560 lines
18 KiB
JavaScript
560 lines
18 KiB
JavaScript
/* ES Lint */
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/* globals PIXI, requestAnimationFrame, performance, app*/
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import { DisplayObjectScatter, ScatterContainer } from '../scatter.js'
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import { Points } from '../../utils.js'
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import { EventHandler } from './utils.js'
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/**
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* The AdvancedScatterContainer extends the ScatterContainer, but
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* uses the findTargetNew instead of the findTarget method, which takes interactive elements
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* into account, when calculating the target.
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*/
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export class AdvancedScatterContainer extends ScatterContainer {
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applyToChildScattersRecursively(parent, root, applyFunc) {
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for (let child of parent.children) {
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if (child.scatter) {
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applyFunc(child, root)
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this.applyToChildScattersRecursively(child, root, applyFunc)
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}
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}
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}
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/**
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* The update method was adjusted to draw bounds and polygpns
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*/
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update(dt) {
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this.clear()
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this.lineStyle(1, 0x0000ff)
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if (this.showBounds) {
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this.applyToChildScattersRecursively(this, this, (child, root) => {
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let position = child.worldTransform.apply(new PIXI.Point(0, 0))
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this.drawShape(child.scatter.bounds)
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let center = {
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x: child.scatter.width / 2 / child.scatter.scale,
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y: child.scatter.height / 2 / child.scatter.scale
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}
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center = child.worldTransform.apply(center)
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this.drawCircle(center.x, center.y, 4)
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this.drawCircle(position.x, position.y, 4)
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})
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this.lineStyle(2, 0x0000ff)
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this.drawShape(this.bounds)
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}
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if (this.showPolygon) {
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this.lineStyle(2, 0xff0000)
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for (let child of this.children) {
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if (child.scatter) {
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let polygon = child.scatter.polygon
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let shape = new PIXI.Polygon(polygon.flatAbsolutePoints())
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if (
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shape.points[0] !== shape.points[shape.points.length - 2] ||
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shape.points[1] !== shape.points[shape.points.length - 1]
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) {
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shape.points.push(shape.points[0], shape.points[1])
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}
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this.drawShape(shape)
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}
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}
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}
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if (this.showTouches) {
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let current = this.delegate.interaction.current
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for (let [key, point] of current.entries()) {
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let local = this.mapPositionToPoint(point)
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this.drawCircle(local.x, local.y, 12)
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}
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}
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}
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get width() {
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return this.bounds.width
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}
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get height() {
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return this.bounds.width
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}
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findTarget(event, local, global) {
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// UO: still problematic. Does not find non interactive elements
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// which are needed for some stylus applications
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if (event.claimedByScatter) {
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return null
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}
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this.hitScatter = null
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let interactionManager = this.renderer.plugins.interaction
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let displayObject = interactionManager.hitTest(local, this)
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console.log(displayObject.dontBlockScatter, displayObject.parent)
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if (displayObject.dontBlockScatter && displayObject.parent != null) {
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displayObject = interactionManager.hitTest(local, displayObject.parent)
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}
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if (displayObject != null && displayObject.scatter != null) this.hitScatter = displayObject.scatter
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if (this.claimEvents) event.claimedByScatter = this.hitScatter
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console.log(displayObject)
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return this.hitScatter
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}
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}
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export class RigidScatterContainer extends AdvancedScatterContainer {
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constructor(width, height, renderer, opts) {
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super(renderer, opts)
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this._width = width
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this._height = height
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}
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resize(width, height) {
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this._width = width
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this._height = height
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}
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get width() {
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return this._width
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}
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get height() {
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return this._height
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}
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_calculateBounds() {
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this._bounds.clear()
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let bounds = new PIXI.Bounds()
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bounds.minX = this.parent.position.x
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bounds.minY = this.parent.position.y
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bounds.maxX = this.parent.position.x + this.width
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bounds.maxY = this.parent.position.y + this.height
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this._bounds.addBounds(bounds)
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}
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}
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export class RigidContainer extends PIXI.Graphics {
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constructor(width, height, { onResize = null } = {}) {
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super()
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if (!width || !height) {
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console.log(
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`Width (${width}) or height (${height}) not set! If this is intended use another PIXI.DisplayObject instead.`,
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this
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)
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}
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this._width = width
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this._height = height
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this.beginFill(0xffffff, 0.3)
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this.drawRect(0, 0, this.width, this.height)
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this.onResize = new EventHandler('resize', {
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listeners: onResize ? [onResize] : []
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})
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}
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/**
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* Resizes the scattercontainer to the provided dimensions.
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*
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* @param {number} width - Target width of the resize.
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* @param {number} height - Target height of the resize.
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* @memberof RigidContainer
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*/
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resize(width, height) {
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this._width = width
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this._height = height
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this._updateHitArea()
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this.onResize.call(this, 'resize', { x: width, y: height })
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}
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_updateHitArea() {
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// this.hitArea = new PIXI.Rectangle(0,0, this.width, this.height)
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}
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get width() {
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return this._width
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}
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get height() {
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return this._height
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}
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}
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/**
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* Specialization of the DisplayObjectScatter with special behavior needed for maps.
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*/
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class AdvancedScatter extends DisplayObjectScatter {
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/**
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* Animates the throw and ensures that the map is always visible. This
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* is different from the standard behavior.
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*
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* @param {*} time
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* @memberof AdvancedScatter
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*/
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animateThrow(time) {
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// In rare cases animateThrow is called when the displayObject is already removed
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if (this.displayObject.parent == null) {
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return
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}
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//Moved this outside, as the time continously increases,
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//when the object is not thrown.
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if (this.velocity != null) {
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let dt = this._throwDeltaTime()
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// This seems to just correct the velocity when its calculated wrong.
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// In what case can it get bigger? Velocity tends to always shrink, when no force is added.
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let d = this._getThrowDelta(dt)
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this._move(d)
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this.onDragUpdate(d)
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if (dt == 0 || this.needsAnimation()) {
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requestAnimationFrame(this.animateThrow.bind(this))
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return
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} else {
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if (this.isOutside()) {
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requestAnimationFrame(this.animateThrow.bind(this))
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return
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}
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}
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}
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this.onDragComplete()
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}
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get parent() {
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// Returns the parent is a scatter get the parent scatter.
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// If it's a scatter container, get the displayObject.
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// Other cases are not allowed.
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return this.displayObject.parent != null && this.displayObject.parent.scatter != null
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? this.displayObject.parent.scatter
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: this.displayObject.parent
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}
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_getThrowDelta(dt) {
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this.velocity = this.nextVelocity(this.velocity)
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if (this.velocity != null) {
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return Points.multiplyScalar(this.velocity, dt)
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}
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return { x: 0, y: 0 }
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}
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freeze({ translatable = false, scalable = false, rotatable = false, movableX = false, movableY = false } = {}) {
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this.translatable = translatable
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this.scalable = scalable
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this.rotatable = rotatable
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this.movableX = movableX
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this.movableY = movableY
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}
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unfreeze({ translatable = true, scalable = true, rotatable = true, movableX = true, movableY = true } = {}) {
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this.freeze({
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translatable,
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scalable,
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rotatable: false,
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movableX,
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movableY
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})
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}
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}
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export class SubmapScatter extends DisplayObjectScatter {
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get width() {
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return this.displayObject.width * this.displayObject.scale.x
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}
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get height() {
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return this.displayObject.height * this.displayObject.scale.y
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}
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freeze({ translatable = false, scalable = false, rotatable = false, movableX = false, movableY = false } = {}) {
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this.translatable = translatable
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this.scalable = scalable
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this.rotatable = rotatable
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this.movableX = movableX
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this.movableY = movableY
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}
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unfreeze({ translatable = true, scalable = true, rotatable = true, movableX = true, movableY = true } = {}) {
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this.freeze({
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translatable,
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scalable,
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rotatable: false,
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movableX,
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movableY
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})
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}
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onZoomed(about) {
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super.onZoomed(about)
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}
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}
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/**
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* TODO
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* A scatter which width does not increase when child elements are added.
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*/
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export class CompactScatter extends AdvancedScatter {}
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/**
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* A problem with PIXI Objects is, that the bounding box changes
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* with child elements. Therefore the sized scatter has a rigid size, that is not
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* changed by elements, but only with their width and height property.
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*/
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export class CoverScatter extends AdvancedScatter {
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constructor(a, b, opts) {
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super(a, b, opts)
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opts = Object.assign(
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{
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debug: false,
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cover: true,
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boundaries: {
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min: { x: 0, y: 0 },
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max: { x: 1, y: 1 }
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}
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},
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opts
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)
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this.debug = opts.debug
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this.cover = opts.cover
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this._boundaries = opts.boundaries
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if (this.debug) {
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this.debugGraphics = new PIXI.Graphics()
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this.displayObject.addChild(this.debugGraphics)
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this.debugGraphics.lineStyle(0.2, 0x00ff00)
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this.debugGraphics.drawRect(
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this.width * this.boundaries.min.x,
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this.height * this.boundaries.min.y,
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this.width * (this.boundaries.max.x - this.boundaries.min.x),
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this.height * (this.boundaries.max.y - this.boundaries.min.y)
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)
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this.debugGraphics.endFill()
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}
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if (this.cover) {
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// The reference to the element handler needs to be stored,
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// that we can remove it later on.
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const eventHandler = this._applyInitialCover.bind(this, null, true)
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this._applyInitialCover(eventHandler)
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}
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}
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_applyInitialCover(eventHandler, removeListener = false) {
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if (this.debug) console.log('ApplyInitialCover: ', parent)
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if (removeListener) {
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this.displayObject.off('added', eventHandler)
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}
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if (this.displayObject.parent)
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this.forceCover(this.displayObject.parent.width, this.displayObject.parent.height)
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else {
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this.displayObject.on('added', eventHandler)
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}
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}
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get boundaries() {
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if (this._boundaries) return this._boundaries
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else
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return {
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min: { x: 0, y: 0 },
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max: { x: 1, y: 1 }
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}
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}
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transform(translate, zoom, rotate, anchor) {
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if (this.cover) {
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if (!this.parent) {
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return new PIXI.Rectangle(0, 0, window.innerWidth, window.innerHeight)
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}
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/**
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* If the scaling violates the minCoverScale, the zoom is adjusted to perfectly match
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* the minCoverScale.
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*/
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let minCoverScale = this.calculateMinCoverScale(this.parent.width, this.parent.height)
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let { zoom: fixedZoom, scale } = this.calculateScale(zoom)
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if (scale < minCoverScale) {
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zoom = minCoverScale / this.scale
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}
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}
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super.transform(translate, zoom, rotate, anchor)
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if (this.cover) {
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let postTranslate = this.outsideBoundaries()
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super.transform(postTranslate, 1, 0, { x: 0, y: 0 })
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}
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}
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outsideBoundaries(movement = { x: 0, y: 0 }, { boundaries = this.boundaries } = {}) {
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if (this.parent == null) {
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return { x: 0, y: 0 }
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}
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let left = -(this.displayObject.position.x + movement.x + this.width * boundaries.min.x)
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let right = -left + this.width * (boundaries.max.x - boundaries.min.x) - this.parent.width
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let top = -(this.displayObject.position.y + movement.y + this.height * boundaries.min.y)
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let bot = -top + this.height * (boundaries.max.y - boundaries.min.y) - this.parent.height
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// Helper function to limit an Axis inside a container, or 'glue' it
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// to the lower side, if the size is smaller than the size of the
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// container.
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function limitAxis(low, high, contentSize, containerSize) {
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let val = 0
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if (low < 0) {
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val = low
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} else if (high < 0) {
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if (contentSize > containerSize) {
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// ... and the element is bigger as the container
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// - reset it to the containersize.
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val = -high
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} else {
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// ... and the size is not high enough, then
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// 'glue' it to the low axis.
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val = low
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}
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}
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return val
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}
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// Use the helper function to correct the movement to cover x and y.
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let correctionX = limitAxis(left, right, this.width * (boundaries.max.x - boundaries.min.x), this.parent.width)
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let correctionY = limitAxis(top, bot, this.height * (boundaries.max.y - boundaries.min.y), this.parent.height)
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let fixedMovement = {
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x: correctionX == 0 ? movement.x : correctionX + movement.x,
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y: correctionY == 0 ? movement.y : correctionY + movement.y
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}
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return fixedMovement
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}
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calculateMinCoverScale(width, height) {
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let scale = 0
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if (!(this.width == 0 && this.height == 0)) {
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let actualWidth = this.width / this.scale
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let actualHeight = this.height / this.scale
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let boundaryWidth = (this.boundaries.max.x - this.boundaries.min.x) * actualWidth
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let boundaryHeight = (this.boundaries.max.y - this.boundaries.min.y) * actualHeight
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let coverWidth = width / boundaryWidth
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let coverHeight = height / boundaryHeight
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scale = Math.max(coverWidth, coverHeight)
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}
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return scale
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}
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_getThrowDelta(dt) {
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let delta = super._getThrowDelta(dt)
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if (this.cover) {
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delta = this.outsideBoundaries(delta, {
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boundaries: this.boundaries
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})
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}
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return delta
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}
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containerChanged(width, height) {
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if (this.cover) this.forceCover(width, height)
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}
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forceCover() {
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this.requestScale(this.scale)
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let translate = this.outsideBoundaries()
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this.transform(translate, 1, 0, { x: 0, y: 0 })
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}
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requestScale(scale) {
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if (this.scalable && this.parent != null) {
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if (this.cover) {
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let minCoverScale = this.calculateMinCoverScale(this.parent.width, this.parent.height)
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scale = scale < minCoverScale ? minCoverScale : scale
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}
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this.scale = scale
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}
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}
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requestFocus(point) {
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let allowedMovement = this.outsideBoundaries(Points.subtract(point, this.position))
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this.transform(allowedMovement, 1, 0, { x: 0, y: 0 })
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}
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}
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/**
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* The MapObjectScatter somewhat inverts the behaviour of
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* regular throwables. Regular throwables should bounce of the wall, when they
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* overlap to a certain amount. Maps on the otherhand are intended to overlap with the
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* scatter container heavily to hide irrelevant parts of the map without revealing
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* any background.
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*
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* @class
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* @extends DisplayObjectScatter
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*/
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export class MapObjectScatter extends CoverScatter {
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/**
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* x=null, y=null,
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minScale=0.1,
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maxScale=1.0,
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startScale=1.0,
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autoBringToFront=true,
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translatable=true, scalable=true, rotatable=true, resizable=false,
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movableX=true,
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movableY=true,
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throwVisibility=44,
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throwDamping = 0.95,
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autoThrow=true,
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rotationDegrees=null,
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rotation=null,
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onTransform = null }
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*/
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constructor(displayObject, renderer, opts = {}) {
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opts = Object.assign(
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{
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debug: false,
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cover: false,
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startScale: 1,
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boundaries: {
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min: { x: 0, y: 0 },
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max: { x: 1, y: 1 }
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},
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autoBringToFront: false
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},
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opts
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)
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super(displayObject, renderer, opts)
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if (!renderer) {
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console.error('Renderer was not set!')
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return
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}
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this.cover = opts.cover
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}
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moveTo() {
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super.moveTo(...arguments)
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}
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lock() {
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this.rotatable = false
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this.moveable = false
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this.scaleable = false
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}
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unlock() {
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this.rotatable = true
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this.moveable = true
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this.scaleable = true
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}
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getWorldScatter() {
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return this.parent
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}
|
|
}
|