使用INDEXSURFACE WKT標記法定義3D表面 - 雲資料庫 RDS

IndexSurface WKT表述時由類型關鍵字INDEXSURFACE、頂點座標關鍵字VERTEX以及索引關鍵字INDEX表示。

VERTEX點座標之間使用,進行分隔，維度之間使用空格進行分隔，面索引每個面使用()進行包括，索引間使用,進行分隔，形式為：

INDEXSURFACE(
  VERTEX(x1 y1 z1, x2 y2 z2, ....),
  INDEX(
            (i1,i2,i3,...),
        (j1,j2,j3,...),
        ....
     )
  )

樣本：

INDEXSURFACE(
  VERTEX(201755.424609375 241700.688720703 7025.00027160645,201755.424609375 241700.688720703 6774.9998336792,202255.431298828 241700.688720703 6774.9998336792,202255.431298828 241700.688720703 7025.00027160645,202255.431298828 243149.418896484 6774.9998336792,201755.424609375 243149.418896484 6774.9998336792,201755.424609375 243149.418896484 7025.00027160645,202255.431298828 243149.418896484 7025.00027160645),
   INDEX((0,1,2),(2,3,0),(4,5,6),(6,7,4),(2,1,5),(5,4,2),(3,2,7),(4,7,2),(0,3,7),(7,6,0),(1,0,5),(6,5,0)))

IndexSurface同樣支援Z和M維度資訊：

INDEXSURFACE M(
  VERTEX(201755.424609375 241700.688720703 7025.00027160645,201755.424609375 241700.688720703 6774.9998336792,202255.431298828 241700.688720703 6774.9998336792,202255.431298828 241700.688720703 7025.00027160645,202255.431298828 243149.418896484 6774.9998336792,201755.424609375 243149.418896484 6774.9998336792,201755.424609375 243149.418896484 7025.00027160645,202255.431298828 243149.418896484 7025.00027160645),
   INDEX((0,1,2),(2,3,0),(4,5,6),(6,7,4),(2,1,5),(5,4,2),(3,2,7),(4,7,2),(0,3,7),(7,6,0),(1,0,5),(6,5,0)))