Nome
ST_AsX3D — Retorna uma geometria em X3D nó xml formato do elemento: ISO-IEC-19776-1.2-X3DEncodings-XML
Sinopse
text ST_AsX3D(geometry g1, integer maxdecimaldigits=15, integer options=0);
Descrição
Retorna uma geometria como um elemento nó formatado X3D xml http://www.web3d.org/standards/number/19776-1. Se maxdecimaldigits (precisão) não estiver especificada, então, leva para 15.
![[Nota]](../images/note.png)
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Existem vários motivos para traduzir as geometrias PostGIS para X3D já que os tipos de geometria X3D não mapeiam diretamente para os tipos de geometria do PostGIS e alguns tipos X3D mais novos, que podem ser os melhores mapeadores que estávamos evitando já que a maioria das ferramentas renderizadoras não suportam eles. Sinta-se livre para postar um comentário se você tiver ideias de como podemos permitir as pessoas a indicarem seus mapeamentos preferidos. Abaixo está como nós mapeamos os tipos 2D/3D do PostGIS para os tipos X3D, no momento |
The 'options' argument is a bitfield that denotes whether to represent coordinates with the X3D GeoCoordinates geospatial node and whether to flip the x/y axis. By default, ST_AsX3D outputs in database form (long,lat or X,Y), but the X3D default of lat/lon, y/x may be preferred.
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0: X/Y na ordem de banco de dados (ex: ling/lat = X,Y é a ordem padrão de banco de dados), valor padrão e coordenadas não-espaciais (somente coordenada tag antiga).
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1: Lançar X e Y. Se usado em conjunção com a opção de trocar a geocoordenada, então, a saída será "latitude_first" e as coordenadas serão lançadas também.
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2: Gera coordenadas no GeoSpatial GeoCoordinates. Esta opção lançará um erro se as geometrias não estiverem na WGS 84 long lat (srid: 4326). Este é o único tipo GeoCoordinate suportado. Refer to X3D specs specifying a spatial reference system.. Saída padrão será:
GeoCoordinate geoSystem='"GD" "WE" "longitude_first"'. If you prefer the X3D default ofGeoCoordinate geoSystem='"GD" "WE" "latitude_first"'use(2 + 1)=3
| Tipo PostGIS | Tipo 2D X3D | Tipo 3D X3D |
|---|---|---|
| LINESTRING | ainda não foi implementado - será PoliLinha2D | LineSet |
| MULTILINESTRING | ainda não foi implementado - será PoliLinha2D | IndexedLineSet |
| MULTIPONTO | Poliponto2D | PointSet |
| PONTO | gera as coordenadas delimitadas pelo espaço | gera as coordenadas delimitadas pelo espaço |
| (MULTI) POLÍGONO, SUPERFÍCIE POLIÉDRICA | Marcação X3D inválida | IndexedFaceSet (anéis interiores atualmente gerados como outro faceset) |
| TIN | TriangleSet2D (ainda não implementado) | IndexedTriangleSet |
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O suporte para geometrias 2D ainda não está completo. Os anéis interiores apenas desenhados como polígonos separados. Estamos trabalhando nisto. |
Lots of advancements happening in 3D space particularly with X3D Integration with HTML5
Existe uma ótima fonte de visualizador X3D que você pode usar para ver as geometrias renderizadas. Free Wrl http://freewrl.sourceforge.net/ binários para Mac, Linux, and Windows. Use FreeWRL_Launcher compactados para visualizar as geometrias.
Also check out PostGIS minimalist X3D viewer that utilizes this function and x3dDom html/js open source toolkit.
Disponibilidade: 2.0.0: ISO-IEC-19776-1.2-X3DEncodings-XML
Melhorias: 2.2.0: Suporte para GeoCoordinates e eixos (x/y, long/lat) lançando. Observe as opções para mais detalhes.
This function supports 3d and will not drop the z-index.
This function supports Polyhedral surfaces.
This function supports Triangles and Triangulated Irregular Network Surfaces (TIN).
Exemplos
Create a complete X3D document containing a cube that is viewable in FreeWRL and other X3D viewers.
Code
SELECT '<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 3.0//EN" "http://www.web3d.org/specifications/x3d-3.0.dtd">
<X3D>
<Scene>
<Transform>
<Shape>
<Appearance>
<Material emissiveColor=''0 0 1''/>
</Appearance
> ' ||
ST_AsX3D(ST_GeomFromEWKT('POLYHEDRALSURFACE( ((0 0 0, 0 0 1, 0 1 1, 0 1 0, 0 0 0)),
((0 0 0, 0 1 0, 1 1 0, 1 0 0, 0 0 0)), ((0 0 0, 1 0 0, 1 0 1, 0 0 1, 0 0 0)),
((1 1 0, 1 1 1, 1 0 1, 1 0 0, 1 1 0)),
((0 1 0, 0 1 1, 1 1 1, 1 1 0, 0 1 0)), ((0 0 1, 1 0 1, 1 1 1, 0 1 1, 0 0 1)) )')) ||
'</Shape>
</Transform>
</Scene>
</X3D
>' As x3ddoc;
Raster Outputs
x3ddoc
--------
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 3.0//EN" "http://www.web3d.org/specifications/x3d-3.0.dtd">
<X3D>
<Scene>
<Transform>
<Shape>
<Appearance>
<Material emissiveColor='0 0 1'/>
</Appearance>
<IndexedFaceSet coordIndex='0 1 2 3 -1 4 5 6 7 -1 8 9 10 11 -1 12 13 14 15 -1 16 17 18 19 -1 20 21 22 23'>
<Coordinate point='0 0 0 0 0 1 0 1 1 0 1 0 0 0 0 0 1 0 1 1 0 1 0 0 0 0 0 1 0 0 1 0 1 0 0 1 1 1 0 1 1 1 1 0 1 1 0 0 0 1 0 0 1 1 1 1 1 1 1 0 0 0 1 1 0 1 1 1 1 0 1 1' />
</IndexedFaceSet>
</Shape>
</Transform>
</Scene>
</X3D>
PostGIS buildings.
Copy and paste the output of this query to x3d scene viewer and click Show
Code
SELECT string_agg('<Shape
>' || ST_AsX3D(CG_Extrude(geom, 0,0, i*0.5)) ||
'<Appearance>
<Material diffuseColor="' || (0.01*i)::text || ' 0.8 0.2" specularColor="' || (0.05*i)::text || ' 0 0.5"/>
</Appearance>
</Shape
>', '')
FROM ST_Subdivide(ST_Letters('PostGIS'),20) WITH ORDINALITY AS f(geom,i);
The following preview shows the extruded geometry generated from a simplified version of the same source lettering. It is a geometry preview, not X3D markup; use the preceding ST_AsX3D query output in an X3D viewer to inspect the native X3D scene.
Code
SELECT
CG_Extrude(
ST_SimplifyPreserveTopology(ST_Letters('PostGIS'), 2),
0, 0, 10
) AS buildings;
Raster Outputs
GEOMETRYCOLLECTION Z (POLYHEDRALSURFACE Z (((42.6 39.2 0,36.3 24.5 0,17 20.3 0,17.9 0 0,0 0 0,0 73.8 0,27.3 73.6 0,36.3 70 0,41.8 61.6 0,42.6 39.2 0),(26.5 55.7 0,17 58.8 0,17 35.3 0,25.6 36.2 0,26.5 55.7 0)),((42.6 39.2 10,41.8 61.6 10,36.3 70 10,27.3 73.6 10,0 73.8 10,0 0 10,17.9 0 10,17 20.3 10,36.3 24.5 10,42.6 39.2 10),(26.5 55.7 10,25.6 36.2 10,17 35.3 10,17 58.8 10,26.5 55.7 10)),((42.6 39.2 0,42.6 39.2 10,36.3 24.5 10,36.3 24.5 0,42.6 39.2 0)),((36.3 24.5 0,36.3 24.5 10,17 20.3 10,17 20.3 0,36.3 24.5 0)),((17 20.3 0,17 20.3 10,17.9 0 10,17.9 0 0,17 20.3 0)),((17.9 0 0,17.9 0 10,0 0 10,0 0 0,17.9 0 0)),((0 0 0,0 0 10,0 73.8 10,0 73.8 0,0 0 0)),((0 73.8 0,0 73.8 10,27.3 73.6 10,27.3 73.6 0,0 73.8 0)),((27.3 73.6 0,27.3 73.6 10,36.3 70 10,36.3 70 0,27.3 73.6 0)),((36.3 70 0,36.3 70 10,41.8 61.6 10,41.8 61.6 0,36.3 70 0)),((41.8 61.6 0,41.8 61.6 10,42.6 39.2 10,42.6 39.2 0,41.8 61.6 0)),((26.5 55.7 0,26.5 55.7 10,17 58.8 10,17 58.8 0,26.5 55.7 0)),((17 58.8 0,17 58.8 10,17 35.3 10,17 35.3 0,17 58.8 0)),((17 35.3 0,17 35.3 10,25.6 36.2 10,25.6 36.2 0,17 35.3 0)),((25.6 36.2 0,25.6 36.2 10,26.5 55.7 10,26.5 55.7 0,25.6 36.2 0))),POLYHEDRALSURFACE Z (((69.01 58 0,84.51 52.5 0,89.71 39.9 0,87.81 9.7 0,81.71 2.9 0,71.31 -0.5 0,54.91 3.9 0,48.31 17.8 0,50.61 48.7 0,58.01 55.6 0,69.01 58 0),(73.91 38.9 0,69.11 42.6 0,64.21 38.9 0,64.21 18.9 0,68.91 15.2 0,73.91 18.9 0,73.91 38.9 0)),((69.01 58 10,58.01 55.6 10,50.61 48.7 10,48.31 17.8 10,54.91 3.9 10,71.31 -0.5 10,81.71 2.9 10,87.81 9.7 10,89.71 39.9 10,84.51 52.5 10,69.01 58 10),(73.91 38.9 10,73.91 18.9 10,68.91 15.2 10,64.21 18.9 10,64.21 38.9 10,69.11 42.6 10,73.91 38.9 10)),((69.01 58 0,69.01 58 10,84.51 52.5 10,84.51 52.5 0,69.01 58 0)),((84.51 52.5 0,84.51 52.5 10,89.71 39.9 10,89.71 39.9 0,84.51 52.5 0)),((89.71 39.9 0,89.71 39.9 10,87.81 9.7 10,87.81 9.7 0,89.71 39.9 0)),((87.81 9.7 0,87.81 9.7 10,81.71 2.9 10,81.71 2.9 0,87.81 9.7 0)),((81.71 2.9 0,81.71 2.9 10,71.31 -0.5 10,71.31 -0.5 0,81.71 2.9 0)),((71.31 -0.5 0,71.31 -0.5 10,54.91 3.9 10,54.91 3.9 0,71.31 -0.5 0)),((54.91 3.9 0,54.91 3.9 10,48.31 17.8 10,48.31 17.8 0,54.91 3.9 0)),((48.31 17.8 0,48.31 17.8 10,50.61 48.7 10,50.61 48.7 0,48.31 17.8 0)),((50.61 48.7 0,50.61 48.7 10,58.01 55.6 10,58.01 55.6 0,50.61 48.7 0)),((58.01 55.6 0,58.01 55.6 10,69.01 58 10,69.01 58 0,58.01 55.6 0)),((73.91 38.9 0,73.91 38.9 10,69.11 42.6 10,69.11 42.6 0,73.91 38.9 0)),((69.11 42.6 0,69.11 42.6 10,64.21 38.9 10,64.21 38.9 0,69.11 42.6 0)),((64.21 38.9 0,64.21 38.9 10,64.21 18.9 10,64.21 18.9 0,64.21 38.9 0)),((64.21 18.9 0,64.21 18.9 10,68.91 15.2 10,68.91 15.2 0,64.21 18.9 0)),((68.91 15.2 0,68.91 15.2 10,73.91 18.9 10,73.91 18.9 0,68.91 15.2 0)),((73.91 18.9 0,73.91 18.9 10,73.91 38.9 10,73.91 38.9 0,73.91 18.9 0))),POLYHEDRALSURFACE Z (((111.02 37.6 0,123.92 31.1 0,130.72 20.8 0,126.82 5.3 0,116.02 -0.3 0,94.02 3.7 0,98.82 18.9 0,112.52 15.3 0,115.02 17.6 0,98.72 29.6 0,96.12 45.4 0,100.52 53 0,107.32 57.1 0,128.92 54.7 0,122.72 39.9 0,112.02 42.1 0,111.02 37.6 0)),((111.02 37.6 10,112.02 42.1 10,122.72 39.9 10,128.92 54.7 10,107.32 57.1 10,100.52 53 10,96.12 45.4 10,98.72 29.6 10,115.02 17.6 10,112.52 15.3 10,98.82 18.9 10,94.02 3.7 10,116.02 -0.3 10,126.82 5.3 10,130.72 20.8 10,123.92 31.1 10,111.02 37.6 10)),((111.02 37.6 0,111.02 37.6 10,123.92 31.1 10,123.92 31.1 0,111.02 37.6 0)),((123.92 31.1 0,123.92 31.1 10,130.72 20.8 10,130.72 20.8 0,123.92 31.1 0)),((130.72 20.8 0,130.72 20.8 10,126.82 5.3 10,126.82 5.3 0,130.72 20.8 0)),((126.82 5.3 0,126.82 5.3 10,116.02 -0.3 10,116.02 -0.3 0,126.82 5.3 0)),((116.02 -0.3 0,116.02 -0.3 10,94.02 3.7 10,94.02 3.7 0,116.02 -0.3 0)),((94.02 3.7 0,94.02 3.7 10,98.82 18.9 10,98.82 18.9 0,94.02 3.7 0)),((98.82 18.9 0,98.82 18.9 10,112.52 15.3 10,112.52 15.3 0,98.82 18.9 0)),((112.52 15.3 0,112.52 15.3 10,115.02 17.6 10,115.02 17.6 0,112.52 15.3 0)),((115.02 17.6 0,115.02 17.6 10,98.72 29.6 10,98.72 29.6 0,115.02 17.6 0)),((98.72 29.6 0,98.72 29.6 10,96.12 45.4 10,96.12 45.4 0,98.72 29.6 0)),((96.12 45.4 0,96.12 45.4 10,100.52 53 10,100.52 53 0,96.12 45.4 0)),((100.52 53 0,100.52 53 10,107.32 57.1 10,107.32 57.1 0,100.52 53 0)),((107.32 57.1 0,107.32 57.1 10,128.92 54.7 10,128.92 54.7 0,107.32 57.1 0)),((128.92 54.7 0,128.92 54.7 10,122.72 39.9 10,122.72 39.9 0,128.92 54.7 0)),((122.72 39.9 0,122.72 39.9 10,112.02 42.1 10,112.02 42.1 0,122.72 39.9 0)),((112.02 42.1 0,112.02 42.1 10,111.02 37.6 10,111.02 37.6 0,112.02 42.1 0))),POLYHEDRALSURFACE Z (((156.82 17.7 0,167.02 16 0,167.02 -0.9 0,149.22 2 0,141.42 11.3 0,141.12 42.7 0,134.62 41.8 0,134.62 58.9 0,141.12 57.9 0,140.02 75.4 0,157.92 75.4 0,156.82 57.9 0,166.02 58.9 0,166.02 41.8 0,156.82 42.7 0,156.82 17.7 0)),((156.82 17.7 10,156.82 42.7 10,166.02 41.8 10,166.02 58.9 10,156.82 57.9 10,157.92 75.4 10,140.02 75.4 10,141.12 57.9 10,134.62 58.9 10,134.62 41.8 10,141.12 42.7 10,141.42 11.3 10,149.22 2 10,167.02 -0.9 10,167.02 16 10,156.82 17.7 10)),((156.82 17.7 0,156.82 17.7 10,167.02 16 10,167.02 16 0,156.82 17.7 0)),((167.02 16 0,167.02 16 10,167.02 -0.9 10,167.02 -0.9 0,167.02 16 0)),((167.02 -0.9 0,167.02 -0.9 10,149.22 2 10,149.22 2 0,167.02 -0.9 0)),((149.22 2 0,149.22 2 10,141.42 11.3 10,141.42 11.3 0,149.22 2 0)),((141.42 11.3 0,141.42 11.3 10,141.12 42.7 10,141.12 42.7 0,141.42 11.3 0)),((141.12 42.7 0,141.12 42.7 10,134.62 41.8 10,134.62 41.8 0,141.12 42.7 0)),((134.62 41.8 0,134.62 41.8 10,134.62 58.9 10,134.62 58.9 0,134.62 41.8 0)),((134.62 58.9 0,134.62 58.9 10,141.12 57.9 10,141.12 57.9 0,134.62 58.9 0)),((141.12 57.9 0,141.12 57.9 10,140.02 75.4 10,140.02 75.4 0,141.12 57.9 0)),((140.02 75.4 0,140.02 75.4 10,157.92 75.4 10,157.92 75.4 0,140.02 75.4 0)),((157.92 75.4 0,157.92 75.4 10,156.82 57.9 10,156.82 57.9 0,157.92 75.4 0)),((156.82 57.9 0,156.82 57.9 10,166.02 58.9 10,166.02 58.9 0,156.82 57.9 0)),((166.02 58.9 0,166.02 58.9 10,166.02 41.8 10,166.02 41.8 0,166.02 58.9 0)),((166.02 41.8 0,166.02 41.8 10,156.82 42.7 10,156.82 42.7 0,166.02 41.8 0)),((156.82 42.7 0,156.82 42.7 10,156.82 17.7 10,156.82 17.7 0,156.82 42.7 0))),POLYHEDRALSURFACE Z (((213.81 13.2 0,208.11 4.2 0,198.51 -0.3 0,184.21 0.9 0,174.91 8.8 0,172.61 57.4 0,175.21 66.1 0,180.91 71.6 0,209.81 74 0,209.81 58.4 0,189.11 56.8 0,188.61 18.7 0,193.81 14.8 0,199.11 16.5 0,199.11 32.2 0,193.41 32.2 0,193.41 46.4 0,213.81 46.4 0,213.81 13.2 0)),((213.81 13.2 10,213.81 46.4 10,193.41 46.4 10,193.41 32.2 10,199.11 32.2 10,199.11 16.5 10,193.81 14.8 10,188.61 18.7 10,189.11 56.8 10,209.81 58.4 10,209.81 74 10,180.91 71.6 10,175.21 66.1 10,172.61 57.4 10,174.91 8.8 10,184.21 0.9 10,198.51 -0.3 10,208.11 4.2 10,213.81 13.2 10)),((213.81 13.2 0,213.81 13.2 10,208.11 4.2 10,208.11 4.2 0,213.81 13.2 0)),((208.11 4.2 0,208.11 4.2 10,198.51 -0.3 10,198.51 -0.3 0,208.11 4.2 0)),((198.51 -0.3 0,198.51 -0.3 10,184.21 0.9 10,184.21 0.9 0,198.51 -0.3 0)),((184.21 0.9 0,184.21 0.9 10,174.91 8.8 10,174.91 8.8 0,184.21 0.9 0)),((174.91 8.8 0,174.91 8.8 10,172.61 57.4 10,172.61 57.4 0,174.91 8.8 0)),((172.61 57.4 0,172.61 57.4 10,175.21 66.1 10,175.21 66.1 0,172.61 57.4 0)),((175.21 66.1 0,175.21 66.1 10,180.91 71.6 10,180.91 71.6 0,175.21 66.1 0)),((180.91 71.6 0,180.91 71.6 10,209.81 74 10,209.81 74 0,180.91 71.6 0)),((209.81 74 0,209.81 74 10,209.81 58.4 10,209.81 58.4 0,209.81 74 0)),((209.81 58.4 0,209.81 58.4 10,189.11 56.8 10,189.11 56.8 0,209.81 58.4 0)),((189.11 56.8 0,189.11 56.8 10,188.61 18.7 10,188.61 18.7 0,189.11 56.8 0)),((188.61 18.7 0,188.61 18.7 10,193.81 14.8 10,193.81 14.8 0,188.61 18.7 0)),((193.81 14.8 0,193.81 14.8 10,199.11 16.5 10,199.11 16.5 0,193.81 14.8 0)),((199.11 16.5 0,199.11 16.5 10,199.11 32.2 10,199.11 32.2 0,199.11 16.5 0)),((199.11 32.2 0,199.11 32.2 10,193.41 32.2 10,193.41 32.2 0,199.11 32.2 0)),((193.41 32.2 0,193.41 32.2 10,193.41 46.4 10,193.41 46.4 0,193.41 32.2 0)),((193.41 46.4 0,193.41 46.4 10,213.81 46.4 10,213.81 46.4 0,193.41 46.4 0)),((213.81 46.4 0,213.81 46.4 10,213.81 13.2 10,213.81 13.2 0,213.81 46.4 0))),POLYHEDRALSURFACE Z (((235.82 72.9 0,236.82 0 0,218.52 0 0,218.52 73.8 0,235.82 72.9 0)),((235.82 72.9 10,218.52 73.8 10,218.52 0 10,236.82 0 10,235.82 72.9 10)),((235.82 72.9 0,235.82 72.9 10,236.82 0 10,236.82 0 0,235.82 72.9 0)),((236.82 0 0,236.82 0 10,218.52 0 10,218.52 0 0,236.82 0 0)),((218.52 0 0,218.52 0 10,218.52 73.8 10,218.52 73.8 0,218.52 0 0)),((218.52 73.8 0,218.52 73.8 10,235.82 72.9 10,235.82 72.9 0,218.52 73.8 0))),POLYHEDRALSURFACE Z (((258.33 49.5 0,279.93 34.6 0,283.43 25.9 0,282.53 15.4 0,277.93 6.8 0,270.73 1.6 0,252.33 0.5 0,241.53 4.9 0,246.43 20.6 0,260.73 16.4 0,266.23 18.7 0,267.43 23.2 0,245.63 39.4 0,242.03 48.6 0,242.83 59.6 0,247.53 67.3 0,257.53 73.2 0,280.43 70.8 0,275.23 56.4 0,264.53 58.3 0,258.73 55.1 0,258.33 49.5 0)),((258.33 49.5 10,258.73 55.1 10,264.53 58.3 10,275.23 56.4 10,280.43 70.8 10,257.53 73.2 10,247.53 67.3 10,242.83 59.6 10,242.03 48.6 10,245.63 39.4 10,267.43 23.2 10,266.23 18.7 10,260.73 16.4 10,246.43 20.6 10,241.53 4.9 10,252.33 0.5 10,270.73 1.6 10,277.93 6.8 10,282.53 15.4 10,283.43 25.9 10,279.93 34.6 10,258.33 49.5 10)),((258.33 49.5 0,258.33 49.5 10,279.93 34.6 10,279.93 34.6 0,258.33 49.5 0)),((279.93 34.6 0,279.93 34.6 10,283.43 25.9 10,283.43 25.9 0,279.93 34.6 0)),((283.43 25.9 0,283.43 25.9 10,282.53 15.4 10,282.53 15.4 0,283.43 25.9 0)),((282.53 15.4 0,282.53 15.4 10,277.93 6.8 10,277.93 6.8 0,282.53 15.4 0)),((277.93 6.8 0,277.93 6.8 10,270.73 1.6 10,270.73 1.6 0,277.93 6.8 0)),((270.73 1.6 0,270.73 1.6 10,252.33 0.5 10,252.33 0.5 0,270.73 1.6 0)),((252.33 0.5 0,252.33 0.5 10,241.53 4.9 10,241.53 4.9 0,252.33 0.5 0)),((241.53 4.9 0,241.53 4.9 10,246.43 20.6 10,246.43 20.6 0,241.53 4.9 0)),((246.43 20.6 0,246.43 20.6 10,260.73 16.4 10,260.73 16.4 0,246.43 20.6 0)),((260.73 16.4 0,260.73 16.4 10,266.23 18.7 10,266.23 18.7 0,260.73 16.4 0)),((266.23 18.7 0,266.23 18.7 10,267.43 23.2 10,267.43 23.2 0,266.23 18.7 0)),((267.43 23.2 0,267.43 23.2 10,245.63 39.4 10,245.63 39.4 0,267.43 23.2 0)),((245.63 39.4 0,245.63 39.4 10,242.03 48.6 10,242.03 48.6 0,245.63 39.4 0)),((242.03 48.6 0,242.03 48.6 10,242.83 59.6 10,242.83 59.6 0,242.03 48.6 0)),((242.83 59.6 0,242.83 59.6 10,247.53 67.3 10,247.53 67.3 0,242.83 59.6 0)),((247.53 67.3 0,247.53 67.3 10,257.53 73.2 10,257.53 73.2 0,247.53 67.3 0)),((257.53 73.2 0,257.53 73.2 10,280.43 70.8 10,280.43 70.8 0,257.53 73.2 0)),((280.43 70.8 0,280.43 70.8 10,275.23 56.4 10,275.23 56.4 0,280.43 70.8 0)),((275.23 56.4 0,275.23 56.4 10,264.53 58.3 10,264.53 58.3 0,275.23 56.4 0)),((264.53 58.3 0,264.53 58.3 10,258.73 55.1 10,258.73 55.1 0,264.53 58.3 0)),((258.73 55.1 0,258.73 55.1 10,258.33 49.5 10,258.33 49.5 0,258.73 55.1 0))))
Figure
An Octagon elevated 3 Units and decimal precision of 6.
Code
SELECT ST_AsX3D(ST_Translate(ST_Force3D(ST_Buffer(ST_Point(10,10),5, 'quad_segs=2')), 0,0,
3),
6) As x3dfrag;
Raster Outputs
x3dfrag -------- <IndexedFaceSet convex='false' coordIndex='0 1 2 3 4 5 6 7' ><Coordinate point='15 10 3 13.535534 6.464466 3 10 5 3 6.464466 6.464466 3 5 10 3 6.464466 13.535534 3 10 15 3 13.535534 13.535534 3 ' /></IndexedFaceSet>
TIN.
Code
SELECT ST_AsX3D(ST_GeomFromEWKT('TIN (((
0 0 0,
0 0 1,
0 1 0,
0 0 0
)), ((
0 0 0,
0 1 0,
1 1 0,
0 0 0
))
)')) As x3dfrag;
Raster Outputs
x3dfrag
--------
<IndexedTriangleSet index='0 1 2 3 4 5'
><Coordinate point='0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 1 1 0'/></IndexedTriangleSet>
Closed multilinestring (the boundary of a polygon with holes).
Code
SELECT ST_AsX3D(ST_GeomFromEWKT('MULTILINESTRING((20 0 10,16 -12 10,0 -16 10,-12 -12 10,-20 0 10,-12 16 10,0 24 10,16 16 10,20 0 10),
(12 0 10,8 8 10,0 12 10,-8 8 10,-8 0 10,-8 -4 10,0 -8 10,8 -4 10,12 0 10))')
) As x3dfrag;
Raster Outputs
x3dfrag
--------
<IndexedLineSet coordIndex='0 1 2 3 4 5 6 7 0 -1 8 9 10 11 12 13 14 15 8'>
<Coordinate point='20 0 10 16 -12 10 0 -16 10 -12 -12 10 -20 0 10 -12 16 10 0 24 10 16 16 10 12 0 10 8 8 10 0 12 10 -8 8 10 -8 0 10 -8 -4 10 0 -8 10 8 -4 10 ' />
</IndexedLineSet>