There is an example of volume visualization in Chapter 1 of the IRIS Explorer's User's Guide. This example uses atmospheric data. The map uses the following modules:
ReadLat reads in the color map for the water buoyancy data.
ReadLat<3> reads in the water buoyancy data.
ReadLat<2> reads in the rain density data.
IsosurfaceLat generates an isosurface of the rain density.
WireFrame creates a frame that defines the boundaries of the storm data.
GenerateColorMap produces a colormap for the buoyancy data.
VolumeToGeom converts the volume data to geometry for Render - this
module does the splatting - see below).
Render renders the rain density isosurface and the water buoyancy volume
(the purple haze).
| Example of a Combined Surface Fitting and Direct Volume Rendering
image from Iris Explorer. The cloud consists of splats, small planar shapes that simulate fuzzy blobs. Note that splats can take a long time to render. There is a quality-time tradeoff that can be adjusted in this module. The lower the error tolerance the higher the quality and the longer the rendering time. |
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Visualization and Rendering
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Last modified on February 16, 1999, G. Scott Owen, owen@siggraph.org