FOSS4G 2013: Modelling 3D underground data in a webbased 3D-Client

19.09.13

Modelling 3D Underground Datain a webbased 3D-Client

Till Adams (terrestris GmbH & Co Kg)Emmanuel Belo (Camptocamp SA)

www.terrestris.de

16.07.20133D Data in a 2D & 3D WebGIS

We talk about....

Us first

What do we mean with „3D Underground Data“ … ?

2D WebGIS and 3D Data

Architecture and Setup 3D WebGIS and 3D Data

Preview on the System

Problems, Problems, Problems ....

Introduction

We talk about....

Us first

Introduction

Team of terrestris:

Geoinformatics since 2002Geoinformatics since 2002

13 people, mainly Geographers 13 people, mainly Geographers

and computer scientistsand computer scientists

Consulting, Projects, 100% OpenSourceConsulting, Projects, 100% OpenSource

Core development in OpenLayers, GeoExt and several own Core development in OpenLayers, GeoExt and several own projects, e.g. SHOGun, our Middlewareprojects, e.g. SHOGun, our Middleware

Partner of OpenGeo, OGC-Member, very active in german local Partner of OpenGeo, OGC-Member, very active in german local chapter of OsGeo (DACH)chapter of OsGeo (DACH)

Introduction

Till Adams

Geoinformatics since 1998 Shareholder of terrestrisProject-CoordinatorGeographer (know much but nothing really) FOSSGIS e.V. (DACH local chapter of OsGeo)

Introduction

We talk about....

Us first

3D Underground Data

Geological Data:

2D Geological Map

3D Underground Data

Geological Data:

2D Geological Map + Geological Drilling

3D Underground Data

Geological Data:

x,y,z,attribute

3D Underground Data

Geological Data:

2D Geological Map + Geological Profile

3D Underground Data

Geological Data:

3D Underground Data

Geological Data:

Brandenburg/Germany

3D Underground Data

Geological Data:

Brandenburg/Germany:

Top of Permian Layers

We talk about....

Us first

2D GIS and 3D Data

Presenting this Data:

Points

2D GIS and 3D Data

PointsLines

2D GIS and 3D Data

PointsLinesPolygons

2D GIS and 3D Data

PointsLinesPolys

WebGIS !

2D GIS and 3D Data

2D - WebGIS !

2D GIS and 3D Data

2D - WebGIS !

2D GIS and 3D Data

2D - WebGIS !

2D GIS and 3D Data

Put this Data into ….

…. PostGIS 2.0 !!

WKT imported toPostGIS

2D GIS and 3D Data

Put this Data into PostGIS

… enables us to request it!

3D Model data in GST(proprietary) exported

As WKT

Data1: ST_GeomFromEWKT()

Points (x,y,z)

Data2:

ST_AsX3d() Polyhedralsurface

2D GIS and 3D Data

ST_GeomFromEWKT():

Points(x,y,z,attribute)

Image from: http://www.gomatlab.de/flaeche-aus-punkten-erzeugen-t3607.html

2D GIS and 3D Data

Geological Data:

2D GIS and 3D Data

Geological Data:

2D GIS and 3D Data

ST_3DClosestPoint(geometry g1, geometry g2);

- strategy is known (max. 12 surfaces)

- defined max-distance (less surfaces possible)

- 1 query per surface

2D GIS and 3D Data

ST_3DClosestPoint(geometry g1, geometry g2);

We talk about....

Us first

2D GIS and 3D Data

Architecture and Setup

Architecture 2D Client

Geo-DB

Tomcat

WebGIS

We talk about....

Us first

3D GIS and 3D Data

WKT imported toPostGIS

Put this Data into PostGIS

… enables us to request it!

3D Model data in GST(proprietary) exported

As WKT

Data1: ST_GeomFromEWKT()

Points (x,y,z)

Data2:

ST_AsX3d() Polyhedralsurface

3D GIS and 3D Data

ST_AsX3d():

Polyhedralsurfaces

Surfaces!

Image from: http://eslab.bu.edu/publications/publications.php

Geological Data:

Top of Permian Layers

3D GIS and 3D Data

Geological Data:

Base of Tertiary Layers+ Top of Permian Layers

3D GIS and 3D Data

Geological Data:

We need s.th. Like this:

We talk about....

Us first

3D GIS and 3D Data

Geo-DB

Tomcat

WebGIS

Geo-DB

Tomcat

WebGIS

4„3D“

Architecture 2D Client 3D Client

X3Dom-Viewer

GeoServer X3DomW3DS

„GeoExt 3D“ combines ExtJS with X3Dom

- uses API on top of X3DOM

- uses ExtJS 4 elements such as Viewport, Panels, etc.X

„GeoExt 3D“ combines ExtJS with X3Dom

- API methods such as - setScaleZ(scale) - setLayerVisibility(layerID, visibility) - setLayerColor(layer, color) - getState(); // setState(state)

- Navigation with Mouse/Keys

WebGIS

W3DS Service:- data sent to client in X3D format- data rendered in the client

We talk about....

Us first

We talk about....

Us first

Problems, Problems, Problems

Problems we had to catch up ….

- … Performance - reduce data density

- enhance hardware - wait ….

- … W3DS is not officially supported by GeoServer, so had to use GeoServer UX

- … no API in X3Dom, so created one

Many thanks!

Many thanks for listening !!!

terrestris GmbH & Co. KG

Pützchens Chaussee 56

53227 Bonn

Germany

Dipl.-Geogr. Till Adams

Tel. +49 - 228 – 962 899 52

adams@terrestris.de

FOSS4G 2013: Modelling 3D underground data in a webbased 3D-Client

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