From the description of the add_gaussian function, I understand
Hi together, I would like to better understand how the volume rendering works. It is explained here http://yt.spacepope.org/doc/visualizing/volume_rendering.html that the user defines transfer functions in terms of RGB values. that these RGB values describe the color value in the interval [0,1]. Now, in the radiative transfer equation on the above website, the emissivity gets multiplied by the path length delta s. I am now wondering how this works: Depending on how big the step size is, one could get extremely large or extremely small intensities that are essentially unrelated to the RGB values that were previously specified. How is it possible that, for example, the color of a density isosurface depends on the density only and not on the cell size? I guess I am missing something. Cheers, Maike -- GMX DSL Doppel-Flat ab 19,99 Euro/mtl.! Jetzt mit gratis Handy-Flat! http://portal.gmx.net/de/go/dsl