Public Member Functions
|LocalFog (Inst< SFNode > _metadata=0, Inst< SFColor > _color=0, Inst< SFString > _localFogType=0, Inst< SFFloat > _visibilityRange=0)|
|virtual void||enableGraphicsState ()|
|Set up and enable the fog with OpenGL. |
|virtual void||disableGraphicsState ()|
|Restore the previous attribs. |
Static Public Attributes
|The H3DNodeDatabase for this node. |
The distances are calculated in the coordinate space of the LocalFog node. The visibilityRange field specifies the distance in metres (in the local coordinate system) at which objects are totally obscured by the fog. Objects located outside the visibilityRange from the viewer are drawn with a constant colour of color. Objects very close to the viewer are blended very little with the fog color. A visibilityRange of 0.0 disables the LocalFog node. The visibilityRange is affected by the scaling transformations of the LocalFog node’s parents; translations and rotations have no affect on visibilityRange.
The fogType field controls how much of the fog colour is blended with the object as a function of distance. If fogType is "LINEAR", the amount of blending is a linear function of the distance, resulting in a depth cueing effect. If fogType is "EXPONENTIAL", an exponential increase in blending is used, resulting in a more natural fog appearance.