fiware developers week_bootcampwebui_presentation2

Bootcamp presentation3D-Cities towards AR

Talking about (Smart) Cities

Bootcamp presentationPOI Data Provider GE

Points of Interest - POI

bull A POI systembull Relates information to places

bull Supports searches by location and other criteria eg time

What does a POI Data Provider do

bull A POI data provider stores and provides information based on location

bull Searches based on area eg circle or bounding box

ndashFiltering of results using other

data values eg category or

tags

Why to use FIWARE POI Data Provider

bull FIWARE POI Data Provider uses modular and distributed data This allow you to

bull Combine your own data with public POI data

bull Speed up mobile operation by fetching only the data your application needs

bull Use your own data structures if need for extra flexibility

Using POI Information - Map

bull Show place information of selected categories like restaurant and other criteria like open times on the map

Using POI Information ndash Your own needs

bull Attach the information you need to the locations

bull Use or show the information as you need

bull Search information based on the location and the extra data you provided

Developing using FIWARE POI-DP GE

bull Development prerequisites

bull Modular and distributed data

bull Components in JSON format

bull Multilingual data items Default language in multilingual data

bull Spatial searches

bull Additional data retrieval

bull Creating Updating Deleting a new POI

Development prerequisites

bull Basic JavaScript knowledge

ndashEg from here httpwwww3schoolscomjs

bull To show maps you may use eg

ndashGoogle Maps API httpsdevelopersgooglecommaps

ndashOpenStreetMap httpwikiopenstreetmaporgwikiOpenLayers_Simple_Example

bull Detailed instructions

ndashhttpforgefi-wareorgpluginsmediawikiwikifiwareindexphpPOI_Data_Provider_-

_User_and_Programmers_Guide - later referred The Manual

Modular and Distributed Data

bull Modular data to avoid unnecessary data transmission by requesting only the data components you want

bull Data of a POI consists of components

fw_core fw_time fw_contact fw_media hellip

bull HTTP Request defines wanted data components

bull Different data components of the same POI may reside in different servers

bull Application specific proprietary data components can be used

Components in JSON Format

bull POI is identified by its UUIDbull

bull component is identified by its name

8e57d2e6-f98f-4404-b075-112049e72346

fw_core

ltlocation identity amp other core informationgt

fw_time

ltavailability timesgt

ltother requested componentsgt

Multilingual Data Items

bull Most texts and web links (URLs) are for several languages

ltdefault or language independent datagtltlang_ID1gt ltdata in language lang_ID1gtltlang_ID2gt ltdata in language lang_ID2gthellip

bull ISO 639-1 language code identify the language

label

Uniresta Lobby Restaurant at University of Oulu

fi Unirestan Aularavintola Oulun yliopistolla

en Uniresta Lobby Restaurant at University of Oulu

es Restaurante Aularavintola

Default language in Multilingual Data

bull No need to duplicate text for the default

bull A specific language can also be the default

_def ltlang_IDngt

hellipltlang_IDngt ltdefault data in language lang_IDngthellip

label

_def en

fi Unirestan Aularavintola Oulun yliopistolla

en Uniresta Lobby Restaurant at University of Oulu

es Restaurante Aularavintola

Spatial Searches

bull Example of radial search ndash GET request

ndashhttpltyour_poi_servergtradial_searchlat=6501255amplon=2547133ampra

dius=250ampcategory=caferestaurant

ndashgives restaurants and cafes in the center of Oulu Finland

bull Code snippets in JavaScript to send the request and to receive the results can be found in The Manual

bull Available categories are server dependent ndash values of OpenStreetMap Amenity-key are used in demo servers

bull See The Manual for bounding box search

Additional Data Retrieval

bull Example of extra information retrieval ndash GET request

ndashhttpltyour_poi_servergtget_poispoi_id=30ddf703-59f5-4448-8918-

0f625a7e1122ampcomponent=fw_media

ndashgives media links associated to the POI

bull Code snippets in JavaScript to send the request and to receive the results can be found in The Manual

Creating a New POI

bull Example of adding a new POI ndash POST request

ndashhttpltyour_poi_servergtadd_poi

ndashdata content is components of the POI in JSON format

ndashresponse is the UUID created for the POI

bull Code snippets in JavaScript to send the request and to receive the results can be found in The Manual

Updating POI Data

1 Retrieve POI data for update ndash GET request

ndashhttpltyour_poi_servergtget_poispoi_id=30ddf703-59f5-4448-8918-

0f625a7e1122ampget_for_update=true

ndashThis brings all language versions and last_update info

2 Modify the data as needed ndash retain the last_update info unchanged

3 Send updated data ndash POST request

ndashhttpltyour_poi_servergtupdate_poi

ndashdata content is the modified data in JSON format

ndashresponse tells success or not

ndashupdate fails if a conflict happens

Deleting a POI

bull Example of deleting a POI ndash DELETE request

ndashhttpltyour_poi_servergtdelete_poipoi_id=30ddf703-59f5-4448-8918-

0f625a7e1122

bull Code snippets in JavaScript to send the request and to receive the results can be found in The Manual

POIs in action

http13020680175poi-clientmaphtml

Want to overcome these(lame) 2D-maps

Bootcamp presentationGIS Data Provider GE

Rationale

Create infrastructure to be used with next generation web based 3D GIS serviceso Need for geographical system capable to provide data in 3D

form with correct geospatial information

GIS provider GE in nutshell

GE provides the infrastructure to query and obtain geo-referenced 3D models through RESTful Web Services

o Capability to provide 3D models of objects (eg buildings cars etc) and terrains with correct elevation information

RESTful Interface for communicationo Implemented interface fulfills mandatory part of the Open Geospatial

Consortiums (OGC) OpenGISreg Web 3D Service Interface Standard

GIS GE implemented as W3DS community module to Geoservero Module is extension to Geoservero Fully open sourced

Main features (12)

Supports data in XML3D and octet-stream output formats

Object query for specific layer based on bounding box returned contentndash XML3D presentation of the queried terrain or

ndash Separate XML3D object(s) inside bounding box

3D terrain texture support (Satellite images raster images etc)

Level Of Details (LOD) support for 3D terrainsndash Scale from 1 to 10

Main features (22)

Internal amp external data storage supportndash Data storage in geoserver (eg shapefiles images)ndash PostgreSQL + PostGIS

bullElevation data for terrainsbullObject geospatial information and reference to 3D presentation location

Current fiware release contains support for metric coordinate systems

bull Note GIS Data Provider GE does not implement tools for all possible data formats These information types are customer and source specificbull However GIS GE provides sample geodataset in EPSG3047

projection which is based on Finnish geographical Institute open data

Architecture

High level architecture and communication description of the GIS Data Provider GE

GIS Data Provider API Information

The following diagram describes the resources that can be accessed with the GIS Data Provider API starting from the server base URL

Representation Format XML3D

Request returns group of XML3D 3d-models and those can directly be added to DOM tree

All coordinate values inside XML3D object are relative values to requested bounding box

An example of XML3D output format request

httphostnameportpathSERVICE=W3DSampREQUEST=GetSceneampVE

RSION=040

ampCRS=EPSG26916ampFORMAT=modelxml3d+xml

ampBoundingBox=202759033101700213200033208960ampLAYERS=

Terrain

Query terrain with bounding box

http130206812388080gis_test_clientindexxhtml

Representation Format Octet-stream

Request returns byte array1 32bit integer with information how many points are in X-axis2 32bit integer with information how many points are in Y-axis3 32bit float with information about average distance between points

in X-axis4 32bit float with information about average distance between points

in Y-axis

After initialization values there is elevation information for each point in that grid

o First elevation value is from top right corner and last value is bottom left

corner Values are read from a grid one row at a time reading of each

row is started from right to left

Representation Format Octet-stream

An example of octet-stream output format requesthttphostnameportpathSERVICE=W3DSampREQUEST=GetSceneampVERSION=040

ampCRS=EPSG26916ampFORMAT=applicationoctet-stream

ampBoundingBox=202759033101700213200033208960ampLAYERS=Terrain

Obtaining texture to 3D model

It is possible to get terrain texture to 3D model Texture query is done to same bounding box as query for

elevation (terrain) data

Example

httphostnameportpathwmsservice=WMSampversion=110ampre