Severin Opel
86b23f4e6f
Migrated a ot of the content from the tuesch to the iwmlib. This is before the decoupeling of the layers.
124 lines
3.4 KiB
JavaScript
124 lines
3.4 KiB
JavaScript
import { DeepZoomMap } from './map.js'
|
|
|
|
/**
|
|
* The MapView class is responsible for a consistent map view.
|
|
* It is aware of the current viewposition, the scale and viewport.
|
|
* It ensures, that maps can be changed, without the user noticing it.
|
|
*
|
|
*/
|
|
export default class MapView {
|
|
/**
|
|
*
|
|
* @param {object} [focus = {x:0, y:0}] - Defines the startup focuspoint of the app.
|
|
* @param {number} [zoom = 0] - Defines the startup zoom of the app. Note that this is just a request.
|
|
* The MapView will prioritize a full scale app, than displaying the demanded zoom factor
|
|
*/
|
|
constructor({
|
|
map = null,
|
|
focus = null,
|
|
zoom = null,
|
|
viewport = { min: { x: -85, y: -180 }, max: { x: 85, y: 180 } }
|
|
} = {}) {
|
|
this.viewport = viewport
|
|
this._focus = focus
|
|
this._zoom = zoom
|
|
this._map = map
|
|
this.referenceHeight = 256
|
|
}
|
|
|
|
get focus() {
|
|
return this._focus
|
|
}
|
|
get zoom() {
|
|
return this._zoom
|
|
}
|
|
|
|
get map() {
|
|
return this._map
|
|
}
|
|
|
|
/**
|
|
* Sets the map to the given focuspoint and zoom factor.
|
|
*/
|
|
setMap(map) {
|
|
this._map = map
|
|
this.update()
|
|
return true
|
|
}
|
|
|
|
update() {
|
|
this.map.moveTo(this._focus, this._zoom)
|
|
}
|
|
|
|
transformed(e) {
|
|
this.updateZoom()
|
|
this.updateFocusPoint()
|
|
}
|
|
|
|
applyCameraPosition() {
|
|
this.updateFocusPoint()
|
|
this.updateZoom()
|
|
}
|
|
|
|
updateFocusPoint() {
|
|
const frame = this.map.getFrame()
|
|
this._focus = this.coordinatesFromWindowPoint(frame.localCenter)
|
|
}
|
|
|
|
updateZoom() {
|
|
/**
|
|
* TODO: This relies on the fact, that all maps have the same tileSize,
|
|
* if a set would have a smaller tileSize. Improve that.
|
|
*/
|
|
if (this.map instanceof DeepZoomMap) this._zoom = this.map.floatingLevelForScale(this.map.image.scatter.scale)
|
|
else {
|
|
this._zoom = this.map.zoom
|
|
console.warn('Zoom is not yet correctly implemented in this Map type: ' + this.map)
|
|
}
|
|
}
|
|
|
|
mapPointToWindowPoint(point) {
|
|
let container = this.map.image.parent
|
|
|
|
let _point = new PIXI.Point(
|
|
this.map.scatter.position.x + this.map.scatter.scale * point.x,
|
|
this.map.scatter.position.y + this.map.scatter.scale * point.y
|
|
)
|
|
|
|
return container.toGlobal(_point)
|
|
}
|
|
|
|
windowPointToMapPoint(point) {
|
|
let offset = this.map.image.parent.toGlobal({ x: 0, y: 0 })
|
|
let _point = new PIXI.Point(
|
|
(point.x - this.map.scatter.position.x - offset.x) / this.map.scatter.scale,
|
|
(point.y - this.map.scatter.position.y - offset.y) / this.map.scatter.scale
|
|
)
|
|
|
|
return _point
|
|
}
|
|
|
|
/**
|
|
* Gets the coordinates of a specific point in the viewport.
|
|
*
|
|
* @param {PIXI.Point | {x,y}} point - Pixel position in the viewport.
|
|
* @returns {{x,y}} Coordinates on the map of the provided position.
|
|
* @memberof MapView
|
|
*/
|
|
coordinatesFromWindowPoint(point) {
|
|
let position = {
|
|
x: point.x - this.map.scatter.position.x,
|
|
y: point.y - this.map.scatter.position.y
|
|
}
|
|
|
|
let normalized = {
|
|
x: position.x / (this.map.width * this.map.scatter.scale),
|
|
y: position.y / (this.map.height * this.map.scatter.scale)
|
|
}
|
|
|
|
let coordinates = this.map.mapdata.toCoordinates(normalized)
|
|
|
|
return coordinates
|
|
}
|
|
}
|