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three.js
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3c5986bf
T
three.js
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体验新版 GitCode,发现更多精彩内容 >>
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3c5986bf
编写于
2月 06, 2013
作者:
B
Ben Houston
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
incorporate Line3 into Plane.
上级
e08369e8
变更
2
隐藏空白更改
内联
并排
Showing
2 changed file
with
18 addition
and
17 deletion
+18
-17
src/math/Plane.js
src/math/Plane.js
+9
-9
test/unit/math/Plane.js
test/unit/math/Plane.js
+9
-8
未找到文件。
src/math/Plane.js
浏览文件 @
3c5986bf
...
...
@@ -115,12 +115,12 @@ THREE.extend( THREE.Plane.prototype, {
},
isIntersectionLine
:
function
(
startPoint
,
endPoint
)
{
isIntersectionLine
:
function
(
line
)
{
// Note: this tests if a line intersects the plane, not whether it (or its end-points) are coplanar with it.
var
startSign
=
this
.
distanceToPoint
(
startPoin
t
);
var
endSign
=
this
.
distanceToPoint
(
endPoint
);
var
startSign
=
this
.
distanceToPoint
(
line
.
star
t
);
var
endSign
=
this
.
distanceToPoint
(
line
.
end
);
return
(
startSign
<
0
&&
endSign
>
0
)
||
(
endSign
<
0
&&
startSign
>
0
);
...
...
@@ -130,20 +130,20 @@ THREE.extend( THREE.Plane.prototype, {
var
v1
=
new
THREE
.
Vector3
();
return
function
(
startPoint
,
endPoint
,
optionalTarget
)
{
return
function
(
line
,
optionalTarget
)
{
var
result
=
optionalTarget
||
new
THREE
.
Vector3
();
var
direction
=
v1
.
subVectors
(
endPoint
,
startPoint
);
var
direction
=
line
.
delta
(
v1
);
var
denominator
=
this
.
normal
.
dot
(
direction
);
if
(
denominator
==
0
)
{
// line is coplanar, return origin
if
(
this
.
distanceToPoint
(
startPoin
t
)
==
0
)
{
if
(
this
.
distanceToPoint
(
line
.
star
t
)
==
0
)
{
return
result
.
copy
(
startPoin
t
);
return
result
.
copy
(
line
.
star
t
);
}
...
...
@@ -152,7 +152,7 @@ THREE.extend( THREE.Plane.prototype, {
}
var
t
=
-
(
startPoin
t
.
dot
(
this
.
normal
)
+
this
.
constant
)
/
denominator
;
var
t
=
-
(
line
.
star
t
.
dot
(
this
.
normal
)
+
this
.
constant
)
/
denominator
;
if
(
t
<
0
||
t
>
1
)
{
...
...
@@ -160,7 +160,7 @@ THREE.extend( THREE.Plane.prototype, {
}
return
result
.
copy
(
direction
).
multiplyScalar
(
t
).
add
(
startPoin
t
);
return
result
.
copy
(
direction
).
multiplyScalar
(
t
).
add
(
line
.
star
t
);
};
...
...
test/unit/math/Plane.js
浏览文件 @
3c5986bf
...
...
@@ -131,24 +131,25 @@ test( "distanceToSphere", function() {
test
(
"
isInterestionLine/intersectLine
"
,
function
()
{
var
a
=
new
THREE
.
Plane
(
new
THREE
.
Vector3
(
1
,
0
,
0
),
0
);
ok
(
a
.
isIntersectionLine
(
new
THREE
.
Vector3
(
-
10
,
0
,
0
),
new
THREE
.
Vector3
(
10
,
0
,
0
)
),
"
Passed!
"
);
ok
(
a
.
intersectLine
(
new
THREE
.
Vector3
(
-
10
,
0
,
0
),
new
THREE
.
Vector3
(
10
,
0
,
0
)
).
equals
(
new
THREE
.
Vector3
(
0
,
0
,
0
)
),
"
Passed!
"
);
var
l1
=
new
THREE
.
Line3
(
new
THREE
.
Vector3
(
-
10
,
0
,
0
),
new
THREE
.
Vector3
(
10
,
0
,
0
)
);
ok
(
a
.
isIntersectionLine
(
l1
),
"
Passed!
"
);
ok
(
a
.
intersectLine
(
l1
).
equals
(
new
THREE
.
Vector3
(
0
,
0
,
0
)
),
"
Passed!
"
);
a
=
new
THREE
.
Plane
(
new
THREE
.
Vector3
(
1
,
0
,
0
),
-
3
);
ok
(
a
.
isIntersectionLine
(
new
THREE
.
Vector3
(
-
10
,
0
,
0
),
new
THREE
.
Vector3
(
10
,
0
,
0
)
),
"
Passed!
"
);
ok
(
a
.
intersectLine
(
new
THREE
.
Vector3
(
-
10
,
0
,
0
),
new
THREE
.
Vector3
(
10
,
0
,
0
)
).
equals
(
new
THREE
.
Vector3
(
3
,
0
,
0
)
),
"
Passed!
"
);
ok
(
a
.
isIntersectionLine
(
l1
),
"
Passed!
"
);
ok
(
a
.
intersectLine
(
l1
).
equals
(
new
THREE
.
Vector3
(
3
,
0
,
0
)
),
"
Passed!
"
);
a
=
new
THREE
.
Plane
(
new
THREE
.
Vector3
(
1
,
0
,
0
),
-
11
);
ok
(
!
a
.
isIntersectionLine
(
new
THREE
.
Vector3
(
-
10
,
0
,
0
),
new
THREE
.
Vector3
(
10
,
0
,
0
)
),
"
Passed!
"
);
ok
(
a
.
intersectLine
(
new
THREE
.
Vector3
(
-
10
,
0
,
0
),
new
THREE
.
Vector3
(
10
,
0
,
0
)
)
===
undefined
,
"
Passed!
"
);
ok
(
!
a
.
isIntersectionLine
(
l1
),
"
Passed!
"
);
ok
(
a
.
intersectLine
(
l1
)
===
undefined
,
"
Passed!
"
);
a
=
new
THREE
.
Plane
(
new
THREE
.
Vector3
(
1
,
0
,
0
),
11
);
ok
(
!
a
.
isIntersectionLine
(
new
THREE
.
Vector3
(
-
10
,
0
,
0
),
new
THREE
.
Vector3
(
10
,
0
,
0
)
),
"
Passed!
"
);
ok
(
a
.
intersectLine
(
new
THREE
.
Vector3
(
-
10
,
0
,
0
),
new
THREE
.
Vector3
(
10
,
0
,
0
)
)
===
undefined
,
"
Passed!
"
);
ok
(
!
a
.
isIntersectionLine
(
l1
),
"
Passed!
"
);
ok
(
a
.
intersectLine
(
l1
)
===
undefined
,
"
Passed!
"
);
});
...
...
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