jsts
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A JavaScript library of spatial predicates and functions for processing geometry
83 lines (80 loc) • 3.05 kB
JavaScript
import hasInterface from '../../../../hasInterface.js'
import Coordinate from '../geom/Coordinate.js'
import NodedSegmentString from './NodedSegmentString.js'
import System from '../../../../java/lang/System.js'
import CoordinateArrays from '../geom/CoordinateArrays.js'
import ArrayList from '../../../../java/util/ArrayList.js'
import Collection from '../../../../java/util/Collection.js'
import Noder from './Noder.js'
export default class ScaledNoder {
constructor() {
ScaledNoder.constructor_.apply(this, arguments)
}
static constructor_() {
this._noder = null
this._scaleFactor = null
this._offsetX = null
this._offsetY = null
this._isScaled = false
if (arguments.length === 2) {
const noder = arguments[0], scaleFactor = arguments[1]
ScaledNoder.constructor_.call(this, noder, scaleFactor, 0, 0)
} else if (arguments.length === 4) {
const noder = arguments[0], scaleFactor = arguments[1], offsetX = arguments[2], offsetY = arguments[3]
this._noder = noder
this._scaleFactor = scaleFactor
this._isScaled = !this.isIntegerPrecision()
}
}
rescale() {
if (hasInterface(arguments[0], Collection)) {
const segStrings = arguments[0]
for (let i = segStrings.iterator(); i.hasNext(); ) {
const ss = i.next()
this.rescale(ss.getCoordinates())
}
} else if (arguments[0] instanceof Array) {
const pts = arguments[0]
for (let i = 0; i < pts.length; i++) {
pts[i].x = pts[i].x / this._scaleFactor + this._offsetX
pts[i].y = pts[i].y / this._scaleFactor + this._offsetY
}
if (pts.length === 2 && pts[0].equals2D(pts[1]))
System.out.println(pts)
}
}
scale() {
if (hasInterface(arguments[0], Collection)) {
const segStrings = arguments[0]
const nodedSegmentStrings = new ArrayList(segStrings.size())
for (let i = segStrings.iterator(); i.hasNext(); ) {
const ss = i.next()
nodedSegmentStrings.add(new NodedSegmentString(this.scale(ss.getCoordinates()), ss.getData()))
}
return nodedSegmentStrings
} else if (arguments[0] instanceof Array) {
const pts = arguments[0]
const roundPts = new Array(pts.length).fill(null)
for (let i = 0; i < pts.length; i++)
roundPts[i] = new Coordinate(Math.round((pts[i].x - this._offsetX) * this._scaleFactor), Math.round((pts[i].y - this._offsetY) * this._scaleFactor), pts[i].getZ())
const roundPtsNoDup = CoordinateArrays.removeRepeatedPoints(roundPts)
return roundPtsNoDup
}
}
isIntegerPrecision() {
return this._scaleFactor === 1.0
}
getNodedSubstrings() {
const splitSS = this._noder.getNodedSubstrings()
if (this._isScaled) this.rescale(splitSS)
return splitSS
}
computeNodes(inputSegStrings) {
let intSegStrings = inputSegStrings
if (this._isScaled) intSegStrings = this.scale(inputSegStrings)
this._noder.computeNodes(intSegStrings)
}
get interfaces_() {
return [Noder]
}
}