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699ad0b3
T
three.js
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体验新版 GitCode,发现更多精彩内容 >>
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699ad0b3
编写于
4月 29, 2015
作者:
M
Mr.doob
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
CircleBufferGeometry: Clean up.
上级
c94cb5fe
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
11 addition
and
14 deletion
+11
-14
src/extras/geometries/CircleBufferGeometry.js
src/extras/geometries/CircleBufferGeometry.js
+11
-14
未找到文件。
src/extras/geometries/CircleBufferGeometry.js
浏览文件 @
699ad0b3
...
...
@@ -21,38 +21,34 @@ THREE.CircleBufferGeometry = function ( radius, segments, thetaStart, thetaLengt
thetaStart
=
thetaStart
!==
undefined
?
thetaStart
:
0
;
thetaLength
=
thetaLength
!==
undefined
?
thetaLength
:
Math
.
PI
*
2
;
var
i
;
var
vertices
=
segments
+
2
;
var
positions
=
new
Float32Array
(
3
*
vertices
);
this
.
addAttribute
(
'
position
'
,
new
THREE
.
BufferAttribute
(
positions
,
3
)
);
var
normals
=
new
Float32Array
(
3
*
vertices
);
this
.
addAttribute
(
'
normal
'
,
new
THREE
.
BufferAttribute
(
normals
,
3
)
);
var
uvs
=
new
Float32Array
(
2
*
vertices
);
this
.
addAttribute
(
'
uv
'
,
new
THREE
.
BufferAttribute
(
uvs
,
2
)
);
var
positions
=
new
Float32Array
(
vertices
*
3
);
var
normals
=
new
Float32Array
(
vertices
*
3
);
var
uvs
=
new
Float32Array
(
vertices
*
2
);
// center data is already zero, but need to set a few extras
normals
[
3
]
=
1.0
;
uvs
[
0
]
=
0.5
;
uvs
[
1
]
=
0.5
;
for
(
s
=
0
,
i
=
3
,
ii
=
2
;
s
<
vertices
;
s
++
,
i
+=
3
,
ii
+=
2
)
{
for
(
var
s
=
0
,
i
=
3
,
ii
=
2
;
s
<
vertices
;
s
++
,
i
+=
3
,
ii
+=
2
)
{
var
segment
=
thetaStart
+
s
/
segments
*
thetaLength
;
positions
[
i
]
=
radius
*
Math
.
cos
(
segment
);
positions
[
i
]
=
radius
*
Math
.
cos
(
segment
);
positions
[
i
+
1
]
=
radius
*
Math
.
sin
(
segment
);
normals
[
i
+
2
]
=
1
;
// normal z
uvs
[
ii
]
=
(
positions
[
i
]
/
radius
+
1
)
/
2
;
uvs
[
ii
+
1
]
=
(
positions
[
i
+
1
]
/
radius
+
1
)
/
2
;
uvs
[
ii
]
=
(
positions
[
i
]
/
radius
+
1
)
/
2
;
uvs
[
ii
+
1
]
=
(
positions
[
i
+
1
]
/
radius
+
1
)
/
2
;
}
var
indices
=
[];
for
(
i
=
1
;
i
<=
segments
;
i
++
)
{
for
(
var
i
=
1
;
i
<=
segments
;
i
++
)
{
indices
.
push
(
i
);
indices
.
push
(
i
+
1
);
...
...
@@ -61,8 +57,9 @@ THREE.CircleBufferGeometry = function ( radius, segments, thetaStart, thetaLengt
}
this
.
addAttribute
(
'
index
'
,
new
THREE
.
BufferAttribute
(
new
Uint16Array
(
indices
),
1
)
);
this
.
computeFaceNormals
();
this
.
addAttribute
(
'
position
'
,
new
THREE
.
BufferAttribute
(
positions
,
3
)
);
this
.
addAttribute
(
'
normal
'
,
new
THREE
.
BufferAttribute
(
normals
,
3
)
);
this
.
addAttribute
(
'
uv
'
,
new
THREE
.
BufferAttribute
(
uvs
,
2
)
);
this
.
boundingSphere
=
new
THREE
.
Sphere
(
new
THREE
.
Vector3
(),
radius
);
...
...
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