mirror of
https://gitlab.kitware.com/vtk/vtk-m
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226 lines
8.9 KiB
C++
226 lines
8.9 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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//
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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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#ifndef vtk_m_cont_ColorTableMap_h
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#define vtk_m_cont_ColorTableMap_h
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#include <vtkm/cont/ArrayHandleCounting.h>
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#include <vtkm/cont/ArrayHandleTransform.h>
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#include <vtkm/cont/ColorTable.h>
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#include <vtkm/cont/ColorTableSamples.h>
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#include <vtkm/cont/Invoker.h>
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#include <vtkm/worklet/colorconversion/LookupTable.h>
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#include <vtkm/worklet/colorconversion/Portals.h>
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#include <vtkm/worklet/colorconversion/TransferFunction.h>
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#include <vtkm/exec/ColorTable.h>
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namespace vtkm
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{
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namespace cont
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{
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/// \brief Sample each value through an intermediate lookup/sample table to generate RGBA colors
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///
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/// Each value in \c values is binned based on its value in relationship to the range
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/// of the color table and will use the color value at that bin from the \c samples.
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/// To generate the lookup table use \c Sample .
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///
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/// Here is a simple example.
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/// \code{.cpp}
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///
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/// vtkm::cont::ColorTableSamplesRGBA samples;
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/// vtkm::cont::ColorTable table("black-body radiation");
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/// table.Sample(256, samples);
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/// vtkm::cont::ArrayHandle<vtkm::Vec4ui_8> colors;
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/// vtkm::cont::ColorTableMap(input, samples, colors);
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///
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/// \endcode
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template <typename T, typename S>
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bool ColorTableMap(const vtkm::cont::ArrayHandle<T, S>& values,
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const vtkm::cont::ColorTableSamplesRGBA& samples,
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vtkm::cont::ArrayHandle<vtkm::Vec4ui_8>& rgbaOut)
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{
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if (samples.NumberOfSamples <= 0)
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{
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return false;
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}
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vtkm::worklet::colorconversion::LookupTable lookupTable(samples);
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vtkm::cont::Invoker invoke(vtkm::cont::DeviceAdapterTagAny{});
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invoke(lookupTable, values, samples.Samples, rgbaOut);
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return true;
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}
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/// \brief Sample each value through an intermediate lookup/sample table to generate RGB colors
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///
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/// Each value in \c values is binned based on its value in relationship to the range
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/// of the color table and will use the color value at that bin from the \c samples.
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/// To generate the lookup table use \c Sample .
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///
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/// Here is a simple example.
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/// \code{.cpp}
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///
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/// vtkm::cont::ColorTableSamplesRGB samples;
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/// vtkm::cont::ColorTable table("black-body radiation");
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/// table.Sample(256, samples);
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/// vtkm::cont::ArrayHandle<vtkm::Vec3ui_8> colors;
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/// vtkm::cont::ColorTableMap(input, samples, colors);
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///
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/// \endcode
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template <typename T, typename S>
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bool ColorTableMap(const vtkm::cont::ArrayHandle<T, S>& values,
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const vtkm::cont::ColorTableSamplesRGB& samples,
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vtkm::cont::ArrayHandle<vtkm::Vec3ui_8>& rgbOut)
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{
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if (samples.NumberOfSamples <= 0)
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{
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return false;
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}
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vtkm::worklet::colorconversion::LookupTable lookupTable(samples);
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vtkm::cont::Invoker invoke(vtkm::cont::DeviceAdapterTagAny{});
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invoke(lookupTable, values, samples.Samples, rgbOut);
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return true;
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}
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/// \brief Use magnitude of a vector with a sample table to generate RGBA colors
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///
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template <typename T, int N, typename S>
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bool ColorTableMapMagnitude(const vtkm::cont::ArrayHandle<vtkm::Vec<T, N>, S>& values,
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const vtkm::cont::ColorTableSamplesRGBA& samples,
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vtkm::cont::ArrayHandle<vtkm::Vec4ui_8>& rgbaOut)
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{
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using namespace vtkm::worklet::colorconversion;
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return vtkm::cont::ColorTableMap(
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vtkm::cont::make_ArrayHandleTransform(values, MagnitudePortal()), samples, rgbaOut);
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}
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/// \brief Use magnitude of a vector with a sample table to generate RGB colors
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///
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template <typename T, int N, typename S>
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bool ColorTableMapMagnitude(const vtkm::cont::ArrayHandle<vtkm::Vec<T, N>, S>& values,
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const vtkm::cont::ColorTableSamplesRGB& samples,
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vtkm::cont::ArrayHandle<vtkm::Vec3ui_8>& rgbOut)
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{
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using namespace vtkm::worklet::colorconversion;
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return vtkm::cont::ColorTableMap(
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vtkm::cont::make_ArrayHandleTransform(values, MagnitudePortal()), samples, rgbOut);
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}
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/// \brief Use a single component of a vector with a sample table to generate RGBA colors
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///
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template <typename T, int N, typename S>
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bool ColorTableMapComponent(const vtkm::cont::ArrayHandle<vtkm::Vec<T, N>, S>& values,
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vtkm::IdComponent comp,
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const vtkm::cont::ColorTableSamplesRGBA& samples,
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vtkm::cont::ArrayHandle<vtkm::Vec4ui_8>& rgbaOut)
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{
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using namespace vtkm::worklet::colorconversion;
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return vtkm::cont::ColorTableMap(
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vtkm::cont::make_ArrayHandleTransform(values, ComponentPortal(comp)), samples, rgbaOut);
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}
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/// \brief Use a single component of a vector with a sample table to generate RGB colors
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///
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template <typename T, int N, typename S>
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bool ColorTableMapComponent(const vtkm::cont::ArrayHandle<vtkm::Vec<T, N>, S>& values,
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vtkm::IdComponent comp,
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const vtkm::cont::ColorTableSamplesRGB& samples,
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vtkm::cont::ArrayHandle<vtkm::Vec3ui_8>& rgbOut)
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{
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using namespace vtkm::worklet::colorconversion;
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return vtkm::cont::ColorTableMap(
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vtkm::cont::make_ArrayHandleTransform(values, ComponentPortal(comp)), samples, rgbOut);
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}
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/// \brief Interpolate each value through the color table to generate RGBA colors
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///
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/// Each value in \c values will be sampled through the entire color table
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/// to determine a color.
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///
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/// Note: This is more costly than using Sample/Map with the generated intermediate lookup table
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template <typename T, typename S>
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bool ColorTableMap(const vtkm::cont::ArrayHandle<T, S>& values,
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const vtkm::cont::ColorTable& table,
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vtkm::cont::ArrayHandle<vtkm::Vec4ui_8>& rgbaOut)
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{
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vtkm::cont::Invoker invoke;
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invoke(vtkm::worklet::colorconversion::TransferFunction{}, values, table, rgbaOut);
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return true;
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}
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/// \brief Interpolate each value through the color table to generate RGB colors
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///
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/// Each value in \c values will be sampled through the entire color table
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/// to determine a color.
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///
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/// Note: This is more costly than using Sample/Map with the generated intermediate lookup table
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template <typename T, typename S>
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bool ColorTableMap(const vtkm::cont::ArrayHandle<T, S>& values,
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const vtkm::cont::ColorTable& table,
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vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::UInt8, 3>>& rgbOut)
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{
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vtkm::cont::Invoker invoke;
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invoke(vtkm::worklet::colorconversion::TransferFunction{}, values, table, rgbOut);
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return true;
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}
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/// \brief Use magnitude of a vector to generate RGBA colors
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///
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template <typename T, int N, typename S>
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bool ColorTableMapMagnitude(const vtkm::cont::ArrayHandle<vtkm::Vec<T, N>, S>& values,
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const vtkm::cont::ColorTable& table,
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vtkm::cont::ArrayHandle<vtkm::Vec4ui_8>& rgbaOut)
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{
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using namespace vtkm::worklet::colorconversion;
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return vtkm::cont::ColorTableMap(
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vtkm::cont::make_ArrayHandleTransform(values, MagnitudePortal()), table, rgbaOut);
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}
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/// \brief Use magnitude of a vector to generate RGB colors
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///
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template <typename T, int N, typename S>
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bool ColorTableMapMagnitude(const vtkm::cont::ArrayHandle<vtkm::Vec<T, N>, S>& values,
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const vtkm::cont::ColorTable& table,
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vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::UInt8, 3>>& rgbOut)
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{
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using namespace vtkm::worklet::colorconversion;
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return vtkm::cont::ColorTableMap(
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vtkm::cont::make_ArrayHandleTransform(values, MagnitudePortal()), table, rgbOut);
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}
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/// \brief Use a single component of a vector to generate RGBA colors
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///
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template <typename T, int N, typename S>
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bool ColorTableMapComponent(const vtkm::cont::ArrayHandle<vtkm::Vec<T, N>, S>& values,
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vtkm::IdComponent comp,
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const vtkm::cont::ColorTable& table,
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vtkm::cont::ArrayHandle<vtkm::Vec4ui_8>& rgbaOut)
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{
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using namespace vtkm::worklet::colorconversion;
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return vtkm::cont::ColorTableMap(
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vtkm::cont::make_ArrayHandleTransform(values, ComponentPortal(comp)), table, rgbaOut);
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}
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/// \brief Use a single component of a vector to generate RGB colors
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///
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template <typename T, int N, typename S>
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bool ColorTableMapComponent(const vtkm::cont::ArrayHandle<vtkm::Vec<T, N>, S>& values,
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vtkm::IdComponent comp,
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const vtkm::cont::ColorTable& table,
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vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::UInt8, 3>>& rgbOut)
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{
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using namespace vtkm::worklet::colorconversion;
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return vtkm::cont::ColorTableMap(
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vtkm::cont::make_ArrayHandleTransform(values, ComponentPortal(comp)), table, rgbOut);
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}
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}
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}
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#endif // vtk_m_cont_ColorTableMap_h
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