Function RotateRoomPoints

Descent3/render.cpp:490–509

Rotates all the points in a room

// Rotates all the points in a room
void RotateRoomPoints(room *rp, vector *world_vecs) {
  int i;
  // Jig the vertices a bit if being deformed
  if (Viewer_object->effect_info && (Viewer_object->effect_info->type_flags & EF_DEFORM)) {
    for (i = 0; i < rp->num_verts; i++) {
      vector vec = world_vecs[i];
      float val = ((ps_rand() % 1000) - 500.0) / 500.0;
      val *= Viewer_object->effect_info->deform_time;
      vec += Global_alter_vec * (Viewer_object->effect_info->deform_range * val);

      g3_RotatePoint(&World_point_buffer[rp->wpb_index + i], &vec);
      g3_ProjectPoint(&World_point_buffer[rp->wpb_index + i]);
    }
  } else {
    for (i = 0; i < rp->num_verts; i++) {
      g3_RotatePoint(&World_point_buffer[rp->wpb_index + i], &world_vecs[i]);
      g3_ProjectPoint(&World_point_buffer[rp->wpb_index + i]);
    }
  }
}

// Given a vector, reflects that vector off of a mirror vector
// Useful for specular and other reflective surfaces