Camera Class

Extends Component

Module: cc

Camera is usefull when making reel game or other games which need scroll screen. Using camera will be more efficient than moving node to scroll screen. Camera

Index

Properties
  • zoomRatio Number The camera zoom ratio, only support 2D camera.
  • fov Number Field of view.
  • orthoSize Number The viewport size of the Camera when set to orthographic projection.
  • nearClip Number The near clipping plane.
  • farClip Number The far clipping plane.
  • ortho Boolean Is the camera orthographic (true) or perspective (false)?
  • rect Rect Four values (0 ~ 1) that indicate where on the screen this camera view will be drawn.
  • cullingMask Number This is used to render parts of the scene selectively.
  • clearFlags Camera.ClearFlags Determining what to clear when camera rendering.
  • backgroundColor Color The color with which the screen will be cleared.
  • depth Number Camera's depth in the camera rendering order.
  • targetTexture RenderTexture Destination render texture.
  • renderStages Number Sets the camera's render stages.
  • alignWithScreen Boolean Whether auto align camera viewport to screen
  • main Camera The first enabled camera.
  • cameras [Camera] All enabled cameras.
  • __eventTargets Array Register all related EventTargets,...
  • node Node The node this component is attached to.
  • uuid String The uuid for editor.
  • _enabled Boolean
  • enabled Boolean indicates whether this component is enabled or not.
  • enabledInHierarchy Boolean indicates whether this component is enabled and its node is also active in the hierarchy.
  • _isOnLoadCalled Number Returns a value which used to indicate the onLoad get called or not.
  • _name String
  • _objFlags Number
  • name String The name of the object.
  • isValid Boolean Indicates whether the object is not yet destroyed.
Methods

Details

Properties

zoomRatio

The camera zoom ratio, only support 2D camera.

meta description
Type Number
Defined in cocos2d/core/camera/CCCamera.js:157
fov

Field of view. The width of the Camera’s view angle, measured in degrees along the local Y axis.

meta description
Type Number
Defined in cocos2d/core/camera/CCCamera.js:174
orthoSize

The viewport size of the Camera when set to orthographic projection.

meta description
Type Number
Defined in cocos2d/core/camera/CCCamera.js:192
nearClip

The near clipping plane.

meta description
Type Number
Defined in cocos2d/core/camera/CCCamera.js:210
farClip

The far clipping plane.

meta description
Type Number
Defined in cocos2d/core/camera/CCCamera.js:229
ortho

Is the camera orthographic (true) or perspective (false)?

meta description
Type Boolean
Defined in cocos2d/core/camera/CCCamera.js:248
rect

Four values (0 ~ 1) that indicate where on the screen this camera view will be drawn.

meta description
Type Rect
Defined in cocos2d/core/camera/CCCamera.js:267
cullingMask

This is used to render parts of the scene selectively.

meta description
Type Number
Defined in cocos2d/core/camera/CCCamera.js:286
clearFlags

Determining what to clear when camera rendering.

meta description
Type Camera.ClearFlags
Defined in cocos2d/core/camera/CCCamera.js:304
backgroundColor

The color with which the screen will be cleared.

meta description
Type Color
Defined in cocos2d/core/camera/CCCamera.js:324
depth

Camera's depth in the camera rendering order.

meta description
Type Number
Defined in cocos2d/core/camera/CCCamera.js:342
targetTexture

Destination render texture. Usually cameras render directly to screen, but for some effects it is useful to make a camera render into a texture.

meta description
Type RenderTexture
Defined in cocos2d/core/camera/CCCamera.js:362
renderStages

Sets the camera's render stages.

meta description
Type Number
Defined in cocos2d/core/camera/CCCamera.js:382
alignWithScreen

Whether auto align camera viewport to screen

meta description
Type Boolean
Defined in cocos2d/core/camera/CCCamera.js:400
main

The first enabled camera.

meta description
Type Camera
Defined in cocos2d/core/camera/CCCamera.js:422
cameras

All enabled cameras.

meta description
Type [Camera]
Defined in cocos2d/core/camera/CCCamera.js:432
__eventTargets

Register all related EventTargets, all event callbacks will be removed in _onPreDestroy

meta description
Type Array
Defined in cocos2d/core/components/CCComponent.js:61
node

The node this component is attached to. A component is always attached to a node.

meta description
Type Node
Defined in cocos2d/core/components/CCComponent.js:75
Examples
cc.log(comp.node);
uuid

The uuid for editor.

meta description
Type String
Defined in cocos2d/core/components/CCComponent.js:106
Examples
cc.log(comp.uuid);
_enabled
meta description
Type Boolean
Defined in cocos2d/core/components/CCComponent.js:147
enabled

indicates whether this component is enabled or not.

meta description
Type Boolean
Defined in cocos2d/core/components/CCComponent.js:154
Examples
comp.enabled = true;
cc.log(comp.enabled);
enabledInHierarchy

indicates whether this component is enabled and its node is also active in the hierarchy.

meta description
Type Boolean
Defined in cocos2d/core/components/CCComponent.js:186
Examples
cc.log(comp.enabledInHierarchy);
_isOnLoadCalled

Returns a value which used to indicate the onLoad get called or not.

meta description
Type Number
Defined in cocos2d/core/components/CCComponent.js:202
Examples
cc.log(this._isOnLoadCalled > 0);
_name
meta description
Type String
Defined in cocos2d/core/platform/CCObject.js:76
_objFlags
meta description
Type Number
Defined in cocos2d/core/platform/CCObject.js:83
name

The name of the object.

meta description
Type String
Defined in cocos2d/core/platform/CCObject.js:240
Examples
obj.name = "New Obj";
isValid

Indicates whether the object is not yet destroyed. (It will not be available after being destroyed)
When an object's destroy is called, it is actually destroyed after the end of this frame. So isValid will return false from the next frame, while isValid in the current frame will still be true. If you want to determine whether the current frame has called destroy, use cc.isValid(obj, true), but this is often caused by a particular logical requirements, which is not normally required.

meta description
Type Boolean
Defined in cocos2d/core/platform/CCObject.js:258
Examples
var node = new cc.Node();
cc.log(node.isValid);    // true
node.destroy();
cc.log(node.isValid);    // true, still valid in this frame
// after a frame...
cc.log(node.isValid);    // false, destroyed in the end of last frame

Methods

findCamera

Get the first camera which the node belong to.

meta description
Returns Camera
Defined in cocos2d/core/camera/CCCamera.js:444
Parameters
getScreenToWorldMatrix2D

Get the screen to world matrix, only support 2D camera which alignWithScreen is true.

meta description
Returns Mat4
Defined in cocos2d/core/camera/CCCamera.js:601
Parameters
  • out Mat4 the matrix to receive the result
getWorldToScreenMatrix2D

Get the world to camera matrix, only support 2D camera which alignWithScreen is true.

meta description
Returns Mat4
Defined in cocos2d/core/camera/CCCamera.js:616
Parameters
  • out Mat4 the matrix to receive the result
getScreenToWorldPoint

Convert point from screen to world.

meta description
Returns Vec3 | Vec2
Defined in cocos2d/core/camera/CCCamera.js:648
Parameters
getWorldToScreenPoint

Convert point from world to screen.

meta description
Returns Vec3 | Vec2
Defined in cocos2d/core/camera/CCCamera.js:671
Parameters
getRay

Get a ray from screen position

meta description
Returns Ray
Defined in cocos2d/core/camera/CCCamera.js:695
Parameters
containsNode

Check whether the node is in the camera.

meta description
Returns Boolean
Defined in cocos2d/core/camera/CCCamera.js:721
Parameters
  • node Node the node which need to check
render

Render the camera manually.

meta description
Defined in cocos2d/core/camera/CCCamera.js:734
Parameters
getNodeToCameraTransform

Returns the matrix that transform the node's (local) space coordinates into the camera's space coordinates.

meta description
Returns AffineTransform
Defined in cocos2d/core/camera/CCCamera.js:797
Deprecated since v2.0.0
Parameters
  • node Node the node which should transform
getCameraToWorldPoint

Conver a camera coordinates point to world coordinates.

meta description
Returns Vec2
Defined in cocos2d/core/camera/CCCamera.js:818
Deprecated since v2.1.3
Parameters
  • point Vec2 the point which should transform
  • out Vec2 the point to receive the result
getWorldToCameraPoint

Conver a world coordinates point to camera coordinates.

meta description
Returns Vec2
Defined in cocos2d/core/camera/CCCamera.js:833
Deprecated since v2.1.3
Parameters
  • point Vec2
  • out Vec2 the point to receive the result
getCameraToWorldMatrix

Get the camera to world matrix

meta description
Returns Mat4
Defined in cocos2d/core/camera/CCCamera.js:848
Deprecated since v2.1.3
Parameters
  • out Mat4 the matrix to receive the result
getWorldToCameraMatrix

Get the world to camera matrix

meta description
Returns Mat4
Defined in cocos2d/core/camera/CCCamera.js:863
Deprecated since v2.1.3
Parameters
  • out Mat4 the matrix to receive the result
update

Update is called every frame, if the Component is enabled.
This is a lifecycle method. It may not be implemented in the super class. You can only call its super class method inside it. It should not be called manually elsewhere.

meta description
Defined in cocos2d/core/components/CCComponent.js:223
Parameters
  • dt Number the delta time in seconds it took to complete the last frame
lateUpdate

LateUpdate is called every frame, if the Component is enabled.
This is a lifecycle method. It may not be implemented in the super class. You can only call its super class method inside it. It should not be called manually elsewhere.

meta description
Defined in cocos2d/core/components/CCComponent.js:234
__preload

__preload is called before every onLoad. It is used to initialize the builtin components internally, to avoid checking whether onLoad is called before every public method calls. This method should be removed if script priority is supported.

meta description
Defined in cocos2d/core/components/CCComponent.js:244
onLoad

When attaching to an active node or its node first activated. onLoad is always called before any start functions, this allows you to order initialization of scripts.
This is a lifecycle method. It may not be implemented in the super class. You can only call its super class method inside it. It should not be called manually elsewhere.

meta description
Defined in cocos2d/core/components/CCComponent.js:255
start

Called before all scripts' update if the Component is enabled the first time. Usually used to initialize some logic which need to be called after all components' onload methods called.
This is a lifecycle method. It may not be implemented in the super class. You can only call its super class method inside it. It should not be called manually elsewhere.

meta description
Defined in cocos2d/core/components/CCComponent.js:268
onEnable

Called when this component becomes enabled and its node is active.
This is a lifecycle method. It may not be implemented in the super class. You can only call its super class method inside it. It should not be called manually elsewhere.

meta description
Defined in cocos2d/core/components/CCComponent.js:281
onDisable

Called when this component becomes disabled or its node becomes inactive.
This is a lifecycle method. It may not be implemented in the super class. You can only call its super class method inside it. It should not be called manually elsewhere.

meta description
Defined in cocos2d/core/components/CCComponent.js:291
onDestroy

Called when this component will be destroyed.
This is a lifecycle method. It may not be implemented in the super class. You can only call its super class method inside it. It should not be called manually elsewhere.

meta description
Defined in cocos2d/core/components/CCComponent.js:301
onFocusInEditor
meta description
Defined in cocos2d/core/components/CCComponent.js:311
onLostFocusInEditor
meta description
Defined in cocos2d/core/components/CCComponent.js:316
resetInEditor

Called to initialize the component or node’s properties when adding the component the first time or when the Reset command is used. This function is only called in editor.

meta description
Defined in cocos2d/core/components/CCComponent.js:321
addComponent

Adds a component class to the node. You can also add component to node by passing in the name of the script.

meta description
Returns Component
Defined in cocos2d/core/components/CCComponent.js:331
Parameters
  • typeOrClassName Function | String the constructor or the class name of the component to add
Examples
var sprite = node.addComponent(cc.Sprite);
var test = node.addComponent("Test");
getComponent

Returns the component of supplied type if the node has one attached, null if it doesn't.
You can also get component in the node by passing in the name of the script.

meta description
Returns Component
Defined in cocos2d/core/components/CCComponent.js:349
Parameters
Examples
// get sprite component.
var sprite = node.getComponent(cc.Sprite);
// get custom test calss.
var test = node.getComponent("Test");
getComponents

Returns all components of supplied Type in the node.

meta description
Returns Component[]
Defined in cocos2d/core/components/CCComponent.js:373
Parameters
Examples
var sprites = node.getComponents(cc.Sprite);
var tests = node.getComponents("Test");
getComponentInChildren

Returns the component of supplied type in any of its children using depth first search.

meta description
Returns Component
Defined in cocos2d/core/components/CCComponent.js:391
Parameters
Examples
var sprite = node.getComponentInChildren(cc.Sprite);
var Test = node.getComponentInChildren("Test");
getComponentsInChildren

Returns the components of supplied type in self or any of its children using depth first search.

meta description
Returns Component[]
Defined in cocos2d/core/components/CCComponent.js:409
Parameters
Examples
var sprites = node.getComponentsInChildren(cc.Sprite);
var tests = node.getComponentsInChildren("Test");
_getLocalBounds

If the component's bounding box is different from the node's, you can implement this method to supply a custom axis aligned bounding box (AABB), so the editor's scene view can perform hit test properly.

meta description
Defined in cocos2d/core/components/CCComponent.js:429
Parameters
  • out_rect Rect the Rect to receive the bounding box
onRestore

onRestore is called after the user clicks the Reset item in the Inspector's context menu or performs an undo operation on this component.

If the component contains the "internal state", short for "temporary member variables which not included
in its CCClass properties", then you may need to implement this function.

The editor will call the getset accessors of your component to record/restore the component's state
for undo/redo operation. However, in extreme cases, it may not works well. Then you should implement
this function to manually synchronize your component's "internal states" with its public properties.
Once you implement this function, all the getset accessors of your component will not be called when
the user performs an undo/redo operation. Which means that only the properties with default value
will be recorded or restored by editor.

Similarly, the editor may failed to reset your component correctly in extreme cases. Then if you need
to support the reset menu, you should manually synchronize your component's "internal states" with its
properties in this function. Once you implement this function, all the getset accessors of your component
will not be called during reset operation. Which means that only the properties with default value
will be reset by editor.

This function is only called in editor mode.

meta description
Defined in cocos2d/core/components/CCComponent.js:442
schedule

Schedules a custom selector.
If the selector is already scheduled, then the interval parameter will be updated without scheduling it again.

meta description
Defined in cocos2d/core/components/CCComponent.js:536
Parameters
  • callback function The callback function
  • interval Number Tick interval in seconds. 0 means tick every frame.
  • repeat Number The selector will be executed (repeat + 1) times, you can use cc.macro.REPEAT_FOREVER for tick infinitely.
  • delay Number The amount of time that the first tick will wait before execution. Unit: s
Examples
var timeCallback = function (dt) {
  cc.log("time: " + dt);
}
this.schedule(timeCallback, 1);
scheduleOnce

Schedules a callback function that runs only once, with a delay of 0 or larger.

meta description
Defined in cocos2d/core/components/CCComponent.js:574
Parameters
  • callback function A function wrapped as a selector
  • delay Number The amount of time that the first tick will wait before execution. Unit: s
Examples
var timeCallback = function (dt) {
  cc.log("time: " + dt);
}
this.scheduleOnce(timeCallback, 2);
unschedule

Unschedules a custom callback function.

meta description
Defined in cocos2d/core/components/CCComponent.js:591
Parameters
  • callback_fn function A function wrapped as a selector
Examples
this.unschedule(_callback);
unscheduleAllCallbacks

unschedule all scheduled callback functions: custom callback functions, and the 'update' callback function.
Actions are not affected by this method.

meta description
Defined in cocos2d/core/components/CCComponent.js:607
Examples
this.unscheduleAllCallbacks();
destroy

Destroy this Object, and release all its own references to other objects.
Actual object destruction will delayed until before rendering. From the next frame, this object is not usable any more. You can use cc.isValid(obj) to check whether the object is destroyed before accessing it.

meta description
Returns Boolean
Defined in cocos2d/core/platform/CCObject.js:293
Examples
obj.destroy();
_destruct

Clear all references in the instance.

NOTE: this method will not clear the getter or setter functions which defined in the instance of CCObject. You can override the _destruct method if you need, for example: _destruct: function () { for (var key in this) { if (this.hasOwnProperty(key)) { switch (typeof this[key]) { case 'string': this[key] = ''; break; case 'object': case 'function': this[key] = null; break; } } }

meta description
Defined in cocos2d/core/platform/CCObject.js:427
_onPreDestroy

Called before the object being destroyed.

meta description
Defined in cocos2d/core/platform/CCObject.js:460
_serialize

The customized serialization for this object. (Editor Only)

meta description
Returns object
Defined in cocos2d/core/platform/CCObject.js:485
Parameters
_deserialize

Init this object from the custom serialized data.

meta description
Defined in cocos2d/core/platform/CCObject.js:495
Parameters
  • data Object the serialized json data
  • ctx _Deserializer

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