public class Camera
extends Object
java.lang.Object  
↳  android.graphics.Camera 
A camera instance can be used to compute 3D transformations and generate a matrix that can be applied, for instance, on a Canvas
.
Public constructors 


Camera() Creates a new camera, with empty transformations. 
Public methods 


void 
applyToCanvas(Canvas canvas) Computes the matrix corresponding to the current transformation and applies it to the specified Canvas. 
float 
dotWithNormal(float dx, float dy, float dz) 
float 
getLocationX() Gets the x location of the camera. 
float 
getLocationY() Gets the y location of the camera. 
float 
getLocationZ() Gets the z location of the camera. 
void 
getMatrix(Matrix matrix) Computes the matrix corresponding to the current transformation and copies it to the supplied matrix object. 
void 
restore() Restores the saved state, if any. 
void 
rotate(float x, float y, float z) Applies a rotation transform around all three axis. 
void 
rotateX(float deg) Applies a rotation transform around the X axis. 
void 
rotateY(float deg) Applies a rotation transform around the Y axis. 
void 
rotateZ(float deg) Applies a rotation transform around the Z axis. 
void 
save() Saves the camera state. 
void 
setLocation(float x, float y, float z) Sets the location of the camera. 
void 
translate(float x, float y, float z) Applies a translation transform on all three axis. 
Protected methods 


void 
finalize() Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. 
Inherited methods 


From class java.lang.Object

void applyToCanvas (Canvas canvas)
Computes the matrix corresponding to the current transformation and applies it to the specified Canvas.
Parameters  

canvas 
Canvas : The Canvas to set the transform matrix onto 
float dotWithNormal (float dx, float dy, float dz)
Parameters  

dx 
float

dy 
float

dz 
float

Returns  

float 
float getLocationX ()
Gets the x location of the camera.
Returns  

float 
See also:
float getLocationY ()
Gets the y location of the camera.
Returns  

float 
See also:
float getLocationZ ()
Gets the z location of the camera.
Returns  

float 
See also:
void getMatrix (Matrix matrix)
Computes the matrix corresponding to the current transformation and copies it to the supplied matrix object.
Parameters  

matrix 
Matrix : The matrix to copy the current transforms into 
void rotate (float x, float y, float z)
Applies a rotation transform around all three axis.
Parameters  

x 
float : The angle of rotation around the X axis, in degrees 
y 
float : The angle of rotation around the Y axis, in degrees 
z 
float : The angle of rotation around the Z axis, in degrees 
See also:
void rotateX (float deg)
Applies a rotation transform around the X axis.
Parameters  

deg 
float : The angle of rotation around the X axis, in degrees 
void rotateY (float deg)
Applies a rotation transform around the Y axis.
Parameters  

deg 
float : The angle of rotation around the Y axis, in degrees 
void rotateZ (float deg)
Applies a rotation transform around the Z axis.
Parameters  

deg 
float : The angle of rotation around the Z axis, in degrees 
void save ()
Saves the camera state. Each save should be balanced with a call to restore()
.
See also:
void setLocation (float x, float y, float z)
Sets the location of the camera. The default location is set at 0, 0, 8.
Parameters  

x 
float : The x location of the camera 
y 
float : The y location of the camera 
z 
float : The z location of the camera 
void translate (float x, float y, float z)
Applies a translation transform on all three axis.
Parameters  

x 
float : The distance to translate by on the X axis 
y 
float : The distance to translate by on the Y axis 
z 
float : The distance to translate by on the Z axis 
void finalize ()
Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. A subclass overrides the finalize
method to dispose of system resources or to perform other cleanup.
The general contract of finalize
is that it is invoked if and when the Java^{TM} virtual machine has determined that there is no longer any means by which this object can be accessed by any thread that has not yet died, except as a result of an action taken by the finalization of some other object or class which is ready to be finalized. The finalize
method may take any action, including making this object available again to other threads; the usual purpose of finalize
, however, is to perform cleanup actions before the object is irrevocably discarded. For example, the finalize method for an object that represents an input/output connection might perform explicit I/O transactions to break the connection before the object is permanently discarded.
The finalize
method of class Object
performs no special action; it simply returns normally. Subclasses of Object
may override this definition.
The Java programming language does not guarantee which thread will invoke the finalize
method for any given object. It is guaranteed, however, that the thread that invokes finalize will not be holding any uservisible synchronization locks when finalize is invoked. If an uncaught exception is thrown by the finalize method, the exception is ignored and finalization of that object terminates.
After the finalize
method has been invoked for an object, no further action is taken until the Java virtual machine has again determined that there is no longer any means by which this object can be accessed by any thread that has not yet died, including possible actions by other objects or classes which are ready to be finalized, at which point the object may be discarded.
The finalize
method is never invoked more than once by a Java virtual machine for any given object.
Any exception thrown by the finalize
method causes the finalization of this object to be halted, but is otherwise ignored.
Throws  

Throwable 