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Table of Contents



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Object in the zone (queryType="zone")

figures/shape is a required parameter. It sets the zone the object to be within as the list of polygon apexes. Coordinates are set in fractions of frame width/height (values from 0 to 1). It allows not to be tied to specific camera resolution.

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Code Block
{
    "queryType": "zone",
    "figures": [
        {
            "shape": [
                [0.3, 0.3],
                [0.7, 0.3],
                [0.7, 0.7],
                [0.3, 0.7]
            ]
        }
    ],
    "queryProperties": {
        "action": "enter"
    }
}

Object transition from one zone to another (queryType="transition")

There is one required parameter − figures. It has to contain two zones describing start and end zones.

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 {
    "queryType": "transition",
    "figures": [
        {
            "shape": [
                [0, 0],
                [0.45, 0],
                [0.45, 1],
                [0, 1]
            ]
        },
        {
            "shape": [
                [0.55, 0],
                [1, 0],
                [1, 1],
                [0.55, 1]
            ]
        }
    ]
}

Line crossing (queryType="line")

Required parameter figures defines a segment crossing of which triggers the condition. The segment is to be set by two points.

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