3D Display of Mesh Tally Data.

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To display the data in 3D, each mesh cell is drawn separately with the data color for that cell. The cells can be drawn solid or as a wireframe. The wireframe rendition of a cylindrical mesh cell is shown at left; the solid rendition at right. The intermediate radial lines (between the top and bottom faces) are not drawn when the cell is part of a mesh. As in the 2D plots, the mesh can be shown along with the data. The line thickness used when drawing wireframe mesh cells is specified independently of the line thickness for wireframe geometry cells.

Settings on the Mesh Tally Style property page control the appearance of the 3D data. The mesh cells may be shrunken so that they are smaller than the mesh. The shrinking can be by a fraction of the original mesh cell size or by a fixed value. A small shrinking applied to cells drawn in the wire frame mode prevents overlap of lines that would otherwise overlap; the color of such overlapping lines is unpredictable. A large shrink fraction will permit some of the geometry to be visible through the smaller mesh cells. Moritz does not check if the shrink fraction or value is so large that the cells disappear. In this Figure , the wire frame mesh cells are shrunk by about 50%. The mesh is shown in gray.

This Figure   shows a 3D display of an accelerator target room with grid tally data displayed as shrunken solid boxes. A clip plane was used to remove the top of the model and reveal the interior. A beam spill has occurred just outside of the target block. Within the target block, which is a solid concrete block, mesh cells with no neutron flux tallied are colored black. This Figure  shows the same data with mesh cells drawn in wire frame.

The color of the mesh cells may contain diffuse and specular components so that the shading depends on the orientation of the cell with respect to the position of the light sources. The ambient, diffuse, and specular colors are derived from the data color using the factors on the Default 3D Colors property page. The user can specify whether to use these components or use a color that is independent of the position relative to the light sources.

A right click on a data cell in the 3D plot shows a data popup rather than the 3D context menu. The data popup shows the mesh indices (I, J, and K) and data value of the cell. The value is modified by the multiplier on the Mesh Tally property page. Selecting the items in the popup has no effect. Picking mesh cells in 2D will be added in future versions.

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