9

Rendering Parameters Rollout (Radiosity) 71
Intensity—
Specifies the intensity of the
illumination in lux or candelas depending on the
units you have selected in the Customize > Units
Setup dialog (page 3–848).
Pressur e—Specifies the percentage of the sampled
energy to be used when you add or remove
illumination.
Add Illumination—Adds illumination starting
at the vertex of a selected object. 3ds Max adds
illumination based on the amount in the Pressure
spinner. Thepressureamountcorrespondstoa
percentage of the sampled energy. For example, if
a wa ll has about 2,000 lux on it, Add Illumination
adds 200 lux to the surface of the selected object.
Remove Illumination—Removes illumination
starting at the vertex of a selected object. 3ds Max
removes illumination based on the amount
inthePressurespinner. Thepressureamount
corresponds to a percentage of the sampled energy.
For example, if a wall has about 2,000 lux on it,
Remove Illumination removes 200 lux f rom the
surface of the selected object.
Pick Illumination—Samples the amount of
illumination from a surface that you select. To
save you from inadvertently making bright or
dark spots, Pick Illumination uses an amount of
illumination relative to the surface illumination
you sample. Click the button, and move the
eyedropper cursor over the surface. When you
click a surface, the amount of illumination in lux
or candelas is reflected in t he Intensity spinner. For
example, if you used Pick Illumination over a wall
that has 6 lux of energy, then 0.6 lux displays in
the Intensity spinner. The amount of illumination
3dsMaxaddsorremovesonthesurfacewillbe
this value multiplied by the Pressure value.
Cle ar —Clears all the changes you made. Processing
additional radiosity iterations or changing the
filtering amount will also discard any changes to
the solution you made with the light painting tool.
Using light painting to add or remove light in a radiosity
solution.
R ender i ng Pa r ameter s R ol lout
(R a diosi ty )
Main toolbar > Render Scene > Render Scene dialog
> Choose Default Scanline Renderer as the active
production renderer. > Advanced Lighting panel > Select
Advanced Lighting rollout > Choose Ra diosity from the
drop-down list. > Rendering Parameters rollout
Rendering menu > Render > Render Scene dialog
> Choose Default Scanline Renderer as the active
production renderer. > Advanced Lighting panel > Select
Advanced Lighting rollout > Choose Ra diosity from the
drop-down list. > Rendering Parameters rollout
Provides parameters that allow you to control how
you w ant to render the radiosity-processed scene.
By default when you render, 3ds Max first
recalculates the shadows from light objects, then
it adds the result of the radiosity mesh as ambient
light.
The first two options on the rollout control how the
renderer treats direct i llumination. Re-Use D irect
Illumination From Radiosity Solution pro vides a
quick render that displays colors from the radiosity
mesh. Render Direct Illumination uses the
scanline renderer to provide direct i llumination