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10b1f405
编写于
11月 03, 2015
作者:
M
Mr.doob
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Merge pull request #7529 from dhritzkiv/patch-4
Delete OBJMTLLoader.js
上级
de755c77
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examples/js/loaders/OBJMTLLoader.js
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/**
* Loads a Wavefront .obj file with materials
*
* @author mrdoob / http://mrdoob.com/
* @author angelxuanchang
*/
THREE
.
OBJMTLLoader
=
function
(
manager
)
{
this
.
manager
=
(
manager
!==
undefined
)
?
manager
:
THREE
.
DefaultLoadingManager
;
};
THREE
.
OBJMTLLoader
.
prototype
=
{
constructor
:
THREE
.
OBJMTLLoader
,
load
:
function
(
url
,
mtlurl
,
onLoad
,
onProgress
,
onError
)
{
var
scope
=
this
;
var
mtlLoader
=
new
THREE
.
MTLLoader
(
this
.
manager
);
mtlLoader
.
setBaseUrl
(
url
.
substr
(
0
,
url
.
lastIndexOf
(
"
/
"
)
+
1
)
);
mtlLoader
.
setCrossOrigin
(
this
.
crossOrigin
);
mtlLoader
.
load
(
mtlurl
,
function
(
materials
)
{
var
materialsCreator
=
materials
;
materialsCreator
.
preload
();
var
loader
=
new
THREE
.
XHRLoader
(
scope
.
manager
);
loader
.
setCrossOrigin
(
scope
.
crossOrigin
);
loader
.
load
(
url
,
function
(
text
)
{
var
object
=
scope
.
parse
(
text
);
object
.
traverse
(
function
(
object
)
{
if
(
object
instanceof
THREE
.
Mesh
)
{
if
(
object
.
material
.
name
)
{
var
material
=
materialsCreator
.
create
(
object
.
material
.
name
);
if
(
material
)
object
.
material
=
material
;
}
}
}
);
onLoad
(
object
);
},
onProgress
,
onError
);
},
onProgress
,
onError
);
},
setCrossOrigin
:
function
(
value
)
{
this
.
crossOrigin
=
value
;
},
/**
* Parses loaded .obj file
* @param data - content of .obj file
* @param mtllibCallback - callback to handle mtllib declaration (optional)
* @return {THREE.Object3D} - Object3D (with default material)
*/
parse
:
function
(
data
,
mtllibCallback
)
{
function
vector
(
x
,
y
,
z
)
{
return
new
THREE
.
Vector3
(
x
,
y
,
z
);
}
function
uv
(
u
,
v
)
{
return
new
THREE
.
Vector2
(
u
,
v
);
}
function
face3
(
a
,
b
,
c
,
normals
)
{
return
new
THREE
.
Face3
(
a
,
b
,
c
,
normals
);
}
var
face_offset
=
0
;
function
meshN
(
meshName
,
materialName
)
{
if
(
vertices
.
length
>
0
)
{
geometry
.
vertices
=
vertices
;
geometry
.
mergeVertices
();
geometry
.
computeFaceNormals
();
geometry
.
computeBoundingSphere
();
object
.
add
(
mesh
);
geometry
=
new
THREE
.
Geometry
();
mesh
=
new
THREE
.
Mesh
(
geometry
,
material
);
}
if
(
meshName
!==
undefined
)
mesh
.
name
=
meshName
;
if
(
materialName
!==
undefined
)
{
material
=
new
THREE
.
MeshLambertMaterial
();
material
.
name
=
materialName
;
mesh
.
material
=
material
;
}
}
var
group
=
new
THREE
.
Group
();
var
object
=
group
;
var
geometry
=
new
THREE
.
Geometry
();
var
material
=
new
THREE
.
MeshLambertMaterial
();
var
mesh
=
new
THREE
.
Mesh
(
geometry
,
material
);
var
vertices
=
[];
var
normals
=
[];
var
uvs
=
[];
function
add_face
(
a
,
b
,
c
,
normals_inds
)
{
if
(
normals_inds
===
undefined
)
{
geometry
.
faces
.
push
(
face3
(
parseInt
(
a
)
-
(
face_offset
+
1
),
parseInt
(
b
)
-
(
face_offset
+
1
),
parseInt
(
c
)
-
(
face_offset
+
1
)
)
);
}
else
{
geometry
.
faces
.
push
(
face3
(
parseInt
(
a
)
-
(
face_offset
+
1
),
parseInt
(
b
)
-
(
face_offset
+
1
),
parseInt
(
c
)
-
(
face_offset
+
1
),
[
normals
[
parseInt
(
normals_inds
[
0
]
)
-
1
].
clone
(),
normals
[
parseInt
(
normals_inds
[
1
]
)
-
1
].
clone
(),
normals
[
parseInt
(
normals_inds
[
2
]
)
-
1
].
clone
()
]
)
);
}
}
function
add_uvs
(
a
,
b
,
c
)
{
geometry
.
faceVertexUvs
[
0
].
push
(
[
uvs
[
parseInt
(
a
)
-
1
].
clone
(),
uvs
[
parseInt
(
b
)
-
1
].
clone
(),
uvs
[
parseInt
(
c
)
-
1
].
clone
()
]
);
}
function
handle_face_line
(
faces
,
uvs
,
normals_inds
)
{
if
(
faces
[
3
]
===
undefined
)
{
add_face
(
faces
[
0
],
faces
[
1
],
faces
[
2
],
normals_inds
);
if
(
!
(
uvs
===
undefined
)
&&
uvs
.
length
>
0
)
{
add_uvs
(
uvs
[
0
],
uvs
[
1
],
uvs
[
2
]
);
}
}
else
{
if
(
!
(
normals_inds
===
undefined
)
&&
normals_inds
.
length
>
0
)
{
add_face
(
faces
[
0
],
faces
[
1
],
faces
[
3
],
[
normals_inds
[
0
],
normals_inds
[
1
],
normals_inds
[
3
]
]
);
add_face
(
faces
[
1
],
faces
[
2
],
faces
[
3
],
[
normals_inds
[
1
],
normals_inds
[
2
],
normals_inds
[
3
]
]
);
}
else
{
add_face
(
faces
[
0
],
faces
[
1
],
faces
[
3
]
);
add_face
(
faces
[
1
],
faces
[
2
],
faces
[
3
]
);
}
if
(
!
(
uvs
===
undefined
)
&&
uvs
.
length
>
0
)
{
add_uvs
(
uvs
[
0
],
uvs
[
1
],
uvs
[
3
]
);
add_uvs
(
uvs
[
1
],
uvs
[
2
],
uvs
[
3
]
);
}
}
}
// v float float float
var
vertex_pattern
=
/v
(
+
[\d
|
\.
|
\+
|
\-
|e
]
+
)(
+
[\d
|
\.
|
\+
|
\-
|e
]
+
)(
+
[\d
|
\.
|
\+
|
\-
|e
]
+
)
/
;
// vn float float float
var
normal_pattern
=
/vn
(
+
[\d
|
\.
|
\+
|
\-
|e
]
+
)(
+
[\d
|
\.
|
\+
|
\-
|e
]
+
)(
+
[\d
|
\.
|
\+
|
\-
|e
]
+
)
/
;
// vt float float
var
uv_pattern
=
/vt
(
+
[\d
|
\.
|
\+
|
\-
|e
]
+
)(
+
[\d
|
\.
|
\+
|
\-
|e
]
+
)
/
;
// f vertex vertex vertex ...
var
face_pattern1
=
/f
(
+
\d
+
)(
+
\d
+
)(
+
\d
+
)(
+
\d
+
)?
/
;
// f vertex/uv vertex/uv vertex/uv ...
var
face_pattern2
=
/f
(
+
(\d
+
)\/(\d
+
))(
+
(\d
+
)\/(\d
+
))(
+
(\d
+
)\/(\d
+
))(
+
(\d
+
)\/(\d
+
))?
/
;
// f vertex/uv/normal vertex/uv/normal vertex/uv/normal ...
var
face_pattern3
=
/f
(
+
(\d
+
)\/(\d
+
)\/(\d
+
))(
+
(\d
+
)\/(\d
+
)\/(\d
+
))(
+
(\d
+
)\/(\d
+
)\/(\d
+
))(
+
(\d
+
)\/(\d
+
)\/(\d
+
))?
/
;
// f vertex//normal vertex//normal vertex//normal ...
var
face_pattern4
=
/f
(
+
(\d
+
)\/\/(\d
+
))(
+
(\d
+
)\/\/(\d
+
))(
+
(\d
+
)\/\/(\d
+
))(
+
(\d
+
)\/\/(\d
+
))?
/
;
//
var
lines
=
data
.
split
(
"
\n
"
);
for
(
var
i
=
0
;
i
<
lines
.
length
;
i
++
)
{
var
line
=
lines
[
i
];
line
=
line
.
trim
();
var
result
;
if
(
line
.
length
===
0
||
line
.
charAt
(
0
)
===
'
#
'
)
{
continue
;
}
else
if
(
(
result
=
vertex_pattern
.
exec
(
line
)
)
!==
null
)
{
// ["v 1.0 2.0 3.0", "1.0", "2.0", "3.0"]
vertices
.
push
(
vector
(
parseFloat
(
result
[
1
]
),
parseFloat
(
result
[
2
]
),
parseFloat
(
result
[
3
]
)
)
);
}
else
if
(
(
result
=
normal_pattern
.
exec
(
line
)
)
!==
null
)
{
// ["vn 1.0 2.0 3.0", "1.0", "2.0", "3.0"]
normals
.
push
(
vector
(
parseFloat
(
result
[
1
]
),
parseFloat
(
result
[
2
]
),
parseFloat
(
result
[
3
]
)
)
);
}
else
if
(
(
result
=
uv_pattern
.
exec
(
line
)
)
!==
null
)
{
// ["vt 0.1 0.2", "0.1", "0.2"]
uvs
.
push
(
uv
(
parseFloat
(
result
[
1
]
),
parseFloat
(
result
[
2
]
)
)
);
}
else
if
(
(
result
=
face_pattern1
.
exec
(
line
)
)
!==
null
)
{
// ["f 1 2 3", "1", "2", "3", undefined]
handle_face_line
(
[
result
[
1
],
result
[
2
],
result
[
3
],
result
[
4
]
]
);
}
else
if
(
(
result
=
face_pattern2
.
exec
(
line
)
)
!==
null
)
{
// ["f 1/1 2/2 3/3", " 1/1", "1", "1", " 2/2", "2", "2", " 3/3", "3", "3", undefined, undefined, undefined]
handle_face_line
(
[
result
[
2
],
result
[
5
],
result
[
8
],
result
[
11
]
],
//faces
[
result
[
3
],
result
[
6
],
result
[
9
],
result
[
12
]
]
//uv
);
}
else
if
(
(
result
=
face_pattern3
.
exec
(
line
)
)
!==
null
)
{
// ["f 1/1/1 2/2/2 3/3/3", " 1/1/1", "1", "1", "1", " 2/2/2", "2", "2", "2", " 3/3/3", "3", "3", "3", undefined, undefined, undefined, undefined]
handle_face_line
(
[
result
[
2
],
result
[
6
],
result
[
10
],
result
[
14
]
],
//faces
[
result
[
3
],
result
[
7
],
result
[
11
],
result
[
15
]
],
//uv
[
result
[
4
],
result
[
8
],
result
[
12
],
result
[
16
]
]
//normal
);
}
else
if
(
(
result
=
face_pattern4
.
exec
(
line
)
)
!==
null
)
{
// ["f 1//1 2//2 3//3", " 1//1", "1", "1", " 2//2", "2", "2", " 3//3", "3", "3", undefined, undefined, undefined]
handle_face_line
(
[
result
[
2
],
result
[
5
],
result
[
8
],
result
[
11
]
],
//faces
[
],
//uv
[
result
[
3
],
result
[
6
],
result
[
9
],
result
[
12
]
]
//normal
);
}
else
if
(
/^o /
.
test
(
line
)
)
{
// object
meshN
();
face_offset
=
face_offset
+
vertices
.
length
;
vertices
=
[];
object
=
new
THREE
.
Object3D
();
object
.
name
=
line
.
substring
(
2
).
trim
();
group
.
add
(
object
);
}
else
if
(
/^g /
.
test
(
line
)
)
{
// group
meshN
(
line
.
substring
(
2
).
trim
(),
undefined
);
}
else
if
(
/^usemtl /
.
test
(
line
)
)
{
// material
meshN
(
undefined
,
line
.
substring
(
7
).
trim
()
);
}
else
if
(
/^mtllib /
.
test
(
line
)
)
{
// mtl file
if
(
mtllibCallback
)
{
var
mtlfile
=
line
.
substring
(
7
);
mtlfile
=
mtlfile
.
trim
();
mtllibCallback
(
mtlfile
);
}
}
else
if
(
/^s /
.
test
(
line
)
)
{
// Smooth shading
}
else
{
console
.
log
(
"
THREE.OBJMTLLoader: Unhandled line
"
+
line
);
}
}
//Add last object
meshN
(
undefined
,
undefined
);
return
group
;
}
};
THREE
.
EventDispatcher
.
prototype
.
apply
(
THREE
.
OBJMTLLoader
.
prototype
);
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