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# ##### BEGIN GPL LICENSE BLOCK #####
#
# 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####
# <pep8 compliant>
# Copyright (C) 2004, 2005: Bruce Merry, bmerry@cs.uct.ac.za
# Contributors: Bruce Merry, Campbell Barton
"""
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.
"""
import bpy
import os
def save(operator, context, filepath="", use_modifiers=True, use_normals=True, use_uv_coords=True, use_colors=True):
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)
scene = context.scene
obj = context.object
if not obj:
raise Exception("Error, Select 1 active object")
file = open(filepath, "w", encoding="utf8", newline="\n")
if scene.objects.active:
bpy.ops.object.mode_set(mode='OBJECT')
if use_modifiers:
mesh = obj.to_mesh(scene, True, 'PREVIEW')
else:
mesh = obj.data
if not mesh:
raise Exception("Error, could not get mesh data from active object")
# mesh.transform(obj.matrix_world) # XXX
faceUV = (len(mesh.uv_textures) > 0)
vertexUV = (len(mesh.sticky) > 0)
vertexColors = len(mesh.vertex_colors) > 0
if (not faceUV) and (not vertexUV):
use_uv_coords = False
if not vertexColors:
use_colors = False
if not use_uv_coords:
faceUV = vertexUV = False
if not use_colors:
vertexColors = False
if faceUV:
active_uv_layer = mesh.uv_textures.active
if not active_uv_layer:
use_uv_coords = False
faceUV = None
else:
active_uv_layer = active_uv_layer.data
if vertexColors:
active_col_layer = mesh.vertex_colors.active
if not active_col_layer:
use_colors = False
vertexColors = None
else:
active_col_layer = active_col_layer.data
# incase
color = uvcoord = uvcoord_key = normal = normal_key = None
mesh_verts = mesh.vertices # save a lookup
ply_verts = [] # list of dictionaries
# vdict = {} # (index, normal, uv) -> new index
vdict = [{} for i in range(len(mesh_verts))]
ply_faces = [[] for f in range(len(mesh.faces))]
vert_count = 0
for i, f in enumerate(mesh.faces):
smooth = f.use_smooth
if not smooth:
normal = tuple(f.normal)
normal_key = rvec3d(normal)
if faceUV:
uv = active_uv_layer[i]
uv = uv.uv1, uv.uv2, uv.uv3, uv.uv4 # XXX - crufty :/
if vertexColors:
col = active_col_layer[i]
col = col.color1[:], col.color2[:], col.color3[:], col.color4[:]
f_verts = f.vertices
pf = ply_faces[i]
for j, vidx in enumerate(f_verts):
v = mesh_verts[vidx]
if smooth:
normal = tuple(v.normal)
normal_key = rvec3d(normal)
if faceUV:
uvcoord = uv[j][0], 1.0 - uv[j][1]
uvcoord_key = rvec2d(uvcoord)
elif vertexUV:
uvcoord = v.uvco[0], 1.0 - v.uvco[1]
uvcoord_key = rvec2d(uvcoord)
if vertexColors:
color = col[j]
color = int(color[0] * 255.0), int(color[1] * 255.0), int(color[2] * 255.0)
key = normal_key, uvcoord_key, color
vdict_local = vdict[vidx]
pf_vidx = vdict_local.get(key) # Will be None initially
if pf_vidx is None: # same as vdict_local.has_key(key)
pf_vidx = vdict_local[key] = vert_count
ply_verts.append((vidx, normal, uvcoord, color))
vert_count += 1
pf.append(pf_vidx)
file.write('ply\n')
file.write('format ascii 1.0\n')
file.write('comment Created by Blender %s - www.blender.org, source file: %r\n' % (bpy.app.version_string, os.path.basename(bpy.data.filepath)))
file.write('element vertex %d\n' % len(ply_verts))
file.write('property float x\n')
file.write('property float y\n')
file.write('property float z\n')
if use_normals:
file.write('property float nx\n')
file.write('property float ny\n')
file.write('property float nz\n')
if use_uv_coords:
file.write('property float s\n')
file.write('property float t\n')
if use_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(ply_verts):
file.write('%.6f %.6f %.6f ' % mesh_verts[v[0]].co[:]) # co
if use_normals:
file.write('%.6f %.6f %.6f ' % v[1]) # no
if use_uv_coords:
file.write('%.6f %.6f ' % v[2]) # uv
if use_colors:
file.write('%u %u %u' % v[3]) # col
file.write('\n')
for pf in ply_faces:
if len(pf) == 3:
file.write('3 %d %d %d\n' % tuple(pf))
else:
file.write('4 %d %d %d %d\n' % tuple(pf))
file.close()
print("writing %r done" % filepath)
if use_modifiers:
bpy.data.meshes.remove(mesh)
# XXX
"""
if is_editmode:
Blender.Window.EditMode(1, '', 0)
"""
return {'FINISHED'}
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