This is an introduction to mago3D, a web based open source GeoBIM platform developed by Gaia3D, Inc. This presentation was given at Geo Business event on 22nd, May. For details about mago3D, please visit http://mago3d.com

1. 1
A Brand-New Web Based Open Source GeoBIM Platform
Sanghee Shin
Gaia3D, Inc.
22nd May 2018

2. 2
3D GIS + BIM + AEC = ?
GeoBIM

3. 3
GeoBIM Platform

4. 4
From Standard,
GIS
CityGML
GeospatialInformation
GISStandards
IFC
BIM
OutdoorModel
IndoorModel
BIMStandards
Construction
DrawingsInfo.
In/Outdoor
GIModel
(GeospatialInformation
Model)

5. 5
From Industry,

6. 6
And From Open Source … mago3D

7. 7
Introduction – mago3D
mago3D is a platform for …
Visualizing massive and complex 3D objects including BIM
on a web browser
Visualizing massive and complex 3D objects including BIM
on a web browser
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of BIM/AEC and 3D GIS in a single spaceSeamless integration of BIM/AEC and 3D GIS in a single space2
Web based collaborative issue/process management4
‘Digital Twin’ that can create parallel worlds in a virtual reality
with numerous IoT, sensor data
3
= GIS + BIM + Open Source

8. 8
Introduction – Architecture of mago3D
mago3D.JS
Cesium/WWW
Client
internet
Web Server WAS
F4DStorage
mago
Content
Management
DataBase
F4D Converter
2 main cores of mago3D

9. 9
Introduction – Core parts of mago3D
F4D Converter mago3D.js
mago3D.js
3D GIS Engines
Cesium
WebWorldWind
API
API
service html
F4D Converter converts 3D formats(IFC, 3DS, OBJ, DAE, JT)
to 3D internet service format F4D. It carries out data size
reducing and pre-processing for fast rendering
A plug-in composed of pure javascript which enables 3D GIS
engines to handle large-sized and highly detailed AEC data
F4D Converter
F4D
.ifc
.3ds
.obj
.dae

10. Key technique : F4D, lightweight service format
 Model is 3D geometry info, while Reference is real instance of this model
10

11. with 4 geometric meshes - 4 models 23 objects are created. - 23 references
Image source : www.vecteezy.com
Key technique : F4D, lightweight service format
Example of Model-Reference
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12. Key technique : F4D, lightweight service format
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1. Build a triangular mesh based on the grid structure from the original three-dimensional data.

13. Key technique : F4D, lightweight service format
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1. Build a triangular mesh based on the grid structure from the original three-dimensional data.

14. Key technique : F4D, lightweight service format
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2. Triangle reduction (edge collapse)
Inner edge collapse frontier edge collapse

15. Key technique : F4D, lightweight service format
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2. Triangle reduction (edge collapse)

16. Key technique : F4D, lightweight service format
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17. Key technique : F4D, lightweight service format
These are made from original data by adjusting details.
15
LOD 0
(Original data)
LOD 2 LOD 3
LOD 4 LOD 5

18. Key technique : Culling for performance enhancement
Do not render things not necessarily to be shown.
before rotating a camera
around a target
during rotating after rotating
Do not render if not necessary.
16

19. Key technique : Culling for performance enhancement
visibility index
An index describing which inner objects
can be seen from selected positions in AEC.
This index is used in occlusion culling in
run-time visualization of mago3D.
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20. Key technique : Culling for performance enhancement
spatial index
An index describing which inner objects are
in cubes, spatial sub-divisions of AEC.
This index is used in frustum culling in
run-time visualization of mago3D.
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21. Key technique : Culling for performance enhancement
1. When a camera position and
2. the viewing direction of it are setup,
3. mago3D does frustum culling on spatial indices
4. and do occlusion culling on the result of the
frustum culling.
5. Finally mago3d finds targets to be rendered.
(intersection between two indices)
→ It possible to select targets to be rendered
without any complicated geometric operation in
run-time.
How to use both indices
19

22. 20
mago3D runs on any device
Accessible anytime, anywhere

23. BIM(Indoor/Outdoor) integration
Seamless integration of indoor and outdoor space
on the same platform
scene from indoor to outdoor through windows Scene from outdoor to indoor through windows
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24. MEP Integration
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Integration of large size MEP and 3D GIS on a web browser

25. AEC Integration
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Integration of large size AEC and 3D GIS on a web browser

26. Various API supported (OpenAPIs)
APIs are supported for developing application
systems(currently 29 APIs) moving/rotating
a full building
moving objects &
viewing attributes registration/monitoring/search of issues
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27. Cultural Heritage in Korea
• Cultural asset in Korea
25

28. Tunnel, Bridge in Japen
• Tunnel, Department store, Bridge, Overpass
offered by CUG (Civil User Group in Japan)
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29. Geospatial Context Matters!
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 mago3D can handle all the 3D objects in geospatial context

30. In future
30
A
mago3D
Cloud
B
mago3D
B
mago3D
JT
Obj
IFC
Collada3DS
Revit
To the
Digital Twin
Platform

31. Demo

32. Summary
Key Features
• BIM/AEC and 3D GIS integration in a single space
• Web based – no need to install additional program
• Massive and complex 3D objects rendering
• Open source – Apache and AGPL license
• Supports industry standard formats(ifc, 3ds, dae, kml, gltf…)
• In-Browser 3D objects moving/rotation/heading adjustment
• Highly extensible architecture
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33. For more information, please visit http://mago3d.com
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This project is funded by Ministry of Land, Infrastructure and Transport, Korea,
through R&D project(number:18NSIP-B080778-05)
Sanghee Shin shshin@gaia3d.com