Geoscience Reference
In-Depth Information
Fig. 9
Viewing modes of 3D spatial objects in our proposed 3D GIS implementation.
a
WireFrame.
b
HiddenLine.
c
Shaded.
d
Shaded with texture
3 Visualization of a 3D Building and a Network Model
Visualization of a 3D building model is performed by our own proposed Java
based 3D-GIS implementation. The implementation uses
citygml4j
Java class
library and API for facilitating work with the CityGML and JOGL Java bindings
for OpenGL graphic library to carry out visualization of 3D spatial objects.
The application supports 4 different types of a view mode for spatial objects.
These modes are WireFrame (Fig.
9
a), HiddenLine (Fig.
9
b), Shaded (Fig.
9
c) and
Shaded with Texture (Fig.
9
d).
The prepared implementation reads CityGML datasets from LOD0 to LOD2.
3D building models are represented in LOD2 described by polygons using
Building Module of CityGML (Fig.
10
). Network models are represented as linear
networks in LOD0 using CityGML's Transportation Module (Fig.
11
).
4 Intelligent Individual Evacuation Model
for Building Fires
Fire occurrences came into being with the discovery of fire and are closely related
to the evolution process of human being. Fire is also one of the most important
threat for the high rise complex buildings of today's world with thousands of
