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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | 1x 1x 1x 1x 1x 17x 16x 16x 5x 11x 11x 1x 10x 10x 2x 8x 37x 37x 8x 5x 1x | const joi = require('joi')
const esriExtentSchema = joi.object({
xmin: joi.number().required(),
xmax: joi.number().required(),
ymin: joi.number().required(),
ymax: joi.number().required(),
type: joi.string().optional(),
spatialReference: joi.object().keys({
wkid: joi.number().integer().optional(),
latestWkid: joi.number().integer().optional()
}).optional()
}).unknown()
const simpleArraySchema = joi.array().items(joi.number().required()).min(4)
const cornerArraySchema = joi.array().items(joi.array().items(joi.number()).length(2)).length(2)
module.exports = function (input, spatialReference) {
if (!input) return undefined
const { value: arrayExtent } = validate(input, simpleArraySchema)
if (arrayExtent) {
return simpleArrayToEsriExtent(arrayExtent, spatialReference)
}
const { value: cornerArrayExtent } = validate(input, cornerArraySchema)
if (cornerArrayExtent) {
return cornerArrayToEsriExtent(cornerArrayExtent, spatialReference)
}
const { value: esriExtent } = validate(input, esriExtentSchema)
if (esriExtent) {
return { spatialReference, ...esriExtent }
}
throw new Error(`Received invalid extent: ${JSON.stringify(input)}`)
}
function validate (input, schema) {
const { error, value } = schema.validate(input)
if (error) return { error }
return { value }
}
function simpleArrayToEsriExtent (arrayExent, spatialReference) {
return {
xmin: arrayExent[0],
ymin: arrayExent[1],
xmax: arrayExent[2],
ymax: arrayExent[3],
spatialReference
}
}
function cornerArrayToEsriExtent (cornerArrayExtent, spatialReference) {
return {
xmin: cornerArrayExtent[0][0],
ymin: cornerArrayExtent[0][1],
xmax: cornerArrayExtent[1][0],
ymax: cornerArrayExtent[1][1],
spatialReference
}
}
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