updated the ply exporter to use the blender 2.5 python api
Note's * exports the mesh without modifiers or transformations applied * supports UV's vertex colors * no support for normals yet (missing from data api) * registers an operator called EXPORT_OT_ply * no file selector yet. can only fun from python currently bpy.ops.EXPORT_OT_ply(filename="/tmp/test.ply") * removed double lookups on the vertex dict, build face verts to write allong the way.
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Campbell Barton
@@ -1,16 +1,4 @@
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#!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 bpy
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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__ = "0.93"
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@@ -62,85 +50,103 @@ Only one mesh can be exported at a time.
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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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def write(filename, ob, EXPORT_APPLY_MODIFIERS= True, EXPORT_NORMALS= True, EXPORT_UV= True, EXPORT_COLORS= True):
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if not filename.lower().endswith('.ply'):
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filename += '.ply'
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scn= bpy.data.scenes.active
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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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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_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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"""
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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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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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#mesh = BPyMesh.getMeshFromObject(ob, None, EXPORT_APPLY_MODIFIERS, False, scn) # XXX
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mesh = ob.data
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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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raise ("Error, 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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# mesh.transform(ob.matrixWorld) # XXX
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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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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 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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verts = [] # list of dictionaries
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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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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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# XXX need face normals
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"""
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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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"""
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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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"""
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if smooth:
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normal= tuple(v.no)
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normal_key = rvec3d(normal)
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"""
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normal_key = None # XXX
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if faceUV:
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uvcoord= uv[j][0], 1.0-uv[j][1]
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@@ -149,33 +155,41 @@ def file_callback(filename):
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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: color= col[j].r, col[j].g, col[j].b
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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[v.index]
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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 (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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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' % (Blender.Get('version'), Blender.Get('filename').split('/')[-1].split('\\')[-1] ))
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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(verts))
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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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@@ -188,41 +202,74 @@ def file_callback(filename):
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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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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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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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"""
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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 (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][0], 1.0-uv[j][1]))
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elif vertexUV: uvcoord= rvec2d((v.uvco[0], 1.0-v.uvco[1]))
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if vertexColors: color= col[j].r, col[j].g, col[j].b
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file.write('%d ' % vdict[v.index][normal, uvcoord, color])
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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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# 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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"""
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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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"""
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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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__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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]
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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.active_object)
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return ('FINISHED',)
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def invoke(self, context, event):
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print("Invoke", context, event)
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# XXX file selector
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self.execute(context)
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return ('FINISHED',)
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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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