mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-07-30 18:50:59 +00:00
36 lines
1.4 KiB
C++
36 lines
1.4 KiB
C++
//============================================================================
|
|
// Copyright (c) Kitware, Inc.
|
|
// All rights reserved.
|
|
// See LICENSE.txt for details.
|
|
//
|
|
// This software is distributed WITHOUT ANY WARRANTY; without even
|
|
// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
// PURPOSE. See the above copyright notice for more information.
|
|
//============================================================================
|
|
#include <vtkm/rendering/raytracing/RayOperations.h>
|
|
namespace vtkm
|
|
{
|
|
namespace rendering
|
|
{
|
|
namespace raytracing
|
|
{
|
|
|
|
void RayOperations::MapCanvasToRays(Ray<vtkm::Float32>& rays,
|
|
const vtkm::rendering::Camera& camera,
|
|
const vtkm::rendering::CanvasRayTracer& canvas)
|
|
{
|
|
vtkm::Id width = canvas.GetWidth();
|
|
vtkm::Id height = canvas.GetHeight();
|
|
vtkm::Matrix<vtkm::Float32, 4, 4> projview =
|
|
vtkm::MatrixMultiply(camera.CreateProjectionMatrix(width, height), camera.CreateViewMatrix());
|
|
bool valid;
|
|
vtkm::Matrix<vtkm::Float32, 4, 4> inverse = vtkm::MatrixInverse(projview, valid);
|
|
(void)valid; // this can be a false negative for really tiny spatial domains.
|
|
vtkm::worklet::DispatcherMapField<detail::RayMapCanvas>(
|
|
detail::RayMapCanvas(inverse, width, height, camera.GetPosition()))
|
|
.Invoke(rays.PixelIdx, rays.MaxDistance, rays.Origin, canvas.GetDepthBuffer());
|
|
}
|
|
}
|
|
}
|
|
} // vtkm::rendering::raytacing
|