forked from bartvdbraak/blender
320 lines
8.5 KiB
Python
320 lines
8.5 KiB
Python
#!BPY
|
|
|
|
"""
|
|
Name: 'Stanford PLY (*.ply)...'
|
|
Blender: 241
|
|
Group: 'Import'
|
|
Tip: 'Import a Stanford PLY file'
|
|
"""
|
|
|
|
__author__ = 'Bruce Merry'
|
|
__version__ = '0.92'
|
|
__bpydoc__ = """\
|
|
This script imports Stanford PLY files into Blender. It supports per-vertex
|
|
normals, and per-face colours and texture coordinates.
|
|
|
|
Usage:
|
|
|
|
Run this script from "File->Import" and select the desired PLY file.
|
|
"""
|
|
|
|
# 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.
|
|
|
|
|
|
# Updated by Campbell Barton AKA Ideasman, 10% faster code.
|
|
|
|
# Portions of this code are taken from mod_meshtools.py in Blender
|
|
# 2.32.
|
|
|
|
import Blender
|
|
try:
|
|
import re, struct, StringIO
|
|
except:
|
|
struct= None
|
|
|
|
class element_spec:
|
|
name = ''
|
|
count = 0
|
|
def __init__(self, name, count):
|
|
self.name = name
|
|
self.count = count
|
|
self.properties = []
|
|
|
|
def load(self, format, stream):
|
|
if format == 'ascii':
|
|
stream = re.split('\s+', stream.readline())
|
|
return map(lambda x: x.load(format, stream), self.properties)
|
|
|
|
def index(self, name):
|
|
for i, p in enumerate(self.properties):
|
|
if p.name == name: return i
|
|
return -1
|
|
|
|
class property_spec:
|
|
name = ''
|
|
list_type = ''
|
|
numeric_type = ''
|
|
def __init__(self, name, list_type, numeric_type):
|
|
self.name = name
|
|
self.list_type = list_type
|
|
self.numeric_type = numeric_type
|
|
|
|
def read_format(self, format, count, num_type, stream):
|
|
if format == 'ascii':
|
|
if (num_type == 's'):
|
|
ans = []
|
|
for i in xrange(count):
|
|
s = stream[i]
|
|
if len(s) < 2 or s[0] != '"' or s[-1] != '"':
|
|
print 'Invalid string', s
|
|
print 'Note: ply_import.py does not handle whitespace in strings'
|
|
return None
|
|
ans.append(s[1:-1])
|
|
stream[:count] = []
|
|
return ans
|
|
if (num_type == 'f' or num_type == 'd'):
|
|
mapper = float
|
|
else:
|
|
mapper = int
|
|
ans = map(lambda x: mapper(x), stream[:count])
|
|
stream[:count] = []
|
|
return ans
|
|
else:
|
|
if (num_type == 's'):
|
|
ans = []
|
|
for i in xrange(count):
|
|
fmt = format + 'i'
|
|
data = stream.read(struct.calcsize(fmt))
|
|
length = struct.unpack(fmt, data)[0]
|
|
fmt = '%s%is' % (format, length)
|
|
data = stream.read(struct.calcsize(fmt))
|
|
s = struct.unpack(fmt, data)[0]
|
|
ans.append(s[:-1]) # strip the NULL
|
|
return ans
|
|
else:
|
|
fmt = '%s%i%s' % (format, count, num_type)
|
|
data = stream.read(struct.calcsize(fmt));
|
|
return struct.unpack(fmt, data)
|
|
|
|
def load(self, format, stream):
|
|
if (self.list_type != None):
|
|
count = int(self.read_format(format, 1, self.list_type, stream)[0])
|
|
return self.read_format(format, count, self.numeric_type, stream)
|
|
else:
|
|
return self.read_format(format, 1, self.numeric_type, stream)[0]
|
|
|
|
class object_spec:
|
|
'A list of element_specs'
|
|
specs = []
|
|
|
|
def load(self, format, stream):
|
|
return dict([(i.name,[i.load(format, stream) for j in xrange(i.count) ]) for i in self.specs])
|
|
|
|
'''
|
|
answer = {}
|
|
for i in self.specs:
|
|
answer[i.name] = []
|
|
for j in xrange(i.count):
|
|
if not j % 100 and meshtools.show_progress:
|
|
Blender.Window.DrawProgressBar(float(j) / i.count, 'Loading ' + i.name)
|
|
answer[i.name].append(i.load(format, stream))
|
|
return answer
|
|
'''
|
|
|
|
|
|
def read(filename):
|
|
format = ''
|
|
version = '1.0'
|
|
format_specs = {'binary_little_endian': '<',
|
|
'binary_big_endian': '>',
|
|
'ascii': 'ascii'}
|
|
type_specs = {'char': 'b',
|
|
'uchar': 'B',
|
|
'int8': 'b',
|
|
'uint8': 'B',
|
|
'int16': 'h',
|
|
'uint16': 'H',
|
|
'int': 'i',
|
|
'int32': 'i',
|
|
'uint': 'I',
|
|
'uint32': 'I',
|
|
'float': 'f',
|
|
'float32': 'f',
|
|
'float64': 'd',
|
|
'string': 's'}
|
|
obj_spec = object_spec()
|
|
|
|
try:
|
|
file = open(filename, 'rb')
|
|
signature = file.readline()
|
|
if (signature != 'ply\n'):
|
|
print 'Signature line was invalid'
|
|
return None
|
|
while 1:
|
|
tokens = re.split(r'[ \n]+', file.readline())
|
|
if (len(tokens) == 0):
|
|
continue
|
|
if (tokens[0] == 'end_header'):
|
|
break
|
|
elif (tokens[0] == 'comment' or tokens[0] == 'obj_info'):
|
|
continue
|
|
elif (tokens[0] == 'format'):
|
|
if (len(tokens) < 3):
|
|
print 'Invalid format line'
|
|
return None
|
|
if (tokens[1] not in format_specs.keys()):
|
|
print 'Unknown format', tokens[1]
|
|
return None
|
|
if (tokens[2] != version):
|
|
print 'Unknown version', tokens[2]
|
|
return None
|
|
format = tokens[1]
|
|
elif (tokens[0] == 'element'):
|
|
if (len(tokens) < 3):
|
|
print 'Invalid element line'
|
|
return None
|
|
obj_spec.specs.append(element_spec(tokens[1], int(tokens[2])))
|
|
elif (tokens[0] == 'property'):
|
|
if (not len(obj_spec.specs)):
|
|
print 'Property without element'
|
|
return None
|
|
if (tokens[1] == 'list'):
|
|
obj_spec.specs[-1].properties.append(property_spec(tokens[4], type_specs[tokens[2]], type_specs[tokens[3]]))
|
|
else:
|
|
obj_spec.specs[-1].properties.append(property_spec(tokens[2], None, type_specs[tokens[1]]))
|
|
obj = obj_spec.load(format_specs[format], file)
|
|
|
|
except IOError, (errno, strerror):
|
|
file.close()
|
|
return None
|
|
|
|
file.close()
|
|
return (obj_spec, obj);
|
|
|
|
|
|
def add_face(vertices, varr, indices, uvindices, colindices):
|
|
face = Blender.NMesh.Face([varr[i] for i in indices])
|
|
for index in indices:
|
|
vertex = vertices[index];
|
|
|
|
if uvindices:
|
|
face.uv.append((vertex[uvindices[0]], 1.0 - vertex[uvindices[1]]))
|
|
face.mode &= ~Blender.NMesh.FaceModes.TEX
|
|
if colindices:
|
|
if not uvindices: face.uv.append((0, 0)) # Force faceUV
|
|
face.col.append(Blender.NMesh.Col(vertex[colindices[0]], vertex[colindices[1]], vertex[colindices[2]], 255))
|
|
face.mode &= ~Blender.NMesh.FaceModes.TEX
|
|
return face
|
|
|
|
def filesel_callback(filename):
|
|
t = Blender.sys.time()
|
|
(obj_spec, obj) = read(filename)
|
|
if obj == None:
|
|
print 'Invalid file'
|
|
return
|
|
vmap = {}
|
|
varr = []
|
|
uvindices = None
|
|
noindices = None
|
|
colindices = None
|
|
for el in obj_spec.specs:
|
|
if el.name == 'vertex':
|
|
vindices = vindices_x, vindices_y, vindices_z = (el.index('x'), el.index('y'), el.index('z'))
|
|
if el.index('nx') >= 0 and el.index('ny') >= 0 and el.index('nz') >= 0:
|
|
noindices = (el.index('nx'), el.index('ny'), el.index('nz'))
|
|
if el.index('s') >= 0 and el.index('t') >= 0:
|
|
uvindices = (el.index('s'), el.index('t'))
|
|
if el.index('red') >= 0 and el.index('green') and el.index('blue') >= 0:
|
|
colindices = (el.index('red'), el.index('green'), el.index('blue'))
|
|
elif el.name == 'face':
|
|
findex = el.index('vertex_indices')
|
|
|
|
|
|
mesh = Blender.NMesh.GetRaw()
|
|
NMVert = Blender.NMesh.Vert
|
|
for v in obj['vertex']:
|
|
|
|
if noindices > 0:
|
|
x,y,z,nx,ny,nz = vkey =\
|
|
(v[vindices_x], v[vindices_y], v[vindices_z],\
|
|
v[noindices[0]], v[noindices[1]], v[noindices[2]])
|
|
else:
|
|
x,y,z = vkey = (v[vindices_x], v[vindices_y], v[vindices_z])
|
|
#if not vmap.has_key(vkey):
|
|
try: # try uses 1 less dict lookup
|
|
varr.append(vmap[vkey])
|
|
except:
|
|
nmv = NMVert(vkey[0], vkey[1], vkey[2])
|
|
mesh.verts.append(nmv)
|
|
if noindices > 0:
|
|
nmv.no[0] = vkey[3]
|
|
nmv.no[1] = vkey[4]
|
|
nmv.no[2] = vkey[5]
|
|
vmap[vkey] = nmv
|
|
varr.append(vmap[vkey])
|
|
|
|
verts = obj['vertex']
|
|
|
|
if 'face' in obj:
|
|
for f in obj['face']:
|
|
ind = f[findex]
|
|
nind = len(ind)
|
|
if nind <= 4:
|
|
mesh.faces.append(add_face(verts, varr, ind, uvindices, colindices))
|
|
else:
|
|
for j in xrange(nind - 2):
|
|
mesh.faces.append(add_face(verts, varr, (ind[0], ind[j + 1], ind[j + 2]), uvindices, colindices))
|
|
|
|
|
|
del obj # Reclaim memory
|
|
|
|
'''
|
|
if noindices:
|
|
normals = 1
|
|
else:
|
|
normals = 0
|
|
'''
|
|
|
|
objname = Blender.sys.splitext(Blender.sys.basename(filename))[0]
|
|
scn= Blender.Scene.GetCurrent()
|
|
scn.objects.selected = []
|
|
|
|
mesh.name= objname
|
|
scn.objects.new(mesh)
|
|
|
|
Blender.Redraw()
|
|
Blender.Window.DrawProgressBar(1.0, '')
|
|
print '\nSuccessfully imported ' + Blender.sys.basename(filename) + ' ' + str(Blender.sys.time()-t)
|
|
|
|
|
|
|
|
|
|
def main():
|
|
if not struct:
|
|
Blender.Draw.PupMenu('This importer requires a full python install')
|
|
return
|
|
|
|
Blender.Window.FileSelector(filesel_callback, 'Import PLY', '*.ply')
|
|
|
|
if __name__=='__main__':
|
|
main()
|
|
|
|
|
|
|
|
|
|
|