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Copy pathVideoMapDraw.js
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949 lines (882 loc) · 26.4 KB
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import proj4 from 'proj4';
import mapboxgl from 'mapbox-gl';
import distance from '@turf/distance';
import center from '@turf/center';
import area from '@turf/area';
import { Lang } from '@supermapgis/iclient-common/lang/Lang';
const SOURCE_ID = 'sm-videomap-draw';
const PREVIEW_SOURCE_ID = 'sm-videomap-draw-preview';
const DRAW_TYPES = ['Point', 'LineString', 'Polygon'];
const SELECT_COLOR = '#fbb03b';
const DEFAULT_COLOR = '#1890ff';
const MEASURE_LABEL_MS = 3000;
const DEFAULT_STYLES = {
point: {
'circle-radius': 5,
'circle-color': DEFAULT_COLOR,
'circle-opacity': 1,
'circle-stroke-width': 1,
'circle-stroke-color': '#fff'
},
line: {
'line-color': DEFAULT_COLOR,
'line-width': 2,
'line-opacity': 1
},
polygon: {
'fill-color': DEFAULT_COLOR,
'fill-opacity': 0.25,
'line-color': DEFAULT_COLOR,
'line-width': 2,
'line-opacity': 1
},
selected: {
color: SELECT_COLOR
}
};
// 选中时覆盖的颜色属性
const SELECTABLE_COLOR_PROPS = ['circle-color', 'line-color', 'fill-color'];
const PREVIEW_PROPS = {
point: ['circle-radius', 'circle-color', 'circle-opacity', 'circle-stroke-width', 'circle-stroke-color'],
line: ['line-color', 'line-width', 'line-opacity', 'line-dasharray'],
polygon: ['fill-color', 'fill-opacity', 'line-color', 'line-width', 'line-opacity', 'line-dasharray']
};
function mergeStyles(base, styles) {
const merged = {};
Object.keys(DEFAULT_STYLES).forEach((key) => {
const custom = styles && styles[key];
const allowed = DEFAULT_STYLES[key];
merged[key] = Object.assign({}, base[key]);
if (custom && typeof custom === 'object') {
Object.keys(custom).forEach((prop) => {
if (Object.prototype.hasOwnProperty.call(allowed, prop) || prop === 'line-dasharray') {
merged[key][prop] = custom[prop];
}
});
}
});
merged.preview = {};
Object.keys(PREVIEW_PROPS).forEach((key) => {
const custom = styles && styles.preview && styles.preview[key];
merged.preview[key] = Object.assign({}, base.preview && base.preview[key]);
if (custom && typeof custom === 'object') {
PREVIEW_PROPS[key].forEach((prop) => {
if (custom[prop] !== undefined) {
merged.preview[key][prop] = custom[prop];
}
});
}
});
return merged;
}
function buildPaint(styles, group, prefixes) {
const styleGroup = styles[group];
const paint = {};
Object.keys(styleGroup).forEach((prop) => {
if (prefixes.some((prefix) => prop.indexOf(prefix) === 0)) {
paint[prop] =
SELECTABLE_COLOR_PROPS.indexOf(prop) > -1 ? paintBySelected(styleGroup[prop], styles.selected.color) : styleGroup[prop];
}
});
return paint;
}
const MODE_SIMPLE_SELECT = 'simple_select';
const MODE_DIRECT_SELECT = 'direct_select';
const MODE_DRAW_POINT = 'draw_point';
const MODE_DRAW_LINE_STRING = 'draw_line_string';
const MODE_DRAW_POLYGON = 'draw_polygon';
const TYPE_TO_MODE = {
Point: MODE_DRAW_POINT,
LineString: MODE_DRAW_LINE_STRING,
Polygon: MODE_DRAW_POLYGON
};
const MODE_TO_TYPE = {
[MODE_DRAW_POINT]: 'Point',
[MODE_DRAW_LINE_STRING]: 'LineString',
[MODE_DRAW_POLYGON]: 'Polygon'
};
function emptyCollection() {
return { type: 'FeatureCollection', features: [] };
}
function sameCoord(a, b) {
return a && b && a[0] === b[0] && a[1] === b[1] && (a[2] || 0) === (b[2] || 0);
}
function toDrawCoord(spatial) {
if (!spatial || spatial.length < 2) {
return null;
}
const lngLat = proj4('EPSG:3857', 'EPSG:4326', [spatial[0], spatial[1]]);
if (spatial.length > 2) {
return [lngLat[0], lngLat[1], spatial[2]];
}
return lngLat;
}
function paintBySelected(idleColor, selectedColor) {
return ['case', ['boolean', ['get', 'selected'], false], selectedColor, idleColor];
}
function lngLatOf(coord) {
return [coord[0], coord[1]];
}
function formatLength(meters) {
if (meters >= 1000) {
return `${(meters / 1000).toFixed(2)}${Lang.i18n('text_videoMapUnitKilometer')}`;
}
return `${meters.toFixed(1)}${Lang.i18n('text_videoMapUnitMeter')}`;
}
function formatArea(squareMeters) {
if (squareMeters >= 1000000) {
return `${(squareMeters / 1000000).toFixed(2)}${Lang.i18n('text_videoMapUnitSquareKilometer')}`;
}
return `${squareMeters.toFixed(1)}${Lang.i18n('text_videoMapUnitSquareMeter')}`;
}
/**
* @class VideoMapDraw
* @private
* @classdesc 视频地图点、线、面标绘。顶点按真实地理坐标保存，随相机更新重投影。
* 交互模式对齐 mapbox-gl-draw：`simple_select` / `draw_point` / `draw_line_string` / `draw_polygon`，
* `direct_select` 预留给后续顶点编辑。
*/
export default class VideoMapDraw {
constructor(videoMap, options) {
this.videoMap = videoMap;
this._styles = mergeStyles(DEFAULT_STYLES, options && options.styles);
this.mode = null;
this.vertices = [];
this.features = [];
this.selectedIds = [];
this._featureSeq = 0;
this._onClick = this._onClick.bind(this);
this._onDblClick = this._onDblClick.bind(this);
this._onMouseMove = this._onMouseMove.bind(this);
this._onContextMenu = this._onContextMenu.bind(this);
this._onKeyDown = this._onKeyDown.bind(this);
this._measurePopups = [];
this._measureTimer = null;
}
activate() {
this._ensureLayers();
this._bind();
}
start(type) {
if (DRAW_TYPES.indexOf(type) === -1) {
throw new Error("draw type must be 'Point', 'LineString' or 'Polygon'");
}
this._clearMeasureLabels();
this._ensureLayers();
this._resetDraft();
this._setSelectedIds([]);
this.mode = type;
this._applyPreviewStyle();
this._setCursor('crosshair');
this._setDoubleClickZoom(type === 'Point');
this._bind();
this.videoMap.fire('drawstart', { type, mode: this.getUiMode() });
this._emitModeChange();
this._emitUpdate();
}
changeMode(mode, options) {
const type = MODE_TO_TYPE[mode];
if (type) {
this.start(type);
return;
}
if (mode === MODE_DIRECT_SELECT) {
const featureId = options && options.featureId;
this._enterSelect(featureId ? [featureId] : this.selectedIds.slice());
return;
}
this._enterSelect(options && options.featureIds);
}
finish() {
if (!this.mode || this.mode === 'Point') {
return null;
}
this._dedupeLastVertex();
const feature = this._createFeature(this.mode, this.vertices);
if (!feature) {
return null;
}
return this._completeFeature(feature);
}
cancel() {
const hadMode = !!this.mode;
this._resetDraft();
this.mode = null;
this._setCursor('');
this._setDoubleClickZoom(true);
if (hadMode) {
this.videoMap.fire('drawcancel');
this._emitModeChange();
this._emitUpdate();
}
}
clear() {
this._clearMeasureLabels();
this._resetDraft();
this.features = [];
this._setSelectedIds([]);
this._syncResult();
this.videoMap.fire('drawclear');
this._emitUpdate();
}
delete(ids) {
const targetIds = ids == null ? this.selectedIds.slice() : [].concat(ids);
if (!targetIds.length) {
return this.getData();
}
const idMap = {};
targetIds.forEach((id) => {
idMap[id] = true;
});
const removed = this.features.filter((feature) => idMap[feature.id]);
this.features = this.features.filter((feature) => !idMap[feature.id]);
this._setSelectedIds(this.selectedIds.filter((id) => !idMap[id]));
this._syncResult();
this.videoMap.fire('drawdelete', { features: removed, data: this.getData() });
this._emitUpdate();
return this.getData();
}
getData() {
return {
type: 'FeatureCollection',
features: this.features.slice()
};
}
getLiveData(cursor) {
return {
type: 'FeatureCollection',
features: this.features.concat(this._draftFeatures(cursor))
};
}
getMode() {
return this.mode;
}
getUiMode() {
return TYPE_TO_MODE[this.mode] || MODE_SIMPLE_SELECT;
}
getSelectedIds() {
return this.selectedIds.slice();
}
getSelected() {
const selected = {};
this.selectedIds.forEach((id) => {
selected[id] = true;
});
return {
type: 'FeatureCollection',
features: this.features.filter((feature) => selected[feature.id])
};
}
getStyles() {
return JSON.parse(JSON.stringify(this._styles));
}
setStyles(styles) {
this._styles = mergeStyles(this._styles, styles);
const map = this.videoMap.map;
if (!map || !map.getLayer(`${SOURCE_ID}-point`)) {
return;
}
const layers = {
[`${SOURCE_ID}-point`]: buildPaint(this._styles, 'point', ['circle-']),
[`${SOURCE_ID}-line`]: buildPaint(this._styles, 'line', ['line-']),
[`${SOURCE_ID}-fill`]: buildPaint(this._styles, 'polygon', ['fill-']),
[`${SOURCE_ID}-polygon-line`]: buildPaint(this._styles, 'polygon', ['line-'])
};
Object.keys(layers).forEach((layerId) => {
Object.keys(layers[layerId]).forEach((prop) => {
map.setPaintProperty(layerId, prop, layers[layerId][prop]);
});
});
this._applyPreviewStyle();
}
_applyPreviewStyle() {
const map = this.videoMap.map;
if (!map || !map.getLayer(`${PREVIEW_SOURCE_ID}-line`)) {
return;
}
const isPolygon = this.mode === 'Polygon';
const own = this._styles.preview[isPolygon ? 'polygon' : 'line'];
const fallback = isPolygon ? this._styles.polygon : this._styles.line;
const pick = (group, fallbackGroup, prop, defaultValue) => {
if (group[prop] !== undefined) {
return group[prop];
}
return fallbackGroup && fallbackGroup[prop] !== undefined ? fallbackGroup[prop] : defaultValue;
};
const lineId = `${PREVIEW_SOURCE_ID}-line`;
map.setPaintProperty(lineId, 'line-color', pick(own, fallback, 'line-color', DEFAULT_COLOR));
map.setPaintProperty(lineId, 'line-width', pick(own, fallback, 'line-width', 2));
map.setPaintProperty(lineId, 'line-opacity', pick(own, fallback, 'line-opacity', 1));
map.setPaintProperty(lineId, 'line-dasharray', pick(own, null, 'line-dasharray', [2, 1]));
if (map.getLayer(`${PREVIEW_SOURCE_ID}-fill`)) {
const fillId = `${PREVIEW_SOURCE_ID}-fill`;
map.setPaintProperty(fillId, 'fill-color', pick(own, this._styles.polygon, 'fill-color', DEFAULT_COLOR));
map.setPaintProperty(fillId, 'fill-opacity', pick(own, this._styles.polygon, 'fill-opacity', 0.25));
}
const pointOwn = this._styles.preview.point;
const pointId = `${PREVIEW_SOURCE_ID}-point`;
map.setPaintProperty(pointId, 'circle-radius', pick(pointOwn, null, 'circle-radius', 4));
map.setPaintProperty(pointId, 'circle-color', pick(pointOwn, null, 'circle-color', '#fff'));
map.setPaintProperty(pointId, 'circle-opacity', pick(pointOwn, null, 'circle-opacity', 1));
map.setPaintProperty(pointId, 'circle-stroke-width', pick(pointOwn, null, 'circle-stroke-width', 2));
map.setPaintProperty(
pointId,
'circle-stroke-color',
pick(pointOwn, null, 'circle-stroke-color', this._styles.point['circle-color'])
);
}
destroy() {
this._clearMeasureLabels();
this._unbind();
this.mode = null;
this.vertices = [];
this.features = [];
this.selectedIds = [];
this._setCursor('');
this._setDoubleClickZoom(true);
}
_enterSelect(featureIds) {
const hadMode = !!this.mode;
this._resetDraft();
this.mode = null;
this._setCursor('');
this._setDoubleClickZoom(true);
this._setSelectedIds(featureIds || []);
this._ensureLayers();
this._bind();
if (hadMode) {
this.videoMap.fire('drawcancel');
}
this._emitModeChange();
this._emitUpdate();
}
_ensureLayers() {
const videoMap = this.videoMap;
if (!videoMap.sourceCache[SOURCE_ID]) {
videoMap.addSource(SOURCE_ID, { type: 'geojson', data: emptyCollection() });
videoMap.addLayer({
id: `${SOURCE_ID}-fill`,
type: 'fill',
source: SOURCE_ID,
filter: ['==', '$type', 'Polygon'],
paint: buildPaint(this._styles, 'polygon', ['fill-'])
});
videoMap.addLayer({
id: `${SOURCE_ID}-polygon-line`,
type: 'line',
source: SOURCE_ID,
filter: ['==', '$type', 'Polygon'],
paint: buildPaint(this._styles, 'polygon', ['line-'])
});
videoMap.addLayer({
id: `${SOURCE_ID}-line`,
type: 'line',
source: SOURCE_ID,
filter: ['==', '$type', 'LineString'],
paint: buildPaint(this._styles, 'line', ['line-'])
});
videoMap.addLayer({
id: `${SOURCE_ID}-point`,
type: 'circle',
source: SOURCE_ID,
filter: ['==', '$type', 'Point'],
paint: buildPaint(this._styles, 'point', ['circle-'])
});
}
if (!videoMap.sourceCache[PREVIEW_SOURCE_ID]) {
videoMap.addSource(PREVIEW_SOURCE_ID, { type: 'geojson', data: emptyCollection() });
videoMap.addLayer({
id: `${PREVIEW_SOURCE_ID}-fill`,
type: 'fill',
source: PREVIEW_SOURCE_ID,
filter: ['==', '$type', 'Polygon'],
paint: {
'fill-color': DEFAULT_COLOR,
'fill-opacity': 0.25
}
});
videoMap.addLayer({
id: `${PREVIEW_SOURCE_ID}-line`,
type: 'line',
source: PREVIEW_SOURCE_ID,
paint: {
'line-color': DEFAULT_COLOR,
'line-width': 2,
'line-dasharray': [2, 1]
}
});
videoMap.addLayer({
id: `${PREVIEW_SOURCE_ID}-point`,
type: 'circle',
source: PREVIEW_SOURCE_ID,
paint: {
'circle-radius': 4,
'circle-color': '#fff',
'circle-stroke-width': 2,
'circle-stroke-color': DEFAULT_COLOR
}
});
}
}
_bind() {
const map = this.videoMap.map;
if (!map || this._bound) {
return;
}
map.on('click', this._onClick);
map.on('dblclick', this._onDblClick);
map.on('mousemove', this._onMouseMove);
map.on('contextmenu', this._onContextMenu);
window.addEventListener('keydown', this._onKeyDown);
this._bound = true;
}
_unbind() {
const map = this.videoMap && this.videoMap.map;
if (map && this._bound) {
map.off('click', this._onClick);
map.off('dblclick', this._onDblClick);
map.off('mousemove', this._onMouseMove);
map.off('contextmenu', this._onContextMenu);
}
window.removeEventListener('keydown', this._onKeyDown);
this._bound = false;
}
_onClick(e) {
if (!e) {
return;
}
if (!this.mode) {
this._onSelectClick(e);
return;
}
if (!e.lngLat) {
return;
}
if (e.originalEvent && e.originalEvent.button && e.originalEvent.button !== 0) {
return;
}
const coord = toDrawCoord(this.videoMap.toSpatialCoordinate(e.lngLat));
if (!coord) {
return;
}
if (this.mode === 'Point') {
this._completeFeature(this._createFeature('Point', [coord]));
return;
}
this.vertices.push(coord);
this._syncPreview();
}
_onSelectClick(e) {
const ids = this._queryFeatureIds(e);
this._setSelectedIds(ids.length ? [ids[0]] : []);
this._syncResult();
}
_completeFeature(feature) {
if (!feature) {
return null;
}
this._resetDraft();
this.mode = null;
this._setCursor('');
this._setDoubleClickZoom(true);
this.features.push(feature);
this._setSelectedIds([feature.id]);
this._syncResult();
const eventFeature = Object.assign({}, feature);
delete eventFeature.id;
this.videoMap.fire('drawcreate', { feature: eventFeature, data: this.getData() });
this._emitModeChange();
this._emitUpdate();
this._showMeasureLabels(feature);
return feature;
}
_showMeasureLabels(feature) {
this._clearMeasureLabels();
const map = this.videoMap && this.videoMap.map;
if (!map || !mapboxgl.Popup || !feature || !feature.geometry) {
return;
}
try {
const labels = this._measureLabels(feature);
labels.forEach((item) => {
const position = this._toVideoLngLat(item.coord);
if (!position) {
return;
}
const popup = new mapboxgl.Popup({
closeButton: false,
closeOnClick: false,
anchor: 'bottom',
offset: [0, -8],
className: 'sm-videomap-draw-measure'
});
popup.setLngLat(position).setText(item.text).addTo(map);
this._measurePopups.push(popup);
});
} catch (e) {
this._clearMeasureLabels();
return;
}
if (!this._measurePopups.length) {
return;
}
this._measureTimer = setTimeout(() => {
this._clearMeasureLabels();
}, MEASURE_LABEL_MS);
}
_measureLabels(feature) {
const { type, coordinates } = feature.geometry;
if (type === 'LineString') {
return this._lineMeasureLabels(coordinates);
}
if (type === 'Polygon') {
return this._polygonMeasureLabels(coordinates);
}
return [];
}
_lineMeasureLabels(coordinates) {
if (!coordinates || coordinates.length < 2) {
return [];
}
const labels = [{ coord: coordinates[0], text: Lang.i18n('text_videoMapMeasurementStart') }];
let sum = 0;
for (let i = 1; i < coordinates.length; i++) {
sum += distance(lngLatOf(coordinates[i - 1]), lngLatOf(coordinates[i]), { units: 'meters' });
const text =
i === coordinates.length - 1
? `${Lang.i18n('text_videoMapMeasurementTotalDistance')}${formatLength(sum)}`
: formatLength(sum);
labels.push({ coord: coordinates[i], text });
}
return labels;
}
_polygonMeasureLabels(coordinates) {
const ring = coordinates && coordinates[0];
if (!ring || ring.length < 4) {
return [];
}
const polygon = {
type: 'Feature',
properties: {},
geometry: {
type: 'Polygon',
coordinates: [ring.map(lngLatOf)]
}
};
const squareMeters = area(polygon);
const centroid = center(polygon);
if (!centroid || !centroid.geometry || !centroid.geometry.coordinates) {
return [];
}
return [
{
coord: centroid.geometry.coordinates,
text: `${Lang.i18n('text_videoMapMeasurementArea')}${formatArea(squareMeters)}`
}
];
}
_toVideoLngLat(coord) {
if (!coord || !this.videoMap || typeof this.videoMap.toVideoMapCoordinate !== 'function') {
return null;
}
const mercator = proj4('EPSG:4326', 'EPSG:3857', lngLatOf(coord));
const videoCoord = this.videoMap.toVideoMapCoordinate(mercator);
if (!videoCoord || videoCoord.length < 2 || !isFinite(videoCoord[0]) || !isFinite(videoCoord[1])) {
return null;
}
return videoCoord;
}
_clearMeasureLabels() {
if (this._measureTimer) {
clearTimeout(this._measureTimer);
this._measureTimer = null;
}
(this._measurePopups || []).forEach((popup) => {
if (popup && popup.remove) {
popup.remove();
}
});
this._measurePopups = [];
}
_queryFeatureIds(e) {
const map = this.videoMap.map;
if (!map || typeof map.queryRenderedFeatures !== 'function' || !e.point) {
return [];
}
const layers = [`${SOURCE_ID}-fill`, `${SOURCE_ID}-polygon-line`, `${SOURCE_ID}-line`, `${SOURCE_ID}-point`].filter((id) => map.getLayer(id));
if (!layers.length) {
return [];
}
const pad = 8;
const box = [
[e.point.x - pad, e.point.y - pad],
[e.point.x + pad, e.point.y + pad]
];
const queried = map.queryRenderedFeatures(box, { layers }) || [];
const ids = [];
queried.forEach((item) => {
const properties = item.properties || {};
const id = properties.drawId != null ? properties.drawId : item.id != null ? item.id : properties.id;
if (id != null && id !== '' && ids.indexOf(id) === -1) {
ids.push(id);
}
});
return ids;
}
_onDblClick(e) {
if (!this.mode || this.mode === 'Point') {
return;
}
if (e && e.preventDefault) {
e.preventDefault();
}
if (e && e.originalEvent && e.originalEvent.preventDefault) {
e.originalEvent.preventDefault();
}
this.finish();
}
_onMouseMove(e) {
if (!this.mode || this.mode === 'Point' || !this.vertices.length || !e || !e.lngLat) {
return;
}
const coord = toDrawCoord(this.videoMap.toSpatialCoordinate(e.lngLat));
if (!coord) {
return;
}
this._syncPreview(coord);
}
_onContextMenu(e) {
if (!this.mode || this.mode === 'Point') {
return;
}
if (e && e.preventDefault) {
e.preventDefault();
}
if (e && e.originalEvent && e.originalEvent.preventDefault) {
e.originalEvent.preventDefault();
}
this.vertices.pop();
this._syncPreview();
}
_onKeyDown(e) {
const tag = e.target && e.target.tagName;
if (tag === 'INPUT' || tag === 'TEXTAREA') {
return;
}
if (e.key === 'Escape') {
if (this.mode) {
this.cancel();
} else if (this.selectedIds.length) {
this._setSelectedIds([]);
this._syncResult();
}
return;
}
if ((e.key === 'Delete' || e.key === 'Backspace') && this.selectedIds.length && !this.mode) {
e.preventDefault();
this.delete();
return;
}
if (e.key === 'Enter' && this.mode) {
this.finish();
}
}
_createFeature(type, vertices) {
if (type === 'Point') {
if (!vertices.length) {
return null;
}
return this._feature('Point', vertices[0]);
}
if (type === 'LineString') {
if (vertices.length < 2) {
return null;
}
return this._feature('LineString', vertices.slice());
}
if (vertices.length < 3) {
return null;
}
const ring = vertices.slice();
if (!sameCoord(ring[0], ring[ring.length - 1])) {
ring.push(ring[0].slice());
}
return this._feature('Polygon', [ring]);
}
_feature(type, coordinates) {
this._featureSeq += 1;
const id = `videomap-draw-${this._featureSeq}`;
return {
type: 'Feature',
id,
properties: {},
geometry: { type, coordinates }
};
}
_syncResult() {
const source = this.videoMap.sourceCache[SOURCE_ID];
if (source) {
source.setData(this._displayData());
}
}
_displayData() {
const selected = {};
this.selectedIds.forEach((id) => {
selected[id] = true;
});
return {
type: 'FeatureCollection',
features: this.features.map((feature) => {
return {
type: 'Feature',
id: feature.id,
properties: Object.assign({}, feature.properties, {
selected: !!selected[feature.id],
drawId: feature.id
}),
geometry: feature.geometry
};
})
};
}
_syncPreview(cursor) {
const source = this.videoMap.sourceCache[PREVIEW_SOURCE_ID];
if (!source) {
return;
}
const vertices = cursor ? this.vertices.concat([cursor]) : this.vertices;
const features = [];
vertices.forEach((coord, index) => {
features.push(this._previewFeature(`p${index}`, 'Point', coord));
});
if (this.mode === 'LineString' && vertices.length >= 2) {
features.push(this._previewFeature('line', 'LineString', vertices));
}
if (this.mode === 'Polygon' && vertices.length >= 2) {
if (vertices.length >= 3) {
const ring = vertices.concat([vertices[0]]);
features.push(this._previewFeature('polygon', 'Polygon', [ring]));
} else {
features.push(this._previewFeature('line', 'LineString', vertices));
}
}
source.setData({ type: 'FeatureCollection', features });
this._emitUpdate(cursor);
}
_draftFeatures(cursor) {
if (!this.mode || this.mode === 'Point') {
return [];
}
const vertices = cursor ? this.vertices.concat([cursor]) : this.vertices.slice();
const features = [];
vertices.forEach((coord, index) => {
features.push({
type: 'Feature',
id: `videomap-draw-draft-p${index}`,
properties: { draft: true },
geometry: { type: 'Point', coordinates: coord }
});
});
if (this.mode === 'LineString' && vertices.length >= 2) {
features.push({
type: 'Feature',
id: 'videomap-draw-draft-line',
properties: { draft: true },
geometry: { type: 'LineString', coordinates: vertices }
});
}
if (this.mode === 'Polygon' && vertices.length >= 2) {
if (vertices.length >= 3) {
features.push({
type: 'Feature',
id: 'videomap-draw-draft-polygon',
properties: { draft: true },
geometry: { type: 'Polygon', coordinates: [vertices.concat([vertices[0]])] }
});
} else {
features.push({
type: 'Feature',
id: 'videomap-draw-draft-line',
properties: { draft: true },
geometry: { type: 'LineString', coordinates: vertices }
});
}
}
return features;
}
_emitUpdate(cursor) {
this.videoMap.fire('drawupdate', {
data: this.getData(),
live: this.getLiveData(cursor)
});
}
_emitModeChange() {
this.videoMap.fire('drawmodechange', {
mode: this.getUiMode(),
type: this.mode
});
}
_setSelectedIds(ids) {
const next = (ids || []).slice();
const same =
next.length === this.selectedIds.length && next.every((id, index) => id === this.selectedIds[index]);
this.selectedIds = next;
if (!same) {
this.videoMap.fire('drawselectionchange', {
features: this.getSelected().features
});
}
}
_previewFeature(id, type, coordinates) {
return {
type: 'Feature',
id,
properties: {},
geometry: { type, coordinates }
};
}
_resetDraft() {
this.vertices = [];
const source = this.videoMap.sourceCache && this.videoMap.sourceCache[PREVIEW_SOURCE_ID];
if (source) {
source.setData(emptyCollection());
}
}
_dedupeLastVertex() {
const n = this.vertices.length;
if (n >= 2 && sameCoord(this.vertices[n - 1], this.vertices[n - 2])) {
this.vertices.pop();
}
}
_setCursor(cursor) {
const map = this.videoMap.map;
if (!map || !map.getCanvas) {
return;
}
const canvas = map.getCanvas();
if (canvas && canvas.style) {
canvas.style.cursor = cursor;
}
}
_setDoubleClickZoom(enabled) {
const control = this.videoMap.map && this.videoMap.map.doubleClickZoom;
if (!control) {
return;
}
if (enabled) {
control.enable();
} else {
control.disable();
}
}
}
export {
DRAW_TYPES,
MODE_SIMPLE_SELECT,
MODE_DIRECT_SELECT,
MODE_DRAW_POINT,
MODE_DRAW_LINE_STRING,
MODE_DRAW_POLYGON,
TYPE_TO_MODE,
MODE_TO_TYPE
};