Commit b544b8e0 authored by Kenneth Moreland's avatar Kenneth Moreland
Browse files

Fix point merge for Marching Cubes with multiple isosurfaces

When the Marching Cubes algorithm merges points together for multiple
isosurfaces, it uses an ArrayHandleZip to combine the isosurface id and
the edge identification. This is to prevent merging points from
different isosurfaces. However, internally this has to do an array copy.

It was doing this copy with `ArrayCopy`. A recent change to that method
made the copy fail for `ArrayHandleZip`. The fix is to change to

The reason why this bug was introduced was because there was no test
case for this specific use. A regression test has been updated to test
for this case.
parent e1e3d4af
Pipeline #273236 passed with stage
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......@@ -33,18 +33,15 @@ void TestContourFilterWedge()
vtkm::cont::DataSet dataSet = reader.ReadDataSet();
vtkm::filter::contour::Contour contour;
contour.SetIsoValue(0, 1);
contour.SetIsoValues({ -1, 0, 1 });
contour.SetFieldsToPass({ "gyroid", "cellvar" });
auto result = contour.Execute(dataSet);
vtkm::rendering::testing::RenderTestOptions testOptions;
testOptions.Colors = { { 0.20f, 0.80f, 0.20f } };
testOptions.EnableAnnotations = false;
testOptions.DataViewPadding = 0.08;
vtkm::rendering::testing::RenderTest(result, "gyroid", "filter/contour-wedge.png", testOptions);
......@@ -60,7 +57,7 @@ void TestContourFilterUniform()
vtkm::filter::contour::Contour contour;
contour.SetIsoValue(0, 100.0);
contour.SetIsoValues({ 50, 100, 150 });
vtkm::cont::DataSet result = contour.Execute(inputData);
......@@ -69,8 +66,6 @@ void TestContourFilterUniform()
//Y axis Flying Edge algorithm has subtle differences at a couple of boundaries
vtkm::rendering::testing::RenderTestOptions testOptions;
testOptions.Colors = { { 0.20f, 0.80f, 0.20f } };
testOptions.EnableAnnotations = false;
result, "pointvar", "filter/contour-uniform.png", testOptions);
......@@ -18,6 +18,7 @@
#include <vtkm/exec/ParametricCoordinates.h>
#include <vtkm/cont/ArrayCopy.h>
#include <vtkm/cont/ArrayCopyDevice.h>
#include <vtkm/cont/ArrayHandle.h>
#include <vtkm/cont/ArrayHandleIndex.h>
#include <vtkm/cont/ArrayHandleTransform.h>
......@@ -360,7 +361,7 @@ void MergeDuplicates(const vtkm::cont::Invoker& invoker,
vtkm::cont::ArrayHandle<vtkm::Id>& connectivity)
vtkm::cont::ArrayHandle<KeyType> input_keys;
vtkm::cont::ArrayCopy(original_keys, input_keys);
vtkm::cont::ArrayCopyDevice(original_keys, input_keys);
vtkm::worklet::Keys<KeyType> keys(input_keys);
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