178 lines
5.3 KiB
Python
178 lines
5.3 KiB
Python
#!BPY
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"""
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Name: 'DEC Object File Format (.off)...'
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Blender: 242
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Group: 'Import'
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Tooltip: 'Import DEC Object File Format (*.off)'
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"""
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__author__ = "Anthony D'Agostino (Scorpius), Campbell Barton (Ideasman)"
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__url__ = ("blender", "blenderartists.org",
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"Author's homepage, http://www.redrival.com/scorpius")
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__version__ = "Part of IOSuite 0.5"
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__bpydoc__ = """\
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This script imports DEC Object File Format files to Blender.
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The DEC (Digital Equipment Corporation) OFF format is very old and
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almost identical to Wavefront's OBJ. I wrote this so I could get my huge
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meshes into Moonlight Atelier. (DXF can also be used but the file size
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is five times larger than OFF!) Blender/Moonlight users might find this
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script to be very useful.
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Usage:<br>
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Execute this script from the "File->Import" menu and choose an OFF file to
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open.
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Notes:<br>
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UV Coordinate support has been added. - Scorpius
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FGON support has been added. - Cam
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New Mesh module now used. - Cam
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"""
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# $Id:
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#
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# +---------------------------------------------------------+
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# | Copyright (c) 2002 Anthony D'Agostino |
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# | http://www.redrival.com/scorpius |
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# | scorpius@netzero.com |
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# | February 3, 2001 |
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# | Read and write Object File Format (*.off) |
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# +---------------------------------------------------------+
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# ***** 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#
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# ***** END GPL LICENCE BLOCK *****
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import Blender
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# =============================
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# ====== Read OFF Format ======
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# =============================
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def read(filename):
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start = Blender.sys.time()
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file = open(filename, "rb")
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verts = [] # verts and uvs are aligned
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uvs = []
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faces = []
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# === OFF Header ===
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# Skip the comments
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offheader= file.readline()
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while offheader.startswith('#') or offheader.lower().startswith('off'):
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offheader = file.readline()
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numverts, numfaces, numedges= map(int, offheader.split())
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if offheader.find('ST') >= 0:
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has_uv = True
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Vector= Mathutils.Vector
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else:
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has_uv = False
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# === Vertex List ===
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for i in xrange(numverts):
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if has_uv:
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x, y, z, u, v = map(float, file.readline().split())
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uvs.append(Vector(u, v))
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else:
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x, y, z = map(float, file.readline().split())
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verts.append((x, y, z))
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# === Face List ===
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def fan_face(face):
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# 'Elp, Only fan fill- if were keen we could use our trusty BPyMesh.ngon function
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# So far I havnt seen any big ngons in on off file - Cam
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return [ (face[0], face[i-1], face[i]) for i in xrange(2,len(face))]
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for i in xrange(numfaces):
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line = file.readline().split() # ignore the first value, its just the face count but we can work that out anyway
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# appends all the indicies in reverse order except 0
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# xrange(len(line)-1, -1, -1) # normal reverse loop
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# xrange(len(line)-1, 0, -1) # ignoring index 0 because its only a count
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# face= [int(line[j]) for j in xrange(len(line)-1, 0, -1)]
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# Some OFF files have floats on the end of the face. what are these for?
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face= [int(line[j]) for j in xrange(int(line[0]), 0, -1)]
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if len(face)>4:
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faces.extend( fan_face(face) )
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else:
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faces.append(face)
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scn= Blender.Scene.GetCurrent()
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name= filename.split('/')[-1].split('\\')[-1].split('.')[0]
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me= Blender.Mesh.New(name)
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me.verts.extend(verts)
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me.faces.extend(faces)
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# Now edges if we have them, render fgon
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if numedges:
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FGON_FLAG= Blender.Mesh.EdgeFlags.FGON
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edge_dict= {}
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# Set all edges to be fgons by default
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for ed in me.edges:
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ed.flag |= FGON_FLAG
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edge_dict[ed.key]= ed
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# Now make known edges visible
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has_edges = True
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for i in xrange(numedges):
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try:
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i1,i2= file.readline().split()
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except:
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has_edges = False
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break # some files dont define edges :/
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i1= int(i1)
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i2= int(i2)
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if i1>i2:
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i1,i2= i2,i1
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# We know this edge is seen so unset the fgon flag
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edge_dict[i1,i2].flag &= ~FGON_FLAG
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if not has_edges:
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# dang, we'v turned all the edges into fgons and then the file didnt define any edges.
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# oh well, just enable them all
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for ed in me.edges:
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ed.flag &= ~FGON_FLAG
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# Assign uvs from vert index
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if has_uv:
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for f in me.faces:
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f_uv= f.uv
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for i, v in enumerate(f): # same as f.v
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f_uv[i]= uvs[v.index]
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for ob in scn.objects:
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ob.sel=0
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scn.objects.active = scn.objects.new(me, name)
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Blender.Window.RedrawAll()
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print 'Off "%s" imported in %.4f seconds.' % (name, Blender.sys.time()-start)
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if __name__=='__main__':
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Blender.Window.FileSelector(read, 'Import OFF', '*.off')
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