UWAL / Camera3D

Classes

abstract Camera3D

Base class for orthographic and perspective cameras.

Extends

• Node

Extended by

• OrthographicCamera
• PerspectiveCamera

Properties

CullTest

CullTest: 0 | 1 | 2 = 1;

Defaults to bounding sphere.

AutoUpdateWorldMatrix

AutoUpdateWorldMatrix: boolean = false;

Update the camera's view projection matrix every time the world matrix is updated.

Constructors

Constructor

new Camera3D(
   near?, 
   far?, 
   label?): Camera3D;

Parameters

Parameter	Type	Default value	Description
near?	number	1	Distance to the near plane.
far?	number	1e3	Distance to the far plane.
label?	string	undefined	Camera name.

Returns

Camera3D

Overrides

Node.constructor

Methods

UpdateWorldMatrix()

UpdateWorldMatrix(force?): void;

Update the camera's world matrix buffer. When the AutoUpdateWorldMatrix or force is true, the camera's world and view projection matrices are also updated.

Parameters

Parameter	Type	Default value	Description
force?	boolean	false	Force the camera's matrices to be updated.

Returns

void

Overrides

Node.UpdateWorldMatrix

UpdateProjectionMatrix()

UpdateProjectionMatrix(): void;

Write the computed projection matrix into the corresponding uniform buffer if present.

Returns

void

UpdateViewProjectionMatrix()

UpdateViewProjectionMatrix(updateWorldMatrix?): Float32Array<ArrayBufferLike>;

Compute the view-projection matrix and write the result into the corresponding uniform buffer if present. This method also updates the camera's frustum planes used in cull testing.

Parameters

Parameter	Type	Default value	Description
updateWorldMatrix?	boolean	true	Update the camera's world matrix.

Returns

Float32Array<ArrayBufferLike>

GetInverseViewProjectionMatrix()

GetInverseViewProjectionMatrix(translation?, dst?): Float32Array<ArrayBufferLike>;

Compute the inverse of the camera's view-projection matrix. Optionally, reset the translation component of the matrix before inverting it.

Parameters

Parameter	Type	Description
translation?	Float32Array<ArrayBufferLike>	If passed, set the matrix translation to this vector.
dst?	Float32Array<ArrayBufferLike>	Destination matrix. A new one is created if omitted.

Returns

Float32Array<ArrayBufferLike>

See

SkyBox lesson for reference.

LookAt()

LookAt(target, up?): void;

Rotate the camera to point at the specified point in 3D space.

Parameters

Parameter	Type	Description
target	Float32Array<ArrayBufferLike>	Point in 3D space to look at.
up?	Float32Array<ArrayBufferLike>	Camera's up vector. Defaults to [0, 1, 0].

Returns

void

SetRenderPipeline()

SetRenderPipeline(Pipeline): GPUBuffer;

Create and update an internal uniform buffer of this camera's world, projection, and view-projection matrices.

Parameters

Parameter	Type	Description
Pipeline	RenderPipelineInstance	Pipeline using this camera's projection.

Returns

GPUBuffer

Contains()

Contains(Mesh): boolean;

Check if a mesh is contained in the camera's frustum when cull testing is performed. This method is called internally on every render when cull testing is enabled.

Parameters

Parameter	Type	Description
Mesh	Mesh	3D mesh to test for culling.

Returns

boolean

Whether the mesh is in the camera's frustum.

Destroy()

Destroy(): void;

Destroy the internal matrices buffer.

Returns

void

Accessors

ViewProjectionMatrix

Get Signature

get ViewProjectionMatrix(): Float32Array<ArrayBufferLike>;

Returns

Float32Array<ArrayBufferLike>

Camera's view projection matrix.

MatrixBuffer

Get Signature

get MatrixBuffer(): GPUBuffer | undefined;

Returns

GPUBuffer | undefined

Matrix buffer created by the SetRenderPipeline method.

Near

Get Signature

get Near(): number;

Returns

number

Distance to the near plane of the frustum.

Set Signature

set Near(near): void;

Parameters

Parameter	Type	Description
near	number	Distance to the near plane.

Returns

void

Far

Get Signature

get Far(): number;

Returns

number

Distance to the far plane of the frustum.

Set Signature

set Far(far): void;

Parameters

Parameter	Type	Description
far	number	Distance to the far plane.

Returns

void