GLTFMaterialsClearcoatExtension constructor

GLTFMaterialsClearcoatExtension(GLTFParser parser)

Implementation

GLTFMaterialsClearcoatExtension(this.parser) {
  name = gltfExtensions["KHR_MATERIALS_CLEARCOAT"]!;
  getMaterialType = (materialIndex) {
    final parser = this.parser;
    final materialDef = parser.json["materials"][materialIndex];

    if (materialDef["extensions"] == null ||
        materialDef["extensions"]?[name] == false) return null;

    return MeshPhysicalMaterial;
  };

  extendMaterialParams = (int materialIndex, Map<String, dynamic> materialParams) async {
    final parser = this.parser;
    Map<String, dynamic> materialDef =
        parser.json["materials"][materialIndex];

    if (materialDef["extensions"] == null ||
        materialDef["extensions"][name] == null) {
      return null;
    }

    List<Future> pending = [];

    Map<String, dynamic> exten = materialDef["extensions"][name];

    if (exten["clearcoatFactor"] != null) {
      materialParams['clearcoat'] = exten["clearcoatFactor"];
    }

    if (exten["clearcoatTexture"] != null) {
      pending.add(parser.assignTexture(
          materialParams, 'clearcoatMap', exten["clearcoatTexture"]));
    }

    if (exten["clearcoatRoughnessFactor"] != null) {
      materialParams['clearcoatRoughness'] = exten["clearcoatRoughnessFactor"];
    }

    if (exten["clearcoatRoughnessTexture"] != null) {
      pending.add(parser.assignTexture(materialParams,
          'clearcoatRoughnessMap', exten["clearcoatRoughnessTexture"]));
    }

    if (exten["clearcoatNormalTexture"] != null) {
      pending.add(parser.assignTexture(materialParams, 'clearcoatNormalMap',
          exten["clearcoatNormalTexture"]));

      if (exten["clearcoatNormalTexture"]["scale"] != null) {
        final scale = exten["clearcoatNormalTexture"]["scale"];

        materialParams['clearcoatNormalScale'] = Vector2(scale, scale);
      }
    }

    return await Future.wait(pending);
  };
}