Ray Tracing An Area - Autodesk LIGHTSCAPE Manual

Enter the number of the first frame to render in
4.
the From box.
Enter the number of the last frame to render in
5.
the To box.
To render an interlaced animation, Enable Use
6.
Interlace.
The Even First Scanline option becomes available.
To cause the first field of the interlaced anima-
7.
tion to contain the frame's even-numbered scan
lines, enable Even First Scanline. If this option is dis-
abled, the first field will contain the frame's odd-
numbered scan lines.
Note: Antialiasing takes interlacing into account in
order to generate higher-quality animations.
To adjust the steps between consecutive frames,
8.
enter a number in the Step box.
Note: You can adjust the number of steps between
consecutive frames to test the animation path and
rendering options.

Ray Tracing an Area

During the Solution stage, use the Ray Trace Area
tool to preview a part of your scene. This tool
ray traces only a selected section of the Graphic
window.
You can use this tool to test the results of ray trace
settings on a selected area before ray tracing your
entire model, or to test the effects of material prop-
erty changes in the current model. For more
information, see Chapter 11, "Radiosity
Processing."
You must adjust the Ray Trace Area options (if
required) before ray tracing an area.
To set the Ray Trace Area options:
Choose Display | Ray Trace Area Options.
1.
The Ray Trace Area Options dialog appears.
To ray trace the direct lighting contribution from
2.
the sun and selected luminaires, enable Ray Trace
Direct Illumination.
If you enable this option, the Soft Shadows from Sun
option becomes available
Note: Lightscape ray traces only the luminaires
that have their Ray Trace Direct Illumination prop-
erty enabled.
To blur the edges of shadow boundaries caused
3.
by the sun, enable Soft Shadows From Sun.
To generate images that closely match the
4.
OpenGL display, enable OpenGL Compatible.
To increase the number of antialiasing samples,
5.
select the appropriate antialiasing level from the An-
tialiasing Samples list.
Note: Increasing the antialiasing level can signifi-
cantly increase your processing time.
Enter the number of ray bounces in the Ray
6.
Bounces box.
For more information on these options, see
"Rendering with Ray Tracing" on page 215.
Ray Tracing an Area
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