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In addition to specifying blended colors with a color map you may create a blend of densities using a density_map. The syntax for a density map is identical to a color map except you specify a density in each map entry (and not a color).
The syntax for density_map is as follows:
- density_map{
}
- [
]
Where Value is a float value between 0.0 and 1.0 inclusive and each DENSITY_BODY is anything which can be inside a density{...} statement. The density keyword and {} braces need not be specified.
Note that the [] brackets are part of the actual DENSITY_MAP_ENTRY. They are not notational symbols denoting optional parts. The brackets surround each entry in the density map. There may be from 2 to 256 entries in the map.
Density maps may be nested to any level of complexity you desire. The densities in a map may have color maps or density maps or any type of density you want.
Entire densities may also be used with the block patterns such as checker, hexagon and brick. For example...
density {
checker
density { Flame scale .8 }
density { Fire scale .5 }
}
Note that in the case of block patterns the density wrapping is required around the density information.
A density map is also used with the average density type. See "Average" for details.
You may declare and use density map identifiers but the only way to declare a density block pattern list is to declare a density identifier for the entire density.
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