bounds method

Implementation

Rect bounds() {
  if (_commands.isEmpty) {
    return Rect.zero;
  }
  double smallestX = double.maxFinite;
  double smallestY = double.maxFinite;
  double largestX = -double.maxFinite;
  double largestY = -double.maxFinite;
  for (final PathCommand command in _commands) {
    switch (command.type) {
      case PathCommandType.move:
        final MoveToCommand move = command as MoveToCommand;
        smallestX = math.min(move.x, smallestX);
        smallestY = math.min(move.y, smallestY);
        largestX = math.max(move.x, largestX);
        largestY = math.max(move.y, largestY);
        break;
      case PathCommandType.line:
        final LineToCommand move = command as LineToCommand;
        smallestX = math.min(move.x, smallestX);
        smallestY = math.min(move.y, smallestY);
        largestX = math.max(move.x, largestX);
        largestY = math.max(move.y, largestY);
        break;
      case PathCommandType.cubic:
        final CubicToCommand cubic = command as CubicToCommand;
        for (List<double> pair in <List<double>>[
          <double>[cubic.x1, cubic.y1],
          <double>[cubic.x2, cubic.y2],
          <double>[cubic.x3, cubic.y3],
        ]) {
          smallestX = math.min(pair[0], smallestX);
          smallestY = math.min(pair[1], smallestY);
          largestX = math.max(pair[0], largestX);
          largestY = math.max(pair[1], largestY);
        }
        break;
      case PathCommandType.close:
        break;
    }
  }
  return Rect.fromLTRB(smallestX, smallestY, largestX, largestY);
}