Package com.sun.j3d.utils.universe
Class MultiTransformGroup
java.lang.Object
com.sun.j3d.utils.universe.MultiTransformGroup
A convenience class that effectively creates a series of TransformGroup
nodes connected one to another hierarchically. For most applications,
creating a MultiTransformGroup containing one transform will suffice.
More sophisticated applications that use a complex portal/head tracking
viewing system may find that more transforms are needed.
When more than one transform is needed, transform[0] is considered the "top most" transform with repsect to the scene graph, (attached to the ViewingPlatform node) and transform[numTransforms - 1] is the "bottom most" transform (the ViewPlatorm object is attached to this transform).
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Constructor Summary
ConstructorsConstructorDescriptionCreates a MultiTransformGroup node that contains a single transform.MultiTransformGroup
(int numTransforms) Creates a MultiTransformGroup node that contains the specified number of transforms. -
Method Summary
Modifier and TypeMethodDescriptionint
Returns the number of transforms in this MultiTransformGroup object.getTransformGroup
(int transform) Returns the selected TransformGroup node.
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Constructor Details
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MultiTransformGroup
public MultiTransformGroup()Creates a MultiTransformGroup node that contains a single transform. This is effectively equivalent to creating a single TransformGroup node. -
MultiTransformGroup
public MultiTransformGroup(int numTransforms) Creates a MultiTransformGroup node that contains the specified number of transforms.When more than one transform is needed, transform[0] is considered the "top most" transform with repsect to the scene graph, (attached to the ViewingPlatform node) and transform[numTransforms - 1] is the "bottom most" transform (the ViewPlatorm object is attached to this transform).
- Parameters:
numTransforms
- The number of transforms for this node to contain. If this number is less than one, one is assumed.
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Method Details
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getTransformGroup
Returns the selected TransformGroup node.- Parameters:
transform
- The index of the transform to return. The indices are in the range [0..(n - 1)] - where n was the number of transforms created. transform[0] is considered the "top most" transform with repsect to the scene graph, (attached to the ViewingPlatform node) and transform[numTransforms - 1] is the "bottom most" transform (the ViewPlatorm object is attached to this transform).- Returns:
- The TransformGroup node at the designated index. If an out of range index is given, null is returned.
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getNumTransforms
public int getNumTransforms()Returns the number of transforms in this MultiTransformGroup object.- Returns:
- The number of transforms in this object.
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