Autodesk LIGHTSCAPE Manual page 162

9 Photometrics
In the Symmetry list, select Quadrant.
7.
Arcs that mirror the one you created are added to the
remaining three quadrants, completing the bottom
half of the sphere.
In the Mode list, select Edit.
8.
Drag one of the points on the equator to the cen-
9.
ter of the photometric web.
The point opposite the one you drag also moves.
Note: Instead of dragging, you can enter absolute
values for the selected point in the appropriate
boxes.
Move the other pair of points on the equator to
10.
the center.
Your photometric web should resemble the
following:
Adjust the viewpoint to a top view, and then drag
11.
the outermost points about halfway toward the axis
while maintaining the web's circular shape.
154
Return to the previous view. The photometric
12.
web should resemble the following:
Select Insert in the Mode list, and then click the
13.
photometric web to add more lines of latitude. This
provides greater control of the web's shape.
14. When you have finished editing your photomet-
ric web, click Save As to save the web as an IES file, or
click OK to close the Photometric Web editor.
When added to a model, this customized photo-
metric web should resemble the following:
For information about assigning a photometric web
to a luminaire, see "Defining Intensity Distribution"
on page 137.
Lightscape