我有这些符号，用折线制作折线。我想隐藏并展示它们并隐藏/显示randoms。
是否有icon.hidden = true或lineSymbol.hide()？
// This example converts a polyline to a dashed line, by
// setting the opacity of the polyline to 0, and drawing an opaque symbol
// at a regular interval on the polyline.
function initMap() {
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 6,
center: {
lat: 20.291,
lng: 153.027
},
mapTypeId: google.maps.MapTypeId.TERRAIN
});
// [START region_polyline]
// Define a symbol using SVG path notation, with an opacity of 1.
var lineSymbol = {
path: google.maps.SymbolPath.CIRCLE,
strokeOpacity: 1,
fillOpacity: 1,
scale: 3
};
// Create the polyline, passing the symbol in the 'icons' property.
// Give the line an opacity of 0.
// Repeat the symbol at intervals of 20 pixels to create the dashed effect.
var line = new google.maps.Polyline({
path: [{
lat: 22.291,
lng: 153.027
}, {
lat: 18.291,
lng: 153.027
}],
strokeOpacity: 0,
icons: [{
icon: lineSymbol,
offset: '0',
repeat: '20px'
}],
map: map
});
// [END region_polyline]
}
google.maps.event.addDomListener(window, "load", initMap);
function hidePath(line) {
var count = 0;
var icons = line.get('icons');
for(var i = 0; i < icons.length-1; i++){
icons[i].fillOpacity = 0;
icons[i].strokeOpacity = 0;
}
}
var myVar;
function animateCircle(line) {
var count = 0;
myVar = window.setInterval(function() {
count = (count + 1) % 200;
var icons = line.get('icons');
for(var i = 0; i < icons.length-1; i++){
icons[i].fillOpacity = 0;
icons[i].strokeOpacity = 0;
line.set('icons', icons);
}
}, 1);
}
function stopAnimateCircle() {
clearInterval(myVar);
}html,
body {
height: 100%;
margin: 0;
padding: 0;
}
#map {
height: 100%;
}<script src="https://maps.googleapis.com/maps/api/js"></script>
<div id="map"></div>
答案 0 :(得分：1)
没有任何方式（目前）动态控制折线上的图标，
当您想要隐藏/显示或更改颜色时，一个选项是重置阵列。
下面的代码定义了一个图标数组（iconArray），它将其用作默认值，然后允许使用复选框显示/隐藏图标，您可以通过添加有效颜色来动态更改颜色文本框。
[概念证明小提琴[（http://jsfiddle.net/geocodezip/Lw3susjz/2/）
代码段
// This example converts a polyline to a dashed line, by
// setting the opacity of the polyline to 0, and drawing an opaque symbol
// at a regular interval on the polyline.
var line;
function initMap() {
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 6,
center: {
lat: 20.291,
lng: 153.027
},
mapTypeId: google.maps.MapTypeId.TERRAIN
});
// [START region_polyline]
// Define a symbol using SVG path notation, with an opacity of 1.
var lineSymbol = {
path: google.maps.SymbolPath.CIRCLE,
strokeOpacity: 0,
stokeColor: "#84479B",
fillOpacity: 1,
fillColor: "#84479B",
scale: 5
};
// Create the polyline, passing the symbol in the 'icons' property.
// Give the line an opacity of 0.
// Repeat the symbol at intervals of 20 pixels to create the dashed effect.
line = new google.maps.Polyline({
path: [{
lat: 22.291,
lng: 153.027
}, {
lat: 18.291,
lng: 153.027
}],
strokeOpacity: 0,
icons: iconsArray,
map: map
});
// [END region_polyline]
var checkboxes = document.getElementsByName('icons')
for (var i = 0; i < checkboxes.length; i++) {
google.maps.event.addDomListener(checkboxes[i], 'change', checkboxHandler);
}
}
google.maps.event.addDomListener(window, "load", initMap);
function checkboxHandler() {
var checkboxes = document.getElementsByName('icons');
var iconcolors = document.getElementsByName('iconcolor');
var tempIcons = [];
for (var i = 0; i < checkboxes.length; i++) {
if (checkboxes[i].checked) {
tempIcons.push(iconsArray[i]);
var color = iconcolors[i].value;
if (color !== '') {
tempIcons[tempIcons.length - 1].icon.strokeColor = iconcolors[i].value;
tempIcons[tempIcons.length - 1].icon.fillColor = iconcolors[i].value;
}
}
}
line.set("icons", tempIcons);
}
var iconsArray = [{
icon: {
path: google.maps.SymbolPath.CIRCLE,
strokeOpacity: 0,
stokeColor: "#84479B",
fillOpacity: 1,
fillColor: "#84479B",
scale: 5
},
offset: '15px',
}, {
icon: {
path: google.maps.SymbolPath.CIRCLE,
strokeOpacity: 0,
stokeColor: "red",
fillOpacity: 1,
fillColor: "red",
scale: 5
},
offset: '30px',
}, {
icon: {
path: google.maps.SymbolPath.CIRCLE,
strokeOpacity: 0,
stokeColor: "blue",
fillOpacity: 1,
fillColor: "blue",
scale: 5
},
offset: '45px',
}, {
icon: {
path: google.maps.SymbolPath.CIRCLE,
strokeOpacity: 0,
stokeColor: "green",
fillOpacity: 1,
fillColor: "green",
scale: 5
},
offset: '60px',
}, {
icon: {
path: google.maps.SymbolPath.CIRCLE,
strokeOpacity: 0,
stokeColor: "yellow",
fillOpacity: 1,
fillColor: "yellow",
scale: 5
},
offset: '75px',
}, {
icon: {
path: google.maps.SymbolPath.CIRCLE,
strokeOpacity: 0,
stokeColor: "orange",
fillOpacity: 1,
fillColor: "orange",
scale: 5
},
offset: '90px',
}];html,
body {
height: 100%;
margin: 0;
padding: 0;
}
#map {
height: 100%;
}<script src="https://maps.googleapis.com/maps/api/js"></script>
<label>1</label>
<input type="checkbox" id="purple" name="icons" checked="checked" />
<input type="text" name="iconcolor" />
<br />
<label>2</label>
<input type="checkbox" id="red" name="icons" checked="checked" />
<input type="text" name="iconcolor" />
<br />
<label>3</label>
<input type="checkbox" id="blue" name="icons" checked="checked" />
<input type="text" name="iconcolor" />
<br />
<label>4</label>
<input type="checkbox" id="green" name="icons" checked="checked" />
<input type="text" name="iconcolor" />
<br />
<label>5</label>
<input type="checkbox" id="yellow" name="icons" checked="checked" />
<input type="text" name="iconcolor" />
<br />
<label>6</label>
<input type="checkbox" id="orange" name="icons" checked="checked" />
<input type="text" name="iconcolor" />
<br />
<div id="map"></div>