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Class: ProjectionMatrix

一个表示 4*4 的矩阵 1--0--0--0 | | | | 0--1--0--0 | | | | 0--0--1--0 | | | | 0--0--0--1

const m = new Matrix4();

Hierarchy

Matrix4

↳ ProjectionMatrix

Constructors

constructor

• new ProjectionMatrix(m00?, m01?, m02?, m03?, m10?, m11?, m12?, m13?, m20?, m21?, m22?, m23?, m30?, m31?, m32?, m33?): ProjectionMatrix

Parameters

Name	Type	Default value	Description
`m00`	`number`	`1`	第一行第一列，默认是 1
`m01`	`number`	`0`	第一行第二列，默认是 0
`m02`	`number`	`0`	第一行第三列，默认是 0
`m03`	`number`	`0`	第一行第四列，默认是 0
`m10`	`number`	`0`	第二行第一列，默认是 0
`m11`	`number`	`1`	第二行第二列，默认是 1
`m12`	`number`	`0`	第二行第三列，默认是 0
`m13`	`number`	`0`	第二行第四列，默认是 0
`m20`	`number`	`0`	第三行第一列，默认是 0
`m21`	`number`	`0`	第三行第二列，默认是 0
`m22`	`number`	`1`	第三行第三列，默认是 1
`m23`	`number`	`0`	第三行第四列，默认是 0
`m30`	`number`	`0`	第四行第一列，默认是 0
`m31`	`number`	`0`	第四行第二列，默认是 0
`m32`	`number`	`0`	第四行第三列，默认是 0
`m33`	`number`	`1`	第四行第四列，默认是 1

Returns

ProjectionMatrix

Inherited from

Matrix4.constructor

Defined in

src/math/Matrix4.ts:77

Properties

elements

• elements: Float32Array | Float64Array

Inherited from

Matrix4.elements

Defined in

src/math/Matrix4.ts:57

Accessors

x

• get x(): number

获取向量 x 值

Returns

number

number;

Inherited from

Matrix4.x

Defined in

src/math/Matrix4.ts:123

y

• get y(): number

获取向量 y 值

Returns

number

number;

Inherited from

Matrix4.y

Defined in

src/math/Matrix4.ts:131

z

• get z(): number

获取向量 z 值

Returns

number

number;

Inherited from

Matrix4.z

Defined in

src/math/Matrix4.ts:139

w

• get w(): number

获取向量 w 值

Returns

number

number;

Inherited from

Matrix4.w

Defined in

src/math/Matrix4.ts:147

identity

• get identity(): Matrix4

获取单位矩阵

Returns

Inherited from

Matrix4.identity

Defined in

src/math/Matrix4.ts:154

Methods

fromArray

▸ fromArray(array, offset?): ProjectionMatrix

从数组构建矩阵

Parameters

Name	Type	Default value	Description
`array`	`any`	`undefined`	原始数组
`offset`	`number`	`0`	数组偏移量

Returns

ProjectionMatrix

Inherited from

Matrix4.fromArray

Defined in

src/math/Matrix.ts:15

toArray

▸ toArray(out?, offset?): Float32Array | Float64Array | number[]

从矩阵转换到数组

Parameters

Name	Type	Default value	Description
`out`	`Float32Array` \| `Float64Array` \| `number`[]	`[]`	输出数据
`offset`	`number`	`0`	偏移量

Returns

Float32Array | Float64Array | number[]

Inherited from

Matrix4.toArray

Defined in

src/math/Matrix.ts:28

set

▸ set(m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23, m30, m31, m32, m33): ProjectionMatrix

将此矩阵的每一项设置为给定的值

Parameters

Name	Type
`m00`	`any`
`m01`	`any`
`m02`	`any`
`m03`	`any`
`m10`	`any`
`m11`	`any`
`m12`	`any`
`m13`	`any`
`m20`	`any`
`m21`	`any`
`m22`	`any`
`m23`	`any`
`m30`	`any`
`m31`	`any`
`m32`	`any`
`m33`	`any`

Returns

ProjectionMatrix

Inherited from

Defined in

src/math/Matrix4.ts:177

transpose

▸ transpose(): ProjectionMatrix

将此矩阵转换为转置矩阵

Returns

ProjectionMatrix

this

Inherited from

Matrix4.transpose

Defined in

src/math/Matrix4.ts:186

invert

▸ invert(m?): ProjectionMatrix

将此矩阵转换为逆矩阵

Parameters

Name	Type	Description
`m`	`ProjectionMatrix`	默认为当前实例

Returns

ProjectionMatrix

Matrix4

Inherited from

Defined in

src/math/Matrix4.ts:196

adjoint

▸ adjoint(m?): ProjectionMatrix

计算此矩阵的伴随矩阵

Parameters

Name	Type	Description
`m`	`ProjectionMatrix`	默认为当前实例

Returns

ProjectionMatrix

Inherited from

Matrix4.adjoint

Defined in

src/math/Matrix4.ts:205

determinant

▸ determinant(): any

计算行列式

Returns

any

Inherited from

Matrix4.determinant

Defined in

src/math/Matrix4.ts:214

add

▸ add(a, b?): ProjectionMatrix

将两个 Matrix4 矩阵相加

Parameters

Name	Type	Description
`a`	`Matrix4`
`b?`	`Matrix4`	如果不传，计算 this 和 a 的和

Returns

ProjectionMatrix

this

Inherited from

Defined in

src/math/Matrix4.ts:224

subtract

▸ subtract(a, b?): ProjectionMatrix

将两个 Matrix4 矩阵相减

Parameters

Name	Type	Description
`a`	`Matrix4`
`b?`	`Matrix4`	如果不传，计算 this 和 a 的差

Returns

ProjectionMatrix

this

Inherited from

Matrix4.subtract

Defined in

src/math/Matrix4.ts:240

multiply

▸ multiply(a, b?): ProjectionMatrix

计算两个 Matrix4 矩阵的乘积

Parameters

Name	Type	Description
`a`	`Matrix4`
`b?`	`Matrix4`	如果不传，计算 this 和 a 的乘积

Returns

ProjectionMatrix

this

Inherited from

Matrix4.multiply

Defined in

src/math/Matrix4.ts:255

multiplyScalar

▸ multiplyScalar(a?, b?): ProjectionMatrix

计算 Matrix4 与标量的乘积

Parameters

Name	Type	Description
`a`	`Matrix4`	如果不传，计算 this 和 b 的乘积
`b?`	`number`

Returns

ProjectionMatrix

Inherited from

Matrix4.multiplyScalar

Defined in

src/math/Matrix4.ts:269

premultiply

▸ premultiply(a, b?): ProjectionMatrix

左乘

Parameters

Name	Type	Description
`a`	`Matrix4`
`b?`	`Matrix4`	如果不传，计算 this 和 a 的左乘

Returns

ProjectionMatrix

this

Inherited from

Matrix4.premultiply

Defined in

src/math/Matrix4.ts:280

translate

▸ translate(v): ProjectionMatrix

通过给定的向量 Vector3 平移此矩阵

Parameters

Name	Type	Description
`v`	`Vector3`	向量

Returns

ProjectionMatrix

this

Inherited from

Matrix4.translate

Defined in

src/math/Matrix4.ts:294

rotate

▸ rotate(rad): ProjectionMatrix

旋转此矩阵

Parameters

Name	Type	Description
`rad`	`number`	弧度

Returns

ProjectionMatrix

this

Inherited from

Defined in

src/math/Matrix4.ts:304

scale

▸ scale(vec3): ProjectionMatrix

通过给定的 Vector3 向量缩放此矩阵

Parameters

Name	Type
`vec3`	`Vector3`

Returns

ProjectionMatrix

Inherited from

Defined in

src/math/Matrix4.ts:313

scaleScalar

▸ scaleScalar(s): ProjectionMatrix

通过标量 s 缩放此矩阵，默认在内部构建一个三维向量 [s, s, s]

Parameters

Name	Type
`s`	`number`

Returns

ProjectionMatrix

Inherited from

Matrix4.scaleScalar

Defined in

src/math/Matrix4.ts:322

fromTranslation

▸ fromTranslation(vec): ProjectionMatrix

从平移向量创建矩阵

Parameters

Name	Type
`vec`	`Vector3`

Returns

ProjectionMatrix

Inherited from

Matrix4.fromTranslation

Defined in

src/math/Matrix4.ts:331

fromRotation

▸ fromRotation(rad, axis): ProjectionMatrix

从给定轴和旋转角度创建矩阵

Parameters

Name	Type	Description
`rad`	`number`	弧度
`axis`	`any`	轴

Returns

ProjectionMatrix

Inherited from

Matrix4.fromRotation

Defined in

src/math/Matrix4.ts:341

fromRotationX

▸ fromRotationX(rad): ProjectionMatrix

从绕 X 轴的给定角度创建矩阵

Parameters

Name	Type
`rad`	`number`

Returns

ProjectionMatrix

Inherited from

Matrix4.fromRotationX

Defined in

src/math/Matrix4.ts:350

fromRotationY

▸ fromRotationY(rad): ProjectionMatrix

从绕 Y 轴的给定角度创建矩阵

Parameters

Name	Type
`rad`	`number`

Returns

ProjectionMatrix

Inherited from

Matrix4.fromRotationY

Defined in

src/math/Matrix4.ts:359

fromRotationZ

▸ fromRotationZ(rad): ProjectionMatrix

从绕 Z 轴的给定角度创建矩阵

Parameters

Name	Type
`rad`	`any`

Returns

ProjectionMatrix

Inherited from

Matrix4.fromRotationZ

Defined in

src/math/Matrix4.ts:368

fromScale

▸ fromScale(vec): ProjectionMatrix

从缩放向量计算矩阵

Parameters

Name	Type
`vec`	`Vector3`

Returns

ProjectionMatrix

Inherited from

Matrix4.fromScale

Defined in

src/math/Matrix4.ts:377

fromRotationTranslation

▸ fromRotationTranslation(quat, v): ProjectionMatrix

从平移向量和四元数计算矩阵

Parameters

Name	Type
`quat`	`Quaternion`
`v`	`Vector3`

Returns

ProjectionMatrix

Inherited from

Matrix4.fromRotationTranslation

Defined in

src/math/Matrix4.ts:387

fromPerspective

▸ fromPerspective(fov, aspect, near, far): ProjectionMatrix

创建一个透视投影矩阵

Parameters

Name	Type
`fov`	`any`
`aspect`	`any`
`near`	`any`
`far`	`any`

Returns

ProjectionMatrix

Inherited from

Matrix4.fromPerspective

Defined in

src/math/Matrix4.ts:399

fromOrthogonal

▸ fromOrthogonal(left, right, bottom, top, near, far): ProjectionMatrix

创建一个正交投影矩阵

Parameters

Name	Type
`left`	`any`
`right`	`any`
`bottom`	`any`
`top`	`any`
`near`	`any`
`far`	`any`

Returns

ProjectionMatrix

Inherited from

Matrix4.fromOrthogonal

Defined in

src/math/Matrix4.ts:413

fromQuat

▸ fromQuat(q): ProjectionMatrix

从给定的四元数计算矩阵

Parameters

Name	Type
`q`	`Quaternion`

Returns

ProjectionMatrix

Inherited from

Matrix4.fromQuat

Defined in

src/math/Matrix4.ts:422

equals

▸ equals(mat4): any

判断两个矩阵是否近似相等

Parameters

Name	Type
`mat4`	`any`

Returns

any

Inherited from

Defined in

src/math/Matrix4.ts:431

getRotation

▸ getRotation(q?): Quaternion

获取旋转向量

Parameters

Name	Type
`q`	`Quaternion`

Returns

Inherited from

Matrix4.getRotation

Defined in

src/math/Matrix4.ts:439

getScale

▸ getScale(v?): Vector3

获取缩放向量

Parameters

Name	Type
`v`	`Vector3`

Returns

Inherited from

Matrix4.getScale

Defined in

src/math/Matrix4.ts:449

getTranslation

▸ getTranslation(v?): Vector3

获取平移向量

Parameters

Name	Type
`v`	`Vector3`

Returns

Inherited from

Matrix4.getTranslation

Defined in

src/math/Matrix4.ts:459

rotateX

▸ rotateX(rad): ProjectionMatrix

围绕 X 轴按给定弧度旋转矩阵

Parameters

Name	Type
`rad`	`any`

Returns

ProjectionMatrix

Inherited from

Matrix4.rotateX

Defined in

src/math/Matrix4.ts:469

rotateY

▸ rotateY(rad): ProjectionMatrix

围绕 Y 轴按给定弧度旋转矩阵

Parameters

Name	Type
`rad`	`any`

Returns

ProjectionMatrix

Inherited from

Matrix4.rotateY

Defined in

src/math/Matrix4.ts:478

rotateZ

▸ rotateZ(rad): ProjectionMatrix

围绕 Z 轴按给定弧度旋转矩阵

Parameters

Name	Type
`rad`	`any`

Returns

ProjectionMatrix

Inherited from

Matrix4.rotateZ

Defined in

src/math/Matrix4.ts:487

compose

▸ compose(v, q, s): ProjectionMatrix

从四元数旋转、平移和缩放创建矩阵

Parameters

Name	Type
`v`	`Vector3`
`q`	`Quaternion`
`s`	`Vector3`

Returns

ProjectionMatrix

Inherited from

Matrix4.compose

Defined in

src/math/Matrix4.ts:498

decompose

▸ decompose(): Object

从矩阵转换到四元数、平移和缩放向量

Returns

Object

Name	Type
`rotation`	`Quaternion`
`scale`	`Vector3`
`translation`	`Vector3`

Inherited from

Matrix4.decompose

Defined in

src/math/Matrix4.ts:506

copy

▸ copy(m): ProjectionMatrix

将传入的 Matrix4 复制到此矩阵

Parameters

Name	Type	Description
`m`	`Matrix4`	源矩阵

Returns

ProjectionMatrix

this

Inherited from

Defined in

src/math/Matrix4.ts:519

clone

▸ clone(): Matrix4

从此矩阵创建一个新的 4*4 矩阵

Returns

a new Matrix4

Inherited from

Defined in

src/math/Matrix4.ts:528

frustum

▸ frustum(mat4, left, right, top, bottom, near, far): ProjectionMatrix

一般用于生成相机的视椎体，用来做视椎剔除加速渲染

Parameters

Name	Type
`mat4`	`any`
`left`	`any`
`right`	`any`
`top`	`any`
`bottom`	`any`
`near`	`any`
`far`	`any`

Returns

ProjectionMatrix

Defined in

src/math/ProjectionMatrix.ts:17

orthographic

▸ orthographic(left, right, top, bottom, near, far): ProjectionMatrix

生成平面相机投影矩阵

Parameters

Name	Type
`left`	`any`
`right`	`any`
`top`	`any`
`bottom`	`any`
`near`	`any`
`far`	`any`

Returns

ProjectionMatrix

Defined in

src/math/ProjectionMatrix.ts:31

perspective

▸ perspective(fovy, aspect, near, far): ProjectionMatrix

生成透视相机投影矩阵

Parameters

Name	Type
`fovy`	`any`
`aspect`	`any`
`near`	`any`
`far`	`any`

Returns

ProjectionMatrix

Defined in

src/math/ProjectionMatrix.ts:43

lookAt

▸ lookAt(eye, target?, up?): ProjectionMatrix

设置物体的朝向

Parameters

Name	Type
`eye`	`any`
`target`	`Vector3`
`up`	`Vector3`

Returns

ProjectionMatrix

Defined in

src/math/ProjectionMatrix.ts:54

toString

▸ toString(): string

转换为字符串

Returns

string

Overrides

Matrix4.toString

Defined in

src/math/ProjectionMatrix.ts:62