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Fixed the binary stl loader.

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This commit is contained in:
Aeva Ntsc 2012-10-16 01:54:27 -05:00 committed by Christopher Allan Webber
parent d93eac36fc
commit de69f43aab
1 changed files with 5 additions and 26 deletions
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31
mediagoblin/media_types/stl/model_loader.py
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@ -90,35 +90,14 @@ class BinaryStlModel(ThreeDee):
http://en.wikipedia.org/wiki/STL_%28file_format%29#Binary_STL
"""
def __num(self, fileob, hint):
assert hint == "uint" or hint == "real" or hint == "short"
form = None
bits = 0
if hint == "uint":
form = "<I" # little-endian unsigned int
bits = 32
elif hint == "real":
form = "<i" # little-endian signed int
bits = 32
elif hint == "short":
form = "<H" # little-endian unsigned short
bits = 16
return struct.unpack(form, fileob.read(bits/8))[0]
def __vector(self, fileob):
return tuple([self.__num(fileob, "real") for n in range(3)])
def load(self, fileob):
fileob.seek(80) # skip the header
triangle_count = self.__num(fileob, "uint")
for i in range(triangle_count):
self.__vector(fileob) # skip the normal vector
count = struct.unpack("<I", fileob.read(4))[0]
for i in range(count):
fileob.read(12) # skip the normal vector
for v in range(3):
# - FIXME - traingle_count IS reporting the correct
# number, but the vertex information appears to be
# total nonsense :(
self.verts.append(self.__vector(fileob))
self.__num(fileob, "short") # skip the attribute byte count
self.verts.append(struct.unpack("<3f", fileob.read(12)))
fileob.read(2) # skip the attribute bytes
def auto_detect(fileob, hint):