1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
#!BPY
"""
Name: 'Stanford PLY (*.ply)...'
Blender: 241
Group: 'Export'
Tooltip: 'Export active object to Stanford PLY format'
"""
import bpy
import Blender
from Blender import Mesh, Scene, Window, sys, Image, Draw
import BPyMesh
__author__ = "Bruce Merry"
__version__ = "0.92"
__bpydoc__ = """\
This script exports Stanford PLY files from Blender. It supports normals,
colours, and texture coordinates per face or per vertex.
Only one mesh can be exported at a time.
"""
# Copyright (C) 2004, 2005: Bruce Merry, bmerry@cs.uct.ac.za
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
# Vector rounding se we can use as keys
#
#
# Updated on Jan 1, 2007 by Gabe Ghearing
# - fixed normals so they are correctly smooth/flat
# - fixed crash when the model doesn't have uv coords or vertex colors
# - fixed crash when the model has vertex colors but doesn't have uv coords
# - changed float32 to float and uint8 to uchar for compatibility
# Errata/Notes as of Jan 1, 2007
# - script exports texture coords if they exist even if TexFace isn't selected (not a big deal to me)
# - ST(R) should probably be renamed UV(T) like in most PLY files (importer needs to be updated to take either)
#
# Updated on Jan 3, 2007 by Gabe Ghearing
# - fixed "sticky" vertex UV exporting
# - added pupmenu to enable/disable exporting normals, uv coords, and colors
# Errata/Notes as of Jan 3, 2007
# - ST(R) coords should probably be renamed UV(T) like in most PLY files (importer needs to be updated to take either)
# - edges should be exported since PLY files support them
# - code is getting spaghettish, it should be refactored...
#
def rvec3d(v): return round(v[0], 6), round(v[1], 6), round(v[2], 6)
def rvec2d(v): return round(v[0], 6), round(v[1], 6)
def file_callback(filename):
if not filename.lower().endswith('.ply'):
filename += '.ply'
scn= bpy.data.scenes.active
ob= scn.objects.active
if not ob:
Blender.Draw.PupMenu('Error%t|Select 1 active object')
return
file = open(filename, 'wb')
EXPORT_APPLY_MODIFIERS = Draw.Create(1)
EXPORT_NORMALS = Draw.Create(1)
EXPORT_UV = Draw.Create(1)
EXPORT_COLORS = Draw.Create(1)
#EXPORT_EDGES = Draw.Create(0)
pup_block = [\
('Apply Modifiers', EXPORT_APPLY_MODIFIERS, 'Use transformed mesh data.'),\
('Normals', EXPORT_NORMALS, 'Export vertex normal data.'),\
('UVs', EXPORT_UV, 'Export texface UV coords.'),\
('Colors', EXPORT_COLORS, 'Export vertex Colors.'),\
#('Edges', EXPORT_EDGES, 'Edges not connected to faces.'),\
]
if not Draw.PupBlock('Export...', pup_block):
return
is_editmode = Blender.Window.EditMode()
if is_editmode:
Blender.Window.EditMode(0, '', 0)
Window.WaitCursor(1)
EXPORT_APPLY_MODIFIERS = EXPORT_APPLY_MODIFIERS.val
EXPORT_NORMALS = EXPORT_NORMALS.val
EXPORT_UV = EXPORT_UV.val
EXPORT_COLORS = EXPORT_COLORS.val
#EXPORT_EDGES = EXPORT_EDGES.val
mesh = BPyMesh.getMeshFromObject(ob, None, EXPORT_APPLY_MODIFIERS, False, scn)
if not mesh:
Blender.Draw.PupMenu('Error%t|Could not get mesh data from active object')
return
mesh.transform(ob.matrixWorld)
faceUV = mesh.faceUV
vertexUV = mesh.vertexUV
vertexColors = mesh.vertexColors
if (not faceUV) and (not vertexUV): EXPORT_UV = False
if not vertexColors: EXPORT_COLORS = False
if not EXPORT_UV: faceUV = vertexUV = False
if not EXPORT_COLORS: vertexColors = False
# incase
color = uvcoord = uvcoord_key = normal = normal_key = None
verts = [] # list of dictionaries
# vdict = {} # (index, normal, uv) -> new index
vdict = [{} for i in xrange(len(mesh.verts))]
vert_count = 0
for i, f in enumerate(mesh.faces):
smooth = f.smooth
if not smooth:
normal = tuple(f.no)
normal_key = rvec3d(normal)
if faceUV: uv = f.uv
if vertexColors: col = f.col
for j, v in enumerate(f):
if smooth:
normal= tuple(v.no)
normal_key = rvec3d(normal)
if faceUV:
uvcoord= tuple(uv[j])
uvcoord_key = rvec2d(uvcoord)
elif vertexUV:
uvcoord= tuple(v.uvco)
uvcoord_key = rvec2d(uvcoord)
if vertexColors: color= col[j].r, col[j].g, col[j].b
key = normal_key, uvcoord_key, color
vdict_local = vdict[v.index]
if (not vdict_local) or (not vdict_local.has_key(key)):
vdict_local[key] = vert_count;
verts.append( (tuple(v.co), normal, uvcoord, color) )
vert_count += 1
file.write('ply\n')
file.write('format ascii 1.0\n')
file.write('Created by Blender3D %s - www.blender.org, source file: %s\n' % (Blender.Get('version'), Blender.Get('filename').split('/')[-1].split('\\')[-1] ))
file.write('element vertex %d\n' % len(verts))
file.write('property float x\n')
file.write('property float y\n')
file.write('property float z\n')
if EXPORT_NORMALS:
file.write('property float nx\n')
file.write('property float ny\n')
file.write('property float nz\n')
if EXPORT_UV:
file.write('property float s\n')
file.write('property float t\n')
if EXPORT_COLORS:
file.write('property uchar red\n')
file.write('property uchar green\n')
file.write('property uchar blue\n')
file.write('element face %d\n' % len(mesh.faces))
file.write('property list uchar uint vertex_indices\n')
file.write('end_header\n')
for i, v in enumerate(verts):
file.write('%.6f %.6f %.6f ' % v[0]) # co
if EXPORT_NORMALS:
file.write('%.6f %.6f %.6f ' % v[1]) # no
if EXPORT_UV:
file.write('%.6f %.6f ' % v[2]) # uv
if EXPORT_COLORS:
file.write('%u %u %u' % v[3]) # col
file.write('\n')
for (i, f) in enumerate(mesh.faces):
file.write('%d ' % len(f))
smooth = f.smooth
if not smooth: no = rvec3d(f.no)
if faceUV: uv = f.uv
if vertexColors: col = f.col
for j, v in enumerate(f):
if f.smooth: normal= rvec3d(v.no)
else: normal= no
if faceUV: uvcoord= rvec2d(uv[j])
elif vertexUV: uvcoord= rvec2d(v.uvco)
if vertexColors: color= col[j].r, col[j].g, col[j].b
co = v.co
file.write('%d ' % vdict[v.index][normal, uvcoord, color])
file.write('\n')
file.close()
if is_editmode:
Blender.Window.EditMode(1, '', 0)
def main():
Blender.Window.FileSelector(file_callback, 'PLY Export', Blender.sys.makename(ext='.ply'))
if __name__=='__main__':
main()
|
