.0
point, angle = _get_point_on_path(fpath, (x + sx + shift) * strech)
center_x, center_y = x + shift, y
m21 = math.sin(angle)
m11 = m22 = math.cos(angle)
m12 = -m21
dx = center_x - m11 * center_x + m21 * center_y;
dy = center_y - m21 * center_x - m11 * center_y;
trafos[index] = [m11, m21, m12, m22,
dx + point[0] - x - shift, dy + point[1] - y]
text_obj.trafos = trafos