Density of Exponential And Quadratic Fog
The density of exponential and quadratic fog element defines the density of the exponential or quadratic fog . The value of the fog density may range between 0 and 1 . The default value of the fog density is 0.1 . If the fog is in the switched off state, it will get switched on by setting the density of exponential and quadratic fog. The default setting of its color will take place according to the current scene background color setting.