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Read type0,1 pointlist correctly

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Henk van der Laak 2019-09-08 11:25:42 +02:00
parent ab175641fe
commit 203a520770
1 changed files with 16 additions and 3 deletions
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19
fatamorgana/basic.py
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@ -1302,25 +1302,38 @@ def read_point_list(stream: io.BufferedIOBase) -> List[List[int]]:
""" """
list_type = read_uint(stream) list_type = read_uint(stream)
list_len = read_uint(stream) list_len = read_uint(stream)
#TODO: Implicit close point for 1del
if list_type == 0: if list_type == 0:
points = [] points = []
dx, dy = 0, 0
for i in range(list_len): for i in range(list_len):
point = [0, 0] point = [0, 0]
n = read_uint(stream) n = read_sint(stream)
if n == 0: if n == 0:
raise InvalidDataError('Zero-sized 1-delta') raise InvalidDataError('Zero-sized 1-delta')
point[i % 2] = n point[i % 2] = n
points.append(point) points.append(point)
if i % 2:
dy += n
else:
dx += n
points.append([-dx, 0])
points.append([0, -dy])
elif list_type == 1: elif list_type == 1:
points = [] points = []
dx, dy = 0, 0
for i in range(list_len): for i in range(list_len):
point = [0, 0] point = [0, 0]
n = read_uint(stream) n = read_sint(stream)
if n == 0: if n == 0:
raise Exception('Zero-sized 1-delta') raise Exception('Zero-sized 1-delta')
point[(i + 1) % 2] = n point[(i + 1) % 2] = n
points.append(point) points.append(point)
if i % 2:
dx += n
else:
dy += n
points.append([0, -dy])
points.append([-dx, 0])
elif list_type == 2: elif list_type == 2:
points = [ManhattanDelta.read(stream).as_list() for _ in range(list_len)] points = [ManhattanDelta.read(stream).as_list() for _ in range(list_len)]
elif list_type == 3: elif list_type == 3: