lwoPoints.cxx

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/**
 * PANDA 3D SOFTWARE
 * Copyright (c) Carnegie Mellon University.  All rights reserved.
 *
 * All use of this software is subject to the terms of the revised BSD
 * license.  You should have received a copy of this license along
 * with this source code in a file named "LICENSE."
 *
 * @file lwoPoints.cxx
 * @author drose
 * @date 2001-04-24
 */

#include "lwoPoints.h"
#include "lwoInputFile.h"

#include "dcast.h"
#include "indent.h"

TypeHandle LwoPoints::_type_handle;

/**
 * Returns the number of points of this group.
 */
int LwoPoints::
get_num_points() const {
  return _points.size();
}

/**
 * Returns the nth point of this group.
 */
const LPoint3 &LwoPoints::
get_point(int n) const {
  nassertr(n >= 0 && n < (int)_points.size(), LPoint3::zero());
  return _points[n];
}

/**
 * Reads the data of the chunk in from the given input file, if possible.  The
 * ID and length of the chunk have already been read.  stop_at is the byte
 * position of the file to stop at (based on the current position at
 * in->get_bytes_read()).  Returns true on success, false otherwise.
 */
bool LwoPoints::
read_iff(IffInputFile *in, size_t stop_at) {
  LwoInputFile *lin = DCAST(LwoInputFile, in);

  while (lin->get_bytes_read() < stop_at && !lin->is_eof()) {
    LPoint3 point = lin->get_vec3();
    _points.push_back(point);
  }

  return (lin->get_bytes_read() == stop_at);
}

/**
 *
 */
void LwoPoints::
write(std::ostream &out, int indent_level) const {
  indent(out, indent_level)
    << get_id() << " { " << _points.size() << " points }\n";
}