Function checkLine

JMap.Geometry.checkLine

Throw an error if the provided parameter is not a valid polygon.

Example

let line = [[ 10, 10 ], [ 11, 11 ], [ 12, 12 ]]
// The following instruction will not throw an error
JMap.Geometry.checkLine(line)

line = [] // empty line
// The following instruction will throw an error
JMap.Geometry.checkLine(line)
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