mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-07-11 09:33:37 +00:00
102 lines
3.0 KiB
C++
102 lines
3.0 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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//
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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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#include <vtkm/rendering/CanvasRayTracer.h>
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#include <vtkm/rendering/ConnectivityProxy.h>
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#include <vtkm/rendering/Mapper.h>
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#include <vtkm/rendering/MapperConnectivity.h>
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#include <vtkm/rendering/View.h>
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#include <cstdlib>
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#include <vtkm/rendering/raytracing/Camera.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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VTKM_CONT
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MapperConnectivity::MapperConnectivity()
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{
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CanvasRT = nullptr;
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SampleDistance = -1;
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}
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VTKM_CONT
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MapperConnectivity::~MapperConnectivity() {}
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VTKM_CONT
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void MapperConnectivity::SetSampleDistance(const vtkm::Float32& distance)
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{
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SampleDistance = distance;
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}
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VTKM_CONT
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void MapperConnectivity::SetCanvas(Canvas* canvas)
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{
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if (canvas != nullptr)
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{
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CanvasRT = dynamic_cast<CanvasRayTracer*>(canvas);
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if (CanvasRT == nullptr)
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{
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throw vtkm::cont::ErrorBadValue("Volume Render: bad canvas type. Must be CanvasRayTracer");
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}
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}
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}
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vtkm::rendering::Canvas* MapperConnectivity::GetCanvas() const
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{
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return CanvasRT;
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}
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VTKM_CONT
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void MapperConnectivity::RenderCellsImpl(const vtkm::cont::UnknownCellSet& cellset,
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const vtkm::cont::CoordinateSystem& coords,
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const vtkm::cont::Field& scalarField,
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const vtkm::cont::ColorTable& vtkmNotUsed(colorTable),
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const vtkm::rendering::Camera& camera,
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const vtkm::Range& scalarRange,
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const vtkm::cont::Field& ghostField)
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{
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vtkm::cont::DataSet dataset;
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dataset.SetCellSet(cellset);
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dataset.AddCoordinateSystem(coords);
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dataset.AddField(scalarField);
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dataset.AddField(ghostField);
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vtkm::rendering::ConnectivityProxy tracerProxy(dataset, scalarField.GetName());
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if (SampleDistance == -1.f)
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{
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// set a default distance
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vtkm::Bounds bounds = coords.GetBounds();
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vtkm::Float64 x2 = bounds.X.Length() * bounds.X.Length();
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vtkm::Float64 y2 = bounds.Y.Length() * bounds.Y.Length();
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vtkm::Float64 z2 = bounds.Z.Length() * bounds.Z.Length();
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vtkm::Float64 length = vtkm::Sqrt(x2 + y2 + z2);
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constexpr vtkm::Float64 defaultSamples = 200.;
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SampleDistance = static_cast<vtkm::Float32>(length / defaultSamples);
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}
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tracerProxy.SetScalarRange(scalarRange);
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tracerProxy.SetSampleDistance(SampleDistance);
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tracerProxy.SetColorMap(ColorMap);
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tracerProxy.Trace(camera, CanvasRT);
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}
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vtkm::rendering::Mapper* MapperConnectivity::NewCopy() const
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{
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return new vtkm::rendering::MapperConnectivity(*this);
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}
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}
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} // namespace vtkm::rendering
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