startMaterial method

Implementation

ParseStateMaterial startMaterial(String? name, libraries) {
  final ParseStateMaterial? previous = _finalize(false);

  // New usemtl declaration overwrites an inherited material, except if faces were declared
  // after the material, then it must be preserved for proper MultiMaterial continuation.
  if (previous != null && (previous.inherited || previous.groupCount <= 0)) {
    materials.removeAt(previous.index);
  }

  final material = ParseStateMaterial({
    "index": materials.length,
    "name": name ?? '',
    "mtllib": (libraries is List && libraries.isNotEmpty? libraries[libraries.length - 1]: ''),
    "smooth": (previous != null ? previous.smooth : smooth),
    "groupStart": (previous != null ? previous.groupEnd : 0),
    "groupEnd": -1,
    "groupCount": -1,
    "inherited": false
  });

  materials.add(material);

  return material;
}