Provided by: libcoin60-doc_3.1.3-2_all bug

NAME

       SoShadowSpotLight -

       The SoShadowSpotLight class is a node for setting up a spot light which casts shadows.

SYNOPSIS

       #include <Inventor/annex/FXViz/nodes/SoShadowSpotLight.h>

       Inherits SoSpotLight.

   Public Member Functions
       SoShadowSpotLight (void)
       virtual void GLRender (SoGLRenderAction *action)

   Static Public Member Functions
       static void initClass (void)

   Public Attributes
       SoSFNode shadowMapScene
       SoSFFloat nearDistance
       SoSFFloat farDistance

   Protected Member Functions
       virtual ~SoShadowSpotLight ()

Detailed Description

       The SoShadowSpotLight class is a node for setting up a spot light which casts shadows.

       This node can be used instead of a normal SpotLight if you need to improve the performance
       by supplying a simplified scene graph to be used when rendering the shadow map(s). For
       instance, the shadow map scene graph doesn't need any textures or materials, and any non-
       casters can also be excluded from this scene graph. It's more optimal to use this node
       than to use the SoShadowStyle node to control this, at the cost of some extra application
       complexity.

       It's especially useful if you have a scene with few shadow caster nodes and lots of shadow
       receiver nodes.

       Currently, this node must be placed somewhere in the SoShadowGroup subgraph to cast
       shadows.

       FILE FORMAT/DEFAULTS:

           ShadowSpotLight {
             shadowMapScene NULL
             nearDistance -1
             farDistance -1
           }

       Here is the the example from SoShadowGroup, modified to use SoShadowSpotLight instead of a
       normal SoSpotLight. Notice that only the sphere casts shadows.

         DirectionalLight { direction 0 0 -1 intensity 0.2 }

         ShadowGroup {
           quality 1 # to get per pixel lighting

           ShadowSpotLight {
             location -8 -8 8.0
             direction 1 1 -1
             cutOffAngle 0.35
             dropOffRate 0.7

             shadowMapScene
             DEF sphere Separator {
                 Complexity { value 1.0 }
                 Material { diffuseColor 1 1 0 specularColor 1 1 1 shininess 0.9 }
                 Shuttle { translation0 -3 1 0 translation1 3 -5 0 speed 0.25 on TRUE }
                 Translation { translation -5 0 2 }
                 Sphere { radius 2.0 }
               }
           }
           # need to insert the sphere in the regular scene graph as well
           USE sphere

           Separator {
             Material { diffuseColor 1 0 0 specularColor 1 1 1 shininess 0.9 }
             Shuttle { translation0 0 -5 0 translation1 0 5 0 speed 0.15 on TRUE }
             Translation { translation 0 0 -3 }
             Cube { depth 1.8 }
           }
           Separator {
             Material { diffuseColor 0 1 0 specularColor 1 1 1 shininess 0.9 }
             Shuttle { translation0 -5 0 0 translation1 5 0 0 speed 0.3 on TRUE }
             Translation { translation 0 0 -3 }
             Cube { }
           }

           Coordinate3 { point [ -10 -10 -3, 10 -10 -3, 10 10 -3, -10 10 -3 ] }
           Material { specularColor 1 1 1 shininess 0.9 }

           Complexity { textureQuality 0.1 }
           Texture2 { image 2 2 3 0xffffff 0x225588 0x225588 0xffffff }
           Texture2Transform { scaleFactor 4 4 }
           FaceSet { numVertices 4 }
         }

       Since:
           Coin 3.0

Constructor & Destructor Documentation

   SoShadowSpotLight::SoShadowSpotLight (void) Constructor.
   SoShadowSpotLight::~SoShadowSpotLight () [protected, virtual] Destructor.

Member Function Documentation

   void SoShadowSpotLight::initClass (void) [static] Sets up initialization for data common to
       all instances of this class, like submitting necessary information to the Coin type
       system.
       Reimplemented from SoSpotLight.

   void SoShadowSpotLight::GLRender (SoGLRenderAction *action) [virtual] Action method for the
       SoGLRenderAction.
       This is called during rendering traversals. Nodes influencing the rendering state in any
       way or who wants to throw geometry primitives at OpenGL overrides this method.

       Reimplemented from SoSpotLight.

Author

       Generated automatically by Doxygen for Coin from the source code.