Junaio for developers – Adding 3D Components

Junaio for developers – Adding 3D Components

What is junaio?
Free mobile AR platform for iPhone and Android
Smartphones
Open API for developer to create and publish
channels
Location based informations and image recognition
No experience with mobile applications
programming needed
server side scripting and XML
Channels
3D components
Junaio GLUE channels
Location based channels

What is a channel?
Channels are a way of representing your specific
application within junaio.
Users can "tune into" your channel to see your
information or play your game.
What do you need to know to create your own
channel?
Some modeling if you want to
Some server-side programming
Some XML
No programming skills?
Use the Channel Creator (slide #18)
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Channel Use Cases
Channels can be anything, such as but not
limited to:
Game case
Cinema channel and movie program
Hotel reservations, train schedules
Ticketing service, theatre and concert guide,
museum guide
Theme park virtual tours
Restaurant and bar guides
Auctions, shopping
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Getting started
Become a developer and create
your own channel
Sign up to get an API key
Set up your server
(see Getting started)
Register a channel here
Test and submit your channel
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3D Model Examples
Position 3D models at locations and enrich the World.
“GLUE“ 3D information onto the object itself (see junaio GLUE)
Tag the World
Junaio GLUE
Trigger videos
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3D Components Outline
Requirements
Supported file formats
Create and convert your 3D Components
Specifications Overview
Place your 3D model in junaio
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Requirements
Requirements
Some modelling skills
3D Visualization program e.g. 3D Studio Max starting from version 9.0 or Blender
QTip MD2 exporter for 3D Studio Max (license can be purchased at
qtipplugin.com)
Download Blender export script for MD2s on junaio website
Blender
3D Studio Max
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Supported Model Formats
MD2
Wavefront Object (.obj)
Supports animated models with up to
2048 vertices per model
MD2 models cannot have different
colors but textures.
Exemplary model: 500 Vertices, 1000
Polygons and a total frame number of
200 (approx. 480 KB) of storage on
the mobile device.
The OBJ file format is a model format
for static meshes.
It supports multiple meshes with
different textures and materials.
Meshes can also have assigned
different materials to their polygons.
Use the OBJ format for high quality static objects
and rely on the MD2 format for animated models.
Download some example models from the junaio homepage
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3D Model Creation and Conversion
3D Studio Max
Create your model in 3d Studio Max
Prepare for export
Add texture to the model
Create a frame list file
Export model to MD2 / OBJ
Create your 3D model
See the specification of the metaio Unifeye mobile SDK for detailed information.
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3D Model Creation and Conversion
Blender
Model export from Blender
Texture Baking in Blender
Export to Wavefront OBJ / MD2
Add textures to your model
Export animations to MD2
Link: Blender export script for MD2s
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Export your model
See the specification of the metaio Unifeye mobile SDK for detailed information.

Model Sizes
For visualization on the mobile
phone it is important to verify
reasonable model sizes.
For 3D Studio Max the unit can be
set e.g. to millimeters or centimeters.
When exporting your model, make
sure to check the current unit settings.
For Blender the units for modeling are
usually millimeters.
To use OBJs within junaio, please zip
all files belonging to the model and
place the zipped archive in the
mainresource. The encrypted model
must be called model.obj_enc
Check the unit settings
Assume one unit to be approx.
1mm in real world
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Model Performance Improvements
Lighting
When using textures on models, try to bake the
lighting conditions into your textures and disable
lighting on your model afterwards.
Flat Shading
Activate Flat shading on your models.
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How to work with Movie Textures
Creating a channel with a movie texture is as
simple as creating any other junaio GLUE
channel.
The difference to any other 3D model is very low,
just keep in mind to convert the video files correctly
On junaio.com you will find ready prepared md2
models to play any of your movies with.
A video will be directly glued to a GLUE pattern
Links:
Movie texture Tutorial
How to convert my movie file to work with movie textures
Assets being helpful
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Specifications Overview
Low overall size due to network bandwidth
Maximum amount of vertices: up to approx. 1000
(recommended: 500) - the lower the better
Texture size (max 512x512 256x256
recommended) Only JPG file format supported
To use models within junaio, they have to be
encrypted. Use the Online Encrypter on the junaio
website.
Having encrypted your 3D model, you can
now enrich the world with your 3D model.
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Place your 3D model in junaio
Similar to placing image, video or sound POIs
you are able to position 3D models at locations
as well.
MD2 Model
model/md2
[public_url]/model.md2_enc
[public_url]/model_texture.[jpg/png]
obj Model
model/obj
// This zip file holds the model.obj_enc, the reference
material file plus the referenced texture
[public_url]/example_obj.zip
See the online documentation for further information
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3D Components Example XML
Additional tags are used, such as s for scale, force3d, customizations or
behaviors.
Following parameters control the display of your 3D model:
"
//3D file format: md2 or obj
[model/md2, model/obj]
http://myURLcom/my3Dmodel.md2_enc, /example_obj.zip
//force3d determines whether the 3D model will be rendered right away, or a default poi with a \"load 3D Model\" in
the description shall be shown
true
//Scale of the 3D component
1
//Behaviour (Animation)
//LENGTH: 0 for looping, amount of frames otherwise
0
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// NODE_ID: name of the animation in the 3D model
frame
…
";
See the parameter documentation

junaio Channel Creator
Create your own junaio channel
without any programming skills
- A simply and intuitive GUI will do
all the work
- You can create junaio GLUE
channels, supporting 3D models
and video trigger functionality
Add 3D components
- junaio Channel Creator
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Become a Certified Developer
Join the growing junaio ® developer
community
Create unique apps
Build a reputation in this expanding
market
You keep full control over your
application and your data
Junaio’s community provides
interesting business opportunities
You will be highly visible on our
recommended Developer Network
Our young and dedicated team is
providing advice
Certified Developers
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Benefits from junaio
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Making Money with junaio ®
Junaio ® is for free
You can sign on to the Certified
Developer Network free of charge
Users can enjoy charge free content
So where is there any money to be
earned?
Sell channels or content in the
channel
Location Based Advertisement in your
channel
Print advertising extended with
multimedia or 3D displays
Indoor Navigation as a Business
Opportunity

Who is behind junaio?
junaio ® was created by metaio GmbH
10 years research & development in
Augmented Reality
Locations: Munich, San Francisco,
Seoul
Marketing of AR solutions for industry,
business and end-users
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Related Links
Sign up at
http://www.junaio.com/publisher
Become a certified developer
http://www.junaio.com/publisher/certifieddeveloper
Documentation
http://www.junaio.com/publisher/main
Examples and Tutorials
http://www.junaio.com/publisher/examples
More Questions? Go to the Google Group for junaio
developers
http://groups.google.com/group/junaio-developer
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