WIP fast import script

import.py

import bpy
import bmesh

objectFile = "D:\\WoWExport\\world\\wmo\\draenor\\human\\6hu_garrison_inn_v1.obj"

verts = []
normals = []
uv = []
faces = []
material_libs = set()

with open(objectFile, 'rb') as f:
    for line in f:
        line_split = line.split()
        if not line_split:
            continue
        line_start = line_split[0]
        if line_start == b'v':
            verts.append([float(v) for v in line_split[1:]])
        elif line_start == b'vn':
            normals.append([float(v) for v in line_split[1:]])
        elif line_start == b'vt':
            uv.append([float(v) for v in line_split[1:]])
        elif line_start == b'f':
            line_split = line_split[1:]
            faces.append((
                line_split[0].split(b'/')[0],
                line_split[1].split(b'/')[0],
                line_split[2].split(b'/')[0]
            ))

if bpy.ops.object.select_all.poll():
    bpy.ops.object.select_all(action='DESELECT')

mesh = bpy.data.meshes.new("mesh")
obj = bpy.data.objects.new("TestObject", mesh)

scene = bpy.context.scene
scene.objects.link(obj)
scene.objects.active = obj
obj.select = True

mesh = bpy.context.object.data
bm = bmesh.new()

i = 0
for v in verts:
    vert = bm.verts.new(v)
    vert.normal = normals[i]
    i = i + 1

bm.verts.ensure_lookup_table()
bm.verts.index_update()

for face in faces:
    bm.faces.new((
        bm.verts[int(face[0]) - 1],
        bm.verts[int(face[1]) - 1],
        bm.verts[int(face[2]) - 1]
    ));

uv_layer = bm.loops.layers.uv.new()
for face in bm.faces:
    face.smooth = True
    for loop in face.loops:
        loop[uv_layer].uv = uv[loop.vert.index]

bm.to_mesh(mesh)
bm.free()