import map from 'lodash-es/map.js'
import size from 'lodash-es/size.js'
import isEqual from 'lodash-es/isEqual.js'
import dropRight from 'lodash-es/dropRight.js'
import isearr from 'wsemi/src/isearr.mjs'
import toMultiPolygon from './toMultiPolygon.mjs'
/**
* 修復MultiPolygon內各RingString為非閉合
*
* Unit Test: {@link https://github.com/yuda-lyu/w-gis/blob/master/test/fixNoCloseMultiPolygon.test.mjs Github}
* @memberOf w-gis
* @param {Array} pgs 輸入Polygon資料陣列,為[ [[x11,y11],[x12,y12],...], [[x21,y21],[x22,y22],...] ]Polygon構成之陣列
* @param {Object} [opt={}] 輸入設定物件,預設{}
* @param {String} [opt.supposeType='polygons'] 輸入提取模式字串,當數據座標深度為2時,使用polygons代表每個其內多邊形為獨立polygon,若為ringStrings則表示其內多邊形為交錯的ringString(代表聯集與剔除),預設'polygons'
* @returns {Array} 回傳形心座標陣列
* @example
*
* let pgs
* let r
*
* pgs = [ //ringString
* [0, 0],
* [100, 0],
* [100, 1],
* [0, 1],
* [0, 0], //閉合
* ]
* r = fixNoCloseMultiPolygon(pgs)
* console.log(JSON.stringify(r))
* // => [[[[0,0],[100,0],[100,1],[0,1]]]]
*
* pgs = [ //ringString
* [0, 0],
* [100, 0],
* [100, 1],
* [0, 1],
* ]
* r = fixNoCloseMultiPolygon(pgs)
* console.log(JSON.stringify(r))
* // => [[[[0,0],[100,0],[100,1],[0,1]]]]
*
* pgs = [ //polygon
* [
* [0, 0],
* [100, 0],
* [100, 1],
* [0, 1],
* ]
* ]
* r = fixNoCloseMultiPolygon(pgs)
* console.log(JSON.stringify(r))
* // => [[[[0,0],[100,0],[100,1],[0,1]]]]
*
* pgs = [ //polygon
* [
* [0, 0],
* [10, 0],
* [10, 1],
* [0, 1],
* ]
* ]
* r = fixNoCloseMultiPolygon(pgs)
* console.log(JSON.stringify(r))
* // => [[[[0,0],[10,0],[10,1],[0,1]]]]
*
* pgs = [ //polygon
* [
* [0, 0],
* [100, 0],
* [100, 1],
* [0, 1],
* ],
* [
* [0, 0],
* [10, 0],
* [10, 1],
* [0, 1],
* ]
* ]
* r = fixNoCloseMultiPolygon(pgs) //預設polygon轉multiPolygon使用視為polygons, 故其內會是2個polygons
* console.log(JSON.stringify(r))
* // => [[[[0,0],[100,0],[100,1],[0,1]]],[[[0,0],[10,0],[10,1],[0,1]]]]
*
* pgs = [ //polygon
* [
* [0, 0],
* [100, 0],
* [100, 1],
* [0, 1],
* [0, 0],
* ],
* [
* [0, 0],
* [10, 0],
* [10, 1],
* [0, 1],
* ]
* ]
* r = fixNoCloseMultiPolygon(pgs, { supposeType: 'ringStrings' }) //polygon轉multiPolygon使用ringStrings
* console.log(JSON.stringify(r))
* // => [[[[0,0],[100,0],[100,1],[0,1]],[[0,0],[10,0],[10,1],[0,1]]]]
*
* pgs = [ //multiPolygon
* [
* [
* [0, 0],
* [100, 0],
* [100, 1],
* [0, 1],
* ],
* [
* [0, 0],
* [10, 0],
* [10, 1],
* [0, 1],
* [0, 0],
* ]
* ]
* ]
* r = fixNoCloseMultiPolygon(pgs)
* console.log(JSON.stringify(r))
* // => [[[[0,0],[100,0],[100,1],[0,1]],[[0,0],[10,0],[10,1],[0,1]]]]
*
*/
function fixNoCloseMultiPolygon(pgs, opt = {}) {
//check
if (!isearr(pgs)) {
return null
}
//toMultiPolygon
pgs = toMultiPolygon(pgs, opt)
//修復成為閉合, turf的centroid得要輸入閉合RingString
pgs = map(pgs, (pg) => {
pg = map(pg, (rs) => {
let i0 = 0
let i1 = size(rs) - 1
let rs0 = rs[i0]
let rs1 = rs[i1]
if (isEqual(rs0, rs1)) {
rs = dropRight(rs)
}
return rs
})
return pg
})
return pgs
}
export default fixNoCloseMultiPolygon