WME Simplify Place Geometry

Simplifies geometry of area places in WME
目前为 2015-02-26 提交的版本。查看最新版本。
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// ==UserScript==
// @name         WME Simplify Place Geometry
// @description  Simplifies geometry of area places in WME
// @version      0.9.1
// @author       SAR85
// @grant		 none
// @include      https://www.waze.com/editor/*
// @include      https://www.waze.com/*/editor/*
// @include      https://editor-beta.waze.com/*
// @namespace https://gf.qytechs.cn/users/9321
// ==/UserScript==

/* Global vars */
var simplifyVersion = "0.9.1";
var simplifyChanges = "WME Simplify Area Geometry has been updated to version " + simplifyVersion + ". The shortcut has changed to 'shift+j' for simplifying geometry.  A feature has been added to clear geometry of areas.  The shortcut is 'ctrl+shift+j' to clear geometry.";
var simpUpdateFeatureGeometry = require("Waze/Action/UpdateFeatureGeometry");
var simpUpdateObject = require("Waze/Action/UpdateObject");
	
function simpBootstrap() {
	var bGreasemonkeyServiceDefined     = false;
	try
	{
		if ("object" === typeof Components.interfaces.gmIGreasemonkeyService)
		{
			bGreasemonkeyServiceDefined = true;
		}
	}
	catch (err)
	{
		// Ignore.
	}
	if ( "undefined" === typeof unsafeWindow  ||  ! bGreasemonkeyServiceDefined)
	{
		unsafeWindow    = ( function ()
		{
			var dummyElem   = document.createElement('p');
			dummyElem.setAttribute ('onclick', 'return window;');
			return dummyElem.onclick ();
		} ) ();
	}
	/* begin running the code! */
	window.setTimeout(simpInit, 2000);
	/*doesn't work in FF: $(document).ready(simpInit); */
}

function addSimplifyFunc() {
	/*
	 (c) 2013, Vladimir Agafonkin
	 Simplify.js, a high-performance JS polyline simplification library
	 mourner.github.io/simplify-js
	*/
	(function () { 'use strict';

		// to suit your point format, run search/replace for '.x' and '.y';
		// for 3D version, see 3d branch (configurability would draw significant performance overhead)

		// square distance between 2 points
		function getSqDist(p1, p2) {

			var dx = p1.x - p2.x,
				dy = p1.y - p2.y;

			return dx * dx + dy * dy;
		}

		// square distance from a point to a segment
		function getSqSegDist(p, p1, p2) {

			var x = p1.x,
				y = p1.y,
				dx = p2.x - x,
				dy = p2.y - y;

			if (dx !== 0 || dy !== 0) {

				var t = ((p.x - x) * dx + (p.y - y) * dy) / (dx * dx + dy * dy);

				if (t > 1) {
					x = p2.x;
					y = p2.y;

				} else if (t > 0) {
					x += dx * t;
					y += dy * t;
				}
			}

			dx = p.x - x;
			dy = p.y - y;

			return dx * dx + dy * dy;
		}
		// rest of the code doesn't care about point format

		// basic distance-based simplification
		function simplifyRadialDist(points, sqTolerance) {

			var prevPoint = points[0],
				newPoints = [prevPoint],
				point;

			for (var i = 1, len = points.length; i < len; i++) {
				point = points[i];

				if (getSqDist(point, prevPoint) > sqTolerance) {
					newPoints.push(point);
					prevPoint = point;
				}
			}

			if (prevPoint !== point) newPoints.push(point);

			return newPoints;
		}

		// simplification using optimized Douglas-Peucker algorithm with recursion elimination
		function simplifyDouglasPeucker(points, sqTolerance) {

			var len = points.length,
				MarkerArray = typeof Uint8Array !== 'undefined' ? Uint8Array : Array,
				markers = new MarkerArray(len),
				first = 0,
				last = len - 1,
				stack = [],
				newPoints = [],
				i, maxSqDist, sqDist, index;

			markers[first] = markers[last] = 1;

			while (last) {

				maxSqDist = 0;

				for (i = first + 1; i < last; i++) {
					sqDist = getSqSegDist(points[i], points[first], points[last]);

					if (sqDist > maxSqDist) {
						index = i;
						maxSqDist = sqDist;
					}
				}

				if (maxSqDist > sqTolerance) {
					markers[index] = 1;
					stack.push(first, index, index, last);
				}

				last = stack.pop();
				first = stack.pop();
			}

			for (i = 0; i < len; i++) {
				if (markers[i]) newPoints.push(points[i]);
			}

			return newPoints;
		}

		// both algorithms combined for awesome performance
		function simplify(points, tolerance, highestQuality) {

			if (points.length <= 1) return points;

			var sqTolerance = tolerance !== undefined ? tolerance * tolerance : 1;

			points = highestQuality ? points : simplifyRadialDist(points, sqTolerance);
			points = simplifyDouglasPeucker(points, sqTolerance);

			return points;
		}

		// export as AMD module / Node module / browser or worker variable
		if (typeof define === 'function' && define.amd) define(function() { return simplify; });
		else if (typeof module !== 'undefined') module.exports = simplify;
		else if (typeof self !== 'undefined') self.simplify = simplify;
		else window.simplify = simplify;

	})();
}

function simpInit() {
	/* HTML */
 	var tab = '<li><a href="#sidepanel-simplifyarea" data-toggle="tab" id="simplifytab">Simplify Area</a></li>';
	var content = '<div class="tab-pane" id="sidepanel-simplifyarea"><h1 style="display: block; position:relative; margin-top: -10px; margin-bottom: 10px">Simplify Area Place Geometry</h1><hr><p>Simplification factor:</p><p>0<input type="range" id="simpE" step="1" min="1" max="100" defaultValue="50"></input>100</p><p>Press "shift+j" to simplify or "ctrl-shift-j" to clear the geometry of a selected area place.</p></div>';
	/* Initialize simplification library */
	addSimplifyFunc();
	/* Add HTML to page */
	$('h2 + ul.nav-tabs').append(tab);
	$('h2 + ul.nav-tabs + .tab-content').append(content);
	/* Add functions to page */
	self.simplifyFeatureGeometry = simplifyFeatureGeometry;
	self.clearFeatureGeometry = clearFeatureGeometry;
	/* Shortcut key = shift+j for simplifying */
	W.accelerators.addAction('simplifyFeatureGeometry', {group: "editing"});
	W.accelerators.events.register('simplifyFeatureGeometry',null,function(){simplifyFeatureGeometry()});
	W.accelerators.registerShortcuts({'S+j': "simplifyFeatureGeometry"});
	/* Shortcut key = ctrl-shift-j for clearing */
	W.accelerators.addAction('clearFeatureGeometry', {group: "editing"});
	W.accelerators.events.register('clearFeatureGeometry',null,function(){clearFeatureGeometry()});
	W.accelerators.registerShortcuts({'CS+j': "clearFeatureGeometry"});
	console.log("WME Simplify Area Geometry Initialized");
	/* Update Alert */
	if (window.localStorage.simplifyVersion == 'undefined' || window.localStorage.simplifyVersion !== simplifyVersion) {
		alert(simplifyChanges);
		window.localStorage.simplifyVersion = simplifyVersion;
	}
}

function simplifyFeatureGeometry(e) {
    if (!W.selectionManager.hasSelectedItems() || W.selectionManager.selectedItems[0].model.type !== "venue" || !W.selectionManager.selectedItems[0].model.isGeometryEditable() || !W.selectionManager.selectedItems[0].model.geometry instanceof OpenLayers.Geometry.Polygon) return;
	e = e || $('#simpE').val();
    var place = W.selectionManager.selectedItems[0];
    var oldGeometry = place.geometry.clone();
    var newGeometry = oldGeometry.clone();
    newGeometry.components[0].components = simplify(oldGeometry.components[0].components, e, false);
    if (newGeometry.components[0].components.length < oldGeometry.components[0].components.length) {
		W.model.actionManager.add(new simpUpdateFeatureGeometry(place.model,W.model.venues,oldGeometry,newGeometry));
		console.log("WME Simplify Area Geometry: " + place.model.attributes.name + " simplified from " + oldGeometry.components[0].components.length + " to " + newGeometry.components[0].components.length + " geo nodes using factor " + e + ".");
	} else {
		console.log("Geo nodes cannot be simplified from " + oldGeometry.components[0].components.length + " to " + newGeometry.components[0].components.length + ".");
	}
}

function clearFeatureGeometry() {
    var newGeometry;
    var venue = W.selectionManager.selectedItems[0].model;
    var newEntryExitPoint = {entry: true, exit: true};
    var oldGeometry = venue.geometry;

    if (oldGeometry.components[0].components.length > 4) {
        newGeometry = oldGeometry.getBounds().toGeometry();
        if (newGeometry.getArea() > 160) newGeometry.resize(0.5,newGeometry.getCentroid());
        newEntryExitPoint.point = newGeometry.getCentroid();
        W.model.actionManager.add(new simpUpdateFeatureGeometry(venue,W.model.venues,oldGeometry,newGeometry));
        W.model.actionManager.add(new simpUpdateObject(venue,{entryExitPoints: [newEntryExitPoint]}));
    }
}

simpBootstrap();
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