This is a switch that is connected to the 7 standard Datamaps so that by altering the switch value the selected Datamap becomes the output.
| Name | Type | Description | |
| index | int | This connects to a UI widget that supplies an integer value 0-6, the value alters which Datamap is output from the macro | |
| min | float | The the minimum data value of the field to be rendered. | |
| max | float | The the maximum data value of the field to be rendered. | |
Reducing the object count of an application is the thing most likely to speed up the loading and running of an application. This is one of a library of utility macros designed to reduce the object count.
These are all AVS/Express macros which as such require no compilation. Most applications are produced with AVS/Express Developers Edition and these macros also require AVS/Express Developers Edition. They contain no UI so that the developer has as much freedom as possible.
This switch can be connected into any DataObject so that the user can the select the Datamap to be used on a specific field.
A DataObject has a high object count and this can be used with a DataObject to reduce the object count, either directly or by allowing the use of a ViewersLite macro.
index
The index value given selects the Datamap for output:
0 is Default
1 is GreyScale
2 is VolumeRender
3 is HotMetal
4 is CyanYellowRed
5 is DefaultStep
6 is FilterDatamap
min
The minimum value of the field to be rendered.
max
The maximum value of the field to be rendered.
Datamap
A Datamap that can be connected to a DataObject and colormap that field.
This macro can be connected into the AVS/Express standard macros DataObject, DataObjectNoTexture and DataObjectLite.
An example application EgViewLite is provided, which shows how this switch can be connected into a DataObject to produce a rederable object with a Datamap that the user can select.
This example also demonstrates the use of DataObjects altered to have a set Datamap and how ViewersLite can be used.
iac_proj/viewlite/vl_macs.v contains the Datamap_Switch macro discussed here as well as all the DataObject macros (eg DO_GreyScale), DO_Dmap_Switch, DO_NT_Dmap_Switch, DO_LITE_Dmap_Switch, View3DMinimal, View3D_TrackObj, View3D_TrackAll3, View2DMinimal, View2D_TrackObj, View2D_TrackAll3, ViewMinimal, View_TrackObj, View_TrackAll3 and an example EgViewLite.
The macros can be acessed through the IAC_PROJ library in the Templates library or through one of four libraries DataObjects_apps, Views3DLite, Views2DLite and UViewsLite all of which are in the Misc sub-library IAC library area.
The example EgViewLite can also be acessed through the IAC library but is located in the Examples sub-library.
J Leng Manchester Visualization Centre
Paul G. Lever
International AVS Centre Manchester Visualization Centre Manchester Computing University of Manchester Oxford Road Manchester United Kingdom M13 9PL
DataObject, the DataObjects "DO_", "DO_NT_" and "DO_LITE_", the DataObjects "_Dmap_Switch", and the viewers lite 3D, 2D and Universal "Minimal", "_TrackObj" and "_TrackAll3".