Add ImageIconEntity to Scene

doc/development/Scene-Schema.txt

@@ -19,7 +19,7 @@ start => <SCENE>
   id?: <ID>
   altitude_mode?: <ALTITUDE-MODE> = "absolute"
   visibility?: Boolean = true
-  <MODEL-CONTENT> | <MARKERLINE-CONTENT> | <PATH-CONTENT> | <TEXT-CONTENT> | <POLYGON-CONTENT> | <PIN-CONTENT>
+  <MODEL-CONTENT> | <MARKERLINE-CONTENT> | <PATH-CONTENT> | <TEXT-CONTENT> | <POLYGON-CONTENT> | <PIN-CONTENT> | <IMAGEICON-CONTENT>
 }
 
 <MODEL-CONTENT> =>
@@ -73,6 +73,12 @@ start => <SCENE>
   bg_color?: <PARAM-VEC3> = [0.35, 0.61, 0.81]
   font_family?: String = "sans-serif"
 
+<IMAGEICON-CONTENT> =>
+  type: "imageicon"
+  entries: [<IMAGEICON-ENTRY>*]
+  size?: <PARAM-VEC2> = [30, 30]
+  origin?: <PARAM-VEC2> = [0.5, 0.5]
+
 <TRANSFORM> => {
   position: <GEO-POINT>
   heading?: <PARAM-FLOAT> = 0
@@ -116,6 +122,13 @@ start => <SCENE>
   id?: <ID>
 }
 
+<IMAGEICON-ENTRY> => {
+  image_src: <URL>
+  position: <PARAM-VEC2>
+  size?: <PARAM-VEC2>
+  id?: <ID>
+}
+
 <BOUNDARY> => {
   type?: <BOUNDARY-TYPE> = "outer"
   points: <GEO-POINTS>

packages/mapray/src/SceneLoader.ts

@@ -12,6 +12,7 @@ import TextEntity from "./TextEntity";
 import ModelEntity from "./ModelEntity";
 import PolygonEntity from "./PolygonEntity";
 import PinEntity from "./PinEntity";
+import ImageIconEntity from "./ImageIconEntity";
 import GLEnv from "./GLEnv";
 import GltfTool from "./gltf/Tool";
 import Resource, { URLResource } from "./Resource";
@@ -228,6 +229,9 @@ class SceneLoader extends Loader {
                 case "pin":
                     entity = new PinEntity( scene, { json: item, refs: this._references } as PinEntity.Option);
                     break;
+                case "imageicon":
+                    entity = new ImageIconEntity( scene, { json: item, refs: this._references } as ImageIconEntity.Option);
+                    break;
                 default:
                     console.error( "mapray: unknown entity type: " + type );
                     break;