"""Create mopps using mopper.exe"""
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import os.path
import tempfile
import subprocess
def getMopperPath():
"""Get path to the mopper.
>>> path = getMopperPath()
>>> path.endswith("mopper.exe")
True
:raise ``OSError``: If mopper.exe is not found.
:return: Path to mopper.exe.
:rtype: ``str``
"""
mopper = os.path.join(os.path.dirname(__file__), "mopper.exe")
if not os.path.exists(mopper):
raise OSError("mopper.exe not found at %s" % mopper)
return mopper
def getMopperCredits():
"""Get info about mopper, and credit havok.
>>> print(getMopperCredits())
Mopper. Copyright (c) 2008, NIF File Format Library and Tools.
All rights reserved.
<BLANKLINE>
Options:
--help for usage help
--license for licensing details
<BLANKLINE>
Mopper uses havok. Copyright 1999-2008 Havok.com Inc. (and its Licensors).
All Rights Reserved. See www.havok.com for details.
<BLANKLINE>
<BLANKLINE>
:raise ``OSError``: If mopper.exe is not found or cannot run.
:return: Credits string.
:rtype: ``str``
"""
mopper = getMopperPath()
outfile = tempfile.TemporaryFile("w+") # not binary
try:
# get license info, credit havok (raises OSError on failure)
subprocess.call([mopper], stdout=outfile)
outfile.seek(0)
creditstr = outfile.read().replace("\r\n", "\n")
finally:
outfile.close()
return creditstr
def getMopperOriginScaleCodeWelding(vertices, triangles, material_indices=None):
"""Generate mopp code and welding info for given geometry. Raises
RuntimeError if something goes wrong (e.g. if mopp generator fails, or if
mopper.exe cannot be run on the current platform).
Call L{getMopperCredits} before calling this function if you need to credit
havok in a console application that uses this function.
For example, creating a mopp for the standard cube:
>>> expected_moppcode = [
... 40, 0, 255, 39, 0, 255, 38, 0, 255, 19, 129, 125, 41, 22, 130,
... 125, 12, 24, 130, 125, 4, 38, 0, 5, 51, 39, 0, 5, 50, 24, 130,
... 125, 4, 40, 0, 5, 59, 16, 255, 249, 12, 20, 130, 125, 4, 39,
... 0, 5, 53, 40, 0, 5, 49, 54, 22, 130, 125, 25, 24, 130, 125, 17,
... 17, 255, 249, 12, 21, 129, 125, 4, 38, 0, 5, 57, 40, 249, 255,
... 58, 56, 40, 249, 255, 52, 24, 130, 125, 4, 39, 249, 255, 55, 38,
... 249, 255, 48]
>>> orig, scale, moppcode, welding_info = getMopperOriginScaleCodeWelding(
... [(1, 1, 1), (0, 0, 0), (0, 0, 1), (0, 1, 0),
... (1, 0, 1), (0, 1, 1), (1, 1, 0), (1, 0, 0)],
... [(0, 4, 6), (1, 6, 7), (2, 1, 4), (3, 1, 2),
... (0, 2, 4), (4, 1, 7), (6, 4, 7), (3, 0, 6),
... (0, 3, 5), (3, 2, 5), (2, 0, 5), (1, 3, 6)])
>>> scale
16319749.0
>>> ["%6.3f" % value for value in orig]
['-0.010', '-0.010', '-0.010']
>>> moppcode == expected_moppcode
True
>>> welding_info
[23030, 23247, 23030, 16086, 23247, 23247, 23247, 23247, 23247, 23247, 23247, 16086]
:raise ``RuntimeError``: If the mopper has bad output.
:raise ``OSError``: If the mopper is not found or cannot run.
:param vertices: List of vertices.
:type vertices: list of tuples of floats
:param triangles: List of triangles (indices referring back to vertex list).
:type triangles: list of tuples of ints
:param material_indices: List of material indices (optional).
:type material_indices: list of ints
:return: The origin as a tuple of floats, the mopp scale as a float,
the mopp code as a list of ints, and the welding info as a list of
ints.
:rtype: ``tuple`` of ``float``\ s, ``float``, ``list`` of ``int``\ s, and ``list``
of ``int``\ s
"""
if material_indices is None:
material_indices = []
mopper = getMopperPath()
infile = tempfile.TemporaryFile("w+") # not binary
outfile = tempfile.TemporaryFile("w+") # not binary
try:
# set up input
infile.write("%i\n" % len(vertices))
for vert in vertices:
infile.write("%f %f %f\n" % vert)
infile.write("\n%i\n" % len(triangles))
for tri in triangles:
infile.write("%i %i %i\n" % tri)
infile.write("\n%i\n" % len(material_indices))
for matindex in material_indices:
infile.write("%i\n" % matindex)
infile.seek(0)
# call mopper (raises OSError on failure)
subprocess.call([mopper, "--"], stdin=infile, stdout=outfile)
# process output
outfile.seek(0)
try:
origin = tuple(float(outfile.readline()) for i in xrange(3))
scale = float(outfile.readline())
moppcodelen = int(outfile.readline())
moppcode = [int(outfile.readline()) for i in xrange(moppcodelen)]
welding_info_len = int(outfile.readline())
welding_info = [int(outfile.readline())
for i in xrange(welding_info_len)]
except ValueError:
# conversion failed
raise RuntimeError("invalid mopper output (mopper failed?)")
finally:
infile.close()
outfile.close()
return origin, scale, moppcode, welding_info
if __name__ == "__main__":
import doctest
doctest.testmod()
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