All of the classes discussed here are located in the j3dui.control.mappers.intuitive
package. Table 19. 2 summarizes the basic classes and interfaces
that the framework provides for generalized intuitive coordinate mapping. Figure 19. 3
shows the relationship of the building blocks.
Table 19. 2 Classes and interfaces related to intuitive coordinate mapping
| Class/Interface | Description | Input Events | Output Events |
| IntutiveDragMapper | A coordinate mapper for input
drag to source drag conversion.
Uses a plug-in to per-form
a specific type of
coordinate mapping |
InputDragTarget | SourceDragTarget |
| IntuitiveDragMapperPlugin | The abstract base class for
intuitive drag mapper plug-ins
|
| |
| SourceDragTarget | Event interface for reporting
source drag gestures
|
| |
| SourceDragSplitter | Source drag event splitter | SourceDragTarget | SourceDragTarget
|
| SourceDragFilter | The source drag filter, which
uses a plug-in to perform a
specific filtering operation |
SourceDragTarget | SourceDragTarget |
| AbsoluteSourceDragPlugin | A source drag filter plug-in
that interprets the drag with
an absolute drag origin
|
| |
| RelativeSourceDragPlugin | A source drag filter plug-in
that interprets the drag with a
relative drag origin
|
| |
| SourceDragMapper | A coordinate mapper for
source drag to target drag to
actuation conversion. Uses a
plug-in to perform a specific
type of coordinate mapping
| SourceDragTarget | ActuationTarget |
| SourceDragMapperPlugin | The abstract base class for
source drag mapper plug-ins
|
| |
| DirectSourceDragPlugin | A source drag mapper plug-in
that performs source scale
and target offset, and that
maps source dimensions to
none, one, or more output
dimensions
| | |
| AxisAngleSourceDragPlugin | A source drag mapper plug-in
that maps a rotation about a
fixed source axis to a rotation
about the corresponding tar-get
axis
| |
|
In the following discussion of the framework's building blocks for intuitive map-ping,
you'll notice a number of similarities with earlier building blocks. This should
come as no surprise because many of the same operations still need to be performed,
such as input drag mapping, output actuation mapping, and drag filtering, only here
these operations involve 3D source space instead of 2D input space. Also, source and
target spaces are defined in terms of nodes living in those spaces. The building blocks
automatically configure such nodes for live access of their local-to-Vworld transforms,
and make extensive use of the framework's local-to-local spatial transform utilities— the
Mapper.toTargetSpace methods— to perform source-to-target spatial transforms.
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