Document data that comes from VisIt tutorial

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.

data/baseline/rendering/volume/rectilinear3D.png

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:3a24175a16a60f3e917170907546a52de15e703bd06017fecd9c6238db9d2726
-size 103177
+oid sha256:3f9bdb6825e859500308217228970c406b8f75c0ab16d0c2c8d704dfa9ae2e10
+size 116102

data/data/rectilinear/noise.vtk

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:8c23821f7436bce6d71593698e3cb0047752b4dd671513f8c4e961d4489f199f
-size 12110311

data/data/third_party/README.md

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:362e59e70e65fd365bc64221decdea1096ac9fe4346e23126ec2d35836215832
+size 456

data/data/third_party/visit/README.md

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:279231652c3bc23c31a8c7a6bf2e71f56afd11b6e09b5c05dca5dc48380ee0fb
+size 1934

data/data/third_party/visit/example.vtk

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ce56bb831ac66983f9689c2a73ec0dd7a7a91294f822ad19bf1caa093a8fba25
+size 11295710

data/data/third_party/visit/example_temp.bov

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:724a6dce8f6f5d6478891a915c76c57c5881467240bb055c6001725631f7833a
+size 350

data/data/uniform/noise.bov

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:2071da4365341303e401d20dc6e8bb35ebeccc24b801cc81ab87e75e3a4ef654
-size 339

data/data/unstructured/ucd3d.vtk

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:9a178b29073f2aa0d15375b07d0bdd28369422a352b5dcb5155cf67aebe54bbc
-size 286099

examples/clipping/Clipping.cxx

@@ -24,9 +24,9 @@ int main(int argc, char* argv[])
   if ((argc < 4) || (argc > 5))
   {
     std::cerr << "Usage: " << argv[0] << " in_data.vtk field_name clip_value [out_data.vtk]\n\n";
-    std::cerr << "For example, you could use the ucd3d.vtk that comes with the VTK-m source:\n\n";
+    std::cerr << "For example, you could use the example.vtk that comes with the VTK-m source:\n\n";
     std::cerr << "  " << argv[0]
-              << " <path-to-vtkm-source>/data/data/unstructured/ucd3d.vtk v 0.3\n";
+              << " <path-to-vtkm-source>/data/data/third_party/visit/example.vtk temp 3.5\n";
     return 1;
   }
   std::string infilename = argv[1];

examples/tetrahedra/Tetrahedralize.cxx

@@ -24,8 +24,9 @@ int main(int argc, char* argv[])
   if ((argc < 2) || (argc > 3))
   {
     std::cerr << "Usage: " << argv[0] << " in_data.vtk [out_data.vtk]\n\n";
-    std::cerr << "For example, you could use the ucd3d.vtk that comes with the VTK-m source:\n\n";
-    std::cerr << "  " << argv[0] << " <path-to-vtkm-source>/data/data/unstructured/ucd3d.vtk\n";
+    std::cerr << "For example, you could use the example.vtk that comes with the VTK-m source:\n\n";
+    std::cerr << "  " << argv[0]
+              << " <path-to-vtkm-source>/data/data/third_party/visit/example.vtk\n";
     return 1;
   }
   std::string infilename = argv[1];

vtkm/io/testing/UnitTestBOVDataSetReader.cxx

@@ -41,7 +41,8 @@ inline vtkm::cont::DataSet readBOVDataSet(const char* fname)
 
 void TestReadingBOVDataSet()
 {
-  std::string bovFile = vtkm::cont::testing::Testing::DataPath("uniform/noise.bov");
+  std::string bovFile =
+    vtkm::cont::testing::Testing::DataPath("third_party/visit/example_temp.bov");
 
   auto const& ds = readBOVDataSet(bovFile.data());
 

vtkm/rendering/testing/UnitTestMapperVolume.cxx

@@ -26,8 +26,10 @@ namespace
 void RenderTests()
 {
   vtkm::cont::ColorTable colorTable = vtkm::cont::ColorTable::Preset::Inferno;
-  colorTable.AddPointAlpha(0.0, .01f);
-  colorTable.AddPointAlpha(1.0, .01f);
+  colorTable.AddPointAlpha(0.0, 0.01f);
+  colorTable.AddPointAlpha(0.4, 0.01f);
+  colorTable.AddPointAlpha(0.7, 0.2f);
+  colorTable.AddPointAlpha(1.0, 0.5f);
 
   vtkm::rendering::testing::RenderTestOptions options;
   options.Mapper = vtkm::rendering::testing::MapperType::Volume;
@@ -35,7 +37,7 @@ void RenderTests()
   options.ColorTable = colorTable;
 
   vtkm::cont::DataSet rectDS, unsDS;
-  std::string rectfname = vtkm::cont::testing::Testing::DataPath("rectilinear/noise.vtk");
+  std::string rectfname = vtkm::cont::testing::Testing::DataPath("third_party/visit/example.vtk");
   vtkm::io::VTKDataSetReader rectReader(rectfname);
 
   try
@@ -53,7 +55,7 @@ void RenderTests()
   }
 
   vtkm::rendering::testing::RenderTest(
-    rectDS, "hardyglobal", "rendering/volume/rectilinear3D.png", options);
+    rectDS, "temp", "rendering/volume/rectilinear3D.png", options);
 }
 
 } //namespace