6 modules - PI-VR GmbH

6 MODULES» Spot Light A Spot Light is the most common light source to illuminate a scene. Itemits light within a cone that is described by two angles: a cone angle definingthe areas with hard light and a penumbra angle defining the areas with softillumination.» Point Light A Point Light emits light from a given position uniformly to all directions.Each light source consists of two entries in the Scenegraph: a light source node anda light transformation node. Double-clicking on a light source in the Light Editorselects its corresponding light source node in the Scenegraph. Its position in thegraph defines which geometries are lit by the light if Local Lighting (see below) isactivated for it. By default, the other node that stores the light transformation is achild node of a special group node called “LightTransforms” which contains all lighttransformation nodes. It is only visible in the Scenegraph if Show Internal Nodes isactivated in the Preferences: Edit » Preferences » MainWindow » Show Internal Nodesin Scenegraph. The transformation node of a light source called “LightName” has thename “LightNameTransformGroup”. You may reposition this node in the Scenegraphstructure.» Properties108» Name: Sets the name for the selected light.» Type: Changes the light source type.» Local Lighting: Activating this feature provides light sources to function as alocal light. Only geometry inside the light source node will be lit. This enablesthe user to set a more sophisticated lighting of the scene.» Enabled: If checked, the light source is active and emits light. If unchecked,the light source is inactive and doesn’t emit any light.» Intensity: Changes the light intensity. Higher values result in brighter lighting.» Ambient: Defines a light’s ambient color. This is the color in dark areas of anobject. This is usually the color where no light is received.