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/* Copyright© 2000 - 2021 SuperMap Software Co.Ltd. All rights reserved.
* This program are made available under the terms of the Apache License, Version 2.0
* which accompanies this distribution and is available at http://www.apache.org/licenses/LICENSE-2.0.html.*/
import {
baiduMapLayer
} from 'mapv';
import mapboxgl from 'mapbox-gl';
import {
getMeterPerMapUnit
} from '@supermap/iclient-common';
var BaseLayer = baiduMapLayer ? baiduMapLayer.__proto__ : Function;
/**
* @private
* @class MapvRenderer
* @classdesc MapV图层渲染。
* @param {Object} map - 地图。
* @param {Object} layer - 图层。
* @param {MapV.DataSet} dataSet - 数据集。
* @param {Object} options - 交互时所需可选参数。
* @extends {MapV.BaseLayer}
*
*/
export class MapvRenderer extends BaseLayer {
constructor(map, layer, dataSet, options) {
super(map, dataSet, options);
if (!BaseLayer) {
return;
}
this.map = map;
var self = this;
options = options || {};
self.init(options);
self.argCheck(options);
this.canvasLayer = layer;
this.stopAniamation = false;
this.animation = options.animation;
this.clickEvent = this.clickEvent.bind(this);
this.mousemoveEvent = this.mousemoveEvent.bind(this);
this.bindMapEvent();
this.bindEvent();
this._expectShow = true;
}
/**
* @function MapvRenderer.prototype.clickEvent
* @description 点击绑定事件。
* @param {Object} e - 事件。
*/
clickEvent(e) {
var pixel = e.point;
super.clickEvent(pixel, e);
}
/**
* @function MapvRenderer.prototype.mousemoveEvent
* @description 鼠标移动事件。
* @param {Object} e - 事件。
*/
mousemoveEvent(e) {
var pixel = e.point;
super.mousemoveEvent(pixel, e);
}
/**
* @function MapvRenderer.prototype.bindEvent
* @description 绑定事件。
*/
bindEvent() {
var map = this.map;
if (this.options.methods) {
if (this.options.methods.click) {
map.on('click', this.clickEvent);
}
if (this.options.methods.mousemove) {
map.on('mousemove', this.mousemoveEvent);
}
}
}
/**
* @function MapvRenderer.prototype.unbindEvent
* @description 解绑事件。
*/
unbindEvent() {
var map = this.map;
if (this.options.methods) {
if (this.options.methods.click) {
map.off('click', this.clickEvent);
}
if (this.options.methods.mousemove) {
map.off('mousemove', this.mousemoveEvent);
}
}
}
/**
* @function MapvRenderer.prototype.getContext
* @description 获取信息。
*/
getContext() {
return this.canvasLayer.canvas.getContext(this.context);
}
/**
* @function MapvRenderer.prototype.addData
* @description 添加数据。
* @param {oject} data - 待添加的数据。
* @param {oject} options - 待添加的数据信息。
*/
addData(data, options) {
var _data = data;
if (data && data.get) {
_data = data.get();
}
this.dataSet.add(_data);
this.update({
options: options
});
}
/**
* @function MapvRenderer.prototype.update
* @description 更新图层。
* @param {Object} opt - 待更新的数据。
* @param {Object} opt.data - mapv 数据集。
* @param {Object} opt.options - mapv 绘制参数。
*/
update(opt) {
var update = opt || {};
var _data = update.data;
if (_data && _data.get) {
_data = _data.get();
}
if (_data != undefined) {
this.dataSet.set(_data);
}
super.update({
options: update.options
});
}
/**
* @function MapvRenderer.prototype.getData
* @description 获取数据。
*/
getData() {
return this.dataSet;
}
/**
* @function MapvRenderer.prototype.removeData
* @description 删除符合过滤条件的数据。
* @param {function} [filter] - 过滤条件。条件参数为数据项，返回值为true,表示删除该元素；否则表示不删除。
*/
removeData(filter) {
if (!this.dataSet) {
return;
}
var newData = this.dataSet.get({
filter: function (data) {
return filter != null && typeof filter === 'function' ? !filter(data) : true;
}
});
this.dataSet.set(newData);
this.update({
options: null
});
}
/**
* @function MapVRenderer.prototype.clearData
* @description 清除数据。
*/
clearData() {
this.dataSet && this.dataSet.clear();
this.update({
options: null
});
}
/**
* @function MapVRenderer.prototype.updateData
* @param {Object} dataSet - 数据集。
* @param {Object} options - 数据项配置。
* @description 更新数据。
*/
updateData(dataSet, options) {
if (dataSet && dataSet.get) {
this.dataSet.set(dataSet.get());
}
this.update({
options: options
});
}
_canvasUpdate(time) {
var map = this.map;
if (!this.canvasLayer || this.stopAniamation) {
return;
}
var self = this;
var animationOptions = self.options.animation;
var context = this.getContext();
if (self.isEnabledTime()) {
if (time === undefined) {
this.clear(context);
return;
}
if (this.context === '2d') {
context.save();
context.globalCompositeOperation = 'destination-out';
context.fillStyle = 'rgba(0, 0, 0, .1)';
context.fillRect(0, 0, context.canvas.width, context.canvas.height);
context.restore();
}
} else {
this.clear(context);
}
if (this.context === '2d') {
for (var key in self.options) {
context[key] = self.options[key];
}
} else {
context.clear(context.COLOR_BUFFER_BIT);
}
if (
(self.options.minZoom && map.getZoom() < self.options.minZoom) ||
(self.options.maxZoom && map.getZoom() > self.options.maxZoom)
) {
return;
}
var bounds = map.getBounds(),
dw = bounds.getEast() - bounds.getWest(),
dh = bounds.getNorth() - bounds.getSouth();
var resolutionX = dw / this.canvasLayer.canvas.width,
resolutionY = dh / this.canvasLayer.canvas.height;
// 一个像素是多少米
var zoomUnit = getMeterPerMapUnit('DEGREE') * resolutionX;
var center = map.getCenter();
var centerPx = map.project(center);
var dataGetOptions = {
transferCoordinate: function (coordinate) {
if (map.transform.rotationMatrix || self.context === '2d') {
var worldPoint = map.project(new mapboxgl.LngLat(coordinate[0], coordinate[1]));
return [worldPoint.x, worldPoint.y];
}
var pixel = [(coordinate[0] - center.lng) / resolutionX, (center.lat - coordinate[1]) / resolutionY];
return [pixel[0] + centerPx.x, pixel[1] + centerPx.y];
}
};
if (time !== undefined) {
dataGetOptions.filter = function (item) {
var trails = animationOptions.trails || 10;
return time && item.time > time - trails && item.time < time;
};
}
var data = self.dataSet.get(dataGetOptions);
this.processData(data);
// 兼容unit为'm'的情况
if (self.options.unit === 'm') {
if (self.options.size) {
self.options._size = self.options.size / zoomUnit;
}
if (self.options.width) {
self.options._width = self.options.width / zoomUnit;
}
if (self.options.height) {
self.options._height = self.options.height / zoomUnit;
}
} else {
self.options._size = self.options.size;
self.options._height = self.options.height;
self.options._width = self.options.width;
}
var worldPoint = map.project(new mapboxgl.LngLat(0, 0));
this.drawContext(context, data, self.options, worldPoint);
self.options.updateCallback && self.options.updateCallback(time);
}
init(options) {
var self = this;
self.options = options;
this.initDataRange(options);
this.context = self.options.context || '2d';
if (self.options.zIndex) {
this.canvasLayer && this.canvasLayer.setZIndex(self.options.zIndex);
}
this.initAnimator();
}
/**
* @function L.supermap.MapVRenderer.prototype.bindMapEvent
* @description 绑定鼠标移动事件。
*/
bindMapEvent() {
this.mapEvent = {
resizeEvent: this.resizeEvent.bind(this),
zoomStartEvent: this.zoomStartEvent.bind(this),
zoomEndEvent: this.zoomEndEvent.bind(this),
rotateStartEvent: this.rotateStartEvent.bind(this),
rotateEvent: this.rotateEvent.bind(this),
moveStartEvent: this.moveStartEvent.bind(this),
rotateEndEvent: this.rotateEndEvent.bind(this),
moveEvent: this.moveEvent.bind(this),
moveEndEvent: this.moveEndEvent.bind(this),
removeEvent: this.removeEvent.bind(this)
}
this.map.on('resize', this.mapEvent.resizeEvent);
this.map.on('zoomstart', this.mapEvent.zoomStartEvent);
this.map.on('zoomend', this.mapEvent.zoomEndEvent);
this.map.on('rotatestart', this.mapEvent.rotateStartEvent);
this.map.on('rotate', this.mapEvent.rotateEvent);
this.map.on('rotateend', this.mapEvent.rotateEndEvent);
// this.map.on('dragend', this.dragEndEvent.bind(this));
this.map.on('movestart', this.mapEvent.moveStartEvent);
this.map.on('move', this.mapEvent.moveEvent);
this.map.on('moveend', this.mapEvent.moveEndEvent);
this.map.on('remove', this.mapEvent.removeEvent);
}
/**
* @function L.supermap.MapVRenderer.prototype.unbindMapEvent
* @description 解绑鼠标移动事件。
*/
unbindMapEvent() {
this.map.off('resize', this.mapEvent.resizeEvent);
this.map.off('zoomstart', this.mapEvent.zoomStartEvent);
this.map.off('zoomend', this.mapEvent.zoomEndEvent);
this.map.off('rotatestart', this.mapEvent.rotateStartEvent);
this.map.off('rotate', this.mapEvent.rotateEvent);
this.map.off('rotateend', this.mapEvent.rotateEndEvent);
this.map.off('movestart', this.mapEvent.moveStartEvent);
this.map.off('move', this.mapEvent.moveEvent);
this.map.off('moveend', this.mapEvent.moveEndEvent);
this.map.off('remove', this.mapEvent.removeEvent);
}
/**
* @function L.supermap.MapVRenderer.prototype.destroy
* @description 释放资源。
*/
destroy() {
this.unbindMapEvent();
this.unbindEvent();
this.clearData();
this.animator && this.animator.stop();
this.animator = null;
this.canvasLayer = null;
}
/**
* @function MapvRenderer.prototype.addAnimatorEvent
* @description 添加动画事件。
*/
addAnimatorEvent() {}
/**
* @function MapvRenderer.prototype.removeEvent
* @description 移除事件。
*/
removeEvent() {
this.canvasLayer.mapContainer.removeChild(this.canvasLayer.canvas);
}
/**
* @function MapvRenderer.prototype.resizeEvent
* @description 调整事件。
*/
resizeEvent() {
this.canvasLayer.mapContainer.style.perspective = this.map.transform.cameraToCenterDistance + 'px';
var canvas = this.canvasLayer.canvas;
canvas.style.position = 'absolute';
canvas.style.top = 0 + 'px';
canvas.style.left = 0 + 'px';
var global$2 = typeof window === 'undefined' ? {} : window;
var devicePixelRatio = this.canvasLayer.devicePixelRatio = global$2.devicePixelRatio || 1;
canvas.width = parseInt(this.map.getCanvas().style.width) * devicePixelRatio;
canvas.height = parseInt(this.map.getCanvas().style.height) * devicePixelRatio;
if (!this.canvasLayer.mapVOptions.context || this.canvasLayer.mapVOptions.context == '2d') {
canvas.getContext('2d').scale(devicePixelRatio, devicePixelRatio);
}
canvas.style.width = this.map.getCanvas().style.width;
canvas.style.height = this.map.getCanvas().style.height;
}
moveEndEvent() {
this.stopAniamation = false;
var canvas = this.getContext().canvas;
canvas.style.transform = '';
this._canvasUpdate();
if (this._expectShow === true) {
this._show();
}
}
moveStartEvent() {
this.startPitch = this.map.getPitch();
this.startBearing = this.map.getBearing();
var startMovePoint = this.map.project(new mapboxgl.LngLat(0, 0));
this.startMoveX = startMovePoint.x;
this.startMoveY = startMovePoint.y;
if (this.animation) {
this.stopAniamation = true;
}
if (this.rotating || this.zooming) {
return;
}
this._expectShow = this.canvasLayer.canvas.style.display !== 'none';
if (this.map.getPitch() !== 0) {
this._hide();
}
}
moveEvent() {
this.canvasLayer.mapContainer.style.perspective = this.map.transform.cameraToCenterDistance + 'px';
var tPitch = this.map.getPitch() - this.startPitch;
var tBearing = -this.map.getBearing() + this.startBearing;
var endMovePoint = this.map.project(new mapboxgl.LngLat(0, 0));
var tMoveX = endMovePoint.x - this.startMoveX;
var tMoveY = endMovePoint.y - this.startMoveY;
var canvas = this.getContext().canvas;
canvas.style.transform =
'rotateX(' +
tPitch +
'deg)' +
' rotateZ(' +
tBearing +
'deg)' +
' translate3d(' +
tMoveX +
'px, ' +
tMoveY +
'px, 0px)';
}
zoomStartEvent() {
this.zooming = true;
this._hide();
}
zoomEndEvent() {
this.zooming = false;
}
rotateStartEvent() {
this.rotating = true;
if (this.map.getPitch() !== 0) {
this._hide();
}
}
rotateEvent() {
this.canvasLayer.mapContainer.style.perspective = this.map.transform.cameraToCenterDistance + 'px';
var tPitch = this.map.getPitch() - this.startPitch;
var tBearing = -this.map.getBearing() + this.startBearing;
var canvas = this.getContext().canvas;
canvas.style.transform = 'rotateX(' + tPitch + 'deg)' + ' rotateZ(' + tBearing + 'deg)';
}
rotateEndEvent() {
this.rotating = false;
}
/**
* @function MapvRenderer.prototype.clear
* @param {Object} context - 当前环境。
* @description 清除环境。
*/
clear(context) {
context &&
context.clearRect &&
context.clearRect(
0,
0,
parseInt(this.map.getCanvas().style.width),
parseInt(this.map.getCanvas().style.height)
);
}
/**
* @function MapvRenderer.prototype.draw
* @description 渲染绘制。
*/
draw() {
this._canvasUpdate();
}
_hide() {
this.canvasLayer.canvas.style.display = 'none';
}
_show() {
this.canvasLayer.canvas.style.display = 'block';
}
}