EN/CityGML-Tutorial/chapter-2:-Building.md

@@ -26,24 +26,25 @@ LOD1 and LOD2 are the most common level of details produced by users globally an
 
 # **CityGML 2.0 Building Data Model**
 
-example: HFT (one building) (figure from Athanasios) ![image](uploads/d19828ed823eb14763b58d54cd8388e8/image.png)
+The building model defines the geometric and semantic properties of a building in CityGML. A building or a building part can be modeled as Solid (B-rep) or MultiSurface. The semantic objects for a BoundarySurface geometry in LOD2 are: RoofSurface, WallSurface, GroundSurface, and ClosureSurface. 
 
-link to open access data set of HFT campus
+CityGML also defines attributes for every city object. The standard defines two types of attributes: Schema attributes and generic attributes. Schema attributes are part of the schema definition of each thematic module.
 
-https://transfer.hft-stuttgart.de/gitlab/neqmodplus/neqmodplus-steinbeis/-/wikis/NeqModPlus/NeqModPlus/HfT_Campus_CityGML_2.0_Models
+The building schema defines the attributes: function, yearOfConstruction, yearOfDemolition, measuredHeight, storeysAboveGround etc. Generic attributes are defined by the user to store additional information in a city object. There is no restriction in the number or the names of the generic attributes as long as they conform to the XML syntactic rules.
 
 
 UML diagramm of Building Module
 
-one small citygml model (1 building) -> Model shall be stored in the Repository.
+![CityGML_Building_UML.drawio](uploads/0678970e14e0cd782aa7f0f867a3c0f9/CityGML_Building_UML.drawio.png)
 
-The building model defines the geometric and semantic properties of a building in CityGML. A building or a building part can be modeled as Solid (B-rep) or MultiSurface. The semantic objects for a BoundarySurface geometry in LOD2 are: RoofSurface, WallSurface, GroundSurface, and ClosureSurface.
+example: HFT (one building) (figure from Athanasios) ![image](uploads/d19828ed823eb14763b58d54cd8388e8/image.png)
 
-![CityGML-2](uploads/1d896b57e0343a215e1b404463334145/CityGML-2.png)
+link to open access data set of HFT campus
 
-CityGML also defines attributes for every city object. The standard defines two types of attributes: Schema attributes and generic attributes. Schema attributes are part of the schema definition of each thematic module.
+https://transfer.hft-stuttgart.de/gitlab/neqmodplus/neqmodplus-steinbeis/-/wikis/NeqModPlus/NeqModPlus/HfT_Campus_CityGML_2.0_Models
+
+![CityGML-2](uploads/1d896b57e0343a215e1b404463334145/CityGML-2.png)
 
-The building schema defines the attributes: function, yearOfConstruction, yearOfDemolition, measuredHeight, storeysAboveGround etc. Generic attributes are defined by the user to store additional information in a city object. There is no restriction in the number or the names of the generic attributes as long as they conform to the XML syntactic rules.
 
 # **New is CityGML 3.0 Building Data Model**