Polyhedron.hpp

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// This file is part of the Acts project.
//
// Copyright (C) 2018-2020 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/.

#pragma once

#include "Acts/Geometry/Extent.hpp"
#include "Acts/Surfaces/BoundaryCheck.hpp"
#include "Acts/Utilities/Definitions.hpp"
#include "Acts/Utilities/Helpers.hpp"

#include <array>
#include <limits>
#include <vector>

namespace Acts {

struct Polyhedron {
  using FaceType = std::vector<size_t>;
  using ColorType = std::array<int, 3>;

  Polyhedron() = default;

  Polyhedron(const std::vector<Vector3D>& verticesIn,
             const std::vector<FaceType>& facesIn,
             const std::vector<FaceType>& triangularMeshIn,
             bool radialCheck = false)
      : vertices(verticesIn),
        faces(facesIn),
        triangularMesh(triangularMeshIn) {}

  std::vector<Vector3D> vertices;

  std::vector<FaceType> faces;

  std::vector<FaceType> triangularMesh;

  void merge(const Polyhedron& other);

  void move(const Transform3D& transform);

  template <typename helper_t>
  void draw(helper_t& helper, bool triangulate = false,
            const ColorType& color = {120, 120, 120}) const {
    // vertices and faces are
    if (not triangulate) {
      helper.faces(vertices, faces, color);
    } else {
      helper.faces(vertices, triangularMesh, color);
    }
  }

  Extent extent(const Transform3D& transform = Transform3D::Identity()) const;
};
}  // namespace Acts