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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>
import bpy
__author__ = "Bruce Merry"
__version__ = "0.93"
__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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
# Vector rounding se we can use as keys
#
# Updated on Aug 11, 2008 by Campbell Barton
# - added 'comment' prefix to comments - Needed to comply with the PLY spec.
#
# 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 write(filename, scene, ob, \
EXPORT_APPLY_MODIFIERS=True,\
EXPORT_NORMALS=True,\
EXPORT_UV=True,\
EXPORT_COLORS=True):
if not filename.lower().endswith('.ply'):
filename += '.ply'
if not ob:
raise Exception("Error, Select 1 active object")
return
file = open(filename, 'w')
#EXPORT_EDGES = Draw.Create(0)
"""
is_editmode = Blender.Window.EditMode()
if is_editmode:
Blender.Window.EditMode(0, '', 0)
Window.WaitCursor(1)
"""
#mesh = BPyMesh.getMeshFromObject(ob, None, EXPORT_APPLY_MODIFIERS, False, scn) # XXX
if EXPORT_APPLY_MODIFIERS:
mesh = ob.create_mesh(True, 'PREVIEW')
else:
mesh = ob.data
if not mesh:
raise ("Error, could not get mesh data from active object")
return
# mesh.transform(ob.matrixWorld) # XXX
faceUV = (len(mesh.uv_textures) > 0)
vertexUV = (len(mesh.sticky) > 0)
vertexColors = len(mesh.vertex_colors) > 0
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
if faceUV:
active_uv_layer = mesh.active_uv_texture
if not active_uv_layer:
EXPORT_UV = False
faceUV = None
else:
active_uv_layer = active_uv_layer.data
if vertexColors:
active_col_layer = mesh.active_vertex_color
if not active_col_layer:
EXPORT_COLORS = False
vertexColors = None
else:
active_col_layer = active_col_layer.data
# incase
color = uvcoord = uvcoord_key = normal = normal_key = None
mesh_verts = mesh.verts # 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.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.verts
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 == 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 Blender3D %s - www.blender.org, source file: %s\n' % (bpy.app.version_string, bpy.data.filename.split('/')[-1].split('\\')[-1]))
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 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(ply_verts):
file.write('%.6f %.6f %.6f ' % tuple(mesh_verts[v[0]].co)) # 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 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", filename, "done")
if EXPORT_APPLY_MODIFIERS:
bpy.data.meshes.remove(mesh)
# XXX
"""
if is_editmode:
Blender.Window.EditMode(1, '', 0)
"""
from bpy.props import *
class ExportPLY(bpy.types.Operator):
'''Export a single object as a stanford PLY with normals, colours and texture coordinates.'''
bl_idname = "export.ply"
bl_label = "Export PLY"
# List of operator properties, the attributes will be assigned
# to the class instance from the operator settings before calling.
path = StringProperty(name="File Path", description="File path used for exporting the PLY file", maxlen=1024, default="")
check_existing = BoolProperty(name="Check Existing", description="Check and warn on overwriting existing files", default=True, options={'HIDDEN'})
use_modifiers = BoolProperty(name="Apply Modifiers", description="Apply Modifiers to the exported mesh", default=True)
use_normals = BoolProperty(name="Normals", description="Export Normals for smooth and hard shaded faces", default=True)
use_uvs = BoolProperty(name="UVs", description="Exort the active UV layer", default=True)
use_colors = BoolProperty(name="Vertex Colors", description="Exort the active vertex color layer", default=True)
def poll(self, context):
return context.active_object != None
def execute(self, context):
# print("Selected: " + context.active_object.name)
if not self.properties.path:
raise Exception("filename not set")
write(self.properties.path, context.scene, context.active_object,\
EXPORT_APPLY_MODIFIERS=self.properties.use_modifiers,
EXPORT_NORMALS=self.properties.use_normals,
EXPORT_UV=self.properties.use_uvs,
EXPORT_COLORS=self.properties.use_colors,
)
return {'FINISHED'}
def invoke(self, context, event):
wm = context.manager
wm.add_fileselect(self)
return {'RUNNING_MODAL'}
def draw(self, context):
layout = self.layout
props = self.properties
row = layout.row()
row.prop(props, "use_modifiers")
row.prop(props, "use_normals")
row = layout.row()
row.prop(props, "use_uvs")
row.prop(props, "use_colors")
def menu_func(self, context):
default_path = bpy.data.filename.replace(".blend", ".ply")
self.layout.operator(ExportPLY.bl_idname, text="Stanford (.ply)").path = default_path
def register():
bpy.types.register(ExportPLY)
bpy.types.INFO_MT_file_export.append(menu_func)
def unregister():
bpy.types.unregister(ExportPLY)
bpy.types.INFO_MT_file_export.remove(menu_func)
if __name__ == "__main__":
register()
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