863 lines
26 KiB
JavaScript
863 lines
26 KiB
JavaScript
import { MapObjectScatter } from './scatter.js'
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import { DeepZoomImage, DeepZoomInfo } from '../deepzoom/image.js'
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import { MapData, DeepZoomMapData } from './mapdata.js'
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import { Points } from '../../utils.js'
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import { EventHandler } from './utils.js'
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import Mercator from './projections/mercator.js'
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/**
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* The GeoMap class displays a map, that it gets from MapData object.
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* It handles the current location on the map, the zoom factor, interactions and
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* the viewport, the area of the map, the user can see and navigate to.
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*
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* You should not instantiate GeoMap on it's own. Use the implemented child classes
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* or derive a new one from it.
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*
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* Note: The name Map is already in use. Therefore GeoMap was used instead.
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*
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* @abstract
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* @class
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* @see {@link maps.html}
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*/
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export class GeoMap {
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/**
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* Creates instance of GeoMap
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*
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* @constructor
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* @param {MapData}[mapdata={}] - The mapdata describes how the map has to be interpreted by the Map class. E.g. what are the boundaries of the map?
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* @param {object}[opts={}] - With the opts, the created MapObjectScatter can be adjusted.
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* @param {boolean}[opts.cover=false] - Enables covering behaviour of a map object. Normally maps should cover the whole app.
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*/
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constructor(
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mapdata = {},
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{
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debug = true,
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cover = true,
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// Scatter Options
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alpha = 1,
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startScale = 1,
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minScale = 0,
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maxScale = Infinity,
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translatable = true,
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scalable = true,
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rotatable = false, // Many functionalities are not supported when rotating the map. Mainly the cover mechanism.
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viewport = mapdata.maxViewport,
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// Events
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onLoad = null,
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onTransform = null
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} = {}
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) {
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this._id = GeoMap.counter++
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this.onLoad = new EventHandler('loaded', { listeners: onLoad })
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this.onTransform = new EventHandler('transform', { listeners: onTransform })
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this._alpha = alpha
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this.cover = cover
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this.debug = debug
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//TODO discuss if this is required here.
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// Those are just scatter options and the information
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// is redundant in the map class and the scatter.
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this.startScale = startScale
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this.minScale = minScale
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this.maxScale = maxScale
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this.rotatable = rotatable
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this.translatable = translatable
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this.scalable = scalable
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this.viewport = viewport
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this.mapdata = mapdata
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this.overlays = {}
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/**
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* Adjust the viewport depending on the mapdata clipping.
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*/
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if (this.mapdata.clip) {
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const vp = this.viewport
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const cp = this.mapdata.clip
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let bounds = {
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min: {
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x: vp.min.x > cp.min.x ? vp.min.x : cp.min.x,
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y: vp.min.y > cp.min.y ? vp.min.y : cp.min.y
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},
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max: {
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x: vp.max.x < cp.max.x ? vp.max.x : cp.max.x,
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y: vp.max.y < cp.max.y ? vp.max.y : cp.max.y
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}
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}
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this.viewport = bounds
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}
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}
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flushHandlers() {
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this.onLoad.empty()
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this.onTransform.empty()
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}
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/**
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* Locks all transformations on the map.
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* Single parameters can be set if necessary. False means the value is locked, true means they can be modified.
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*
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* @public
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* @param {object} [{ rotatable = false, translatable = false, movableX = false, movableY = false, scalable = false }={}]
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* @memberof GeoMap
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*/
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lock({ rotatable = false, translatable = false, movableX = false, movableY = false, scalable = false } = {}) {
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if (this.image && this.image.scatter) {
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this.image.scatter.translatable = rotatable
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this.image.scatter.movableX = translatable
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this.image.scatter.movableY = movableX
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this.image.scatter.rotatable = movableY
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this.image.scatter.scalable = scalable
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}
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}
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/**
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* Unlocks all transformations on the map.
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* Single parameters can be set if necessary. False means the value is locked, true means they can be modified.
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*
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* @public
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* @param {object} [{ rotatable = false, translatable = false, movableX = false, movableY = false, scalable = false }={}]
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* @memberof GeoMap
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*/
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unlock({ rotatable = true, translatable = true, movableX = true, movableY = true, scalable = true } = {}) {
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this.lock({ rotatable, translatable, movableX, movableY, scalable })
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}
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/**
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* Unloads the image of the map.
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*
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* @public
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* @memberof GeoMap
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*/
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unload() {
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if (this.image) {
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if (this.image.parent) {
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this.image.parent.removeChild(this.image)
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}
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if (this.scatter) {
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this.scatter.killAnimation()
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this.image.scatter = null
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}
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}
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}
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/**
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* Removes the map, freeing all memory ba flushing handlers and removing the image.
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*
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* @public
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* @memberof GeoMap
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*/
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remove() {
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if (this.image) this.image.mask = null
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this.removeFrame()
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this.onTransform.empty()
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this.onLoad.empty()
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this.unload()
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}
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/**
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* Is called when the scatter object is transformed.
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*
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* @private
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* @param {ScatterEvent}[e] - Contains informations on how the element was transformed.
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*/
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transformed(e) {
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this.onTransform.call(this, e)
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}
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/**
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* Wrapps the display object around a scatter object.
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*
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* @private
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* @param {DisplayObject} displayObject - Defines the display object that will be wrapped inside the scatter object.
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* @param {PIXI.Container} container - Defines the frame in which the map will be displayed.
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*/
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load(image, renderer, frame = null, scatter = null) {
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if (this.debug) console.log('Load image: ', image, frame)
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this.image = image
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if (frame) this.setFrame(frame)
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let scatterOpts = Object.assign({
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cover: this.cover,
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scaleable: this.scaleable,
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translatable: this.translatable,
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rotatable: this.rotatable,
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debug: this.debug,
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startScale: this.startScale,
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minScale: this.minScale,
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maxScale: this.maxScale,
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onTransform: this.transformed.bind(this)
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})
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this.scatter = new MapObjectScatter(image, renderer, scatterOpts)
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this.image.scatter = scatter == null ? this.scatter : scatter
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this.onLoad.call(this)
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}
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/**
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* Creates an identical copy of the current map.
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*/
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clone() {
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console.error('Method clone() is abstract. Overload it in subclass', this)
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}
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/**
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*
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* Moves the 'camera' to another location on the map.
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*
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* @abstract
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* @param {object} coordinates - Target coordinates in form {x: latitude, y: longitude}
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* @param {number} scale - Target scale.
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*/
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moveTo(coordinates, zoom = null, { animate = false } = {}) {
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console.error(this, 'The method moveTo(coordinates, zoom, opts) has not been defined in child class.')
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}
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zoomTo(zoomFactor) {
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console.error('Method zoomTo() is abstract. Overload it in subclass', this, zoomFactor)
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}
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/**
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* Reloads the textures of the image, when it was unloaded and is required again.
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*
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* @memberof GeoMap
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*/
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reloadImage() {
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console.error(`Call of abstract method reloadImage(). Overwrite in subclass.`, this)
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}
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/**
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* Unloads the textures of the image, when not in use.
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*
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* @memberof GeoMap
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*/
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unloadImage() {
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console.error(`Call of abstract method unloadImage(). Overwrite in subclass.`, this)
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}
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/**
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* Transforms a point at pixel position {x,y}
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* to a coordinate with latitude and longitude.
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*
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*
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* @param {object} point - Point in form of {x, y}.
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* @returns {object} - Coordinates on the map in form of {x: latitude, y: longitude}.
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*/
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coordinatesFromPoint(point) {
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let coords = this.mapdata.toCoordinates(this.toRelativePosition(point))
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return coords
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}
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/**
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* Transform coordinates in the map into pixel positions on the deep zoom image.
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*
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* @param {object} coords - Coordinates of a map position in form {x: latitude, y: longitude}.
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* @return {Point} - Returns a image position in form of {x: x, y: y}.
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*/
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coordinatesToPoint(coordinates) {
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return this.toAbsolutePixelCoordinates(this.mapdata.toPixel(coordinates))
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}
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toRelativePosition(point) {
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let _point = new PIXI.Point()
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_point.x = point.x / this.width
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_point.y = point.y / this.height
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return _point
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}
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toAbsolutePixelCoordinates(point) {
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let _point = new PIXI.Point()
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_point.x = point.x * this.width
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_point.y = point.y * this.height
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return _point
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}
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get width() {
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return this.image.scatter.width / this.image.scatter.scale
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}
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get height() {
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return this.image.scatter.height / this.image.scatter.scale
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}
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get distance() {
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console.error('Overload get distance in subclass.')
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}
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get alpha() {
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return this._alpha
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}
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/**
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* Returns a screen point for a coordinate.
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*/
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positionInWindow(coordinates) {
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let pos = this.coordinatesToPoint(coordinates)
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let framePos = {
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x: this.image.position.x + pos.x * this.image.scale.x,
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y: this.image.position.y + pos.y * this.image.scale.y
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}
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return framePos
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}
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/**
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* Returns the coordinates for a screen point.
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*/
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coordinatesInWindow(point) {
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let mapPos = {
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x: (point.x - this.image.position.x) / this.image.scale.x,
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y: (point.y - this.image.position.y) / this.image.scale.y
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}
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let coords = this.coordinatesFromPoint(mapPos)
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return coords
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}
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removeFrame() {
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this.frame = null
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}
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setFrame(frame) {
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if (this.debug) console.log('Set Frame: ', frame)
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this.frame = frame
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}
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/**
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* Frame is the display in which the map is shown.
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* Normally it's the app, but it can be another element,
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* for example when in a submap.
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*/
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getFrame() {
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let frame = {
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x: 0,
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y: 0,
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width: 0,
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height: 0
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}
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if (this.frame) {
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//The app does not have an x and y attribute.
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//Therefore we need the additional check.
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frame = {
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x: this.frame.x ? this.frame.x : 0,
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y: this.frame.y ? this.frame.y : 0,
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width: this.frame.width,
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height: this.frame.height
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}
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} else if (this.image.parent) {
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let parent = this.image.parent
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for (let key of Object.keys(frame)) {
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frame[key] = parent[key]
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}
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}
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frame.localCenter = {
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x: frame.width / 2,
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y: frame.height / 2
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}
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frame.center = {
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x: frame.x + frame.localCenter.x,
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y: frame.y + frame.localCenter.y
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}
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return frame
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}
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/**
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* Retrieves all maps from a json object.
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*
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* @static
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* @param {object} json - The parsed map data object.
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* @returns {object} - Returns an object with the names as keys and the GeoMaps as value.
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* @memberof GeoMap
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*/
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static allFromJson(json, root = './') {
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let error = { message: '' }
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let maps = {}
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if (GeoMap._validateJson(json, error)) {
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for (let [mapname, data] of Object.entries(json)) {
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data.tiles.path = root + data.tiles.path
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maps[mapname] = GeoMap._createMap(data)
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maps[mapname].name = mapname
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}
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} else console.error('Could not validate JSON: ' + error.message)
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return maps
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}
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/**
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*Extracts a single map from a JSON map file.
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*
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* @static
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* @param {string} map - Name of the map.
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* @param {object} json - Parsed json object.
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* @returns {GeoMap} - Returns a geomap, if the map was in the data and valid. Otherwise false.
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* @memberof GeoMap
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*/
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static mapFromJson(map, json) {
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if (json[map]) {
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const data = json[map]
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if (this._validJsonMap(data)) return GeoMap._createMap(data)
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else console.error('Map was not in a valid format.')
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} else console.error('Map was not in data.')
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return null
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}
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/**
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* Validates if the map data contains valid data
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* for creating the maps.
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*
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* @static
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* @param {object} json - The object containing multiple map data sets.
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* @param {error-object} error - An object that contains an parameter message: {message = ""}. This is faking a call by reference.
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* @returns {boolean} - True if all sets were valid. False otherwise.
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* @memberof GeoMap
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*/
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static _validateJson(json, error) {
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let isValid = true
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if (Object.keys(json).length == 0) {
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isValid = false
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error.message += 'The provided JSON object did not contain any items.'
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}
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for (let [name, data] of Object.entries(json)) {
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if (!GeoMap._validJsonMap(data)) {
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error.message += `${name} was not valid. `
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isValid = false
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}
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}
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if (error.message != '') error.message = 'Maps could not be validated: ' + error.message
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return isValid
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}
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static changePathsInJson(json, path) {
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for (let key of Object.keys(json)) {
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json[key].icon = path + json[key].icon
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json[key].tiles.path = path + json[key].tiles.path
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}
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}
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/**
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*Validates of a single data set contains the valid data for creating a map.
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*
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* @static
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* @param {object} json - The object containing a single set of map data.
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* @returns {boolean} - True if valid, otherwise false.
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* @memberof GeoMap
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*/
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static _validJsonMap(json) {
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let isJsonValid = true
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const required = ['projection', 'type', 'icon']
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for (const requirement of Object.values(required)) {
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if (!json.hasOwnProperty(requirement)) {
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isJsonValid = false
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break
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}
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}
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if (isJsonValid && json.type.toLowerCase() == 'deepzoom') {
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if (!json.hasOwnProperty('tiles')) isJsonValid = false
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}
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return isJsonValid
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}
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static _createMap(data) {
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switch (data.type.toLowerCase()) {
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case 'deepzoom':
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return GeoMap._createDeepZoomMap(data)
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default:
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console.error(`Datatype is invalid or not implemented yet: ${data.type}`)
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}
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}
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static _createDeepZoomMap(data) {
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const projection = GeoMap._getProjectionByName(data.projection)
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const tilesConfig = data.tiles
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const options = data.options
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const mapdata = new DeepZoomMapData(projection, tilesConfig)
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return new DeepZoomMap(mapdata, tilesConfig, options)
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}
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static _getProjectionByName(projection) {
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switch (projection.toLowerCase()) {
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case 'mercator':
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return new Mercator()
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default:
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console.error(`Projection is invalid or not implemented yet ${projection}.`)
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return null
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}
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}
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}
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GeoMap.counter = 0
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/**
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* The DeepZoomMap class extends the GeoMap to create
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* maps as deepzoom images from maptiles.
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*
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* @extends GeoMap
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* @class
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* @see {@link maps.html}
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*/
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export class DeepZoomMap extends GeoMap {
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/**
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* @constructor
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* @param {object} tilesConfig - The tiles config object, that defines at what path and in which format the tiles are.
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* @param {MapData} mapdata - A MapData object, that contains informations of how the given map has to be interpreted.
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* @param {object} opts - Additional options to specify the behaviour of the deep zoom image.
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*/
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constructor(mapdata, tilesConfig, opts = {}) {
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opts = Object.assign(
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{
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maxScale: Math.min(tilesConfig.width, tilesConfig.height) / tilesConfig.tileSize,
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minScale: mapdata.getMinScale,
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highResolution: true,
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debug: false
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},
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opts
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)
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super(mapdata, opts)
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this.tilesConfig = tilesConfig
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this._verifyMapdata()
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}
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_verifyMapdata() {
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if (!(this.mapdata instanceof MapData)) {
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console.error('Use the MapData object for creating maps!')
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} else {
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if (!(this.mapdata instanceof DeepZoomMapData)) {
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console.error('Use the DeepZoomMapData object.')
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}
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}
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}
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/**
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* Creates the DeepZoomImage.
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*
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* @private
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*/
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load(container = null, scatter = null) {
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if (!this.mapdata.app) console.error('App was not set in the mapdata.')
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this.info = new DeepZoomInfo(this.tilesConfig)
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let image = new DeepZoomImage(this.info, {
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app: this.mapdata.app,
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alpha: this.alpha,
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debug: this.debug,
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world: scatter == null ? scatter : scatter.getWorldScatter()
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})
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super.load(image, container, scatter)
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if (this.debug) console.log('Loaded image: ', image, 'With options: ', this.info)
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}
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unloadImage() {
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if (this.image) {
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this.image.deactivate()
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}
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}
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reloadImage() {
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this.image.activate()
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}
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/**
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* Event function that is invoked by the deep zoom image, when it has been transformed.
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*
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* @private
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* @param {ScatterEvent} e
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*/
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transformed(e) {
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this.image.transformed(e)
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super.transformed(e)
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}
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|
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/**
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* Jumps to a certain point on the map and adjusts the size of the
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* map depending on the distance (zoom).
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*
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*
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* @param {*} coordinates
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* @param {*} [zoom=null]
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* @param {*} [{ animate = 0 }={}]
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* @memberof DeepZoomMap
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*/
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moveTo(coordinates, zoom = null, { animate = 0 } = {}) {
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if (this.image.scatter == null) {
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return
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}
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//TODO: This is jaggy on submaps. Make it more smooth. Severin Opel 08-05-2018
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if (zoom) {
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/**
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* Zoom's the view to a specified distance in DZI-Levels.
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* The input level is clipped to allowed levels.
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* */
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let targetScale = this.scaleForFloatingLevel(zoom)
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|
|
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// Don't scale beyond boundaries.
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if (this.maxScale) targetScale = Math.min(this.maxScale, targetScale)
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if (this.minScale) targetScale = Math.max(targetScale, this.minScale)
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|
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this.image.scatter.requestScale(targetScale)
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}
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|
|
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if (coordinates) {
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//Get pixel position of lat lang values
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|
let point = this.coordinatesToPoint(coordinates)
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|
|
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let containerCenter
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if (this.frame) {
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containerCenter = this.getFrame().localCenter
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|
} else {
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containerCenter = {
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x: this.image.parent.width / 2,
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y: this.image.parent.height / 2
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}
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}
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|
|
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//Calculate the delta depending on image position and center the
|
|
// desired position in the frame.
|
|
let delta = {
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x: containerCenter.x - point.x * this.image.scatter.scale - this.scatter.position.x,
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y: containerCenter.y - point.y * this.image.scatter.scale - this.scatter.position.y
|
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}
|
|
|
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if (animate > 0) {
|
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let last = 0
|
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TweenMax.to({ x: 0, y: 0 }, animate, {
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|
ease: Power0.easeNone,
|
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x: delta.x,
|
|
y: delta.y,
|
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onUpdateParams: ['{self}'],
|
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onUpdate: tween => {
|
|
let step = tween.ratio - last
|
|
last = tween.ratio
|
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this.image.scatter.transform(Points.multiplyScalar(delta, step), /*ratio*/ 1, 0, { x: 0, y: 0 })
|
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}
|
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})
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} else {
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this.image.scatter.transform(delta, /*ratio*/ 1, 0, { x: 0, y: 0 })
|
|
}
|
|
}
|
|
// return this.image.scatter.position
|
|
}
|
|
|
|
scaleForFloatingLevel(level) {
|
|
level = Math.max(0, level - this.image.info.baseLevel)
|
|
return Math.pow(2, level) / this.image.resolution
|
|
}
|
|
|
|
floatingLevelForScale(scale) {
|
|
let level = Math.log2(scale * this.image.resolution)
|
|
let newLevel = this.image.info.baseLevel + Math.max(level, 0)
|
|
return Math.min(newLevel, this.image.info.maxLoadableLevel)
|
|
}
|
|
|
|
get distance() {
|
|
return this.floatingLevelForScale(this.scatter.scale)
|
|
}
|
|
|
|
clone(container, scatter = null) {
|
|
const map = new DeepZoomMap(this.mapdata, this.tilesConfig, {
|
|
alpha: this.alpha,
|
|
cover: this.cover,
|
|
debug: this.debug,
|
|
startScale: this.startScale,
|
|
minScale: this.minScale,
|
|
maxScale: this.maxScale,
|
|
rotatable: this.rotatable,
|
|
translatable: this.translatable,
|
|
scalable: this.scalable,
|
|
viewport: this.viewport
|
|
})
|
|
|
|
return map
|
|
}
|
|
|
|
tint() {
|
|
let color = DeepZoomMap.tintcolors[DeepZoomMap.tintcolor++ % DeepZoomMap.tintcolors.length]
|
|
|
|
this._forEachTile(tile => {
|
|
tile.tint = color
|
|
})
|
|
}
|
|
|
|
_forEachTile(callback) {
|
|
this.image.children[0].children.forEach(tiles => {
|
|
tiles.children.forEach(callback)
|
|
})
|
|
}
|
|
|
|
setAlpha(alpha) {
|
|
this._forEachTile(tile => {
|
|
tile.alpha = alpha
|
|
})
|
|
}
|
|
|
|
// /** Returns the tile layer level that corresponds to the given scale.
|
|
// * @param {number} scale - the scale factor
|
|
// **/
|
|
// levelForScale(scale) {
|
|
// let level = Math.round(Math.log2(scale * this.resolution)) // Math.floor(Math.log2(event.scale))+1
|
|
// let newLevel = this.info.baseLevel + Math.max(level, 0)
|
|
// return Math.min(newLevel, this.info.maxLoadableLevel)
|
|
// }
|
|
|
|
// /**
|
|
// * Returns the scale factor that correspond to a given level.
|
|
// * @param {number} level - the requested level
|
|
// * @returns {number} - Returns the scale level for the given level.
|
|
// */
|
|
// scaleForLevel(level){
|
|
// level = Math.max(0, level - this.info.baseLevel)
|
|
// return Math.pow(2, level) / this.resolution
|
|
// }
|
|
}
|
|
|
|
DeepZoomMap.tintcolors = [0xff0000, 0xff00ff, 0xffff00, 0x00ff00, 0x00ffff, 0x0000ff]
|
|
DeepZoomMap.tintcolor = 0
|
|
|
|
/**
|
|
*
|
|
* ImageMap extends GeoMap to display simple images
|
|
* as maps.
|
|
*/
|
|
|
|
export class ImageMap extends GeoMap {
|
|
constructor(sprite, mapdata, opts = {}) {
|
|
super(mapdata, opts)
|
|
if (this.debug) console.log('Construct Image Map', sprite, mapdata, opts)
|
|
|
|
this.sprite = sprite
|
|
|
|
this.baseZoomHeight = opts.baseZoomHeight ? opts.baseZoomHeight : this.sprite.texture.height
|
|
}
|
|
|
|
load(container = null, scatter = null) {
|
|
super.load(this.sprite, container, scatter)
|
|
this.image.alpha = this.alpha
|
|
this.image.interactive = true
|
|
}
|
|
|
|
clone(container = null, scatter = null) {
|
|
const map = new ImageMap(new PIXI.Sprite(this.sprite.texture), this.mapdata, {
|
|
alpha: this.alpha,
|
|
cover: this.cover,
|
|
debug: this.debug,
|
|
startScale: this.startScale,
|
|
minScale: this.minScale,
|
|
maxScale: this.maxScale,
|
|
rotatable: this.rotatable,
|
|
translatable: this.translatable,
|
|
scalable: this.scalable,
|
|
viewport: this.viewport
|
|
})
|
|
map.load(container, scatter)
|
|
|
|
return map
|
|
}
|
|
|
|
/**
|
|
*
|
|
*
|
|
* @param {*} coordinates
|
|
* @param {*} [zoom=null]
|
|
* @param {*} [{ animate = 0 }={}]
|
|
* @memberof ImageMap
|
|
*/
|
|
moveTo(coordinates, zoom = null, { animate = 0 } = {}) {
|
|
if (this.image.scatter == null) {
|
|
return
|
|
}
|
|
//TODO: This is jaggy on submaps. Make it more smooth. Severin Opel 08-05-2018
|
|
if (zoom) {
|
|
/**
|
|
* Zoom's the view to a specified distance in DZI-Levels.
|
|
* The input level is clipped to allowed levels.
|
|
* */
|
|
|
|
let targetScale = zoom * this.zoomFactor
|
|
|
|
// Don't scale beyond boundaries.
|
|
if (this.maxScale) targetScale = Math.min(this.maxScale, targetScale)
|
|
|
|
if (this.minScale) targetScale = Math.max(targetScale, this.minScale)
|
|
|
|
this.image.scatter.requestScale(targetScale)
|
|
}
|
|
|
|
//coordinates = null
|
|
if (coordinates) {
|
|
//Get pixel position of lat lang values
|
|
let point = this.coordinatesToPoint(coordinates)
|
|
|
|
let containerCenter
|
|
if (this.frame) {
|
|
containerCenter = this.getFrame().localCenter
|
|
} else {
|
|
containerCenter = {
|
|
x: this.image.parent.width / 2,
|
|
y: this.image.parent.height / 2
|
|
}
|
|
}
|
|
|
|
//Calculate the delta depending on image position and center the
|
|
// desired position in the frame.
|
|
|
|
let delta = {
|
|
x: containerCenter.x - point.x * this.image.scatter.scale - this.scatter.position.x,
|
|
y: containerCenter.y - point.y * this.image.scatter.scale - this.scatter.position.y
|
|
}
|
|
|
|
if (animate > 0) {
|
|
let last = 0
|
|
TweenMax.to({ x: 0, y: 0 }, animate, {
|
|
ease: Power0.easeNone,
|
|
x: delta.x,
|
|
y: delta.y,
|
|
onUpdateParams: ['{self}'],
|
|
onUpdate: tween => {
|
|
let step = tween.ratio - last
|
|
last = tween.ratio
|
|
this.image.scatter.transform(Points.multiplyScalar(delta, step), /*ratio*/ 1, 0, { x: 0, y: 0 })
|
|
}
|
|
})
|
|
} else {
|
|
this.image.scatter.transform(delta, /*ratio*/ 1, 0, { x: 0, y: 0 })
|
|
}
|
|
}
|
|
}
|
|
|
|
get zoom() {
|
|
return this.scatter.scale / this.zoomFactor
|
|
}
|
|
|
|
get zoomFactor() {
|
|
let factor = this.baseZoomHeight / this.sprite.texture.height
|
|
return factor
|
|
}
|
|
}
|