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Next: 1.2.3 Up: 1.2 Part (b) Previous: 1.2.1

1.2.2 -- Isosurfaces

This network creates an isosurface of equal density in the lobster and displays it in the Geometry Viewer. The isosurface is coloured according to the rate of change of the density (in any direction, that is, the magnitude of the gradient of the density), red areas indicate slowly varying density (for example, the exoskeleton and an internal central region), and lighter yellow areas indicate faster varying density (typically softer tissues).

The value of the isosurface is wired to an animated float, and pressing the sleep button presented will step the isosurface through 20 steps from high density through to low density. This gives an excellent indication not only of how the density varies within the lobster, but also of how fast it changes within the lobster (due to the colouring of the isosurface).

Kevin Pulo