Welcome to the fourth week of mixed and
augmented reality MOOC.
In the last two weeks, we exercised
the visual aspects of augmented reality.
The following two weeks,
we'll handle the geo-location.
At the end of this period,
you will have an AR application that
you can play outside in your courtyard,
in the campus of your school or
in the parking of your company.
As for the examples created last weeks,
we'll also do something
relatively simple, a geo-localised
quiz game that we called AR Quiz.
The AR Quiz is, first of all, a quiz.
The player has to answer to a set of
questions and the score depends
on the time for answering and
the correctness of the answers.
In this example, it is about
the famous cathedrals in Geneva.
It may happen that some
questions are difficult and
that the player has no idea
what the correct answer is.
In this case, some hints are displayed
to help finding the good answer,
like the description
provided in this example.
What is new in the case of AR Quiz,
compared with the classical Quiz,
is that the hints are geo-located
and they become visible to
the player only if he or
she goes at that specific position,
position that can be expressed as
a latitude and longitude on the map.
To localise the hints, two modalities
are possible in the game we'll create:
either using a 2D map with the hints
represented by small icons as shown in
this picture, either using the camera
view with the hints represented as
3D objects floating in the air
as shown in the second picture.
Same as for the augmented book
that you created last weeks,
we simplified also here your work and you
can obtain a fun game in few minutes.
For this, we shall use an authoring tool and
an AR browser.
The common point between the two
is again the ARAF format,
the format that you had
the opportunity to discover
when we created the augmented book.
The following two weeks we'll continue
our investigation of this format and
we'll detail the geo-location mechanism.
Let's have a look how
we'll spend this week.
Firstly, you have to watch
a video explaining step-by-step
how to use the authoring tool to
create an augmented reality quiz.
Then you have to choose
a subject of interest,
to imagine five questions
related to this subject and
the possible answers for each one.
You may even think about
representative images for
these answers that can help the player
in choosing the right answer.
You can use your own phone
to take these pictures.
Then you have to choose
an outside location near you.
Pay attention to choose places that
are accessible to pedestrians, like parks
and please avoid streets.
We want you to finish this MOOC and
not be injured by cars or bicycles.
You will use all the prepared content in
the authoring tool, export the result,
and load it on your Android phone.
Since your AR browser
is already installed,
you are able to load
the augmented quiz and play it.
In the second part of the week,
we'll have a closer look at the code
produced by the authoring tool.
But before going into
the AR Quiz source code,
we will learn you first what a prototype is.
We'll create a very simple one,
an image prototype
and you will see how this prototype
can be used inside an ARAF file.
Then we'll enrich this prototype
with additional functionalities,
like interaction.
When clicking on the image
an action will be triggered.
Finally, you will create a new ARAF file
where the functionality of the new
prototype will be demonstrated.
After this exercise,
you will be ready to learn how the map
service was implemented in ARAF.
For this, you will need to understand how
the map related prototypes were designed
and how they can be used in the ARAF scene.
Then we will spend almost the entire week
five in understanding the ARAF format for
AR Quiz, and
you will learn how to program it and
change the behaviour of the application.
Instead of dealing with static hints,
we'll transform them in motion hints and
we'll change the application
behaviour accordingly.
