{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://venuemind.dev/schemas/spatial-geometry.schema.json",
  "title": "VenueMind Spatial Geometry",
  "type": "object",
  "required": [
    "schemaVersion",
    "unit",
    "units",
    "layers",
    "coordinateSystem",
    "precision",
    "roomBoundary",
    "fingerprint"
  ],
  "properties": {
    "schemaVersion": {
      "const": 1
    },
    "unit": {
      "const": "m"
    },
    "units": {
      "type": "object",
      "required": [
        "length",
        "area",
        "angle",
        "time"
      ],
      "properties": {
        "length": {
          "const": "m"
        },
        "area": {
          "const": "m2"
        },
        "angle": {
          "const": "deg"
        },
        "time": {
          "const": "s"
        }
      },
      "additionalProperties": false
    },
    "layers": {
      "type": "array",
      "prefixItems": [
        {
          "const": "architecture"
        },
        {
          "const": "furniture"
        },
        {
          "const": "access"
        },
        {
          "const": "production"
        },
        {
          "const": "catering"
        },
        {
          "const": "safety"
        },
        {
          "const": "annotations"
        }
      ],
      "minItems": 7,
      "maxItems": 7
    },
    "coordinateSystem": {
      "type": "object",
      "required": [
        "origin",
        "xAxis",
        "yAxis",
        "rotationDirection"
      ],
      "properties": {
        "origin": {
          "const": "southwest"
        },
        "xAxis": {
          "const": "east"
        },
        "yAxis": {
          "const": "north"
        },
        "rotationDirection": {
          "const": "clockwise"
        }
      },
      "additionalProperties": false
    },
    "precision": {
      "type": "object",
      "required": [
        "distance",
        "angle"
      ],
      "properties": {
        "distance": {
          "const": 3
        },
        "angle": {
          "const": 1
        }
      },
      "additionalProperties": false
    },
    "roomBoundary": {
      "type": "object",
      "required": [
        "outer",
        "holes"
      ],
      "properties": {
        "outer": {
          "type": "array",
          "minItems": 3,
          "items": {
            "type": "object",
            "required": [
              "x",
              "y"
            ],
            "properties": {
              "x": {
                "type": "number"
              },
              "y": {
                "type": "number"
              }
            },
            "additionalProperties": false
          }
        },
        "holes": {
          "type": "array",
          "items": {
            "type": "array",
            "minItems": 3,
            "items": {
              "type": "object",
              "required": [
                "x",
                "y"
              ],
              "properties": {
                "x": {
                  "type": "number"
                },
                "y": {
                  "type": "number"
                }
              },
              "additionalProperties": false
            }
          }
        }
      },
      "additionalProperties": false
    },
    "fingerprint": {
      "type": "string",
      "pattern": "^geom-[0-9a-f]{8}$"
    }
  },
  "$defs": {
    "point": {
      "type": "object",
      "required": [
        "x",
        "y"
      ],
      "properties": {
        "x": {
          "type": "number"
        },
        "y": {
          "type": "number"
        }
      },
      "additionalProperties": false
    },
    "footprint": {
      "oneOf": [
        {
          "type": "object",
          "required": [
            "kind",
            "center",
            "width",
            "depth",
            "rotationDegrees"
          ],
          "properties": {
            "kind": {
              "const": "rectangle"
            },
            "center": {
              "type": "object",
              "required": [
                "x",
                "y"
              ],
              "properties": {
                "x": {
                  "type": "number"
                },
                "y": {
                  "type": "number"
                }
              },
              "additionalProperties": false
            },
            "width": {
              "type": "number",
              "exclusiveMinimum": 0
            },
            "depth": {
              "type": "number",
              "exclusiveMinimum": 0
            },
            "rotationDegrees": {
              "type": "number",
              "minimum": 0,
              "exclusiveMaximum": 360
            }
          },
          "additionalProperties": false
        },
        {
          "type": "object",
          "required": [
            "kind",
            "center",
            "radius"
          ],
          "properties": {
            "kind": {
              "const": "circle"
            },
            "center": {
              "type": "object",
              "required": [
                "x",
                "y"
              ],
              "properties": {
                "x": {
                  "type": "number"
                },
                "y": {
                  "type": "number"
                }
              },
              "additionalProperties": false
            },
            "radius": {
              "type": "number",
              "exclusiveMinimum": 0
            }
          },
          "additionalProperties": false
        },
        {
          "type": "object",
          "required": [
            "kind",
            "start",
            "end",
            "width"
          ],
          "properties": {
            "kind": {
              "const": "line"
            },
            "start": {
              "type": "object",
              "required": [
                "x",
                "y"
              ],
              "properties": {
                "x": {
                  "type": "number"
                },
                "y": {
                  "type": "number"
                }
              },
              "additionalProperties": false
            },
            "end": {
              "type": "object",
              "required": [
                "x",
                "y"
              ],
              "properties": {
                "x": {
                  "type": "number"
                },
                "y": {
                  "type": "number"
                }
              },
              "additionalProperties": false
            },
            "width": {
              "type": "number",
              "exclusiveMinimum": 0
            }
          },
          "additionalProperties": false
        },
        {
          "type": "object",
          "required": [
            "kind",
            "points",
            "rotationDegrees"
          ],
          "properties": {
            "kind": {
              "const": "polygon"
            },
            "points": {
              "type": "array",
              "minItems": 3,
              "items": {
                "type": "object",
                "required": [
                  "x",
                  "y"
                ],
                "properties": {
                  "x": {
                    "type": "number"
                  },
                  "y": {
                    "type": "number"
                  }
                },
                "additionalProperties": false
              }
            },
            "rotationDegrees": {
              "type": "number",
              "minimum": 0,
              "exclusiveMaximum": 360
            }
          },
          "additionalProperties": false
        }
      ]
    }
  },
  "additionalProperties": false
}