{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "title": "CityJSON geometric primitives schema v0.6",

  "Semantics": {
    "type": "object",
    "properties": {
      "type": { 
        "enum": [
          "RoofSurface", 
          "GroundSurface", 
          "WallSurface", 
          "ClosureSurface", 
          "OuterCeilingSurface", 
          "OuterFloorSurface", 
          "Window", 
          "Door", 
          "WaterSurface", 
          "WaterGroundSurface", 
          "WaterClosureSurface",
          "TrafficArea",
          "AuxiliaryTrafficArea"
        ] 
      }
    }
  },

  "Solid": {
    "type": "object",
    "properties": {
      "type": { "enum": ["Solid"] },
      "lod": {
        "type": "number",
        "minimum": 0.0,
        "maximum": 3.5
      },
      "boundaries": {
        "type": "array",
        "items": {
          "type": "array",
          "items": {
            "type": "array",
            "items": {
              "type": "array",
              "items": { "type": "integer" }
            }
          }
        }
      },
      "semantics": {
        "type": "object",
        "properties": {
          "surfaces": {
            "type": "array",
            "items": { "$ref": "#/Semantics" }
          },
          "values": {
            "type": ["array", "null"],
            "items": {
              "type": ["array", "null"],
              "items": {
                "type": ["integer", "null"]
              }
            }
          }
        },
        "required": ["surfaces", "values"]
      },
      "material": {
        "type": "object",
        "additionalProperties": {
          "type": "object",
          "properties": {
            "values": {
              "type": ["array", "null"],
              "items": {
                "type": ["array", "null"],
                "items": {"type": ["integer", "null"]}
              }
            },
            "value": { "type": "integer" }
          },
          "oneOf": [
            { "required": ["value"]  },
            { "required": ["values"] }
          ]
        }
      },
      "texture": {
        "type": "object",
        "additionalProperties": {
          "type": "object",
          "properties": {
            "values": {
            "type": "array",
              "items": {
                "type": "array",
                "items": {
                  "type": "array",
                  "items": {
                    "type": "array",
                    "items": { "type": ["integer", "null"] }
                  }
                }
              }
            }
          }
        }
      }
    },
    "required": ["type", "lod", "boundaries"]
  },

  "MultiSolid": {
    "type": "object",
    "properties": {
      "type": { "enum": ["MultiSolid"] },
      "lod": {
        "type": "number",
        "minimum": 0.0,
        "maximum": 3.5
      },
      "boundaries": {
        "type": "array",
        "items": {
          "type": "array",
          "items": {
            "type": "array",
            "items": {
              "type": "array",
              "items": {
                "type": "array",
                "items": {"type": "integer"}
              }
            }
          }
        }
      },
      "semantics": {
        "type": "object",
        "properties": {
          "surfaces": {
            "type": "array",
            "items": { "$ref": "#/Semantics" }
          },
          "values": {
            "type": ["array", "null"],
            "items": {
              "type": ["array", "null"],
              "items": {
                "type": ["array", "null"],
                "items": {
                  "type": ["integer", "null"]
                }
              }
            }
          }
        },
        "required": ["surfaces", "values"]
      },
      "material": {
        "type": "object",
        "additionalProperties": {
          "type": "object",
          "properties": {
            "values": {
              "type": ["array", "null"],
              "items": {
                "type": ["array", "null"],
                "items": {
                  "type": ["array", "null"],
                  "items": { "type": ["integer", "null"] }
                }
              }
            },
            "value": { "type": "integer" }
          },
          "oneOf": [
            { "required": ["value"]  },
            { "required": ["values"] }
          ]
        }
      },
      "texture": {
        "type": "object",
        "additionalProperties": {
          "type": "object",
          "properties": {
            "values": {
            "type": "array",
              "items": {
                "type": "array",
                "items": {
                  "type": "array",
                  "items": {
                    "type": "array",
                    "items": { 
                      "type": "array",
                      "items": { "type": ["integer", "null"] }
                    }
                  }
                }
              }
            }
          }
        }                
      }
    },
    "required": ["type", "lod", "boundaries"]
  },

  "CompositeSolid": {
    "type": "object",
    "properties": {
      "type": { "enum": ["CompositeSolid"] },
      "lod": {
        "type": "number",
        "minimum": 0.0,
        "maximum": 3.5
      },
      "boundaries": {
        "type": "array",
        "items": {
          "type": "array",
          "items": {
            "type": "array",
            "items": {
              "type": "array",
              "items": {
                "type": "array",
                "items": {"type": "integer"}
              }
            }
          }
        }
      },
      "semantics": {
        "type": "object",
        "properties": {
          "surfaces": {
            "type": "array",
            "items": { "$ref": "#/Semantics" }
          },
          "values": {
            "type": ["array", "null"],
            "items": {
              "type": ["array", "null"],
              "items": {
                "type": ["array", "null"],
                "items": {
                  "type": ["integer", "null"]
                }
              }
            }
          }
        },
        "required": ["surfaces", "values"]
      },
      "material": {
        "type": "object",
        "additionalProperties": {
          "type": "object",
          "properties": {
            "values": {
              "type": ["array", "null"],
              "items": {
                "type": ["array", "null"],
                "items": {
                  "type": ["array", "null"],
                  "items": { "type": ["integer", "null"] }
                }
              }
            },
            "value": { "type": "integer" }
          },
          "oneOf": [
            { "required": ["value"]  },
            { "required": ["values"] }
          ]
        }          
      },
      "texture": {
        "type": "object",
        "additionalProperties": {
          "type": "object",
          "properties": {
            "values": {
            "type": "array",
              "items": {
                "type": "array",
                "items": {
                  "type": "array",
                  "items": {
                    "type": "array",
                    "items": { 
                      "type": "array",
                      "items": { "type": ["integer", "null"] }
                    }
                  }
                }
              }
            }
          }
        }                
      }
    },        
    "required": ["type", "lod", "boundaries"]
  },

  "MultiSurface": {
    "type": "object",
    "properties": {
      "type": { "enum": ["MultiSurface"] },
      "lod": {
        "type": "number",
        "minimum": 0.0,
        "maximum": 3.5
      },
      "boundaries": {
        "type": "array",
        "items": {
          "type": "array",
          "items": {
            "type": "array",
              "items": { "type": "integer" }
          }
        }
      },
      "semantics": {
        "type": "object",
        "properties": {
          "surfaces": {
            "type": "array",
            "items": { "$ref": "#/Semantics" }
          },
          "values": {
            "type": ["array", "null"],
            "items": {
              "type": ["integer", "null"]
            }
          }
        },
        "required": ["surfaces", "values"]
      },
      "material": {
        "type": "object",
        "additionalProperties": {
          "type": "object",
          "properties": {
            "values": {
              "type": ["array", "null"],
              "items": { "type": ["integer", "null"] }
            },
            "value": { "type": "integer" }
          },
          "oneOf": [
            { "required": ["value"]  },
            { "required": ["values"] }
          ]
        }
      },
      "texture": {
        "type": "object",
        "additionalProperties": {
          "type": "object",
          "properties": {
            "values": {
            "type": "array",
              "items": {
                "type": "array",
                "items": {
                  "type": "array",
                  "items": { "type": ["integer", "null"] }
                }
              }
            }
          }
        }
      }
    },       
    "required": ["type", "lod", "boundaries"]
  },

  "CompositeSurface": {
    "type": "object",
    "properties": {
      "type": { "enum": ["CompositeSurface"] },
      "lod": {
        "type": "number",
        "minimum": 0.0,
        "maximum": 3.5
      },
      "boundaries": {
        "type": "array",
        "items": {
          "type": "array",
          "items": {
            "type": "array",
              "items": { "type": "integer" }
          }
        }
      },
      "semantics": {
        "type": "object",
        "properties": {
          "surfaces": {
            "type": "array",
            "items": { "$ref": "#/Semantics" }
          },
          "values": {
            "type": ["array", "null"],
            "items": {
              "type": ["integer", "null"]
            }
          }
        },
        "required": ["surfaces", "values"]
      },
      "material": {
        "type": "object",
        "additionalProperties": {
          "type": "object",
          "properties": {
            "values": {
              "type": ["array", "null"],
              "items": { "type": ["integer", "null"] }
            },
            "value": { "type": "integer" }
          },
          "oneOf": [
            {
              "required": ["value"]
            },
            {
              "required": ["values"]
            }
          ]
        }
      },
      "texture": {
        "type": "object",
        "additionalProperties": {
          "type": "object",
          "properties": {
            "values": {
            "type": "array",
              "items": {
                "type": "array",
                "items": {
                  "type": "array",
                  "items": { "type": ["integer", "null"] }
                }
              }
            }
          }
        }
      }        
    },        
    "required": ["type", "lod", "boundaries"]
  },

  "MultiLineString": {
    "type": "object",
    "properties": {
      "type": { "enum": ["MultiLineString"] },
      "lod": {
        "type": "number",
        "minimum": 0.0,
        "maximum": 3.5
      },
      "boundaries": {
        "type": "array",
        "items": {
          "type": "array",
          "items": {"type": "integer"}
        }
      }
    },        
    "required": ["type", "lod", "boundaries"]
  },

  "MultiPoint": {
    "type": "object",
    "properties": {
      "type": { "enum": ["MultiPoint"] },
      "lod": {
        "type": "number",
        "minimum": 0.0,
        "maximum": 3.5
      },
      "boundaries": {
         "type": "array",
         "items": {"type": "integer"}
      }
    },
    "required": ["type", "lod", "boundaries"]
  }

}