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| 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.
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Creates a new camera, with empty transformations.
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Computes the matrix corresponding to the current transformation
and applies it to the specified Canvas.
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Gets the x location of the camera.
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Gets the y location of the camera.
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Gets the z location of the camera.
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Computes the matrix corresponding to the current transformation
and copies it to the supplied matrix object.
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Restores the saved state, if any.
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Applies a rotation transform around all three axis.
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Applies a rotation transform around the X axis.
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Applies a rotation transform around the Y axis.
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Applies a rotation transform around the Z axis.
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Saves the camera state.
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Sets the location of the camera.
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Applies a translation transform on all three axis.
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| Protected Methods | |||||||||||
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Invoked when the garbage collector has detected that this instance is no longer reachable.
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Inherited Methods | |||||||||||
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From class
java.lang.Object
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Computes the matrix corresponding to the current transformation and applies it to the specified Canvas.
| canvas | The Canvas to set the transform matrix onto |
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Computes the matrix corresponding to the current transformation and copies it to the supplied matrix object.
| matrix | The matrix to copy the current transforms into |
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Applies a rotation transform around all three axis.
| x | The angle of rotation around the X axis, in degrees |
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| y | The angle of rotation around the Y axis, in degrees |
| z | The angle of rotation around the Z axis, in degrees |
Applies a rotation transform around the X axis.
| deg | The angle of rotation around the X axis, in degrees |
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Applies a rotation transform around the Y axis.
| deg | The angle of rotation around the Y axis, in degrees |
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Applies a rotation transform around the Z axis.
| deg | The angle of rotation around the Z axis, in degrees |
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Sets the location of the camera. The default location is set at 0, 0, -8.
| x | The x location of the camera |
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| y | The y location of the camera |
| z | The z location of the camera |
Applies a translation transform on all three axis.
| x | The distance to translate by on the X axis |
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| y | The distance to translate by on the Y axis |
| z | The distance to translate by on the Z axis |
Invoked when the garbage collector has detected that this instance is no longer reachable. The default implementation does nothing, but this method can be overridden to free resources.
Note that objects that override finalize are significantly more expensive than
objects that don't. Finalizers may be run a long time after the object is no longer
reachable, depending on memory pressure, so it's a bad idea to rely on them for cleanup.
Note also that finalizers are run on a single VM-wide finalizer thread,
so doing blocking work in a finalizer is a bad idea. A finalizer is usually only necessary
for a class that has a native peer and needs to call a native method to destroy that peer.
Even then, it's better to provide an explicit close method (and implement
Closeable), and insist that callers manually dispose of instances. This
works well for something like files, but less well for something like a BigInteger
where typical calling code would have to deal with lots of temporaries. Unfortunately,
code that creates lots of temporaries is the worst kind of code from the point of view of
the single finalizer thread.
If you must use finalizers, consider at least providing your own
ReferenceQueue and having your own thread process that queue.
Unlike constructors, finalizers are not automatically chained. You are responsible for
calling super.finalize() yourself.
Uncaught exceptions thrown by finalizers are ignored and do not terminate the finalizer thread. See Effective Java Item 7, "Avoid finalizers" for more.
| Throwable |
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