328 lines
11 KiB
Python
328 lines
11 KiB
Python
# ##### BEGIN GPL LICENSE BLOCK #####
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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# ##### END GPL LICENSE BLOCK #####
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# <pep8 compliant>
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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):
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return round(v[0], 6), round(v[1], 6), round(v[2], 6)
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def rvec2d(v):
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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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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, 'w')
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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_mesh(True, 'PREVIEW')
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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_textures) > 0)
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vertexUV = (len(mesh.sticky) > 0)
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vertexColors = len(mesh.vertex_colors) > 0
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if (not faceUV) and (not vertexUV):
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EXPORT_UV = False
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if not vertexColors:
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EXPORT_COLORS = False
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if not EXPORT_UV:
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faceUV = vertexUV = False
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if not EXPORT_COLORS:
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vertexColors = False
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if faceUV:
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active_uv_layer = mesh.active_uv_texture
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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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else:
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active_uv_layer = active_uv_layer.data
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if vertexColors:
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active_col_layer = mesh.active_vertex_color
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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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else:
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active_col_layer = active_col_layer.data
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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 range(len(mesh_verts))]
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ply_faces = [[] for f in range(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 = f.verts
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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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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]))
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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:
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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 pf in ply_faces:
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if len(pf) == 3:
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file.write('3 %d %d %d\n' % tuple(pf))
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else:
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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.meshes.remove(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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from bpy.props import *
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class ExportPLY(bpy.types.Operator):
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'''Export a single object as a stanford PLY with normals, colours and texture coordinates.'''
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bl_idname = "export.ply"
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bl_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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path = StringProperty(name="File Path", description="File path used for exporting the PLY file", maxlen=1024, default="")
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check_existing = BoolProperty(name="Check Existing", description="Check and warn on overwriting existing files", default=True, options={'HIDDEN'})
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use_modifiers = BoolProperty(name="Apply Modifiers", description="Apply Modifiers to the exported mesh", default=True)
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use_normals = BoolProperty(name="Normals", description="Export Normals for smooth and hard shaded faces", default=True)
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use_uvs = BoolProperty(name="UVs", description="Exort the active UV layer", default=True)
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use_colors = BoolProperty(name="Vertex Colors", description="Exort the active vertex color layer", default=True)
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def poll(self, context):
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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.properties.path:
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raise Exception("filename not set")
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write(self.properties.path, context.scene, context.active_object,\
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EXPORT_APPLY_MODIFIERS=self.properties.use_modifiers,
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EXPORT_NORMALS=self.properties.use_normals,
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EXPORT_UV=self.properties.use_uvs,
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EXPORT_COLORS=self.properties.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)
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return {'RUNNING_MODAL'}
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def draw(self, context):
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layout = self.layout
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props = self.properties
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row = layout.row()
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row.prop(props, "use_modifiers")
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row.prop(props, "use_normals")
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row = layout.row()
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row.prop(props, "use_uvs")
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row.prop(props, "use_colors")
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def menu_func(self, context):
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default_path = bpy.data.filename.replace(".blend", ".ply")
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self.layout.operator(ExportPLY.bl_idname, text="Stanford (.ply)").path = default_path
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def register():
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bpy.types.register(ExportPLY)
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bpy.types.INFO_MT_file_export.append(menu_func)
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def unregister():
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bpy.types.unregister(ExportPLY)
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bpy.types.INFO_MT_file_export.remove(menu_func)
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