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8f4d7163
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three.js
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体验新版 GitCode,发现更多精彩内容 >>
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8f4d7163
编写于
12月 03, 2019
作者:
M
Mugen87
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
GLTFLoader: Embedd toTrianglesDrawMode().
上级
f56d4c28
变更
2
隐藏空白更改
内联
并排
Showing
2 changed file
with
203 addition
and
4 deletion
+203
-4
examples/js/loaders/GLTFLoader.js
examples/js/loaders/GLTFLoader.js
+100
-2
examples/jsm/loaders/GLTFLoader.js
examples/jsm/loaders/GLTFLoader.js
+103
-2
未找到文件。
examples/js/loaders/GLTFLoader.js
浏览文件 @
8f4d7163
...
...
@@ -2394,6 +2394,100 @@ THREE.GLTFLoader = ( function () {
}
/**
* @param {THREE.BufferGeometry} geometry
* @param {Number} drawMode
* @return {THREE.BufferGeometry}
*/
function
toTrianglesDrawMode
(
geometry
,
drawMode
)
{
var
index
=
geometry
.
getIndex
();
// generate index if not present
if
(
index
===
null
)
{
var
indices
=
[];
var
position
=
geometry
.
getAttribute
(
'
position
'
);
if
(
position
!==
undefined
)
{
for
(
var
i
=
0
;
i
<
position
.
count
;
i
++
)
{
indices
.
push
(
i
);
}
geometry
.
setIndex
(
indices
);
index
=
geometry
.
getIndex
();
}
else
{
console
.
error
(
'
THREE.GLTFLoader.toTrianglesDrawMode(): Undefined position attribute. Processing not possible.
'
);
return
geometry
;
}
}
//
var
numberOfTriangles
=
index
.
count
-
2
;
var
newIndices
=
[];
if
(
drawMode
===
THREE
.
TriangleFanDrawMode
)
{
// gl.TRIANGLE_FAN
for
(
var
i
=
1
;
i
<=
numberOfTriangles
;
i
++
)
{
newIndices
.
push
(
index
.
getX
(
0
)
);
newIndices
.
push
(
index
.
getX
(
i
)
);
newIndices
.
push
(
index
.
getX
(
i
+
1
)
);
}
}
else
{
// gl.TRIANGLE_STRIP
for
(
var
i
=
0
;
i
<
numberOfTriangles
;
i
++
)
{
if
(
i
%
2
===
0
)
{
newIndices
.
push
(
index
.
getX
(
i
)
);
newIndices
.
push
(
index
.
getX
(
i
+
1
)
);
newIndices
.
push
(
index
.
getX
(
i
+
2
)
);
}
else
{
newIndices
.
push
(
index
.
getX
(
i
+
2
)
);
newIndices
.
push
(
index
.
getX
(
i
+
1
)
);
newIndices
.
push
(
index
.
getX
(
i
)
);
}
}
}
if
(
(
newIndices
.
length
/
3
)
!==
numberOfTriangles
)
{
console
.
error
(
'
THREE.GLTFLoader.toTrianglesDrawMode(): Unable to generate correct amount of triangles.
'
);
}
// build final geometry
var
newGeometry
=
geometry
.
clone
();
newGeometry
.
setIndex
(
newIndices
);
return
newGeometry
;
}
/**
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#geometry
*
...
...
@@ -2524,9 +2618,13 @@ THREE.GLTFLoader = ( function () {
}
if
(
primitive
.
mode
===
WEBGL_CONSTANTS
.
TRIANGLE_STRIP
||
primitive
.
mode
===
WEBGL_CONSTANTS
.
TRIANGLE_FAN
)
{
if
(
primitive
.
mode
===
WEBGL_CONSTANTS
.
TRIANGLE_STRIP
)
{
mesh
.
geometry
=
toTrianglesDrawMode
(
mesh
.
geometry
,
THREE
.
TriangleStripDrawMode
);
}
else
if
(
primitive
.
mode
===
WEBGL_CONSTANTS
.
TRIANGLE_FAN
)
{
console
.
warn
(
'
THREE.GLTFLoader: The draw modes triangle strip and fan are not supported anymore.
'
);
mesh
.
geometry
=
toTrianglesDrawMode
(
mesh
.
geometry
,
THREE
.
TriangleFanDrawMode
);
}
...
...
examples/jsm/loaders/GLTFLoader.js
浏览文件 @
8f4d7163
...
...
@@ -63,6 +63,8 @@ import {
Sphere
,
SpotLight
,
TextureLoader
,
TriangleFanDrawMode
,
TriangleStripDrawMode
,
UniformsUtils
,
Vector2
,
Vector3
,
...
...
@@ -2459,6 +2461,101 @@ var GLTFLoader = ( function () {
}
/**
* @param {BufferGeometry} geometry
* @param {Number} drawMode
* @return {BufferGeometry}
*/
function
toTrianglesDrawMode
(
geometry
,
drawMode
)
{
var
index
=
geometry
.
getIndex
();
// generate index if not present
if
(
index
===
null
)
{
var
indices
=
[];
var
position
=
geometry
.
getAttribute
(
'
position
'
);
if
(
position
!==
undefined
)
{
for
(
var
i
=
0
;
i
<
position
.
count
;
i
++
)
{
indices
.
push
(
i
);
}
geometry
.
setIndex
(
indices
);
index
=
geometry
.
getIndex
();
}
else
{
console
.
error
(
'
THREE.GLTFLoader.toTrianglesDrawMode(): Undefined position attribute. Processing not possible.
'
);
return
geometry
;
}
}
//
var
numberOfTriangles
=
index
.
count
-
2
;
var
newIndices
=
[];
if
(
drawMode
===
TriangleFanDrawMode
)
{
// gl.TRIANGLE_FAN
for
(
var
i
=
1
;
i
<=
numberOfTriangles
;
i
++
)
{
newIndices
.
push
(
index
.
getX
(
0
)
);
newIndices
.
push
(
index
.
getX
(
i
)
);
newIndices
.
push
(
index
.
getX
(
i
+
1
)
);
}
}
else
{
// gl.TRIANGLE_STRIP
for
(
var
i
=
0
;
i
<
numberOfTriangles
;
i
++
)
{
if
(
i
%
2
===
0
)
{
newIndices
.
push
(
index
.
getX
(
i
)
);
newIndices
.
push
(
index
.
getX
(
i
+
1
)
);
newIndices
.
push
(
index
.
getX
(
i
+
2
)
);
}
else
{
newIndices
.
push
(
index
.
getX
(
i
+
2
)
);
newIndices
.
push
(
index
.
getX
(
i
+
1
)
);
newIndices
.
push
(
index
.
getX
(
i
)
);
}
}
}
if
(
(
newIndices
.
length
/
3
)
!==
numberOfTriangles
)
{
console
.
error
(
'
THREE.GLTFLoader.toTrianglesDrawMode(): Unable to generate correct amount of triangles.
'
);
}
// build final geometry
var
newGeometry
=
geometry
.
clone
();
newGeometry
.
setIndex
(
newIndices
);
newGeometry
.
clearGroups
();
return
newGeometry
;
}
/**
* Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#geometry
*
...
...
@@ -2589,9 +2686,13 @@ var GLTFLoader = ( function () {
}
if
(
primitive
.
mode
===
WEBGL_CONSTANTS
.
TRIANGLE_STRIP
||
primitive
.
mode
===
WEBGL_CONSTANTS
.
TRIANGLE_FAN
)
{
if
(
primitive
.
mode
===
WEBGL_CONSTANTS
.
TRIANGLE_STRIP
)
{
mesh
.
geometry
=
toTrianglesDrawMode
(
mesh
.
geometry
,
TriangleStripDrawMode
);
}
else
if
(
primitive
.
mode
===
WEBGL_CONSTANTS
.
TRIANGLE_FAN
)
{
console
.
warn
(
'
THREE.GLTFLoader: The draw modes triangle strip and fan are not supported anymore.
'
);
mesh
.
geometry
=
toTrianglesDrawMode
(
mesh
.
geometry
,
TriangleFanDrawMode
);
}
...
...
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