在城市规划中，用色彩强调感兴趣的房屋十分重要。
var map = new WebMap({
portalItem:{id:"03a9607d96244883af64c7f8c7e5de1b"}
});
var view = new SceneView({
container:"viewDiv",
map:map
});
var layer = new SceneLayer({
portalItem:{id:"5ecba5273b2d41ff9f6f1eb33f238d18"}
});
map.add(layer);
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function setSymbol(){
return {
type:"unique-value",
field:"usage",
defaultSymbol:{
type:"mesh-3d",
symbol:{
type:"fill",
material:{
color:[230, 230, 230, 0.7],
colorMixMode:"replace"
}
}
},
uniqueValueInfos:[{
value:"general or commerial",
label:"commerial building",
symbol:{
type:"mesh-3d",
symbolLayers:[{
type:"fill",
material:{
color:color,
colorMixMode:colorMixMode
}
}]
}
}]
}
}
function setRenderer(type){
if(type === "origin"){
layer.renderer = null;
}
else if (type === "select"){
layer.renderer = setSymbol(null,null);
}
else if(type === "emphasize"){
layer.renderer = setSymbol("skyblue","tint");
}
else{
var colorMixMode = (type === "desaturate")?"tint":"replace";
layer.renderer = {
type:"simple",
symbol:{
type:"mesh-3d",
symbolLayers:{
type:"fill",
material:{color:"white",colorMixMode:colorMixMode}
}
}
}
}
}
document.getElementById("colorMixMode").addEventListener("change",function(event){
setRenderer(event.target.id);
});