GLHimmel

The sky rendering can be replaced with the rendering of the GlHimmel library. It is important to note that the sky is replaced, but the [Atmosphere] settings control still the illumination of terrain and model geometry. There exist four different texture mapping modes, where the sky comes from images, which have to be selected by the user. The image format depends on the selected mode:

• polar

• sphere

• paraboloid

• cube mapped

The most interesting mode with GlHimmel is computed, which as the name suggests computes a sky with different effects like clouds, stars and a moon in the night sky that can be controlled with GlHimmelSettings. Since GlHimmel is still new and somewhat experimental for Biosphere, the settings reflect all possible adjustments of the library and will be reduced to more useful controls in the future.