Some of the data sets that are included from VTK-m are derived from the
VisIt Tutorial Data (https://www.visitusers.org/index.php?title=Tutorial_Data).
These are covered by the VisIt license, as communicated by Eric Brugger.
Although the license for these data is compatible with VTK-m's license,
we should still attribute the source of the data and make clear the
copyrights. The data are moved into the third_party directory, and
readmes are added to document everything.
The noise.vtk and noise.bov files have been renamed example.vtk and
example_temp.bov to match the name of the file in the VisIt tutorial
data archive. The ucd3d.vtk file, which is similar to the curv3d.silo
data but altered, has been removed. It was not used for any tests. It
was referenced in a couple of example programs, but the reference is
easily changed.
These mappers can be used to render cell sets as glyphs. The following
glyph types are available for scalar fields:
- Cube
- Sphere
- Axes
- Quads
For vector fields:
- Arrows
This fix lerps the scalar field values at points of ray intersection,
ensuring rendering of quads pick the correct lerped color instead of
using the same color for the entire quad.
It looks like there might be a precision problem that is causing some
rays to terminate before they start. However, I leave that to someone
else to diagnose.
I suspect that this test is not actually mapping colors correctly, and
the difference in images might be part of that problem. However, I leave
that to someone else to diagnose.
The previous functions that enabled the render regression tests were
heavily templated, which required every test using rendering to
recompile the entire rendering system being used. Changed the interface
to not rely on templating so that the RenderTest method can be moved
into a library.
Also moved the options into a struct where they can be better managed.
The render testing functions tended to have lots of arguments that were
difficult to manage. Instead, created a single `struct` that holds all
the potential options. That way when someone specifies on option, it is
clear what option is being set.
