Program Listing for File ball.cc

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/*
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 *                                                                     *
 * The ACME project                                                    *
 *                                                                     *
 * Copyright (c) 2020, Davide Stocco and Enrico Bertolazzi.            *
 *                                                                     *
 * The ACME project and its components are supplied under the terms of *
 * the open source BSD 2-Clause License. The contents of the ACME      *
 * project and its components may not be copied or disclosed except in *
 * accordance with the terms of the BSD 2-Clause License.              *
 *                                                                     *
 * URL: https://opensource.org/licenses/BSD-2-Clause                   *
 *                                                                     *
 *    Davide Stocco                                                    *
 *    Department of Industrial Engineering                             *
 *    University of Trento                                             *
 *    e-mail: davide.stocco@unitn.it                                   *
 *                                                                     *
 *    Enrico Bertolazzi                                                *
 *    Department of Industrial Engineering                             *
 *    University of Trento                                             *
 *    e-mail: enrico.bertolazzi@unitn.it                               *
 *                                                                     *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*/


#ifndef DOXYGEN_SHOULD_SKIP_THIS

#include "acme.hh"

namespace acme
{

  /*\
   |   _           _ _
   |  | |__   __ _| | |
   |  | '_ \ / _` | | |
   |  | |_) | (_| | | |
   |  |_.__/ \__,_|_|_|
   |
  \*/

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  ball::ball(void)
    : m_radius(QUIET_NAN),
      m_center(NAN_POINT)
  {
  }

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  ball::ball(
    real radius,
    real center_x,
    real center_y,
    real center_z
  )
    : m_radius(radius),
      m_center(center_x, center_y, center_z)
  {
  }

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  ball::ball(
    real          radius,
    point const & center
  )
    : m_radius(radius),
      m_center(center)
  {
  }

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  bool
  ball::isApprox(
    ball const & ball_in,
    real         tolerance
  )
    const
  {
    return IsApprox(this->m_radius, ball_in.m_radius, tolerance) &&
           this->m_center.isApprox(ball_in.m_center, tolerance);
  }

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  real const &
  ball::radius(void)
    const
  {
    return this->m_radius;
  }

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  point const &
  ball::center(void)
    const
  {
    return this->m_center;
  }

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  real &
  ball::radius(void)
  {
    return this->m_radius;
  }

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  point &
  ball::center(void)
  {
    return this->m_center;
  }

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  real
  ball::area(void)
    const
  {
    return real(4.0) * PI * this->m_radius * this->m_radius;
  }

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  real
  ball::volume(void)
    const
  {
    return real(4.0) / real(3.0) * PI * this->m_radius * this->m_radius * this->m_radius;
  }

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  void
  ball::translate(
    vec3 const & vector_in
  )
  {
    this->m_center.translate(vector_in);
  }

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  void
  ball::transform(
    affine const & affine_in)
  {
    this->m_center.transform(affine_in);
  }

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  bool
  ball::isInside(
    point const & point_in,
    real          /*tolerance*/
  )
    const
  {
    return (this->m_center - point_in).norm() <= this->m_radius;
  }

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  bool
  ball::isDegenerated(
    real tolerance
  )
    const
  {
    return IsApprox(this->m_radius, real(0.0), tolerance);
  }

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  bool
  ball::clamp(
    vec3 & min,
    vec3 & max
  )
    const
  {
    point center(this->m_center);
    min[0] = -this->m_radius + center[0];
    min[1] = -this->m_radius + center[1];
    min[2] = -this->m_radius + center[2];
    max[0] = +this->m_radius + center[0];
    max[1] = +this->m_radius + center[1];
    max[2] = +this->m_radius + center[2];
    return this->isClampable();
  }

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  bool
  ball::clamp(
    real & min_x,
    real & min_y,
    real & min_z,
    real & max_x,
    real & max_y,
    real & max_z)
    const
  {
    point center(this->m_center);
    min_x = -this->m_radius + center[0];
    min_y = -this->m_radius + center[1];
    min_z = -this->m_radius + center[2];
    max_x = +this->m_radius + center[0];
    max_y = +this->m_radius + center[1];
    max_z = +this->m_radius + center[2];
    return this->isClampable();
  }

  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

} // namespace acme

#endif