text: /*********************************************************************************
   *
   * Inviwo - Interactive Visualization Workshop
   *
   * Copyright (c) 2019-2020 Inviwo Foundation
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice, this
   * list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright notice,
   * this list of conditions and the following disclaimer in the documentation
   * and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
   * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   *********************************************************************************/
  
  #pragma once
  
  #include <inviwo/core/common/inviwocoredefine.h>
  
  #include <inviwo/core/ports/datainport.h>
  #include <inviwo/core/ports/dataoutport.h>
  #include <inviwo/core/ports/meshport.h>
  #include <inviwo/core/ports/volumeport.h>
  
  #include <inviwo/core/util/glm.h>
  
  #include <functional>
  #include <optional>
  
  namespace inviwo {
  
  class Inport;
  
  class Mesh;
  class Volume;
  
  namespace util {
  
  /**
   * Calculate a bounding box of the position buffer of the mesh in world space. The bounding box is
   * represented using a mat4, where all positions is between `bbox * (x,y,z,1) where x, y, and z are
   * between 0 and 1.
   */
  IVW_CORE_API mat4 boundingBox(const Mesh &mesh);
  
  /**
   * Calculate a bounding box of the position buffers of all the meshs in world space. The bounding
   * box is represented using a mat4, where all positions is between `bbox * (x,y,z,1) where x, y, and
   * z are between 0 and 1.
   */
  IVW_CORE_API mat4 boundingBox(const std::vector<std::shared_ptr<const Mesh>> &meshes);
  
  /**
   * Calculate a bounding box of the volume in world space. The bounding box is
   * represented using a mat4, where all positions is between `bbox * (x,y,z,1) where x, y, and z are
   * between 0 and 1.
   */
  IVW_CORE_API mat4 boundingBox(const Volume &volume);
  
  /**
   * Calculate a bounding box of all the volumes in world space. The bounding box is
   * represented using a mat4, where all positions is between `bbox * (x,y,z,1) where x, y, and z are
   * between 0 and 1.
   */
  IVW_CORE_API mat4 boundingBox(const std::vector<std::shared_ptr<Volume>> &volumes);
  
  /**
   * Construct function the returns the bounding box of the data in the port. I the port is empty the
   * function should return std::nullopt;
   */
  /**@{*/
  IVW_CORE_API std::function<std::optional<mat4>()> boundingBox(const DataInport<Mesh> &mesh);
  IVW_CORE_API std::function<std::optional<mat4>()> boundingBox(const DataInport<Mesh, 0> &meshes);
  IVW_CORE_API std::function<std::optional<mat4>()> boundingBox(
      const DataInport<Mesh, 0, true> &meshes);
  IVW_CORE_API std::function<std::optional<mat4>()> boundingBox(const DataOutport<Mesh> &mesh);
  
  IVW_CORE_API std::function<std::optional<mat4>()> boundingBox(const DataInport<Volume> &volume);
  IVW_CORE_API std::function<std::optional<mat4>()> boundingBox(
      const DataInport<std::vector<std::shared_ptr<Volume>>> &volumes);
  IVW_CORE_API std::function<std::optional<mat4>()> boundingBox(const DataOutport<Volume> &volume);
  IVW_CORE_API std::function<std::optional<mat4>()> boundingBox(
      const DataOutport<std::vector<std::shared_ptr<Volume>>> &volumes);
  /**@}*/
  
  }  // namespace util
  
  }  // namespace inviwo
  