amuse/lib/Listener.cpp

#include "amuse/Listener.hpp"

namespace amuse {

static void Cross(Vector3f& out, const Vector3f& a, const Vector3f& b) {
  out[0] = a[1] * b[2] - a[2] * b[1];
  out[1] = a[2] * b[0] - a[0] * b[2];
  out[2] = a[0] * b[1] - a[1] * b[0];
}

void Listener::setVectors(const float* pos, const float* dir, const float* heading, const float* up) {
  for (int i = 0; i < 3; ++i) {
    m_pos[i] = pos[i];
    m_dir[i] = dir[i];
    m_heading[i] = heading[i];
    m_up[i] = up[i];
  }

  Normalize(m_heading);
  Normalize(m_up);
  Cross(m_right, m_heading, m_up);
  Normalize(m_right);

  m_dirty = true;
}

} // namespace amuse