Obj.cpp

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// This file is part of the Acts project.
//
// Copyright (C) 2023 CERN for the benefit of the Acts project
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

#include <Acts/Definitions/Algebra.hpp>
#include <Acts/Geometry/GeometryContext.hpp>
#include <Acts/Plugins/Python/Utilities.hpp>
#include <Acts/Surfaces/Surface.hpp>
#include <Acts/Visualization/GeometryView3D.hpp>
#include <Acts/Visualization/ObjVisualization3D.hpp>
#include <Acts/Visualization/ViewConfig.hpp>

#include <memory>

#include <pybind11/pybind11.h>
#include <pybind11/stl.h>

namespace py = pybind11;
using namespace pybind11::literals;

using namespace Acts;

namespace Acts::Python {
void addObj(Context& ctx) {
  auto [m, mex] = ctx.get("main", "examples");

  {
    mex.def("writeSurfacesObj",
            [](const std::vector<std::shared_ptr<Surface>>& surfaces,
               const GeometryContext& viewContext,
               const std::array<int, 3>& viewRgb, const std::string& fileName) {
              Acts::ViewConfig sConfig = Acts::ViewConfig{viewRgb};
              Acts::GeometryView3D view3D;
              Acts::ObjVisualization3D obj;

              for (const auto& surface : surfaces) {
                view3D.drawSurface(obj, *surface, viewContext,
                                   Acts::Transform3::Identity(), sConfig);
              }
              obj.write(fileName);
            });
  }
}
}  // namespace Acts::Python