9

IFL Files 617
The IFL file listed above specifies sand.tga to be
used for the first 20 frames, pebble.tga to be used
for the next 40 frames, stone.tif to be used for 20
frames, and boulder.tif to be used for 20 frames.
Tip: Specify only the fi le names in your IFL files.
Thefilepathscanbederivedfromthemappaths
established in your preferences. See External Path
Configuration (page 3–811).IFLfileswithpath
names can be used only on the system on which
you create them.
See also
Image File List Control Dialog (page 3–618)
IFL Manager Utility (page 3–619)
S equentia lly Number ed Fil es
You can use incrementally numbered bitmap files
(for example, frame001.bmp, frame002.bmp, and
so on) to construct an IFL file. Either use the IFL
Manager Utility (page 3–619),orusetheSequence
check box in a file selector dialog, as described in
the follow ing procedures.
Pr ocedur es
To construct an IFL file from sequentially numbered
files:
1.
In the file selector dialog, na vigate to a directory
that has a sequence of incrementally numbered
bitmaps.
2. Choosethenameofoneofthesequentialfiles
(for example, image01.bmp).
The Sequence check box becomes available.
3. TurnontheSequencecheckbox.
The Setup button becomes available.
4. Click S etup to display the ImageFileListControl
dialog (page 3–618).
5. In the Image File List Control dialog, choose
the options you want, and then click OK.
Tip: Use the Browse button to set the Target Path
to a directory on your hard disk. Do not set this
path to a CD-ROM drive, because you cannot
save the file there.
The Image File List (IFL) file is saved to the
target directory.
6. In the file selector dialog, click OK.
ThisassignsthenewlycreatedIFLfileasthe
bitmap.
Example: To select a set of still images as a v iewport
back gr oun d:
1.
Activatetheviewportwhereyouwantthe
animated background.
2. Choose Views menu > Viewport Background.
3. In the Background Source group, click Files.
A Viewport Background dialog is displayed.
4. On S elect Backg round Image dialog, use the
LookInfieldtonavigatetothedirectory
containing the files you want to use for t he
sequence.
If necessary, change the file typ e to match the
file name extension of the sequence, or choose
All Formats.
Note: The S elect Background Image File dialog
uses the last location where a bitmap was
chosen, rather than t he default bitmap path
defined in Customize menu > Configure User
Paths.
5. ConstructanIFLfileasdescribedinthe
previous procedure.
6. On the Select Background Image dialog, click
OK.
The IFL file now provides the background for
the viewport.