223 lines
6.6 KiB
Python
223 lines
6.6 KiB
Python
#!BPY
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"""
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Name: 'Stanford PLY (*.ply)...'
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Blender: 241
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Group: 'Export'
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Tooltip: 'Export active object to Stanford PLY format'
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"""
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import Blender
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from Blender import Mesh, Scene, Window, sys, Image, Draw
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import BPyMesh
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__author__ = "Bruce Merry"
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__version__ = "0.92"
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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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#
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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 file_callback(filename):
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if not filename.lower().endswith('.ply'):
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filename += '.ply'
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scn= Blender.Scene.GetCurrent()
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ob= scn.objects.active
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if not ob:
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Blender.Draw.PupMenu('Error%t|Select 1 active object')
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return
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file = open(filename, 'wb')
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EXPORT_APPLY_MODIFIERS = Draw.Create(1)
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EXPORT_NORMALS = Draw.Create(1)
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EXPORT_UV = Draw.Create(1)
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EXPORT_COLORS = Draw.Create(1)
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#EXPORT_EDGES = Draw.Create(0)
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pup_block = [\
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('Apply Modifiers', EXPORT_APPLY_MODIFIERS, 'Use transformed mesh data.'),\
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('Normals', EXPORT_NORMALS, 'Export vertex normal data.'),\
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('UVs', EXPORT_UV, 'Export texface UV coords.'),\
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('Colors', EXPORT_COLORS, 'Export vertex Colors.'),\
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#('Edges', EXPORT_EDGES, 'Edges not connected to faces.'),\
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]
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if not Draw.PupBlock('Export...', pup_block):
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return
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Window.WaitCursor(1)
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EXPORT_APPLY_MODIFIERS = EXPORT_APPLY_MODIFIERS.val
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EXPORT_NORMALS = EXPORT_NORMALS.val
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EXPORT_UV = EXPORT_UV.val
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EXPORT_COLORS = EXPORT_COLORS.val
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#EXPORT_EDGES = EXPORT_EDGES.val
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mesh = BPyMesh.getMeshFromObject(ob, None, EXPORT_APPLY_MODIFIERS, False, scn)
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if not mesh:
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Blender.Draw.PupMenu('Error%t|Could not get mesh data from active object')
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return
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mesh.transform(ob.matrixWorld)
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faceUV = mesh.faceUV
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vertexUV = mesh.vertexUV
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vertexColors = mesh.vertexColors
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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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# incase
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color = uvcoord = uvcoord_key = normal = normal_key = None
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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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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.no)
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normal_key = rvec3d(normal)
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if faceUV: uv = f.uv
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if vertexColors: col = f.col
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for j, v in enumerate(f):
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if smooth:
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normal= v.no
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normal_key = rvec3d(normal)
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if faceUV:
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uvcoord= tuple(uv[j])
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uvcoord_key = rvec2d(uvcoord)
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elif vertexUV:
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uvcoord= tuple(v.uvco)
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uvcoord_key = rvec2d(uvcoord)
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if vertexColors: color= col[j].r, col[j].g, col[j].b
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key = normal_key, uvcoord_key, color
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vdict_local = vdict[v.index]
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if (not vdict_local) or (not vdict_local.has_key(key)):
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vdict_local[key] = vert_count;
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verts.append( (tuple(v.co), normal, uvcoord, color) )
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vert_count += 1
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file.write('ply\n')
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file.write('format ascii 1.0\n')
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file.write('Created by Blender3D %s - www.blender.org, source file: %s\n' % (Blender.Get('version'), Blender.Get('filename').split('/')[-1].split('\\')[-1] ))
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file.write('element vertex %d\n' % len(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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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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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(verts):
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file.write('%.6f %.6f %.6f ' % v[0]) # co
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if EXPORT_NORMALS:
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file.write('%.6f %.6f %.6f ' % v[1]) # no
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if EXPORT_UV:
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file.write('%.6f %.6f ' % v[2]) # uv
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if EXPORT_COLORS:
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file.write('%u %u %u' % v[3]) # col
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file.write('\n')
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for (i, f) in enumerate(mesh.faces):
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file.write('%d ' % len(f))
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smooth = f.smooth
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if not smooth: no = rvec3d(f.no)
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if faceUV: uv = f.uv
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if vertexColors: col = f.col
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for j, v in enumerate(f):
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if f.smooth: normal= rvec3d(v.no)
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else: normal= no
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if faceUV: uvcoord= rvec2d(uv[j])
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elif vertexUV: uvcoord= rvec2d(v.uvco)
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if vertexColors: color= col[j].r, col[j].g, col[j].b
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co = v.co
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file.write('%d ' % vdict[v.index][normal, uvcoord, color])
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file.write('\n')
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file.close()
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def main():
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Blender.Window.FileSelector(file_callback, 'PLY Export', Blender.sys.makename(ext='.ply'))
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if __name__=='__main__':
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main()
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