forked from bartvdbraak/blender
284 lines
8.5 KiB
Python
284 lines
8.5 KiB
Python
import bpy
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__author__ = "Bruce Merry"
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__version__ = "0.93"
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__bpydoc__ = """\
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This script exports Stanford PLY files from Blender. It supports normals,
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colours, and texture coordinates per face or per vertex.
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Only one mesh can be exported at a time.
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"""
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# Copyright (C) 2004, 2005: Bruce Merry, bmerry@cs.uct.ac.za
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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# Vector rounding se we can use as keys
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#
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# Updated on Aug 11, 2008 by Campbell Barton
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# - added 'comment' prefix to comments - Needed to comply with the PLY spec.
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#
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# Updated on Jan 1, 2007 by Gabe Ghearing
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# - fixed normals so they are correctly smooth/flat
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# - fixed crash when the model doesn't have uv coords or vertex colors
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# - fixed crash when the model has vertex colors but doesn't have uv coords
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# - changed float32 to float and uint8 to uchar for compatibility
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# Errata/Notes as of Jan 1, 2007
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# - script exports texture coords if they exist even if TexFace isn't selected (not a big deal to me)
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# - ST(R) should probably be renamed UV(T) like in most PLY files (importer needs to be updated to take either)
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#
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# Updated on Jan 3, 2007 by Gabe Ghearing
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# - fixed "sticky" vertex UV exporting
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# - added pupmenu to enable/disable exporting normals, uv coords, and colors
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# Errata/Notes as of Jan 3, 2007
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# - ST(R) coords should probably be renamed UV(T) like in most PLY files (importer needs to be updated to take either)
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# - edges should be exported since PLY files support them
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# - code is getting spaghettish, it should be refactored...
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#
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def rvec3d(v): return round(v[0], 6), round(v[1], 6), round(v[2], 6)
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def rvec2d(v): return round(v[0], 6), round(v[1], 6)
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def write(filename, scene, ob, \
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EXPORT_APPLY_MODIFIERS= True,\
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EXPORT_NORMALS= True,\
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EXPORT_UV= True,\
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EXPORT_COLORS= True\
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):
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if not filename.lower().endswith('.ply'):
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filename += '.ply'
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if not ob:
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raise Exception("Error, Select 1 active object")
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return
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file = open(filename, 'wb')
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#EXPORT_EDGES = Draw.Create(0)
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"""
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is_editmode = Blender.Window.EditMode()
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if is_editmode:
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Blender.Window.EditMode(0, '', 0)
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Window.WaitCursor(1)
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"""
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#mesh = BPyMesh.getMeshFromObject(ob, None, EXPORT_APPLY_MODIFIERS, False, scn) # XXX
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if EXPORT_APPLY_MODIFIERS:
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mesh = ob.create_render_mesh(scene)
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else:
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mesh = ob.data
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if not mesh:
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raise ("Error, could not get mesh data from active object")
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return
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# mesh.transform(ob.matrixWorld) # XXX
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faceUV = len(mesh.uv_layers) > 0
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vertexUV = len(mesh.sticky) > 0
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vertexColors = len(mesh.vcol_layers) > 0
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if (not faceUV) and (not vertexUV): EXPORT_UV = False
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if not vertexColors: EXPORT_COLORS = False
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if not EXPORT_UV: faceUV = vertexUV = False
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if not EXPORT_COLORS: vertexColors = False
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if faceUV:
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active_uv_layer = None
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for lay in mesh.uv_layers:
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if lay.active:
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active_uv_layer= lay.data
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break
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if not active_uv_layer:
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EXPORT_UV = False
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faceUV = None
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if vertexColors:
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active_col_layer = None
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for lay in mesh.vcol_layers:
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if lay.active:
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active_col_layer= lay.data
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if not active_col_layer:
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EXPORT_COLORS = False
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vertexColors = None
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# incase
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color = uvcoord = uvcoord_key = normal = normal_key = None
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mesh_verts = mesh.verts # save a lookup
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ply_verts = [] # list of dictionaries
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# vdict = {} # (index, normal, uv) -> new index
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vdict = [{} for i in xrange(len(mesh_verts))]
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ply_faces = [[] for f in xrange(len(mesh.faces))]
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vert_count = 0
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for i, f in enumerate(mesh.faces):
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smooth = f.smooth
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if not smooth:
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normal = tuple(f.normal)
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normal_key = rvec3d(normal)
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if faceUV:
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uv = active_uv_layer[i]
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uv = uv.uv1, uv.uv2, uv.uv3, uv.uv4 # XXX - crufty :/
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if vertexColors:
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col = active_col_layer[i]
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col = col.color1, col.color2, col.color3, col.color4
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f_verts= list(f.verts)
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if not f_verts[3]: f_verts.pop() # XXX face length should be 3/4, not always 4
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pf= ply_faces[i]
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for j, vidx in enumerate(f_verts):
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v = mesh_verts[vidx]
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if smooth:
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normal= tuple(v.normal)
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normal_key = rvec3d(normal)
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if faceUV:
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uvcoord= uv[j][0], 1.0-uv[j][1]
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uvcoord_key = rvec2d(uvcoord)
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elif vertexUV:
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uvcoord= v.uvco[0], 1.0-v.uvco[1]
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uvcoord_key = rvec2d(uvcoord)
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if vertexColors:
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color= col[j]
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color= int(color[0]*255.0), int(color[1]*255.0), int(color[2]*255.0)
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key = normal_key, uvcoord_key, color
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vdict_local = vdict[vidx]
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pf_vidx = vdict_local.get(key) # Will be None initially
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if pf_vidx == None: # same as vdict_local.has_key(key)
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pf_vidx = vdict_local[key] = vert_count;
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ply_verts.append((vidx, normal, uvcoord, color))
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vert_count += 1
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pf.append(pf_vidx)
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file.write('ply\n')
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file.write('format ascii 1.0\n')
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version = "2.5" # Blender.Get('version')
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file.write('comment Created by Blender3D %s - www.blender.org, source file: %s\n' % (version, bpy.data.filename.split('/')[-1].split('\\')[-1] ))
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file.write('element vertex %d\n' % len(ply_verts))
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file.write('property float x\n')
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file.write('property float y\n')
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file.write('property float z\n')
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# XXX
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"""
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if EXPORT_NORMALS:
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file.write('property float nx\n')
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file.write('property float ny\n')
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file.write('property float nz\n')
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"""
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if EXPORT_UV:
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file.write('property float s\n')
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file.write('property float t\n')
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if EXPORT_COLORS:
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file.write('property uchar red\n')
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file.write('property uchar green\n')
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file.write('property uchar blue\n')
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file.write('element face %d\n' % len(mesh.faces))
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file.write('property list uchar uint vertex_indices\n')
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file.write('end_header\n')
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for i, v in enumerate(ply_verts):
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file.write('%.6f %.6f %.6f ' % tuple(mesh_verts[v[0]].co)) # co
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"""
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if EXPORT_NORMALS:
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file.write('%.6f %.6f %.6f ' % v[1]) # no
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"""
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if EXPORT_UV: file.write('%.6f %.6f ' % v[2]) # uv
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if EXPORT_COLORS: file.write('%u %u %u' % v[3]) # col
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file.write('\n')
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for pf in ply_faces:
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if len(pf)==3: file.write('3 %d %d %d\n' % tuple(pf))
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else: file.write('4 %d %d %d %d\n' % tuple(pf))
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file.close()
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print("writing", filename, "done")
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if EXPORT_APPLY_MODIFIERS:
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bpy.data.remove_mesh(mesh)
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# XXX
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"""
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if is_editmode:
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Blender.Window.EditMode(1, '', 0)
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"""
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class EXPORT_OT_ply(bpy.types.Operator):
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'''
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Operator documentatuon text, will be used for the operator tooltip and python docs.
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'''
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__idname__ = "export.ply"
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__label__ = "Export PLY"
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# List of operator properties, the attributes will be assigned
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# to the class instance from the operator settings before calling.
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__props__ = [
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bpy.props.StringProperty(attr="filename", name="File Name", description="File name used for exporting the PLY file", maxlen= 1024, default= ""),
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bpy.props.BoolProperty(attr="use_modifiers", name="Apply Modifiers", description="Apply Modifiers to the exported mesh", default= True),
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bpy.props.BoolProperty(attr="use_normals", name="Export Normals", description="Export Normals for smooth and hard shaded faces", default= True),
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bpy.props.BoolProperty(attr="use_uvs", name="Export UVs", description="Exort the active UV layer", default= True),
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bpy.props.BoolProperty(attr="use_colors", name="Export Vertex Colors", description="Exort the active vertex color layer", default= True)
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]
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def poll(self, context):
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print("Poll")
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return context.active_object != None
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def execute(self, context):
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# print("Selected: " + context.active_object.name)
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if not self.filename:
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raise Exception("filename not set")
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write(self.filename, context.scene, context.active_object,\
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EXPORT_APPLY_MODIFIERS = self.use_modifiers,
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EXPORT_NORMALS = self.use_normals,
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EXPORT_UV = self.use_uvs,
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EXPORT_COLORS = self.use_colors,
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)
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return ('FINISHED',)
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def invoke(self, context, event):
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wm = context.manager
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wm.add_fileselect(self.__operator__)
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return ('RUNNING_MODAL',)
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bpy.ops.add(EXPORT_OT_ply)
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if __name__ == "__main__":
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bpy.ops.EXPORT_OT_ply(filename="/tmp/test.ply")
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