PointLight { exposedField SFFloat ambientIntensity 0 exposedField SFVec3f attenuation 1 0 0 exposedField SFColor color 1 1 1 exposedField SFFloat intensity 1 exposedField SFVec3f location 0 0 0 exposedField SFBool on TRUE exposedField SFFloat radius 100 }Explanation :
The PointLight node specifies a point light source at a 3D location in the local coordinate system. A point source emits light equally in all directions; that is, it is omni-directional. PointLight nodes are specified in the local coordinate system and are affected by ancestor transformations.
A PointLight node illuminates geometry within radius (>= 0.0) meters of its location. Both radius and location are affected by ancestors' transformations (scale radius and transform location).
PointLight node's illumination falls off with distance as specified by three attenuation coefficients. The attenuation factor is 1/max(attenuation[0] + attenuation[1]*r + attenuation[2]*r2, 1), where r is the distance of the light to the surface being illuminated. The default is no attenuation. An attenuation value of (0, 0, 0) is identical to (1, 0, 0). Attenuation values must be >= 0.0.