A CalendarPeriod represents the abstract concept of a time period that has
a canonical start. Grammatically, "the start of the current
CalendarPeriod." All calendar times begin at midnight UTC.
Represents a color in the RGBA color space. This representation is designed
for simplicity of conversion to/from color representations in various
languages over compactness; for example, the fields of this representation
can be trivially provided to the constructor of "java.awt.Color" in Java; it
can also be trivially provided to UIColor's "+colorWithRed:green:blue:alpha"
method in iOS; and, with just a little work, it can be easily formatted into
a CSS "rgba()" string in JavaScript, as well.
Represents a whole or partial calendar date, e.g. a birthday. The time of day
and time zone are either specified elsewhere or are not significant. The date
is relative to the Proleptic Gregorian Calendar. This can represent:
An object representing a latitude/longitude pair. This is expressed as a pair
of doubles representing degrees latitude and degrees longitude. Unless
specified otherwise, this must conform to the
WGS84
standard. Values must be within normalized ranges.
Represents a postal address, e.g. for postal delivery or payments addresses.
Given a postal address, a postal service can deliver items to a premise, P.O.
Box or similar.
It is not intended to model geographical locations (roads, towns,
mountains).
A quaternion is defined as the quotient of two directed lines in a
three-dimensional space or equivalently as the quotient of two Euclidean
vectors (https://en.wikipedia.org/wiki/Quaternion).
Represents a time of day. The date and time zone are either not significant
or are specified elsewhere. An API may choose to allow leap seconds. Related
types are google.type.Date and google.protobuf.Timestamp.
