|
1
|
|
|
|
|
2
|
|
|
from ed2d.mesh import MeshBase |
|
3
|
|
|
from ed2d.assets.mtlloader import MTL |
|
4
|
|
|
|
|
5
|
|
|
class OBJ(object): |
|
6
|
|
|
def __init__(self, fileName): |
|
7
|
|
|
''' Wavefront .obj file parser.''' |
|
8
|
|
|
fcount = 0 |
|
9
|
|
|
vcount = 0 |
|
10
|
|
|
vtcount = 0 |
|
11
|
|
|
vncount = 0 |
|
12
|
|
|
|
|
13
|
|
|
# Load the file |
|
14
|
|
|
objfile = open(fileName, "r") |
|
15
|
|
|
|
|
16
|
|
|
# Do a head count |
|
17
|
|
|
for line in objfile: |
|
18
|
|
|
value = line[:2] |
|
19
|
|
|
if value == 'f ': |
|
20
|
|
|
fcount += 1 |
|
21
|
|
|
elif value == 'v ': |
|
22
|
|
|
vcount += 1 |
|
23
|
|
|
elif value == 'vt': |
|
24
|
|
|
vtcount += 1 |
|
25
|
|
|
elif value == 'vn': |
|
26
|
|
|
vncount += 1 |
|
27
|
|
|
|
|
28
|
|
|
fcount *= 3 |
|
29
|
|
|
vcount *= 3 |
|
30
|
|
|
vtcount *= 3 |
|
31
|
|
|
vncount *= 3 |
|
32
|
|
|
|
|
33
|
|
|
self.tempVertices = [None] * vcount |
|
34
|
|
|
self.tempNormals = [None] * vncount |
|
35
|
|
|
|
|
36
|
|
|
self.tempUVs = [None] * fcount |
|
37
|
|
|
|
|
38
|
|
|
self.vertexIndices = [None] * fcount |
|
39
|
|
|
self.normalIndices = [None] * fcount |
|
40
|
|
|
self.uvIndices = [None] * fcount |
|
41
|
|
|
|
|
42
|
|
|
self.finalVertices = [None] * fcount |
|
43
|
|
|
self.finalNormals = [None] * fcount |
|
44
|
|
|
self.finalUVs = [None] * fcount |
|
45
|
|
|
|
|
46
|
|
|
self.fnumber = 0 |
|
47
|
|
|
self.vnumber = 0 |
|
48
|
|
|
self.vtnumber = 0 |
|
49
|
|
|
self.vnnumber = 0 |
|
50
|
|
|
|
|
51
|
|
|
# Process the data |
|
52
|
|
|
self.__process_in_house(objfile) |
|
53
|
|
|
# Finalize |
|
54
|
|
|
self.get_final_data() |
|
55
|
|
|
|
|
56
|
|
|
# Close the file |
|
57
|
|
|
objfile.close() |
|
58
|
|
|
|
|
59
|
|
|
def __process_in_house(self, objfl): |
|
60
|
|
|
with open(filename, "r") as objfl: |
|
61
|
|
|
|
|
62
|
|
|
for line in objfl: |
|
63
|
|
|
|
|
64
|
|
|
value = line.split() |
|
65
|
|
|
valueType = value[0] |
|
66
|
|
|
|
|
67
|
|
|
if valueType not in ['f', 'v', 'vt', 'vn']: |
|
68
|
|
|
continue |
|
69
|
|
|
|
|
70
|
|
|
value = value[1:] |
|
71
|
|
|
|
|
72
|
|
|
# Check first and continue on early because of string splitting |
|
73
|
|
|
if valueType == "f": |
|
74
|
|
|
temp = [item.split("/") for item in value] |
|
75
|
|
|
|
|
76
|
|
|
for i in range(3): |
|
77
|
|
|
if temp[i][1] != '': |
|
78
|
|
|
self.uvIndices[fnumber] = int(temp[i][1]) |
|
79
|
|
|
self.vertexIndices[fnumber] = int(temp[i][0]) |
|
80
|
|
|
self.normalIndices[fnumber] = int(temp[i][2]) |
|
81
|
|
|
fnumber += 1 |
|
82
|
|
|
|
|
83
|
|
|
continue |
|
84
|
|
|
|
|
85
|
|
|
value = list(map(float, value)) |
|
86
|
|
|
|
|
87
|
|
|
if valueType == "v": |
|
88
|
|
|
v = [value[0], value[1], value[2]] |
|
89
|
|
|
self.tempVertices[vnumber] = v |
|
90
|
|
|
self.vnumber += 1 |
|
91
|
|
|
|
|
92
|
|
|
elif valueType == "vt": |
|
93
|
|
|
vt = [value[0], value[0]] |
|
94
|
|
|
self.tempUVs[vtnumber] = vt |
|
95
|
|
|
self.vtnumber += 1 |
|
96
|
|
|
|
|
97
|
|
|
elif valueType == "vn": |
|
98
|
|
|
n = [value[0], value[1], value[2]] |
|
99
|
|
|
self.tempNormals[vnnumber] = n |
|
100
|
|
|
self.vnnumber += 1 |
|
101
|
|
|
|
|
102
|
|
|
def get_final_data(self): |
|
103
|
|
|
for i in range(fcount): |
|
104
|
|
|
vertexIndex = int(self.vertexIndices[i]) - 1 |
|
105
|
|
|
vertex = self.tempVertices[vertexIndex] |
|
106
|
|
|
self.finalVertices[i] = vertex |
|
107
|
|
|
|
|
108
|
|
|
normalIndex = self.normalIndices[i] |
|
109
|
|
|
normal = self.tempNormals[int(normalIndex) - 1] |
|
110
|
|
|
self.finalNormals[i] = normal |
|
111
|
|
|
|
|
112
|
|
|
if self.uvIndices[0] is None and vtcount != 0: |
|
113
|
|
|
uvIndex = self.uvIndices[i] |
|
114
|
|
|
uv = self.tempUVs[int(uvIndex) - 1] |
|
115
|
|
|
self.finalUVs[i] = uv |
|
116
|
|
|
|
|
117
|
|
|
class ObjMesh(MeshBase): |
|
118
|
|
|
def __init__(self, filePath, name, program, vertexLoc, normalLoc): |
|
119
|
|
|
super(ObjMesh, self).__init__(filePath, name, program, vertexLoc, normalLoc) |
|
120
|
|
|
|
explosiveduck /
ed2d
