mirror of
https://gitlab.kitware.com/vtk/vtk-m
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c3a3184d51
Sandia National Laboratories recently changed management from the Sandia Corporation to the National Technology & Engineering Solutions of Sandia, LLC (NTESS). The copyright statements need to be updated accordingly.
85 lines
2.8 KiB
C++
85 lines
2.8 KiB
C++
//=============================================================================
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//
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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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// Copyright 2015 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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// Copyright 2015 UT-Battelle, LLC.
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// Copyright 2015 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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// 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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//=============================================================================
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#include <vtkm/rendering/raytracing/RayOperations.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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namespace raytracing
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{
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template <typename T>
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struct MapCanvasFunctor
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{
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const vtkm::Matrix<vtkm::Float32, 4, 4> Inverse;
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const vtkm::Id Width;
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const vtkm::Id Height;
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const vtkm::cont::ArrayHandle<vtkm::Float32>& DepthBuffer;
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Ray<T>& Rays;
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vtkm::Vec<vtkm::Float32, 3> Origin;
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MapCanvasFunctor(Ray<T>& rays,
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const vtkm::Matrix<vtkm::Float32, 4, 4> inverse,
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const vtkm::Id width,
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const vtkm::Id height,
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const vtkm::cont::ArrayHandle<vtkm::Float32>& depthBuffer,
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const vtkm::Vec<vtkm::Float32, 3>& origin)
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: Inverse(inverse)
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, Width(width)
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, Height(height)
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, DepthBuffer(depthBuffer)
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, Rays(rays)
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, Origin(origin)
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{
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}
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template <typename Device>
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bool operator()(Device)
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{
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vtkm::worklet::DispatcherMapField<detail::RayMapCanvas, Device>(
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detail::RayMapCanvas(Inverse, Width, Height, Origin))
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.Invoke(Rays.PixelIdx, Rays.MaxDistance, DepthBuffer);
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return true;
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}
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};
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void RayOperations::MapCanvasToRays(Ray<vtkm::Float32>& rays,
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const vtkm::rendering::Camera& camera,
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const vtkm::rendering::CanvasRayTracer& canvas)
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{
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vtkm::Id width = canvas.GetWidth();
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vtkm::Id height = canvas.GetHeight();
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vtkm::Matrix<vtkm::Float32, 4, 4> projview =
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vtkm::MatrixMultiply(camera.CreateProjectionMatrix(width, height), camera.CreateViewMatrix());
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bool valid;
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vtkm::Matrix<vtkm::Float32, 4, 4> inverse = vtkm::MatrixInverse(projview, valid);
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if (!valid)
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throw vtkm::cont::ErrorBadValue("Inverse Invalid");
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MapCanvasFunctor<vtkm::Float32> functor(
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rays, inverse, width, height, canvas.GetDepthBuffer(), camera.GetPosition());
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vtkm::cont::TryExecute(functor);
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}
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}
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}
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} // vtkm::rendering::raytacing
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