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.
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 Cesium.Camera(scene);
camera.position = new Cesium.Cartesian3();
camera.direction = Cesium.Cartesian3.negate(Cesium.Cartesian3.UNIT_Z, new Cesium.Cartesian3());
camera.up = Cesium.Cartesian3.clone(Cesium.Cartesian3.UNIT_Y);
camera.frustum.fov = Cesium.Math.PI_OVER_THREE;
camera.frustum.near = 1.0;
camera.frustum.far = 2.0;
Demo:
Source: Scene/Camera.js, line 76

Members

staticCamera.DEFAULT_VIEW_FACTOR :Number

A scalar to multiply to the camera position and add it back after setting the camera to view the rectangle. A value of zero means the camera will view the entire Camera#DEFAULT_VIEW_RECTANGLE, a value greater than zero will move it further away from the extent, and a value less than zero will move it close to the extent.
Source: Scene/Camera.js, line 244

staticCamera.DEFAULT_VIEW_RECTANGLE :Rectangle

The default extent the camera will view on creation.
Source: Scene/Camera.js, line 236

constrainedAxis :Cartesian3

If set, the camera will not be able to rotate past this axis in either direction.
Default Value: undefined
Source: Scene/Camera.js, line 182

defaultLookAmount :Number

The default amount to rotate the camera when an argument is not provided to the look methods.
Default Value: Math.PI / 60.0
Source: Scene/Camera.js, line 162

defaultMoveAmount :Number

The default amount to move the camera when an argument is not provided to the move methods.
Default Value: 100000.0;
Source: Scene/Camera.js, line 155

defaultRotateAmount :Number

The default amount to rotate the camera when an argument is not provided to the rotate methods.
Default Value: Math.PI / 3600.0
Source: Scene/Camera.js, line 169

defaultZoomAmount :Number

The default amount to move the camera when an argument is not provided to the zoom methods.
Default Value: 100000.0;
Source: Scene/Camera.js, line 176

direction :Cartesian3

The view direction of the camera.
Source: Scene/Camera.js, line 113

readonlydirectionWC :Cartesian3

Gets the view direction of the camera in world coordinates.
Source: Scene/Camera.js, line 642

frustum :Frustum

The region of space in view.
Default Value: PerspectiveFrustum()
See:
Source: Scene/Camera.js, line 145

heading :Number

Gets or sets the camera heading in radians.
Source: Scene/Camera.js, line 683

readonlyinverseTransform :Matrix4

Gets the inverse camera transform.
Default Value: Matrix4.IDENTITY
Source: Scene/Camera.js, line 566

readonlyinverseViewMatrix :Matrix4

Gets the inverse view matrix.
See:
Source: Scene/Camera.js, line 598

maximumTranslateFactor :Number

The factor multiplied by the the map size used to determine where to clamp the camera position when translating across the surface. The default is 1.5. Only valid for 2D and Columbus view.
Default Value: 1.5
Source: Scene/Camera.js, line 189

maximumZoomFactor :Number

The factor multiplied by the the map size used to determine where to clamp the camera position when zooming out from the surface. The default is 2.5. Only valid for 2D.
Default Value: 2.5
Source: Scene/Camera.js, line 196

position :Cartesian3

The position of the camera.
Source: Scene/Camera.js, line 103

positionCartographic :Cartographic

Gets the Cartographic position of the camera, with longitude and latitude expressed in radians and height in meters. In 2D and Columbus View, it is possible for the returned longitude and latitude to be outside the range of valid longitudes and latitudes when the camera is outside the map.
Source: Scene/Camera.js, line 614

readonlypositionWC :Cartesian3

Gets the position of the camera in world coordinates.
Source: Scene/Camera.js, line 628
The right direction of the camera.
Source: Scene/Camera.js, line 131

readonlyrightWC :Cartesian3

Gets the right direction of the camera in world coordinates.
Source: Scene/Camera.js, line 670

tilt :Number

Gets or sets the camera tilt in radians
Source: Scene/Camera.js, line 716

transform :Matrix4

Modifies the camera's reference frame. The inverse of this transformation is appended to the view matrix.
Default Value: Matrix4.IDENTITY
See:
Source: Scene/Camera.js, line 92

up :Cartesian3

The up direction of the camera.
Source: Scene/Camera.js, line 122

readonlyupWC :Cartesian3

Gets the up direction of the camera in world coordinates.
Source: Scene/Camera.js, line 656

readonlyviewMatrix :Matrix4

Gets the view matrix.
See:
Source: Scene/Camera.js, line 582

Methods

cameraToWorldCoordinates(cartesian, result) → Cartesian4

Transform a vector or point from the camera's reference frame to world coordinates.
Name Type Description
cartesian Cartesian4 The vector or point to transform.
result Cartesian4 optional The object onto which to store the result.
Returns:
The transformed vector or point.
Source: Scene/Camera.js, line 875

cameraToWorldCoordinatesPoint(cartesian, result) → Cartesian3

Transform a point from the camera's reference frame to world coordinates.
Name Type Description
cartesian Cartesian3 The point to transform.
result Cartesian3 optional The object onto which to store the result.
Returns:
The transformed point.
Source: Scene/Camera.js, line 896

cameraToWorldCoordinatesVector(cartesian, result) → Cartesian3

Transform a vector from the camera's reference frame to world coordinates.
Name Type Description
cartesian Cartesian3 The vector to transform.
result Cartesian3 optional The object onto which to store the result.
Returns:
The transformed vector.
Source: Scene/Camera.js, line 917

clone() → Camera

Returns a duplicate of a Camera instance.
Returns:
A new copy of the Camera instance.
Source: Scene/Camera.js, line 2076

flyTo(options)

Flies the camera from its current position to a new position.
Name Type Description
options Object Object with the following properties:
Name Type Default Description
destination Cartesian3 The final position of the camera in WGS84 (world) coordinates.
direction Cartesian3 optional The final direction of the camera in WGS84 (world) coordinates. By default, the direction will point towards the center of the frame in 3D and in the negative z direction in Columbus view or 2D.
up Cartesian3 optional The final up direction in WGS84 (world) coordinates. By default, the up direction will point towards local north in 3D and in the positive y direction in Columbus view or 2D.
duration Number 3.0 optional The duration of the flight in seconds.
complete Camera~FlightCompleteCallback optional The function to execute when the flight is complete.
cancel Camera~FlightCancelledCallback optional The function to execute if the flight is cancelled.
endTransform Matrix4 optional Transform matrix representing the reference frame the camera will be in when the flight is completed.
convert Boolean true optional When true, the destination is converted to the correct coordinate system for each scene mode. When false, the destination is expected to be in the correct coordinate system.
Throws:
  • DeveloperError : If either direction or up is given, then both are required.
Source: Scene/Camera.js, line 2051

flyToRectangle(options, endTransform)

Flies the camera from its current position to a position where the entire rectangle is visible.
Name Type Description
options Object Object with the following properties:
Name Type Default Description
destination Rectangle The rectangle to view, in WGS84 (world) coordinates, which determines the final position of the camera.
duration Number 3.0 optional The duration of the flight in seconds.
complete Camera~FlightCompleteCallback optional The function to execute when the flight is complete.
cancel Camera~FlightCancelledCallback optional The function to execute if the flight is cancelled.
endTransform Matrix4 optional Transform matrix representing the reference frame the camera will be in when the flight is completed.
Source: Scene/Camera.js, line 2066

getMagnitude() → Number

Gets the magnitude of the camera position. In 3D, this is the vector magnitude. In 2D and Columbus view, this is the distance to the map.
Returns:
The magnitude of the position.
Source: Scene/Camera.js, line 1363

getPickRay(windowPosition, result) → Object

Create a ray from the camera position through the pixel at windowPosition in world coordinates.
Name Type Description
windowPosition Cartesian2 The x and y coordinates of a pixel.
result Ray optional The object onto which to store the result.
Returns:
Returns the Cartesian3 position and direction of the ray.
Source: Scene/Camera.js, line 1861

getRectangleCameraCoordinates(rectangle, result) → Cartesian3

Get the camera position needed to view an rectangle on an ellipsoid or map
Name Type Description
rectangle Rectangle The rectangle to view.
result Cartesian3 optional The camera position needed to view the rectangle
Returns:
The camera position needed to view the rectangle
Source: Scene/Camera.js, line 1678

look(axis, angle)

Rotate each of the camera's orientation vectors around axis by angle
Name Type Description
axis Cartesian3 The axis to rotate around.
angle Number optional The angle, in radians, to rotate by. Defaults to defaultLookAmount.
See:
Source: Scene/Camera.js, line 1119

lookAt(eye, target, up)

Sets the camera position and orientation with an eye position, target, and up vector. This method is not supported in 2D mode because there is only one direction to look.
Name Type Description
eye Cartesian3 The position of the camera.
target Cartesian3 The position to look at.
up Cartesian3 The up vector.
Throws:
Source: Scene/Camera.js, line 1443

lookDown(amount)

Rotates the camera around its right vector by amount, in radians, in the opposite direction of its up vector.
Name Type Description
amount Number optional The amount, in radians, to rotate by. Defaults to defaultLookAmount.
See:
Source: Scene/Camera.js, line 1101

lookLeft(amount)

Rotates the camera around its up vector by amount, in radians, in the opposite direction of its right vector.
Name Type Description
amount Number optional The amount, in radians, to rotate by. Defaults to defaultLookAmount.
See:
Source: Scene/Camera.js, line 1062

lookRight(amount)

Rotates the camera around its up vector by amount, in radians, in the direction of its right vector.
Name Type Description
amount Number optional The amount, in radians, to rotate by. Defaults to defaultLookAmount.
See:
Source: Scene/Camera.js, line 1075

lookUp(amount)

Rotates the camera around its right vector by amount, in radians, in the direction of its up vector.
Name Type Description
amount Number optional The amount, in radians, to rotate by. Defaults to defaultLookAmount.
See:
Source: Scene/Camera.js, line 1088

move(direction, amount)

Translates the camera's position by amount along direction.
Name Type Description
direction Cartesian3 The direction to move.
amount Number optional The amount, in meters, to move. Defaults to defaultMoveAmount.
See:
Source: Scene/Camera.js, line 963

moveBackward(amount)

Translates the camera's position by amount along the opposite direction of the camera's view vector.
Name Type Description
amount Number optional The amount, in meters, to move. Defaults to defaultMoveAmount.
See:
Source: Scene/Camera.js, line 999

moveDown(amount)

Translates the camera's position by amount along the opposite direction of the camera's up vector.
Name Type Description
amount Number optional The amount, in meters, to move. Defaults to defaultMoveAmount.
See:
Source: Scene/Camera.js, line 1024

moveForward(amount)

Translates the camera's position by amount along the camera's view vector.
Name Type Description
amount Number optional The amount, in meters, to move. Defaults to defaultMoveAmount.
See:
Source: Scene/Camera.js, line 986

moveLeft(amount)

Translates the camera's position by amount along the opposite direction of the camera's right vector.
Name Type Description
amount Number optional The amount, in meters, to move. Defaults to defaultMoveAmount.
See:
Source: Scene/Camera.js, line 1049

moveRight(amount)

Translates the camera's position by amount along the camera's right vector.
Name Type Description
amount Number optional The amount, in meters, to move. Defaults to defaultMoveAmount.
See:
Source: Scene/Camera.js, line 1036

moveUp(amount)

Translates the camera's position by amount along the camera's up vector.
Name Type Description
amount Number optional The amount, in meters, to move. Defaults to defaultMoveAmount.
See:
Source: Scene/Camera.js, line 1011

pickEllipsoid(windowPosition, ellipsoid, result) → Cartesian3

Pick an ellipsoid or map.
Name Type Default Description
windowPosition Cartesian2 The x and y coordinates of a pixel.
ellipsoid Ellipsoid Ellipsoid.WGS84 optional The ellipsoid to pick.
result Cartesian3 optional The object onto which to store the result.
Returns:
If the ellipsoid or map was picked, returns the point on the surface of the ellipsoid or map in world coordinates. If the ellipsoid or map was not picked, returns undefined.
Source: Scene/Camera.js, line 1772

rotate(axis, angle)

Rotates the camera around axis by angle. The distance of the camera's position to the center of the camera's reference frame remains the same.
Name Type Description
axis Cartesian3 The axis to rotate around given in world coordinates.
angle Number optional The angle, in radians, to rotate by. Defaults to defaultRotateAmount.
See:
Source: Scene/Camera.js, line 1177

rotateDown(angle)

Rotates the camera around the center of the camera's reference frame by angle downwards.
Name Type Description
angle Number optional The angle, in radians, to rotate by. Defaults to defaultRotateAmount.
See:
Source: Scene/Camera.js, line 1202

rotateLeft(angle)

Rotates the camera around the center of the camera's reference frame by angle to the left.
Name Type Description
angle Number optional The angle, in radians, to rotate by. Defaults to defaultRotateAmount.
See:
Source: Scene/Camera.js, line 1276

rotateRight(angle)

Rotates the camera around the center of the camera's reference frame by angle to the right.
Name Type Description
angle Number optional The angle, in radians, to rotate by. Defaults to defaultRotateAmount.
See:
Source: Scene/Camera.js, line 1263

rotateUp(angle)

Rotates the camera around the center of the camera's reference frame by angle upwards.
Name Type Description
angle Number optional The angle, in radians, to rotate by. Defaults to defaultRotateAmount.
See:
Source: Scene/Camera.js, line 1215

setPositionCartographic(cartographic)

Moves the camera to the provided cartographic position.
Name Type Description
cartographic Cartographic The new camera position.
Source: Scene/Camera.js, line 1417

setTransform(transform)

Sets the camera's transform without changing the current view.
Name Type Description
transform Matrix4 The camera transform.
Source: Scene/Camera.js, line 790

twistLeft(amount)

Rotate the camera counter-clockwise around its direction vector by amount, in radians.
Name Type Description
amount Number optional The amount, in radians, to rotate by. Defaults to defaultLookAmount.
See:
Source: Scene/Camera.js, line 1146

twistRight(amount)

Rotate the camera clockwise around its direction vector by amount, in radians.
Name Type Description
amount Number optional The amount, in radians, to rotate by. Defaults to defaultLookAmount.
See:
Source: Scene/Camera.js, line 1158

viewRectangle(rectangle, ellipsoid)

View an rectangle on an ellipsoid or map.
Name Type Default Description
rectangle Rectangle The rectangle to view.
ellipsoid Ellipsoid Ellipsoid.WGS84 optional The ellipsoid to view.
Source: Scene/Camera.js, line 1702

worldToCameraCoordinates(cartesian, result) → Cartesian4

Transform a vector or point from world coordinates to the camera's reference frame.
Name Type Description
cartesian Cartesian4 The vector or point to transform.
result Cartesian4 optional The object onto which to store the result.
Returns:
The transformed vector or point.
Source: Scene/Camera.js, line 812

worldToCameraCoordinatesPoint(cartesian, result) → Cartesian3

Transform a point from world coordinates to the camera's reference frame.
Name Type Description
cartesian Cartesian3 The point to transform.
result Cartesian3 optional The object onto which to store the result.
Returns:
The transformed point.
Source: Scene/Camera.js, line 833

worldToCameraCoordinatesVector(cartesian, result) → Cartesian3

Transform a vector from world coordinates to the camera's reference frame.
Name Type Description
cartesian Cartesian3 The vector to transform.
result Cartesian3 optional The object onto which to store the result.
Returns:
The transformed vector.
Source: Scene/Camera.js, line 854

zoomIn(amount)

Zooms amount along the camera's view vector.
Name Type Description
amount Number optional The amount to move. Defaults to defaultZoomAmount.
See:
Source: Scene/Camera.js, line 1331

zoomOut(amount)

Zooms amount along the opposite direction of the camera's view vector.
Name Type Description
amount Number optional The amount to move. Defaults to defaultZoomAmount.
See:
Source: Scene/Camera.js, line 1348

Type Definitions

FlightCancelledCallback()

A function that will execute when a flight is cancelled.
Source: Scene/Camera.js, line 2092

FlightCompleteCallback()

A function that will execute when a flight completes.
Source: Scene/Camera.js, line 2087