Changes

===== <span id="BuildingPart/Geometry"> Geometry</span> =====

===== <span id="BuildingPart/Geometry"> Geometry</span> =====

'''''gml:Solid''''' see also [[Modeling Guide for 3D Objects - Part 1: Basics (Rules for Validating GML Geometries in CityGML)#gml:Solid|Modeling Guide for 3D Objects - Part 1]]

;'''''gml:Solid'''''  

:see also [[Modeling Guide for 3D Objects - Part 1: Basics (Rules for Validating GML Geometries in CityGML)#gml:Solid|Modeling Guide for 3D Objects - Part 1]]

It is recommended to use '''''gml:Solid''''' depending on the LoD in the following way :

:It is recommended to use '''''gml:Solid''''' depending on the LoD in the following way :

*In LoD1 a solid directly contains the bounding geometry ('''Figure A''')

:*In LoD1 a solid directly contains the bounding geometry ('''Figure A''')

*In LoD2 and LoD3 a solid contains external references (Xlinks) to the bounding geometry ([[#Wandflächen|wall surfaces]], [[#Dachflächen|roof surfaces]], [[#Grundflächen|ground surfaces]], [[#Äußere_Deckenflächen|outer ceiling surfaces]], [[#Äußere_Bodenflächen|outer bottom surfaces]] and  [[#Virtuelle_Begrenzungsflächen|closure surfaces]] as well as [[#Türen|doors]] and [[#Fenster|windows]]). '''In real nonexistent surfaces''' are modeled as closure surfaces ('''Figure B''').

:*In LoD2 and LoD3 a solid contains external references (Xlinks) to the bounding geometry ([[#Wandflächen|wall surfaces]], [[#Dachflächen|roof surfaces]], [[#Grundflächen|ground surfaces]], [[#Äußere_Deckenflächen|outer ceiling surfaces]], [[#Äußere_Bodenflächen|outer bottom surfaces]] and  [[#Virtuelle_Begrenzungsflächen|closure surfaces]] as well as [[#Türen|doors]] and [[#Fenster|windows]]). '''In real nonexistent surfaces''' are modeled as closure surfaces ('''Figure B''').

*In LoD2 a solid contains external references (Xlinks) to the real bounding geometry. '''In real nonexistent surfaces''' are modeled as closure surfaces and assigned directly to the building part ('''Figure C''').

:*In LoD2 a solid contains external references (Xlinks) to the real bounding geometry. '''In real nonexistent surfaces''' are modeled as closure surfaces and assigned directly to the building part ('''Figure C''').

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