|
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
|
|
|
matcount = 0 |
|
13
|
|
|
|
|
14
|
|
|
__objpath = files.resolve_path('data', 'models', 'fileName' + '.obj') |
|
15
|
|
|
__mtlpath = files.resolve_path('data', 'models', 'fileName' + '.mtl') |
|
16
|
|
|
|
|
17
|
|
|
# Load the mtl file |
|
18
|
|
|
self.mtlfile = MTL(__mtlpath) |
|
19
|
|
|
|
|
20
|
|
|
# Load the obj file |
|
21
|
|
|
objfile = open(fileName, "r") |
|
22
|
|
|
|
|
23
|
|
|
# Do a head count |
|
24
|
|
|
for line in objfile: |
|
25
|
|
|
value = line[:2] |
|
26
|
|
|
if value == 'f ': |
|
27
|
|
|
fcount += 1 |
|
28
|
|
|
elif value == 'v ': |
|
29
|
|
|
vcount += 1 |
|
30
|
|
|
elif value == 'vt': |
|
31
|
|
|
vtcount += 1 |
|
32
|
|
|
elif value == 'vn': |
|
33
|
|
|
vncount += 1 |
|
34
|
|
|
elif value == 'g ': |
|
35
|
|
|
matcount += 1 |
|
36
|
|
|
|
|
37
|
|
|
# Close the file |
|
38
|
|
|
objfile.close() |
|
39
|
|
|
|
|
40
|
|
|
fcount *= 3 |
|
41
|
|
|
vcount *= 3 |
|
42
|
|
|
vtcount *= 3 |
|
43
|
|
|
vncount *= 3 |
|
44
|
|
|
|
|
45
|
|
|
self.tempVertices = [None] * vcount |
|
46
|
|
|
self.tempNormals = [None] * vncount |
|
47
|
|
|
self.tempUVs = [None] * fcount |
|
48
|
|
|
self.tempMaterials = [None] * matcount |
|
49
|
|
|
|
|
50
|
|
|
self.vertexIndices = [None] * fcount |
|
51
|
|
|
self.normalIndices = [None] * fcount |
|
52
|
|
|
self.uvIndices = [None] * fcount |
|
53
|
|
|
|
|
54
|
|
|
self.finalVertices = [None] * fcount |
|
55
|
|
|
self.finalNormals = [None] * fcount |
|
56
|
|
|
self.finalUVs = [None] * fcount |
|
57
|
|
|
self.usedMaterials = [None] * matcount |
|
58
|
|
|
|
|
59
|
|
|
self.fnumber = 0 |
|
60
|
|
|
self.vnumber = 0 |
|
61
|
|
|
self.vtnumber = 0 |
|
62
|
|
|
self.vnnumber = 0 |
|
63
|
|
|
self.matnumber = 0 |
|
64
|
|
|
|
|
65
|
|
|
self.tmvnig = {} |
|
66
|
|
|
self.fmvnig = {} |
|
67
|
|
|
|
|
68
|
|
|
# Process the data |
|
69
|
|
|
self.__process_in_house(__objpath) |
|
70
|
|
|
# Finalize |
|
71
|
|
|
self.get_final_data() |
|
72
|
|
|
|
|
73
|
|
|
def __process_in_house(self, filename): |
|
74
|
|
|
with open(filename, "r") as objfl: |
|
75
|
|
|
|
|
76
|
|
|
for line in objfl: |
|
77
|
|
|
|
|
78
|
|
|
value = line.split() |
|
79
|
|
|
valueType = value[0] |
|
80
|
|
|
|
|
81
|
|
|
# Don't bother unless the following key words exist in the line |
|
82
|
|
|
if valueType not in ['f', 'v', 'vt', 'vn', 'g', 'usemtl']: |
|
83
|
|
|
continue |
|
84
|
|
|
|
|
85
|
|
|
# Start ignoring the first word of the line to grab the values |
|
86
|
|
|
value = value[1:] |
|
87
|
|
|
matname = None |
|
88
|
|
|
# Check first and continue on early because of string splitting |
|
89
|
|
|
if valueType == "usemtl": |
|
90
|
|
|
matname = value[1] |
|
91
|
|
|
# Material Vertex UV Normal Indices Group (Vertex, UV, Normal) |
|
92
|
|
|
self.tmvnig[matname] = [[],[],[]] |
|
93
|
|
|
self.matnumber += 1 |
|
94
|
|
|
continue |
|
95
|
|
|
|
|
96
|
|
|
if valueType == "f": |
|
97
|
|
|
temp = [item.split("/") for item in value] |
|
98
|
|
|
|
|
99
|
|
|
for i in range(3): |
|
100
|
|
|
# 0 - Vertex |
|
101
|
|
|
# 1 - UV |
|
102
|
|
|
# 2 - Normal |
|
103
|
|
|
# Make sure UV index data exists |
|
104
|
|
|
if temp[i][1] != '': |
|
105
|
|
|
self.tmvnig[matname][1][self.fnumber] = int(temp[i][1]) |
|
106
|
|
|
self.tmvnig[matname][0][self.fnumber] = int(temp[i][0]) |
|
107
|
|
|
self.tmvnig[matname][2][self.fnumber] = int(temp[i][2]) |
|
108
|
|
|
self.fnumber += 1 |
|
109
|
|
|
continue |
|
110
|
|
|
|
|
111
|
|
|
# Map the values after the keyword to floats |
|
112
|
|
|
value = list(map(float, value)) |
|
113
|
|
|
|
|
114
|
|
|
if valueType == "v": |
|
115
|
|
|
v = [value[0], value[1], value[2]] |
|
116
|
|
|
self.tempVertices[self.vnumber] = v |
|
117
|
|
|
self.vnumber += 1 |
|
118
|
|
|
|
|
119
|
|
|
elif valueType == "vt": |
|
120
|
|
|
vt = [value[0], value[0]] |
|
121
|
|
|
self.tempUVs[self.vtnumber] = vt |
|
122
|
|
|
self.vtnumber += 1 |
|
123
|
|
|
|
|
124
|
|
|
elif valueType == "vn": |
|
125
|
|
|
n = [value[0], value[1], value[2]] |
|
126
|
|
|
self.tempNormals[self.vnnumber] = n |
|
127
|
|
|
self.vnnumber += 1 |
|
128
|
|
|
|
|
129
|
|
|
elif valueType == "g": |
|
130
|
|
|
g = value[0] |
|
131
|
|
|
self.tempMaterials[self.matnumber] = g |
|
132
|
|
|
self.matnumber += 1 |
|
133
|
|
|
|
|
134
|
|
|
def get_final_data(self): |
|
135
|
|
|
for j in range(self.matnumber): |
|
136
|
|
|
matrname = self.tmvnig.keys[j] |
|
137
|
|
|
for i in range(self.fcount): |
|
138
|
|
|
vertexIndex = int(self.tmvnig[matrname][0][i]) - 1 |
|
139
|
|
|
vertex = self.tempVertices[vertexIndex] |
|
140
|
|
|
self.fmvnig[matrname][0][i] = vertex |
|
141
|
|
|
|
|
142
|
|
|
normalIndex = int(self.tmvnig[matrname][2][i]) - 1 |
|
143
|
|
|
normal = self.tempNormals[normalIndex] |
|
144
|
|
|
self.fmvnig[matrname][2][i] = normal |
|
145
|
|
|
|
|
146
|
|
|
if self.uvIndices[0] is None and self.vtcount != 0: |
|
147
|
|
|
uvIndex = int(self.tmvnig[matrname][1][i]) - 1 |
|
148
|
|
|
uv = self.tempUVs[uvIndex] |
|
149
|
|
|
self.fmvnig[matrname][1][i] = uv |
|
150
|
|
|
|
|
151
|
|
|
class ObjMesh(MeshBase): |
|
152
|
|
|
def __init__(self, filePath, name, program, vertexLoc, normalLoc): |
|
153
|
|
|
super(ObjMesh, self).__init__(filePath, name, program, vertexLoc, normalLoc) |
|
154
|
|
|
|
explosiveduck /
ed2d
