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60 Chapter 17: Rendering

Object Animation

The radiosity solution is calculated for each

frame if any object is animated in the scene (the

default is to calculate the current f rame only).

You specify the parameters (goals/quality) you

want to reach on the Advanced Lighting panel.

It is recommended to run a solution first and

verify if it’s successful before proceeding to the

whole animation. These parameters will then be

reprocessed for each frame.

You go to the render dialog, Common Parameters

rollout, and enable the option Compute Advanced

Lighting When Required, and then render the

scene. The radiosity is processed for the first frame

and then rendered. 3ds Max then moves to the

next frame, processes radiosity, renders, and so on.

Camera Animation

If objects remain static in the scene and only the

camera moves, you c an solve radiosity at frame

0, and when you render the animation, turn off

Compute Advanced Lighting When Required.

R a diosi ty Contr ols

Render Scene dialog > Choose Default Scanline Renderer

as the production renderer. > Advanced Lighting panel

>ChooseRadiosity.

Rendering menu > Advanced Lighting > R adiosity

> Render Scene dialog > Advanced Lighting panel >

Radiosity is chosen.

Radiosity is a technique to calculate indirect light.

Specifically, radiosity calculates the interreflections

of diffuse light among all the surfaces in your

scene. To make this calculation, radiosit y takes

intoaccountthelightingyou’vesetup,the

materials you’ve applied, and environment settings

you ’ve made.

The radiosit y processing of a scene is distinct from

the rendering process. You can render without

radiosity. However, to render

with

radiosity, you

must always calcu late radiosity first.

Once a radiosity solution for a scene has been

calculated, it can be used in multiple renderings,

including multiple frames of an animation. If

there are moving objects i n the scene, radiosity

might need to be recalculated; see

Animation w ith

Radiosity (page 3–59)

For an overview of radiosity and how radiosity

works in 3ds Max, see

Radiosity Solution (page

3–50)

For sug gestions regarding workflow for using

radiosity, see

Radiosit y Workflows (page 3–56)

Note: Radiosity is also know n as

global

illuminat ion

Impor tant: Ifthedimensionsofyourscenearenot

realistic, then radi osity will not show realistic lighting,

either.