def fill_radial_tr_gradient(self, obj, pdfpath, fill_trafo, gradient):
if not fill_trafo:
fill_trafo = [1.0, 0.0, 0.0, 1.0, 0.0, 0.0]
stops = gradient[2]
sp, ep = gradient[1]
dx, dy = sp
l = libgeom.distance(sp, ep)
trafo = [1.0, 0.0, 0.0, 1.0, dx, dy]
inv_trafo = libgeom.multiply_trafo(libgeom.invert_trafo(fill_trafo),
libgeom.invert_trafo(trafo))
cv_trafo = libgeom.multiply_trafo(trafo, fill_trafo)
paths = libgeom.apply_trafo_to_paths(obj.paths, obj.trafo)
paths = libgeom.apply_trafo_to_paths(paths, inv_trafo)
bbox = libgeom.sum_bbox(libgeom.get_paths_bbox(paths),
[0.0, 0.0, l, 0.0])
bbox = libgeom.normalize_bbox(bbox)
d = libgeom.distance(*libgeom.apply_trafo_to_points([[0.0, 0.0],
[0.0, 1.0]],
inv_trafo))
circle_paths = libgeom.get_circle_paths(0.0, 0.0, sk2const.ARC_CHORD)
trafo = [2.0, 0.0, 0.0, 2.0, -1.0, -1.0]
circle_paths = libgeom.apply_trafo_to_paths(circle_paths, trafo)
inner_paths = []
r = 0.0
self.canvas.saveState()
self.canvas.clipPath(pdfpath, 0, 0)
self.canvas.transform(*cv_trafo)
while r < l:
point = r / l
self.canvas.setFillColor(self.get_grcolor_at_point(stops, point))
if r + d < l:
coef = (r + d)
else:
coef = l
trafo = [coef, 0.0, 0.0, coef, 0.0, 0.0]
paths = libgeom.apply_trafo_to_paths(circle_paths, trafo)
ring = self.make_pdfpath(inner_paths + paths)[0]
inner_paths = paths
self.canvas.drawPath(ring, stroke=0, fill=1)
r += d
self.canvas.setFillColor(self.get_grcolor_at_point(stops, 1.0))
r = max(bbox[2] - bbox[0], bbox[3] - bbox[1])
trafo = [2.0 * r, 0.0, 0.0, 2.0 * r, 0.0, 0.0]
paths = libgeom.apply_trafo_to_paths(circle_paths, trafo)
ring = self.make_pdfpath(inner_paths + paths)[0]
self.canvas.drawPath(ring, stroke=0, fill=1)
self.canvas.restoreState()
def fill_radial_tr_gradient(self, obj, pdfpath, fill_trafo, gradient): if not fill_trafo: fill_trafo = [1.0, 0.0, 0.0, 1.0, 0.0, 0.0] stops = gradient[2] sp, ep = gradient[1] dx, dy = sp l = libgeom.distance(sp, ep) trafo = [1.0, 0.0, 0.0, 1.0, dx, dy] inv_trafo = libgeom.multiply_trafo(libgeom.invert_trafo(fill_trafo), libgeom.invert_trafo(trafo)) cv_trafo = libgeom.multiply_trafo(trafo, fill_trafo) paths = libgeom.apply_trafo_to_paths(obj.paths, obj.trafo) paths = libgeom.apply_trafo_to_paths(paths, inv_trafo) bbox = libgeom.sum_bbox(libgeom.get_paths_bbox(paths), [0.0, 0.0, l, 0.0]) bbox = libgeom.normalize_bbox(bbox) d = libgeom.distance(*libgeom.apply_trafo_to_points([[0.0, 0.0], [0.0, 1.0]], inv_trafo)) circle_paths = libgeom.get_circle_paths(0.0, 0.0, sk2_const.ARC_CHORD) trafo = [2.0, 0.0, 0.0, 2.0, -1.0, -1.0] circle_paths = libgeom.apply_trafo_to_paths(circle_paths, trafo) inner_paths = [] r = 0.0 self.canvas.saveState() self.canvas.clipPath(pdfpath, 0, 0) self.canvas.transform(*cv_trafo) while r < l: point = r / l self.canvas.setFillColor(self.get_grcolor_at_point(stops, point)) if r + d < l: coef = (r + d) else: coef = l trafo = [coef, 0.0, 0.0, coef, 0.0, 0.0] paths = libgeom.apply_trafo_to_paths(circle_paths, trafo) ring = self.make_pdfpath(inner_paths + paths)[0] inner_paths = paths self.canvas.drawPath(ring, stroke=0, fill=1) r += d self.canvas.setFillColor(self.get_grcolor_at_point(stops, 1.0)) r = max(bbox[2] - bbox[0], bbox[3] - bbox[1]) trafo = [2.0 * r, 0.0, 0.0, 2.0 * r, 0.0, 0.0] paths = libgeom.apply_trafo_to_paths(circle_paths, trafo) ring = self.make_pdfpath(inner_paths + paths)[0] self.canvas.drawPath(ring, stroke=0, fill=1) self.canvas.restoreState()
def get_initial_paths(self): return libgeom.get_circle_paths(self.angle1, self.angle2, self.circle_type)
def parse_svg_path_cmds(pathcmds):
index = 0
last = None
last_index = 0
cmds = []
pathcmds = re.sub(' *', ' ', pathcmds)
for item in pathcmds:
if item in 'MmZzLlHhVvCcSsQqTtAa':
if last:
coords = parse_svg_coords(pathcmds[last_index + 1:index])
cmds.append((last, coords))
last = item
last_index = index
index += 1
coords = parse_svg_coords(pathcmds[last_index + 1:index])
cmds.append([last, coords])
paths = []
path = []
cpoint = []
rel_flag = False
last_cmd = 'M'
last_quad = None
for cmd in cmds:
if cmd[0] in 'Mm':
if path: paths.append(path)
path = deepcopy(PATH_STUB)
rel_flag = cmd[0] == 'm'
points = [cmd[1][i:i + 2] for i in range(0, len(cmd[1]), 2)]
for point in points:
if cpoint and rel_flag:
point = add_points(base_point(cpoint), point)
if not path[0]:
path[0] = point
else:
path[1].append(point)
cpoint = point
elif cmd[0] in 'Zz':
p0 = [] + base_point(cpoint)
p1 = [] + path[0]
if not libgeom.is_equal_points(p0, p1, 8):
path[1].append([] + path[0])
path[2] = sk2const.CURVE_CLOSED
cpoint = [] + path[0]
elif cmd[0] in 'Cc':
rel_flag = cmd[0] == 'c'
points = [cmd[1][i:i + 2] for i in range(0, len(cmd[1]), 2)]
points = [points[i:i + 3] for i in range(0, len(points), 3)]
for point in points:
if rel_flag:
point = [
add_points(base_point(cpoint), point[0]),
add_points(base_point(cpoint), point[1]),
add_points(base_point(cpoint), point[2])
]
qpoint = [] + point
qpoint.append(sk2const.NODE_CUSP)
path[1].append(qpoint)
cpoint = point
elif cmd[0] in 'Ll':
rel_flag = cmd[0] == 'l'
points = [cmd[1][i:i + 2] for i in range(0, len(cmd[1]), 2)]
for point in points:
if rel_flag:
point = add_points(base_point(cpoint), point)
path[1].append(point)
cpoint = point
elif cmd[0] in 'Hh':
rel_flag = cmd[0] == 'h'
for x in cmd[1]:
dx, y = base_point(cpoint)
if rel_flag:
point = [x + dx, y]
else:
point = [x, y]
path[1].append(point)
cpoint = point
elif cmd[0] in 'Vv':
rel_flag = cmd[0] == 'v'
for y in cmd[1]:
x, dy = base_point(cpoint)
if rel_flag:
point = [x, y + dy]
else:
point = [x, y]
path[1].append(point)
cpoint = point
elif cmd[0] in 'Ss':
rel_flag = cmd[0] == 's'
points = [cmd[1][i:i + 2] for i in range(0, len(cmd[1]), 2)]
points = [points[i:i + 2] for i in range(0, len(points), 2)]
for point in points:
q = cpoint
p = cpoint
if len(cpoint) > 2:
q = cpoint[1]
p = cpoint[2]
p1 = sub_points(add_points(p, p), q)
if rel_flag:
p2 = add_points(base_point(cpoint), point[0])
p3 = add_points(base_point(cpoint), point[1])
else:
p2, p3 = point
point = [p1, p2, p3]
qpoint = [] + point
qpoint.append(sk2const.NODE_CUSP)
path[1].append(qpoint)
cpoint = point
elif cmd[0] in 'Qq':
rel_flag = cmd[0] == 'q'
groups = [cmd[1][i:i + 4] for i in range(0, len(cmd[1]), 4)]
for vals in groups:
p = base_point(cpoint)
if rel_flag:
q = add_points(p, [vals[0], vals[1]])
p3 = add_points(p, [vals[2], vals[3]])
else:
q = [vals[0], vals[1]]
p3 = [vals[2], vals[3]]
p1 = add_points(mult_point(p, F13), mult_point(q, F23))
p2 = add_points(mult_point(p3, F13), mult_point(q, F23))
point = [p1, p2, p3]
qpoint = [] + point
qpoint.append(sk2const.NODE_CUSP)
path[1].append(qpoint)
cpoint = point
last_quad = q
elif cmd[0] in 'Tt':
rel_flag = cmd[0] == 't'
groups = [cmd[1][i:i + 2] for i in range(0, len(cmd[1]), 2)]
if last_cmd not in 'QqTt' or last_quad is None:
last_quad = base_point(cpoint)
for vals in groups:
p = base_point(cpoint)
q = sub_points(mult_point(p, 2.0), last_quad)
if rel_flag:
p3 = add_points(p, [vals[0], vals[1]])
else:
p3 = [vals[0], vals[1]]
p1 = add_points(mult_point(p, F13), mult_point(q, F23))
p2 = add_points(mult_point(p3, F13), mult_point(q, F23))
point = [p1, p2, p3]
qpoint = [] + point
qpoint.append(sk2const.NODE_CUSP)
path[1].append(qpoint)
cpoint = point
last_quad = q
elif cmd[0] in 'Aa':
rel_flag = cmd[0] == 'a'
arcs = [cmd[1][i:i + 7] for i in range(0, len(cmd[1]), 7)]
for arc in arcs:
cpoint = base_point(cpoint)
rev_flag = False
rx, ry, xrot, large_arc_flag, sweep_flag, x, y = arc
rx = abs(rx)
ry = abs(ry)
if rel_flag:
x += cpoint[0]
y += cpoint[1]
if cpoint == [x, y]: continue
if not rx or not ry:
path[1].append([x, y])
continue
vector = [[] + cpoint, [x, y]]
if sweep_flag:
vector = [[x, y], [] + cpoint]
rev_flag = True
cpoint = [x, y]
dir_tr = libgeom.trafo_rotate_grad(-xrot)
if rx > ry:
tr = [1.0, 0.0, 0.0, rx / ry, 0.0, 0.0]
r = rx
else:
tr = [ry / rx, 0.0, 0.0, 1.0, 0.0, 0.0]
r = ry
dir_tr = libgeom.multiply_trafo(dir_tr, tr)
vector = libgeom.apply_trafo_to_points(vector, dir_tr)
l = libgeom.distance(*vector)
if l > 2.0 * r: r = l / 2.0
mp = libgeom.midpoint(*vector)
tr0 = libgeom.trafo_rotate(math.pi / 2.0, mp[0], mp[1])
pvector = libgeom.apply_trafo_to_points(vector, tr0)
k = math.sqrt(r * r - l * l / 4.0)
if large_arc_flag:
center = libgeom.midpoint(mp, pvector[1], 2.0 * k / l)
else:
center = libgeom.midpoint(mp, pvector[0], 2.0 * k / l)
angle1 = libgeom.get_point_angle(vector[0], center)
angle2 = libgeom.get_point_angle(vector[1], center)
da = angle2 - angle1
start = angle1
end = angle2
if large_arc_flag:
if -math.pi >= da or da <= math.pi:
start = angle2
end = angle1
rev_flag = not rev_flag
else:
if -math.pi <= da or da >= math.pi:
start = angle2
end = angle1
rev_flag = not rev_flag
pth = libgeom.get_circle_paths(start, end, sk2const.ARC_ARC)[0]
if rev_flag:
pth = libgeom.reverse_path(pth)
points = pth[1]
for point in points:
if len(point) == 3:
point.append(sk2const.NODE_CUSP)
tr0 = [1.0, 0.0, 0.0, 1.0, -0.5, -0.5]
points = libgeom.apply_trafo_to_points(points, tr0)
tr1 = [2.0 * r, 0.0, 0.0, 2.0 * r, 0.0, 0.0]
points = libgeom.apply_trafo_to_points(points, tr1)
tr2 = [1.0, 0.0, 0.0, 1.0, center[0], center[1]]
points = libgeom.apply_trafo_to_points(points, tr2)
tr3 = libgeom.invert_trafo(dir_tr)
points = libgeom.apply_trafo_to_points(points, tr3)
for point in points:
path[1].append(point)
last_cmd = cmd[0]
if path: paths.append(path)
return paths
