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fix [#27971] Blender OBJ export with Z-Up setting produces an error and fails

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changes to extensions coming up...
This commit is contained in:
Campbell Barton 2011-07-18 05:07:54 +00:00
parent 9469f0d0af
commit 13e82ff8e1
1 changed files with 40 additions and 1 deletions
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41
release/scripts/modules/bpy_extras/io_utils.py
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@ -22,6 +22,7 @@ __all__ = (
"ExportHelper",
"ImportHelper",
"axis_conversion",
"axis_conversion_ensure",
"create_derived_objects",
"free_derived_objects",
"unpack_list",
@ -154,12 +155,50 @@ def axis_conversion(from_forward='Y', from_up='Z', to_forward='Y', to_up='Z'):
if from_forward == to_forward and from_up == to_up:
return Matrix().to_3x3()
if from_forward[-1] == from_up[-1] or to_forward[-1] == to_up[-1]:
raise Exception("invalid axis arguments passed, "
"can't use up/forward on the same axis.")
value = reduce(int.__or__, (_axis_convert_num[a] << (i * 3) for i, a in enumerate((from_forward, from_up, to_forward, to_up))))
for i, axis_lut in enumerate(_axis_convert_lut):
if value in axis_lut:
return Matrix(_axis_convert_matrix[i])
assert("internal error")
assert(0)
def axis_conversion_ensure(operator, forward_attr, up_attr):
"""
Function to ensure an operator has valid axis conversion settings, intended
to be used from :class:`Operator.check`.
:arg operator: the operator to access axis attributes from.
:type operator: :class:`Operator`
:arg forward_attr:
:type forward_attr: string
:arg up_attr: the directory the *filepath* will be referenced from (normally the export path).
:type up_attr: string
:return: True if the value was modified.
:rtype: boolean
"""
def validate(axis_forward, axis_up):
if axis_forward[-1] == axis_up[-1]:
axis_up = axis_up[0:-1] + 'XYZ'[('XYZ'.index(axis_up[-1]) + 1) % 3]
return axis_forward, axis_up
change = False
axis = getattr(operator, forward_attr), getattr(operator, up_attr)
axis_new = validate(*axis)
if axis != axis_new:
setattr(operator, forward_attr, axis_new[0])
setattr(operator, up_attr, axis_new[1])
return True
else:
return False
# return a tuple (free, object list), free is True if memory should be freed later with free_derived_objects()