public static IAttribute FindAttribute(this IG3D g3D, AttributeType attributeType, bool throwIfMissing = true)
{
var candidates = g3D.FindAttributes(attributeType).ToList();
if (candidates.Count > 1)
{
throw new Exception($"Multiple matching attributes of type {attributeType.AttributeTypeString()}");
}
if (candidates.Count == 0)
{
if (throwIfMissing)
{
throw new Exception($"No matching attributes of type {attributeType.AttributeTypeString()}");
}
return(null);
}
return(candidates[0]);
}
public static IEnumerable <IAttribute> FindAttributes(this IG3D g3D, AttributeType attributeType) => g3D.FindAttributes(desc => desc.AttributeType == attributeType);