944bc3c0d6
The new and improved vtkm::cont::ColorTable provides a more feature complete color table implementation that is modeled after vtkDiscretizableColorTransferFunction. This class therefore supports different color spaces ( rgb, lab, hsv, diverging ) and supports execution across all device adapters.
200 lines
7.0 KiB
C++
200 lines
7.0 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//
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// Copyright 2016 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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// Copyright 2016 UT-Battelle, LLC.
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// Copyright 2016 Los Alamos National Security.
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//
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// Under the terms of Contract DE-NA0003525 with NTESS,
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// the U.S. Government retains certain rights in this software.
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//
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// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
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// Laboratory (LANL), the U.S. Government retains certain rights in
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// this software.
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//============================================================================
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#include <vtkm/rendering/Color.h>
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#include <vtkm/rendering/TextAnnotation.h>
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#include <vtkm/rendering/View1D.h>
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namespace vtkm
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{
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namespace rendering
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{
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View1D::View1D(const vtkm::rendering::Scene& scene,
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const vtkm::rendering::Mapper& mapper,
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const vtkm::rendering::Canvas& canvas,
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const vtkm::rendering::Color& backgroundColor,
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const vtkm::rendering::Color& foregroundColor)
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: View(scene, mapper, canvas, backgroundColor, foregroundColor)
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{
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}
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View1D::View1D(const vtkm::rendering::Scene& scene,
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const vtkm::rendering::Mapper& mapper,
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const vtkm::rendering::Canvas& canvas,
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const vtkm::rendering::Camera& camera,
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const vtkm::rendering::Color& backgroundColor,
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const vtkm::rendering::Color& foregroundColor)
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: View(scene, mapper, canvas, camera, backgroundColor, foregroundColor)
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{
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}
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View1D::~View1D()
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{
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}
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void View1D::Paint()
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{
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this->GetCanvas().Activate();
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this->GetCanvas().Clear();
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this->UpdateCameraProperties();
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this->SetupForWorldSpace();
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this->GetScene().Render(this->GetMapper(), this->GetCanvas(), this->GetCamera());
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this->RenderWorldAnnotations();
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this->SetupForScreenSpace();
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this->RenderScreenAnnotations();
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this->RenderColorLegendAnnotations();
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this->RenderAnnotations();
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this->GetCanvas().Finish();
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}
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void View1D::RenderScreenAnnotations()
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{
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vtkm::Float32 viewportLeft;
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vtkm::Float32 viewportRight;
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vtkm::Float32 viewportTop;
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vtkm::Float32 viewportBottom;
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this->GetCamera().GetRealViewport(this->GetCanvas().GetWidth(),
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this->GetCanvas().GetHeight(),
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viewportLeft,
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viewportRight,
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viewportBottom,
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viewportTop);
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this->HorizontalAxisAnnotation.SetColor(AxisColor);
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this->HorizontalAxisAnnotation.SetScreenPosition(
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viewportLeft, viewportBottom, viewportRight, viewportBottom);
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vtkm::Bounds viewRange = this->GetCamera().GetViewRange2D();
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this->HorizontalAxisAnnotation.SetLogarithmic(LogX);
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this->HorizontalAxisAnnotation.SetRangeForAutoTicks(viewRange.X.Min, viewRange.X.Max);
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this->HorizontalAxisAnnotation.SetMajorTickSize(0, .05, 1.0);
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this->HorizontalAxisAnnotation.SetMinorTickSize(0, .02, 1.0);
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this->HorizontalAxisAnnotation.SetLabelAlignment(vtkm::rendering::TextAnnotation::HCenter,
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vtkm::rendering::TextAnnotation::Top);
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this->HorizontalAxisAnnotation.Render(
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this->GetCamera(), this->GetWorldAnnotator(), this->GetCanvas());
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vtkm::Float32 windowaspect =
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vtkm::Float32(this->GetCanvas().GetWidth()) / vtkm::Float32(this->GetCanvas().GetHeight());
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this->VerticalAxisAnnotation.SetColor(AxisColor);
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this->VerticalAxisAnnotation.SetScreenPosition(
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viewportLeft, viewportBottom, viewportLeft, viewportTop);
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this->VerticalAxisAnnotation.SetLogarithmic(LogY);
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this->VerticalAxisAnnotation.SetRangeForAutoTicks(viewRange.Y.Min, viewRange.Y.Max);
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this->VerticalAxisAnnotation.SetMajorTickSize(.05 / windowaspect, 0, 1.0);
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this->VerticalAxisAnnotation.SetMinorTickSize(.02 / windowaspect, 0, 1.0);
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this->VerticalAxisAnnotation.SetLabelAlignment(vtkm::rendering::TextAnnotation::Right,
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vtkm::rendering::TextAnnotation::VCenter);
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this->VerticalAxisAnnotation.Render(
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this->GetCamera(), this->GetWorldAnnotator(), this->GetCanvas());
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}
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void View1D::RenderColorLegendAnnotations()
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{
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if (LegendEnabled)
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{
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this->Legend.Clear();
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for (int i = 0; i < this->GetScene().GetNumberOfActors(); ++i)
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{
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vtkm::rendering::Actor act = this->GetScene().GetActor(i);
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vtkm::Vec<double, 4> colorData;
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act.GetColorTable().GetPoint(0, colorData);
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//colorData[0] is the transfer function x position
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vtkm::rendering::Color color{ static_cast<vtkm::Float32>(colorData[1]),
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static_cast<vtkm::Float32>(colorData[2]),
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static_cast<vtkm::Float32>(colorData[3]) };
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this->Legend.AddItem(act.GetScalarField().GetName(), color);
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}
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this->Legend.SetLabelColor(this->GetCanvas().GetForegroundColor());
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this->Legend.Render(this->GetCamera(), this->GetWorldAnnotator(), this->GetCanvas());
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}
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}
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void View1D::RenderWorldAnnotations()
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{
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// 1D views don't have world annotations.
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}
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void View1D::EnableLegend()
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{
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LegendEnabled = true;
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}
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void View1D::DisableLegend()
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{
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LegendEnabled = false;
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}
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void View1D::UpdateCameraProperties()
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{
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// Modify the camera if we are going log scaling or if our bounds are equal
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vtkm::Bounds origCamBounds = this->GetCamera().GetViewRange2D();
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vtkm::Float64 vmin = origCamBounds.Y.Min;
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vtkm::Float64 vmax = origCamBounds.Y.Max;
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if (LogY)
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{
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if (vmin <= 0 || vmax <= 0)
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{
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origCamBounds.Y.Min = 0;
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origCamBounds.Y.Max = 1;
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}
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else
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{
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origCamBounds.Y.Min = log10(vmin);
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origCamBounds.Y.Max = log10(vmax);
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if (origCamBounds.Y.Min == origCamBounds.Y.Max)
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{
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origCamBounds.Y.Min /= 10;
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origCamBounds.Y.Max *= 10;
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}
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}
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}
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else
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{
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origCamBounds.Y.Min = vmin;
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origCamBounds.Y.Max = vmax;
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if (origCamBounds.Y.Min == origCamBounds.Y.Max)
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{
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origCamBounds.Y.Min -= .5;
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origCamBounds.Y.Max += .5;
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}
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}
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// Set camera bounds with new top/bottom values
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this->GetCamera().SetViewRange2D(
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origCamBounds.X.Min, origCamBounds.X.Max, origCamBounds.Y.Min, origCamBounds.Y.Max);
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// if unchanged by user we always want to start with a curve being full-frame
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if (this->GetCamera().GetMode() == Camera::MODE_2D && this->GetCamera().GetXScale() == 1.0f)
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{
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vtkm::Float32 left, right, bottom, top;
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this->GetCamera().GetViewRange2D(left, right, bottom, top);
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this->GetCamera().SetXScale((static_cast<vtkm::Float32>(this->GetCanvas().GetWidth())) /
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(static_cast<vtkm::Float32>(this->GetCanvas().GetHeight())) *
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(top - bottom) / (right - left));
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}
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}
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}
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} // namespace vtkm::rendering
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