Class: OrthographicCamera

正交相机（在这种投影模式下，无论物体距离相机距离远或者近，在最终渲染的图片中物体的大小都保持不变）

代码示例：

const camera = new OrthographicCamera(width / - 2, width / 2, height / 2, height / - 2, 1, 1000);
scene.add(camera);

Hierarchy

• Camera

  ↳ OrthographicCamera

Table of contents

Constructors

• constructor

Properties

• cameraType
• projectionMatrix
• viewMatrix
• projectionViewMatrix
• worldPosition
• frustum
• visible
• localMatrix
• worldMatrix
• matrixAutoUpdate
• position
• scale
• rotation
• quaternion
• up
• children
• parent
• worldMatrixNeedsUpdate

Accessors

• near
• far
• fov
• aspect
• zoom
• bounds

Methods

• perspective
• orthographic
• lookAt
• updateMatrixWorld
• frustumIntersectsMesh
• project
• unproject
• updateProjectionMatrix
• add
• remove
• contains
• setParent
• traverse
• updateMatrix
• decompose
• clone
• copy

Constructors

constructor

• new OrthographicCamera(left, right, top, bottom, near, far, zoom?): OrthographicCamera

Parameters

Name	Type	Default value
left	any	undefined
right	any	undefined
top	any	undefined
bottom	any	undefined
near	any	undefined
far	any	undefined
zoom	number	1

Returns

OrthographicCamera

Overrides

Camera.constructor

Defined in

src/cameras/OrthographicCamera.ts:14

Properties

cameraType

• cameraType: CameraType

相机类型（默认有两种相机：perspective和orthographic）

Inherited from

Camera.cameraType

Defined in

src/cameras/Camera.ts:76

---

projectionMatrix

• projectionMatrix: ProjectionMatrix

投影矩阵

Inherited from

Camera.projectionMatrix

Defined in

src/cameras/Camera.ts:81

---

viewMatrix

• viewMatrix: Matrix4

视图矩阵

Inherited from

Camera.viewMatrix

Defined in

src/cameras/Camera.ts:86

---

projectionViewMatrix

• projectionViewMatrix: ProjectionMatrix

pv矩阵，它是 projectionMatrix和viewMatrix 的乘积

Inherited from

Camera.projectionViewMatrix

Defined in

src/cameras/Camera.ts:91

---

worldPosition

• worldPosition: Vector3

世界位置坐标

Inherited from

Camera.worldPosition

Defined in

src/cameras/Camera.ts:96

---

frustum

• frustum: Matrix4

Inherited from

Camera.frustum

Defined in

src/cameras/Camera.ts:128

---

visible

• visible: boolean

是否可见

Inherited from

Camera.visible

Defined in

src/objects/Object3D.ts:14

---

localMatrix

• localMatrix: ProjectionMatrix

局部变换矩阵

Inherited from

Camera.localMatrix

Defined in

src/objects/Object3D.ts:19

---

worldMatrix

• worldMatrix: ProjectionMatrix

物体的世界变换矩阵 (如果没有父级，那么他和局部变化矩阵相同)

Inherited from

Camera.worldMatrix

Defined in

src/objects/Object3D.ts:24

---

matrixAutoUpdate

• matrixAutoUpdate: boolean

当这个属性设置了之后，它将计算每一帧的位移、旋转（四元变换）和缩放矩阵，并重新计算 worldMatrix 属性

Inherited from

Camera.matrixAutoUpdate

Defined in

src/objects/Object3D.ts:29

---

position

• position: Vector3

物体局部位置

Inherited from

Camera.position

Defined in

src/objects/Object3D.ts:34

---

scale

• scale: Vector3

物体的局部缩放

Inherited from

Camera.scale

Defined in

src/objects/Object3D.ts:39

---

rotation

• rotation: Euler

物体的局部旋转

Inherited from

Camera.rotation

Defined in

src/objects/Object3D.ts:44

---

quaternion

• quaternion: Quaternion

物体的局部旋转

Inherited from

Camera.quaternion

Defined in

src/objects/Object3D.ts:49

---

up

• up: Vector3

物体的朝向

Inherited from

Camera.up

Defined in

src/objects/Object3D.ts:54

---

children

• children: Object3D[]

对象子级

Inherited from

Camera.children

Defined in

src/objects/Object3D.ts:59

---

parent

• parent: WithNull<Object3D>

对象父级

Inherited from

Camera.parent

Defined in

src/objects/Object3D.ts:64

---

worldMatrixNeedsUpdate

• worldMatrixNeedsUpdate: boolean

当这个属性设置了之后，它将计算在那一帧中的 worldMatrix，并将这个值重置为false。默认值为false

Inherited from

Camera.worldMatrixNeedsUpdate

Defined in

src/objects/Object3D.ts:69

Accessors

near

• get near(): number

获取像机的近端面

Returns

number

Inherited from

Camera.near

Defined in

src/cameras/Camera.ts:172

• set near(n): void

设置像机的近端面，并更新摄像机投影矩阵

Parameters

Name	Type	Description
n	number	near

Returns

void

Inherited from

Camera.near

Defined in

src/cameras/Camera.ts:180

---

far

• get far(): number

获取像机的远端面

Returns

number

Inherited from

Camera.far

Defined in

src/cameras/Camera.ts:188

• set far(f): void

设置像机的远端面，并更新摄像机投影矩阵

Parameters

Name	Type
f	number

Returns

void

Inherited from

Camera.far

Defined in

src/cameras/Camera.ts:196

---

fov

• get fov(): number

获取摄像机视锥体垂直视野角度

Returns

number

Inherited from

Camera.fov

Defined in

src/cameras/Camera.ts:204

• set fov(f): void

设置摄像机视锥体垂直视野角度，并更新摄像机投影矩阵

Parameters

Name	Type	Description
f	number	角度值

Returns

void

Inherited from

Camera.fov

Defined in

src/cameras/Camera.ts:212

---

aspect

• get aspect(): number

获取相机视锥体的纵横比

Returns

number

Inherited from

Camera.aspect

Defined in

src/cameras/Camera.ts:220

• set aspect(aspect): void

设置相机视锥体的纵横比，并更新摄像机投影矩阵

Parameters

Name	Type
aspect	number

Returns

void

Inherited from

Camera.aspect

Defined in

src/cameras/Camera.ts:228

---

zoom

• get zoom(): number

获取相机的缩放倍数

Returns

number

Inherited from

Camera.zoom

Defined in

src/cameras/Camera.ts:236

• set zoom(zoom): void

设置相机的缩放倍数，并更新摄像机投影矩阵

Parameters

Name	Type
zoom	number

Returns

void

Inherited from

Camera.zoom

Defined in

src/cameras/Camera.ts:244

---

bounds

• get bounds(): WithUndef<Bounds>

获取像机视锥体的范围

Returns

WithUndef<Bounds>

Inherited from

Camera.bounds

Defined in

src/cameras/Camera.ts:252

• set bounds(bounds): void

设置相机像机视锥体的范围，并更新摄像机投影矩阵

Parameters

Name	Type
bounds	WithUndef<Bounds>

Returns

void

Inherited from

Camera.bounds

Defined in

src/cameras/Camera.ts:260

Methods

perspective

▸ perspective(fov?, aspect?, near?, far?): void

创建或者更新 projectionMatrix 透视相机矩阵

Parameters

Name	Type
fov	number
aspect	number
near	number
far	number

Returns

void

Inherited from

Camera.perspective

Defined in

src/cameras/Camera.ts:272

---

orthographic

▸ orthographic(left, right, top, bottom, near?, far?, zoom?): void

创建或者更新 projectionMatrix 平面相机矩阵

Parameters

Name	Type	Default value
left	any	undefined
right	any	undefined
top	any	undefined
bottom	any	undefined
near	number	undefined
far	number	undefined
zoom	number	1

Returns

void

Inherited from

Camera.orthographic

Defined in

src/cameras/Camera.ts:292

---

lookAt

▸ lookAt(t): OrthographicCamera

设置相机的朝向

Parameters

Name	Type	Description
t	any	朝向位置，是一个三维向量

Returns

OrthographicCamera

Inherited from

Camera.lookAt

Defined in

src/cameras/Camera.ts:317

---

updateMatrixWorld

▸ updateMatrixWorld(): OrthographicCamera

用于更新一个对象的世界矩阵。 每个可视对象都有一个叫做 worldMatrix 的矩阵，表示这个对象在世界坐标系中的位置和方向。 当您修改对象的位置、旋转或缩放时，对象的 worldMatrix 矩阵会发生变化。如果您希望将这些变化反映到场景中，就需要调用 updateMatrixWorld 函数。

Returns

OrthographicCamera

Inherited from

Camera.updateMatrixWorld

Defined in

src/cameras/Camera.ts:327

---

frustumIntersectsMesh

▸ frustumIntersectsMesh(node, worldMatrix?): boolean

判断 mesh 是否在相机视椎体内

Parameters

Name	Type	Default value
node	any	undefined
worldMatrix	any	node.worldMatrix

Returns

boolean

Inherited from

Camera.frustumIntersectsMesh

Defined in

src/cameras/Camera.ts:340

---

project

▸ project(v): OrthographicCamera

转换到世界坐标

Parameters

Name	Type
v	any

Returns

OrthographicCamera

Inherited from

Camera.project

Defined in

src/cameras/Camera.ts:376

---

unproject

▸ unproject(v): OrthographicCamera

Parameters

Name	Type
v	any

Returns

OrthographicCamera

Inherited from

Camera.unproject

Defined in

src/cameras/Camera.ts:382

---

updateProjectionMatrix

▸ updateProjectionMatrix(): void

更新投影矩阵

Returns

void

Overrides

Camera.updateProjectionMatrix

Defined in

src/cameras/OrthographicCamera.ts:31

---

add

▸ add(object, notifyChild?): void

添加对象到这个对象的子级

Parameters

Name	Type	Default value
object	Object3D	undefined
notifyChild	boolean	true

Returns

void

Inherited from

Camera.add

Defined in

src/objects/Object3D.ts:97

---

remove

▸ remove(object, notifyChild?): void

从此对象移除传入的对象（如果存在）

Parameters

Name	Type	Default value
object	Object3D	undefined
notifyChild	boolean	true

Returns

void

Inherited from

Camera.remove

Defined in

src/objects/Object3D.ts:111

---

contains

▸ contains(object): boolean

判断此渲染对象的子集是否包含传入的渲染对象

Parameters

Name	Type
object	Object3D

Returns

boolean

Inherited from

Camera.contains

Defined in

src/objects/Object3D.ts:124

---

setParent

▸ setParent(object, notifyParent?): void

设置此渲染对象的父集

Parameters

Name	Type	Default value	Description
object	any	undefined	渲染对象
notifyParent	boolean	true	设置是否将此渲染对象添加到传入的渲染对象中

Returns

void

Inherited from

Camera.setParent

Defined in

src/objects/Object3D.ts:133

---

traverse

▸ traverse(callback): void

遍历此对象（包含子对象）

Parameters

Name	Type	Description
callback	any	回调函数

Returns

void

Inherited from

Camera.traverse

Defined in

src/objects/Object3D.ts:147

---

updateMatrix

▸ updateMatrix(): void

更新局部变换矩阵

Returns

void

Inherited from

Camera.updateMatrix

Defined in

src/objects/Object3D.ts:200

---

decompose

▸ decompose(): void

从局部矩阵计算位置，旋转和缩放

Returns

void

Inherited from

Camera.decompose

Defined in

src/objects/Object3D.ts:208

---

clone

▸ clone(): Object3D

克隆此渲染对象

Returns

Object3D

Inherited from

Camera.clone

Defined in

src/objects/Object3D.ts:218

---

copy

▸ copy(object, recursive?): OrthographicCamera

复制给定的对象到这个对象中

Parameters

Name	Type	Description
object	Object3D	渲染对象
recursive?	boolean	设置是否复制子对象

Returns

OrthographicCamera

Inherited from

Camera.copy

Defined in

src/objects/Object3D.ts:227