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- bug fix #1874

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https://projects.blender.org/tracker/?func=detail&aid=1874&group_id=9&atid=125

  normal vectors of vertexes are exported correctly now
This commit is contained in:
Jiri Hnidek 2004-12-12 13:42:49 +00:00
parent d12960dd2d
commit 20f4632340
1 changed files with 19 additions and 6 deletions
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25
release/scripts/obj_export.py
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@ -7,7 +7,7 @@ Group: 'Export'
Tooltip: 'Save a Wavefront OBJ File'
"""
__author__ = "Campbell Barton"
__author__ = "Campbell Barton, Jiri Hnidek"
__url__ = ["blender", "elysiun"]
__version__ = "0.9"
@ -62,10 +62,18 @@ def stripPath(path):
#==================#
# Apply Transform #
#==================#
def apply_transform(vert, matrix):
def apply_transform(vert, matrix_4x4):
vertCopy = Mathutils.CopyVec(vert)
vertCopy.resize4D()
return Mathutils.VecMultMat(vertCopy, matrix)
return Mathutils.VecMultMat(vertCopy, matrix_4x4)
#=================================#
# Apply Transform (normal vector) #
#=================================#
def apply_normal_transform(norm, matrix_3x3):
vertCopy = Mathutils.CopyVec(norm)
vertCopy.resize3D()
return Mathutils.VecMultMat(vertCopy, matrix_3x3)
from Blender import *
@ -148,12 +156,17 @@ def save_obj(filename):
file.write('o %s_%s\n' % (ob.getName(), m.name)) # Write Object name
# Works 100% Yay
matrix = ob.getMatrix('worldspace')
matrix_4x4 = ob.getMatrix('worldspace')
# matrix for transformation of normal vectors
matrix_3x3 = Mathutils.Matrix([matrix_4x4[0][0], matrix_4x4[0][1], matrix_4x4[0][2]],
[matrix_4x4[1][0], matrix_4x4[1][1], matrix_4x4[1][2]],
[matrix_4x4[2][0], matrix_4x4[2][1], matrix_4x4[2][2]])
# Vert
for v in m.verts:
# Transform the vert
vTx = apply_transform(v.co, matrix)
vTx = apply_transform(v.co, matrix_4x4)
file.write('v %s %s %s\n' % (vTx[0], vTx[1], vTx[2]))
# UV
@ -168,7 +181,7 @@ def save_obj(filename):
for f1 in m.faces:
for v in f1.v:
# Transform the normal
noTx = apply_transform(v.no, matrix)
noTx = apply_normal_transform(v.no, matrix_3x3)
noTx.normalize()
file.write('vn %s %s %s\n' % (noTx[0], noTx[1], noTx[2]))