5.0

for details on how to display interactive shadows and lighting.

Note

Enabling shadows on lights should be given due consideration. If you turn on shadows on all

lights, then you may find the effect very confusing and somewhat un-natural, especially if there

are many lights in a small scene. This will also have an affect on performance, during navigation

and general refreshing of the navigation window. You may wish to consider only enabling

shadows on a few strategically positioned lights, to create the effect you require.

In addition to choosing which lights in your scene will cast shadows, you may also select which items in

the scene should cast a shadow. Each item in the scene has its own shadow casting option.

The available shadow casting options available for an item, are:

• Off. Choose this to disable shadows. The selected item will not cast a shadow from any light source.

• On. Choose this to enable shadows. The selected item will cast a shadow from any light source that

has shadows enabled.

• Inherit. Choose this to inherit the shadow casting option from the parent item. i.e. the selected item

will use the same option as the item directly above it in the Selection Tree path (see the section called

"Selection Tree" in the chapter called "Selecting Items" in the JetStream Roamer book for more

information on the selection tree and its structure). For example, if you turn shadow casting On for a

Group and the Geometry contained within that Layer is set to Inherit, then the Geometry will cast

shadows also, as it inherits the On option from its parent (the Group).

Note

If all items in the scene are set to Inherit then the default setting is On.

To set an items shadow casting option:

• Right click on an item in the scene, select Presenter from the context menu and then choose the

shadow casting option you require.

Note

The item selected will depend on your Selection Resolution setting. See the section called

"Selection Resolution" in the chapter called "Selecting Items" in the JetStream Roamer book for

more information.

• Right click on an item in the Selection Tree (see the section called "Selection Tree" in the chapter

called "Selecting Items" in the JetStream Roamer book for more information), select Presenter from

the context menu and then choose the shadow casting option you require.

26.6. Advanced Lighting

JetStream Presenter is capable of many advanced lighting effects, including soft shadows, physically

Presenter Lighting

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