mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-19 18:45:43 +00:00
415252c662
The timer class now is asynchronous and device independent. it's using an similiar API as vtkOpenGLRenderTimer with Start(), Stop(), Reset(), Ready(), and GetElapsedTime() function. For convenience and backward compability, Each Start() function call will call Reset() internally and each GetElapsedTime() function call will call Stop() function if it hasn't been called yet for keeping backward compatibility purpose. Bascially it can be used in two modes: * Create a Timer without any device info. vtkm::cont::Timer time; * It would enable timers for all enabled devices on the machine. Users can get a specific elapsed time by passing a device id into the GetElapsedtime function. If no device is provided, it would pick the maximum of all timer results - the logic behind this decision is that if cuda is disabled, openmp, serial and tbb roughly give the same results; if cuda is enabled it's safe to return the maximum elapsed time since users are more interested in the device execution time rather than the kernal launch time. The Ready function can be handy here to query the status of the timer. * Create a Timer with a device id. vtkm::cont::Timer time((vtkm::cont::DeviceAdapterTagCuda())); * It works as the old timer that times for a specific device id.
247 lines
7.3 KiB
C++
247 lines
7.3 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/MapperCylinder.h>
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#include <vtkm/cont/Timer.h>
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#include <vtkm/cont/TryExecute.h>
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#include <vtkm/rendering/CanvasRayTracer.h>
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#include <vtkm/rendering/Cylinderizer.h>
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#include <vtkm/rendering/raytracing/Camera.h>
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#include <vtkm/rendering/raytracing/CylinderExtractor.h>
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#include <vtkm/rendering/raytracing/CylinderIntersector.h>
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#include <vtkm/rendering/raytracing/Logger.h>
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#include <vtkm/rendering/raytracing/RayOperations.h>
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#include <vtkm/rendering/raytracing/RayTracer.h>
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#include <vtkm/rendering/raytracing/Worklets.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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class CalcDistance : public vtkm::worklet::WorkletMapField
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{
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public:
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VTKM_CONT
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CalcDistance(const vtkm::Vec<vtkm::Float32, 3>& _eye_pos)
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: eye_pos(_eye_pos)
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{
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}
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typedef void ControlSignature(FieldIn, FieldOut);
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typedef void ExecutionSignature(_1, _2);
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template <typename VecType, typename OutType>
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VTKM_EXEC inline void operator()(const VecType& pos, OutType& out) const
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{
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VecType tmp = eye_pos - pos;
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out = static_cast<OutType>(vtkm::Sqrt(vtkm::dot(tmp, tmp)));
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}
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const vtkm::Vec<vtkm::Float32, 3> eye_pos;
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}; //class CalcDistance
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struct MapperCylinder::InternalsType
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{
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vtkm::rendering::CanvasRayTracer* Canvas;
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vtkm::rendering::raytracing::RayTracer Tracer;
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vtkm::rendering::raytracing::Camera RayCamera;
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vtkm::rendering::raytracing::Ray<vtkm::Float32> Rays;
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bool CompositeBackground;
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vtkm::Float32 Radius;
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vtkm::Float32 Delta;
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bool UseVariableRadius;
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VTKM_CONT
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InternalsType()
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: Canvas(nullptr)
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, CompositeBackground(true)
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, Radius(-1.0f)
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, Delta(0.5)
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, UseVariableRadius(false)
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{
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}
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};
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MapperCylinder::MapperCylinder()
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: Internals(new InternalsType)
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{
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}
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MapperCylinder::~MapperCylinder()
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{
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}
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void MapperCylinder::SetCanvas(vtkm::rendering::Canvas* canvas)
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{
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if (canvas != nullptr)
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{
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this->Internals->Canvas = dynamic_cast<CanvasRayTracer*>(canvas);
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if (this->Internals->Canvas == nullptr)
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{
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throw vtkm::cont::ErrorBadValue("Ray Tracer: bad canvas type. Must be CanvasRayTracer");
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}
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}
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else
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{
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this->Internals->Canvas = nullptr;
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}
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}
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vtkm::rendering::Canvas* MapperCylinder::GetCanvas() const
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{
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return this->Internals->Canvas;
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}
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void MapperCylinder::UseVariableRadius(bool useVariableRadius)
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{
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this->Internals->UseVariableRadius = useVariableRadius;
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}
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void MapperCylinder::SetRadius(const vtkm::Float32& radius)
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{
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if (radius <= 0.f)
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{
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throw vtkm::cont::ErrorBadValue("MapperCylinder: radius must be positive");
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}
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this->Internals->Radius = radius;
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}
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void MapperCylinder::SetRadiusDelta(const vtkm::Float32& delta)
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{
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this->Internals->Delta = delta;
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}
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void MapperCylinder::RenderCells(const vtkm::cont::DynamicCellSet& 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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{
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raytracing::Logger* logger = raytracing::Logger::GetInstance();
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logger->OpenLogEntry("mapper_cylinder");
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vtkm::cont::Timer tot_timer;
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tot_timer.Start();
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vtkm::cont::Timer timer;
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vtkm::Bounds shapeBounds;
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raytracing::CylinderExtractor cylExtractor;
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vtkm::Float32 baseRadius = this->Internals->Radius;
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if (baseRadius == -1.f)
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{
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// set a default radius
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vtkm::cont::ArrayHandle<vtkm::Float32> dist;
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vtkm::worklet::DispatcherMapField<CalcDistance>(CalcDistance(camera.GetPosition()))
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.Invoke(coords, dist);
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vtkm::Float32 min_dist =
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vtkm::cont::Algorithm::Reduce(dist, vtkm::Infinity<vtkm::Float32>(), vtkm::Minimum());
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baseRadius = 0.576769694f * min_dist - 0.603522029f * vtkm::Pow(vtkm::Float32(min_dist), 2.f) +
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0.232171175f * vtkm::Pow(vtkm::Float32(min_dist), 3.f) -
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0.038697244f * vtkm::Pow(vtkm::Float32(min_dist), 4.f) +
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0.002366979f * vtkm::Pow(vtkm::Float32(min_dist), 5.f);
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baseRadius /= min_dist;
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vtkm::worklet::DispatcherMapField<vtkm::rendering::raytracing::MemSet<vtkm::Float32>>(
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vtkm::rendering::raytracing::MemSet<vtkm::Float32>(baseRadius))
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.Invoke(cylExtractor.GetRadii());
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}
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if (this->Internals->UseVariableRadius)
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{
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vtkm::Float32 minRadius = baseRadius - baseRadius * this->Internals->Delta;
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vtkm::Float32 maxRadius = baseRadius + baseRadius * this->Internals->Delta;
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cylExtractor.ExtractCells(cellset, scalarField, minRadius, maxRadius);
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}
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else
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{
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cylExtractor.ExtractCells(cellset, baseRadius);
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}
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//
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// Add supported shapes
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//
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if (cylExtractor.GetNumberOfCylinders() > 0)
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{
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raytracing::CylinderIntersector* cylIntersector = new raytracing::CylinderIntersector();
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cylIntersector->SetData(coords, cylExtractor.GetCylIds(), cylExtractor.GetRadii());
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this->Internals->Tracer.AddShapeIntersector(cylIntersector);
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shapeBounds.Include(cylIntersector->GetShapeBounds());
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}
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//
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// Create rays
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//
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vtkm::rendering::raytracing::Camera& cam = this->Internals->Tracer.GetCamera();
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cam.SetParameters(camera, *this->Internals->Canvas);
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this->Internals->RayCamera.SetParameters(camera, *this->Internals->Canvas);
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this->Internals->RayCamera.CreateRays(this->Internals->Rays, shapeBounds);
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this->Internals->Rays.Buffers.at(0).InitConst(0.f);
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raytracing::RayOperations::MapCanvasToRays(
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this->Internals->Rays, camera, *this->Internals->Canvas);
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this->Internals->Tracer.SetField(scalarField, scalarRange);
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this->Internals->Tracer.SetColorMap(this->ColorMap);
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this->Internals->Tracer.Render(this->Internals->Rays);
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timer.Start();
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this->Internals->Canvas->WriteToCanvas(
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this->Internals->Rays, this->Internals->Rays.Buffers.at(0).Buffer, camera);
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if (this->Internals->CompositeBackground)
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{
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this->Internals->Canvas->BlendBackground();
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}
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vtkm::Float64 time = timer.GetElapsedTime();
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logger->AddLogData("write_to_canvas", time);
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time = tot_timer.GetElapsedTime();
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logger->CloseLogEntry(time);
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}
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void MapperCylinder::SetCompositeBackground(bool on)
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{
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this->Internals->CompositeBackground = on;
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}
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void MapperCylinder::StartScene()
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{
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// Nothing needs to be done.
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}
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void MapperCylinder::EndScene()
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{
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// Nothing needs to be done.
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}
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vtkm::rendering::Mapper* MapperCylinder::NewCopy() const
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{
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return new vtkm::rendering::MapperCylinder(*this);
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}
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}
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} // vtkm::rendering
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