def parse(self, stream: KaitaiStream, context: AST):
offset = stream.pos()
c = stream.read_bytes(len(self.contents))
if c != self.contents:
print(context.root.to_dict())
raise RuntimeError(
f"File offset {offset}: Expected {self.contents!r} but instead got {c!r}"
)
return RawBytes(c, offset)
def contents(self):
if hasattr(self, '_m_contents'):
return self._m_contents if hasattr(self,
'_m_contents') else None
io = self._root._io
_pos = io.pos()
io.seek(self.offset)
_on = self.name
if _on == u"SECTORS":
self._raw__m_contents = io.read_bytes(self.size)
io = KaitaiStream(BytesIO(self._raw__m_contents))
self._m_contents = self._root.Sectors(io, self, self._root)
elif _on == u"TEXTURE1":
self._raw__m_contents = io.read_bytes(self.size)
io = KaitaiStream(BytesIO(self._raw__m_contents))
self._m_contents = self._root.Texture12(io, self, self._root)
elif _on == u"VERTEXES":
self._raw__m_contents = io.read_bytes(self.size)
io = KaitaiStream(BytesIO(self._raw__m_contents))
self._m_contents = self._root.Vertexes(io, self, self._root)
elif _on == u"BLOCKMAP":
self._raw__m_contents = io.read_bytes(self.size)
io = KaitaiStream(BytesIO(self._raw__m_contents))
self._m_contents = self._root.Blockmap(io, self, self._root)
elif _on == u"PNAMES":
self._raw__m_contents = io.read_bytes(self.size)
io = KaitaiStream(BytesIO(self._raw__m_contents))
self._m_contents = self._root.Pnames(io, self, self._root)
elif _on == u"TEXTURE2":
self._raw__m_contents = io.read_bytes(self.size)
io = KaitaiStream(BytesIO(self._raw__m_contents))
self._m_contents = self._root.Texture12(io, self, self._root)
elif _on == u"THINGS":
self._raw__m_contents = io.read_bytes(self.size)
io = KaitaiStream(BytesIO(self._raw__m_contents))
self._m_contents = self._root.Things(io, self, self._root)
elif _on == u"LINEDEFS":
self._raw__m_contents = io.read_bytes(self.size)
io = KaitaiStream(BytesIO(self._raw__m_contents))
self._m_contents = self._root.Linedefs(io, self, self._root)
elif _on == u"SIDEDEFS":
self._raw__m_contents = io.read_bytes(self.size)
io = KaitaiStream(BytesIO(self._raw__m_contents))
self._m_contents = self._root.Sidedefs(io, self, self._root)
else:
self._m_contents = io.read_bytes(self.size)
io.seek(_pos)
return self._m_contents if hasattr(self, '_m_contents') else None
def parse(self, stream: KaitaiStream, context: AST) -> RawBytes:
offset = stream.pos()
ret = bytearray()
if self.size is None:
size = None
else:
size = int(self.size.interpret(context))
while self.size is None or not self._size_met(ret, size):
try:
b = stream.read_bytes(1)
except EOFError:
if self.size_eos:
break
else:
raise RuntimeError("Unexpected end of stream")
ret.extend(b)
if self.terminator is not None and b == self.terminator:
break
return RawBytes(bytes(ret), offset)
def value(self):
if hasattr(self, '_m_value'):
return self._m_value if hasattr(self, '_m_value') else None
io = self._root._io
_pos = io.pos()
io.seek(self.offset)
_on = self.tag
if _on == u"head":
self._raw__m_value = io.read_bytes(self.length)
io = KaitaiStream(BytesIO(self._raw__m_value))
self._m_value = self._root.Head(io, self, self._root)
elif _on == u"cvt ":
self._raw__m_value = io.read_bytes(self.length)
io = KaitaiStream(BytesIO(self._raw__m_value))
self._m_value = self._root.Cvt(io, self, self._root)
elif _on == u"prep":
self._raw__m_value = io.read_bytes(self.length)
io = KaitaiStream(BytesIO(self._raw__m_value))
self._m_value = self._root.Prep(io, self, self._root)
elif _on == u"kern":
self._raw__m_value = io.read_bytes(self.length)
io = KaitaiStream(BytesIO(self._raw__m_value))
self._m_value = self._root.Kern(io, self, self._root)
elif _on == u"hhea":
self._raw__m_value = io.read_bytes(self.length)
io = KaitaiStream(BytesIO(self._raw__m_value))
self._m_value = self._root.Hhea(io, self, self._root)
elif _on == u"post":
self._raw__m_value = io.read_bytes(self.length)
io = KaitaiStream(BytesIO(self._raw__m_value))
self._m_value = self._root.Post(io, self, self._root)
elif _on == u"OS/2":
self._raw__m_value = io.read_bytes(self.length)
io = KaitaiStream(BytesIO(self._raw__m_value))
self._m_value = self._root.Os2(io, self, self._root)
elif _on == u"name":
self._raw__m_value = io.read_bytes(self.length)
io = KaitaiStream(BytesIO(self._raw__m_value))
self._m_value = self._root.Name(io, self, self._root)
elif _on == u"maxp":
self._raw__m_value = io.read_bytes(self.length)
io = KaitaiStream(BytesIO(self._raw__m_value))
self._m_value = self._root.Maxp(io, self, self._root)
elif _on == u"glyf":
self._raw__m_value = io.read_bytes(self.length)
io = KaitaiStream(BytesIO(self._raw__m_value))
self._m_value = self._root.Glyf(io, self, self._root)
elif _on == u"fpgm":
self._raw__m_value = io.read_bytes(self.length)
io = KaitaiStream(BytesIO(self._raw__m_value))
self._m_value = self._root.Fpgm(io, self, self._root)
elif _on == u"cmap":
self._raw__m_value = io.read_bytes(self.length)
io = KaitaiStream(BytesIO(self._raw__m_value))
self._m_value = self._root.Cmap(io, self, self._root)
else:
self._m_value = io.read_bytes(self.length)
io.seek(_pos)
return self._m_value if hasattr(self, '_m_value') else None
def from_file(cls, filename: str, distance_multiplier=0.001):
if is_binary(filename):
with open(filename, 'rb') as file:
stream = KaitaiStream(file)
name = stream.read_bytes(80).decode('utf8')
# print(name)
num_triangles = stream.read_u4le()
# print(num_triangles)
triangles = [None] * (num_triangles)
invalid_triangles = []
for i in range(num_triangles):
if i % 5000 == 0:
print('reading stl', round(i / num_triangles * 100, 2),
'%')
normal = vm.Vector3D(stream.read_f4le(),
stream.read_f4le(),
stream.read_f4le())
# print(n)
p1 = vm.Point3D(distance_multiplier * stream.read_f4le(),
distance_multiplier * stream.read_f4le(),
distance_multiplier * stream.read_f4le())
p2 = vm.Point3D(distance_multiplier * stream.read_f4le(),
distance_multiplier * stream.read_f4le(),
distance_multiplier * stream.read_f4le())
p3 = vm.Point3D(distance_multiplier * stream.read_f4le(),
distance_multiplier * stream.read_f4le(),
distance_multiplier * stream.read_f4le())
# print(p1, p2, p3)
try:
triangles[i] = vmf.Triangle3D(p1, p2, p3)
except ZeroDivisionError:
invalid_triangles.append(i)
stream.read_u2le()
# print(abr)
if invalid_triangles:
print('invalid_triangles number: ', len(invalid_triangles))
for i in invalid_triangles[::-1]:
del triangles[i]
else:
with open(filename, 'r') as file:
header = file.readline()
name = header[6:]
triangles = []
points = []
for line in file.readlines():
if 'vertex' in line:
line = line.replace('vertex', '')
line = line.lstrip(' ')
x, y, z = line.split(' ')
points.append(
vm.Point3D(distance_multiplier * float(x),
distance_multiplier * float(y),
distance_multiplier * float(z)))
if 'endfacet' in line:
try:
triangles.append(vmf.Triangle3D(*points))
except ZeroDivisionError:
pass
points = []
return cls(triangles, name=name)