Camera

Camera

new Camera

The camera is defined by a position, orientation, and view frustum.

The orientation forms an orthonormal basis with a view, up and right = view x up unit vectors.

The viewing frustum is defined by 6 planes. Each plane is represented by a {Cartesian4} object, where the x, y, and z components define the unit vector normal to the plane, and the w component is the distance of the plane from the origin/camera position.

Throws:

DeveloperError : canvas is required.

Example

// Create a camera looking down the negative z-axis, positioned at the origin,
// with a field of view of 60 degrees, and 1:1 aspect ratio.
var camera = new Camera(canvas);
camera.position = new Cartesian3();
camera.direction = Cartesian3.UNIT_Z.negate();
camera.up = Cartesian3.UNIT_Y;
camera.frustum.fovy = CesiumMath.PI_OVER_THREE;
camera.frustum.near = 1.0;
camera.frustum.far = 2.0;

Demo:

Cesium Sandcastle Camera Demo
Sandcastle Example from the Camera Tutorial

Source:

/Source/Scene/Camera.js

Members

controller :CameraController

Defines camera behavior. The controller can be used to perform common camera manipulations.

direction :Cartesian3

The view direction of the camera.

frustum :Frustum

The region of space in view.

See:

position :Cartesian3

The position of the camera.

right :Cartesian3

The right direction of the camera.

transform :Matrix4

Modifies the camera's reference frame. The inverse of this transformation is appended to the view matrix.

See:

Transforms

up :Cartesian3

The up direction of the camera.

Methods

cameraToWorldCoordinates

Transform a vector or point from the camera's reference frame to world coordinates.

Parameters:

Name	Type	Argument	Description
`vector`	Cartesian4		The vector or point to transform.
`result`	Cartesian4	<optional>	The object onto which to store the result.

Throws:

DeveloperError : cartesian is required.

Returns:

Cartesian4 The transformed vector or point.

Returns a duplicate of a Camera instance.

Returns:

Camera A new copy of the Camera instance.

getInverseTransform

DOC_TBA

Returns:

Matrix4 DOC_TBA

getInverseViewMatrix

DOC_TBA

getViewMatrix

Returns the view matrix.

Returns:

Matrix4 The view matrix.

See:

UniformState#getView
UniformState#setView
czm_view

worldToCameraCoordinates

Transform a vector or point from world coordinates to the camera's reference frame.

Parameters:

Name	Type	Argument	Description
`cartesian`	Cartesian4		The vector or point to transform.
`result`	Cartesian4	<optional>	The object onto which to store the result.

Throws:

DeveloperError : cartesian is required.

Returns:

Cartesian4 The transformed vector or point.

<static> prototype.getDirectionWC

The view direction of the camera in world coordinates.

<static> prototype.getPositionWC

The position of the camera in world coordinates.

<static> prototype.getRightWC

The right direction of the camera in world coordinates.

<static> prototype.getUpWC

The up direction of the camera in world coordinates.