{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://enterlocus.com/schemas/view-celestial-v2.schema.json",
  "title": "Package v2 Destination celestial profile v2",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "backgroundPanorama",
    "dayTexture",
    "elevationDegrees",
    "rotationPeriodSeconds",
    "version",
    "yawDegrees"
  ],
  "properties": {
    "version": {
      "const": 2
    },
    "backgroundPanorama": {
      "type": "string",
      "minLength": 1,
      "maxLength": 512,
      "pattern": "^(?!/)(?!.*(?:^|/)\\.\\.(?:/|$)).+\\.(?:[jJ][pP][eE]?[gG]|[pP][nN][gG])$"
    },
    "dayTexture": {
      "type": "string",
      "minLength": 1,
      "maxLength": 512,
      "pattern": "^(?!/)(?!.*(?:^|/)\\.\\.(?:/|$)).+\\.(?:[jJ][pP][eE]?[gG]|[pP][nN][gG])$"
    },
    "nightTexture": {
      "type": "string",
      "minLength": 1,
      "maxLength": 512,
      "pattern": "^(?!/)(?!.*(?:^|/)\\.\\.(?:/|$)).+\\.(?:[jJ][pP][eE]?[gG]|[pP][nN][gG])$"
    },
    "cloudTexture": {
      "type": "string",
      "minLength": 1,
      "maxLength": 512,
      "pattern": "^(?!/)(?!.*(?:^|/)\\.\\.(?:/|$)).+\\.(?:[jJ][pP][eE]?[gG]|[pP][nN][gG])$"
    },
    "yawDegrees": {
      "type": "number",
      "minimum": -360,
      "maximum": 360
    },
    "elevationDegrees": {
      "type": "number",
      "minimum": -90,
      "maximum": 90
    },
    "angularDiameterDegrees": {
      "type": "number",
      "minimum": 1,
      "maximum": 60
    },
    "rotationPeriodSeconds": {
      "type": "number",
      "minimum": 120,
      "maximum": 86400
    },
    "axialTiltDegrees": {
      "type": "number",
      "minimum": -180,
      "maximum": 180
    },
    "initialRotationDegrees": {
      "type": "number",
      "minimum": -360,
      "maximum": 360
    },
    "sunAzimuthDegrees": {
      "type": "number",
      "minimum": -360,
      "maximum": 360
    },
    "sunElevationDegrees": {
      "type": "number",
      "minimum": -90,
      "maximum": 90
    },
    "nightGain": {
      "type": "number",
      "minimum": 0,
      "maximum": 2
    },
    "atmosphereStrength": {
      "type": "number",
      "minimum": 0,
      "maximum": 1
    },
    "atmosphereColor": {
      "type": "array",
      "minItems": 3,
      "maxItems": 3,
      "items": {
        "type": "number",
        "minimum": 0,
        "maximum": 1
      }
    },
    "distanceMeters": {
      "type": "number",
      "minimum": 400,
      "maximum": 800
    },
    "radiusMeters": {
      "type": "number",
      "minimum": 1,
      "maximum": 400
    },
    "cloudHeightRatio": {
      "type": "number",
      "minimum": 0,
      "maximum": 0.03
    },
    "cloudDriftRatio": {
      "type": "number",
      "minimum": 0.5,
      "maximum": 2
    },
    "cloudShadowStrength": {
      "type": "number",
      "minimum": 0,
      "maximum": 1
    },
    "cloudEvolution": {
      "type": "number",
      "minimum": 0,
      "maximum": 1
    },
    "cloudEvolutionPeriodSeconds": {
      "type": "number",
      "minimum": 60,
      "maximum": 3600
    },
    "sunDisc": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "skyMask"
      ],
      "properties": {
        "enabled": {
          "type": "boolean",
          "default": true
        },
        "skyMask": {
          "type": "string",
          "minLength": 1,
          "maxLength": 512,
          "pattern": "^(?!/)(?!.*\\\\)(?!.*(?:^|/)\\.\\.?(/|$)).+\\.(?:[pP][nN][gG])$"
        },
        "angularSizeDegrees": {
          "type": "number",
          "minimum": 0.001,
          "maximum": 5,
          "default": 0.53
        },
        "intensity": {
          "type": "number",
          "minimum": 0,
          "maximum": 20,
          "default": 1
        },
        "color": {
          "type": "array",
          "minItems": 3,
          "maxItems": 3,
          "items": {
            "type": "number",
            "minimum": 0,
            "maximum": 1
          }
        }
      }
    },
    "advection": {
      "type": "object",
      "additionalProperties": false,
      "description": "Day texture advected along a baked steady flow (minimum App 1.3.2). Excludes nightTexture, cloudTexture and cloud-shell fields. See https://enterlocus.com/reference/locus-asset-format/#celestial-advection-gas-giant-flow.",
      "required": [
        "version",
        "flowTexture",
        "ageKeyframes",
        "maxAgeRotations",
        "displacementRangeDegrees",
        "regenerationRotations",
        "crossfade"
      ],
      "properties": {
        "version": {
          "const": 1
        },
        "flowTexture": {
          "type": "string",
          "pattern": "\\.[Pp][Nn][Gg]$",
          "description": "16-bit RGB PNG: ageKeyframes+1 stacked 2:1 tiles, 64-1024 wide."
        },
        "ageKeyframes": {
          "type": "integer",
          "minimum": 2,
          "maximum": 16
        },
        "maxAgeRotations": {
          "type": "number",
          "minimum": 0.05,
          "maximum": 4,
          "description": "Age of the last tile; at least (0.5 + crossfade) * regenerationRotations."
        },
        "displacementRangeDegrees": {
          "type": "number",
          "minimum": 1,
          "maximum": 90
        },
        "regenerationRotations": {
          "type": "number",
          "minimum": 0.1,
          "maximum": 4
        },
        "crossfade": {
          "type": "number",
          "minimum": 0.05,
          "maximum": 0.45
        }
      }
    },
    "polarRadiusRatio": {
      "type": "number",
      "minimum": 0.85,
      "maximum": 1,
      "description": "Polar over equatorial radius of an oblate spheroid about the local spin axis (minimum App 1.3.4); omitted means 1. Size fields keep describing the equatorial radius. See https://enterlocus.com/reference/locus-asset-format/#oblate-bodies-and-rings."
    },
    "rings": {
      "type": "object",
      "additionalProperties": false,
      "description": "One flat annulus in the body's equatorial plane (minimum App 1.3.4). Radii are multiples of the equatorial radius; also require innerRadiusRatio + 0.05 <= outerRadiusRatio. See https://enterlocus.com/reference/locus-asset-format/#oblate-bodies-and-rings.",
      "required": [
        "version",
        "profileTexture",
        "innerRadiusRatio",
        "outerRadiusRatio"
      ],
      "properties": {
        "version": {
          "const": 1
        },
        "profileTexture": {
          "type": "string",
          "minLength": 1,
          "maxLength": 512,
          "pattern": "^(?!/)(?!.*(?:^|/)\\.\\.(?:/|$)).+\\.[pP][nN][gG]$",
          "description": "8-bit RGBA PNG (colour type 6), exactly 1 pixel tall and 64-8192 wide: sRGB colour and straight normal-incidence opacity from the inner (left) to the outer (right) radius."
        },
        "innerRadiusRatio": {
          "type": "number",
          "minimum": 1.05,
          "maximum": 3.95
        },
        "outerRadiusRatio": {
          "type": "number",
          "minimum": 1.1,
          "maximum": 4
        },
        "brightness": {
          "type": "number",
          "minimum": 0,
          "maximum": 4,
          "description": "Ring radiance multiplier; default 1."
        },
        "unlitBrightness": {
          "type": "number",
          "minimum": 0,
          "maximum": 2,
          "description": "Unlit-face radiance multiplier for the particles' unknown phase function; default 1."
        }
      }
    }
  },
  "oneOf": [
    {
      "required": [
        "angularDiameterDegrees"
      ],
      "not": {
        "required": [
          "radiusMeters"
        ]
      }
    },
    {
      "required": [
        "distanceMeters",
        "radiusMeters"
      ],
      "not": {
        "required": [
          "angularDiameterDegrees"
        ]
      }
    }
  ],
  "description": "Additionally require radius <= distance/2 and distance+radius <=1100m, enforced by Swift/Python semantic validation. Any of cloudHeightRatio, cloudDriftRatio, cloudShadowStrength, cloudEvolution or cloudEvolutionPeriodSeconds raises the package's required minimumAppVersion to 1.3.0; omitted/zero cloudHeightRatio keeps the prior flat cloud compositing unchanged. polarRadiusRatio or rings raises minimumAppVersion to 1.3.4; polarRadiusRatio excludes the cloud-shell fields, rings excludes nightTexture, cloudTexture, the cloud-shell fields and advection, and the ring's outer edge must stay within 200-1100m of the View origin (Swift/Python semantic validation)."
}