import Events from '../events.js' import { AbstractScatter } from '../scatter.js' import { Angle, Points, Polygon } from '../utils.js' import { InteractionMapper } from '../interaction.js' /** A container for scatter objects, which uses a single InteractionMapper * for all children. This reduces the number of registered event handlers * and covers the common use case that multiple objects are scattered * on the same level. */ export class ScatterContainer extends PIXI.Graphics { /** * @constructor * @param {PIXI.Renderer} renderer - PIXI renderer, needed for hit testing * @param {Bool} stopEvents - Whether events should be stopped or propagated * @param {Bool} claimEvents - Whether events should be marked as claimed * if findTarget return as non-null value. * @param {PIXI.Container} container - A container for the scatter * @param {Bool} showBounds - Show bounds for debugging purposes. * @param {Bool} showTouches - Show touches and pointer for debugging purposes. * @param {Color} backgroundColor - Set background color if specified. * @param {PIXIApp} app - Needed if showBounds is true to register * update handler. */ constructor( renderer, { stopEvents = true, claimEvents = true, container = null, showBounds = false, showPolygon = false, showTouches = false, backgroundColor = null, app = window.app } = {} ) { super() this.container = container if (this.container) this.containerDimensions = { x: this.container.width, y: this.container.height } this.backgroundWidth = null this.backgroundHeight = null this.app = app this.renderer = renderer this.stopEvents = stopEvents this.claimEvents = claimEvents this.delegate = new InteractionMapper(this.eventReceiver, this) this.showBounds = showBounds this.showTouches = showTouches this.showPolygon = showPolygon this.backgroundColor = backgroundColor if (showBounds || showTouches || showPolygon) { //console.log("Show TOUCHES!!!") this.app.ticker.add(delta => this.update(delta), this) } if (backgroundColor) { this.updateBackground() } } updateBackground() { this.clear() let rect = this.bounds this.beginFill(this.backgroundColor, 1) this.drawRect(0, 0, rect.width, rect.height) this.endFill() } get eventReceiver() { return this.renderer.plugins.interaction.interactionDOMElement } get bounds() { let x = 0 let y = 0 // @container: We need to call the constant values, as the container // gets resized, when a child moves outside the original boundaries. let w = this.container ? this.containerDimensions.x : this.backgroundWidth || this.app.width let h = this.container ? this.containerDimensions.y : this.backgroundHeight || this.app.height if (this.app.fullscreen && this.app.monkeyPatchMapping) { let fixed = this.mapPositionToPoint({ x: w, y: 0 }) if (fixed.x < w) { w = fixed.x } if (fixed.y > 0) { y += fixed.y h -= fixed.y } } return new PIXI.Rectangle(x, y, w, h) } get center() { let r = this.bounds return { x: r.width / 2, y: r.height / 2 } } get polygon() { let r = this.bounds let w2 = r.width / 2 let h2 = r.height / 2 let center = { x: w2, y: h2 } let polygon = new Polygon(center) polygon.addPoint({ x: -w2, y: -h2 }) polygon.addPoint({ x: w2, y: -h2 }) polygon.addPoint({ x: w2, y: h2 }) polygon.addPoint({ x: -w2, y: h2 }) return polygon } update(dt) { this.clear() this.lineStyle(1, 0x0000ff) if (this.showBounds) { for (let child of this.children) { if (child.scatter) { //let {x, y, width, height} = child.scatter.throwBounds() // new PIXI.Rectangle(x, y, width, height) this.drawShape(child.scatter.bounds) let center = child.scatter.center this.drawCircle(center.x, center.y, 4) this.drawCircle(child.scatter.x, child.scatter.y, 4) } } this.lineStyle(2, 0x0000ff) this.drawShape(this.bounds) } if (this.showPolygon) { this.lineStyle(2, 0xff0000) for (let child of this.children) { if (child.scatter) { let polygon = child.scatter.polygon let shape = new PIXI.Polygon(polygon.flatAbsolutePoints()) shape.close() this.drawShape(shape) } } } if (this.showTouches) { let current = this.delegate.interaction.current for (let [key, point] of current.entries()) { let local = this.mapPositionToPoint(point) this.drawCircle(local.x, local.y, 12) } } } capture(event) { if (this.stopEvents) Events.stop(event) return true } fakeInteractionEvent(point, key) { return { data: { global: point, key: key } } } findHitScatter(data, displayObject, hit) { // if (hit) { // console.log("findHitScatter", displayObject) // } if ( hit && this.hitScatter === null && typeof displayObject != undefined ) { this.hitScatter = displayObject.scatter ? displayObject.scatter : null } } mapPositionToPoint(point, element = null) { // In case of nested scatters we get an additional parameter that // contains the found scatter let local = new PIXI.Point() let interactionManager = this.renderer.plugins.interaction interactionManager.mapPositionToPoint(local, point.x, point.y) if ( element instanceof DisplayObjectScatter && element.displayObject.parent != null ) { return element.displayObject.parent.toLocal(local) } return local } /** * New method hitTest implemented (in InteractionManager, since 4.5.0). * See https://github.com/pixijs/pixi.js/pull/3878 */ findTarget(event, local, global) { if (event.claimedByScatter) { return null } this.hitScatter = null let interactionManager = this.renderer.plugins.interaction let fakeEvent = this.fakeInteractionEvent(local) interactionManager.processInteractive( fakeEvent, this, this.findHitScatter.bind(this), true ) if (this.claimEvents) event.claimedByScatter = this.hitScatter return this.hitScatter } findTargetNew(event, local, global) { // UO: still problematic. Does not find non interactive elements // which are needed for some stylus applications if (event.claimedByScatter) { return null } this.hitScatter = null let interactionManager = this.renderer.plugins.interaction let displayObject = interactionManager.hitTest(local, this) if (displayObject != null && displayObject.scatter != null) this.hitScatter = displayObject.scatter if (this.claimEvents) event.claimedByScatter = this.hitScatter return this.hitScatter } onStart(event, interaction) {} onMove(event, interaction) {} onEnd(event, interaction) { for (let key of interaction.ended.keys()) { let point = interaction.ended.get(key) if (interaction.isLongPress(key)) { this.onLongPress(key, point) } if (interaction.isTap(key)) { this.onTap(key, point) } } } onTap(key, point) { console.info('ScatterContainer.onTap') } onLongPress(key, point) { console.info('ScatterContainer.onLongPress') } bringToFront(displayObject) { this.addChild(displayObject) } layout(width, height) { this.backgroundWidth = width this.backgroundHeight = height if (this.backgroundColor) { this.updateBackground() } } } /** A wrapper for child elements of a ScatterContainer. Can be used * to combine scattered objects with non-scattered objects. Any * PIXI.DisplayObject can be wrapped. */ export class DisplayObjectScatter extends AbstractScatter { constructor( displayObject, renderer, { x = null, y = null, minScale = 0.1, maxScale = 1.0, startScale = 1.0, autoBringToFront = true, translatable = true, scalable = true, rotatable = true, resizable = false, movableX = true, movableY = true, throwVisibility = 44, throwDamping = 0.95, autoThrow = true, rotationDegrees = null, rotation = null, overdoScaling = 1.5, onTransform = null, onThrowFinished = null } = {} ) { // For the simulation of named parameters, // see: http://exploringjs.com/es6/ch_parameter-handling.html super({ overdoScaling, minScale, maxScale, startScale, autoBringToFront, translatable, scalable, rotatable, resizable, movableX, movableY, throwVisibility, throwDamping, autoThrow, onThrowFinished, rotationDegrees, rotation, onTransform }) this.displayObject = displayObject this.displayObject.scatter = this this.renderer = renderer this.scale = startScale this.rotationDegrees = this.startRotationDegrees // Only set x and y if they are specified. // Otherwise the displayobject gets corrupted. if (x != null) this.x = x if (y != null) this.y = y } getWorldScatter() { return this } /** Returns geometry data as object. **/ getState() { return { scale: this.scale, x: this.x, y: this.y, rotation: this.rotation } } setup() { this.setupMouseWheelInteraction() } roundPixel(value) { // UO: Should be obsolete because Renderer supports roundPixels by default return value let res = this.renderer.resolution return Math.round(value * res) / res } get container() { // return this.displayObject.parent let obj = this.displayObject while (obj.parent != null && !(obj.parent instanceof ScatterContainer)) obj = obj.parent return obj.parent } get x() { return this.position.x } set x(value) { this.position.x = value } get y() { return this.position.y } set y(value) { this.position.y = value } get polygon() { let polygon = new Polygon(this.center) let w2 = this.width / 2 let h2 = this.height / 2 polygon.addPoint({ x: -w2, y: -h2 }) polygon.addPoint({ x: w2, y: -h2 }) polygon.addPoint({ x: w2, y: h2 }) polygon.addPoint({ x: -w2, y: h2 }) polygon.rotate(this.rotation) return polygon } get containerBounds() { return this.container.bounds } get containerPolygon() { let container = this.container if (container == null) return null return container.polygon } get position() { return this.displayObject.position } set position(value) { this.displayObject.position = value } get scale() { return this.displayObject.scale.x } set scale(value) { this.displayObject.scale.x = value this.displayObject.scale.y = value } get width() { return this.displayObject.width } get height() { return this.displayObject.height } get bounds() { return this.displayObject.getBounds() } get pivot() { return this.displayObject.pivot } get rotation() { return this.displayObject.rotation } set rotation(value) { this.displayObject.rotation = value } get rotationDegrees() { return Angle.radian2degree(this.displayObject.rotation) } set rotationDegrees(value) { this.displayObject.rotation = Angle.degree2radian(value) } get center() { let w2 = this.width / 2 let h2 = this.height / 2 let dist = Math.sqrt(w2 * w2 + h2 * h2) let angle = Points.angle({ x: w2, y: h2 }, { x: 0, y: 0 }) let p = this.displayObject.x let c = Points.arc(this.position, this.rotation + angle, dist) return c // Points.subtract(c, this.pivot) } get rotationOrigin() { // In PIXI the default rotation and scale origin is the position return this.position // Points.add(this.position, this.pivot) } mapPositionToContainerPoint(point) { // UO: We need the coordinates related to this scatter in case // of nested scatters if (this.container != null) return this.container.mapPositionToPoint(point, this) return point } capture(event) { return true } bringToFront() { if (this.autoBringToFront) { if (this.displayObject.parent instanceof ScatterContainer) { let scatterContainer = this.displayObject.parent scatterContainer.bringToFront(this.displayObject) } else if ( this.displayObject.parent != null && this.displayObject.parent.scatter ) { this.displayObject.parent.scatter.toFront(this.displayObject) } } } toFront(displayObject) { this.displayObject.addChild(displayObject) } validScale(scale) { scale = Math.max(scale, this.minScale) scale = Math.min(scale, this.maxScale) return scale } }