sim/portrayal3d/grid/quad

This package holds special Simple Portrayals which display 2D field elements
as surfaces.  Used with ValueGrid2DPortrayal3D (in sim/portrayal3d/grid)


QuadPortrayal.java

An abstract superclass for various kinds of surfaces.


MeshPortrayal.java

A surface in the form of a simple 2D mesh.


TilePortrayal.java

A "surface" of sorts where every value is a square at a certain elevation.


ValueGridCellInfo.java

A special object used by ValueGrid2DPortrayal3D to convey to the 
QuadPortrayal important information about the values being portrayed.

