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Penacho calculates and draws the gas dispersion of a smokestack in the atmosphere. The plume evolution and the pollutant concentration distribution over the surrounding area can be seen in an interactive 3Dgraph.
NOTE: Use Fltk_Contour insted this code! FMesh is a simply scientific data visualization tool based on OpenGL. FMesh can generate 2D and 3Dgraph of contour and color maps for any (x,y,z) scattered data set, many other options are included.