Vertices constructor

Implementation

Vertices(
  VertexMode mode,
  List<Offset> positions, {
  List<Offset> textureCoordinates,
  List<Color> colors,
  List<int> indices,
}) : assert(mode != null),
     assert(positions != null) {
  if (textureCoordinates != null && textureCoordinates.length != positions.length)
    throw new ArgumentError('"positions" and "textureCoordinates" lengths must match.');
  if (colors != null && colors.length != positions.length)
    throw new ArgumentError('"positions" and "colors" lengths must match.');
  if (indices != null && indices.any((int i) => i < 0 || i >= positions.length))
    throw new ArgumentError('"indices" values must be valid indices in the positions list.');

  final Float32List encodedPositions = _encodePointList(positions);
  final Float32List encodedTextureCoordinates = (textureCoordinates != null)
    ? _encodePointList(textureCoordinates)
    : null;
  final Int32List encodedColors = colors != null
    ? _encodeColorList(colors)
    : null;
  final Int32List encodedIndices = indices != null
    ? new Int32List.fromList(indices)
    : null;

  _constructor();
  _init(mode.index, encodedPositions, encodedTextureCoordinates, encodedColors, encodedIndices);
}