fix: !

public/lib/potree/potree.js

@@ -85446,7 +85446,7 @@ void main()
 	    },
 	    update: function(e) {
 	        this.funcs.forEach(function(t) {
-	            if(t.updateCount++ == 0 && t.ignoreFirstFrame) return //add start可能发生在一帧中任意时刻，而每次update的是在一帧中的固定时刻，所以从start到第一次update的时间并不是所传入的delta，该delta 是上一帧的update到这一帧的update的耗时。 故去掉了第一次的update，相当于延迟一帧再update.  其实可以直接setTimeout 1 ……
+	            if(t.updateCount++ == 0 && t.ignoreFirstFrame) return //add start可能发生在一帧中任意时刻，而每次update的是在一帧中的固定时刻，所以从start到第一次update的时间并不是所传入的delta，该delta 是上一帧的update到这一帧的update的耗时。 故去掉了第一次的update，相当于延迟一帧再update.   
 	            if (!(t.paused || (t.current += 1e3 * e, t.current < 0))){
 	                if (t.current >= t.duration && !t.cycling) {
 	                    var u = t.easing(1, 0, 1, 1);
@@ -92812,7 +92812,8 @@ void main()
                
                 
                 vec4 colorFromPano0 = vec4(0.0,0.0,0.0,0.0);
-                #if defined(usePanoMap0)//即progress < 1.0   通常是1
+                #if defined(usePanoMap0)
+                    //即progress < 1.0   通常是1
                     colorFromPano0=textureCube(pano0Map,vWorldPosition0N.xyz);
                 #endif
                 vec4 colorFromPano1=textureCube(pano1Map,vWorldPosition1N.xyz);
@@ -154893,29 +154894,46 @@ ENDSEC
 	                let tileset = object.runtime.getTileset();
 	               
 	                //TileHeader: tileset.root 
-	                //参见另一个工程 TileRenderer.js  preprocessNode
-	                //let boundingVolume = tileset.root.boundingVolume //这个坐标位置几万…… let data = boundingVolume.halfAxes  //但这个似乎是premultiply( transform );过后的，可能需还原下
+	                //参见另一个工程 TileRenderer.js  preprocessNode //这个坐标位置几万…… let data = boundingVolume.halfAxes  //但这个似乎是premultiply( transform );过后的，可能需还原下
 	                
-	                let json = tileset.tileset;  
+	                let json = tileset.tileset;   
 	                let box = json.root.boundingVolume.box;
 	                
-	                let center = new Vector3(box[0],box[1],box[2]);
-	                let boundSize = new Vector3( );  
-	                 
-	                // get the extents of the bounds in each axis
-	                let vecX = new Vector3( box[ 3 ], box[ 4 ], box[ 5 ] );
-	                let vecY = new Vector3( box[ 6 ], box[ 7 ], box[ 8 ] );
-	                let vecZ = new Vector3( box[ 9 ], box[ 10 ], box[ 11 ] );
-
-	                const scaleX = vecX.length();
-	                const scaleY = vecY.length();
-	                const scaleZ = vecZ.length();
-	                /* boundingBox.expandByPoint(center);
-	                boundingBox.expandByVector(new THREE.Vector3(scaleX,scaleY,scaleZ)) */
-	                 
-	                
-	                boundingBox.min.set( - scaleX, - scaleY, - scaleZ );
-	                boundingBox.max.set( scaleX, scaleY, scaleZ );
+	                if(box){
+	                    let center = new Vector3(box[0],box[1],box[2]);
+	                    let boundSize = new Vector3( );  
+	                     
+	                    // get the extents of the bounds in each axis
+	                    let vecX = new Vector3( box[ 3 ], box[ 4 ], box[ 5 ] );
+	                    let vecY = new Vector3( box[ 6 ], box[ 7 ], box[ 8 ] );
+	                    let vecZ = new Vector3( box[ 9 ], box[ 10 ], box[ 11 ] );
+
+	                    const scaleX = vecX.length();
+	                    const scaleY = vecY.length();
+	                    const scaleZ = vecZ.length();
+	                    /* boundingBox.expandByPoint(center);
+	                    boundingBox.expandByVector(new THREE.Vector3(scaleX,scaleY,scaleZ)) */
+	                     
+	                    
+	                    boundingBox.min.set( - scaleX, - scaleY, - scaleZ );
+	                    boundingBox.max.set( scaleX, scaleY, scaleZ );
+	                    
+	                }else if(json.root.boundingVolume.sphere){
+	                    let sphereData = json.root.boundingVolume.sphere;
+	                    let center = new Vector3(...sphereData);
+	                    let radius = sphereData[3];
+	                    /* let sphere = new THREE.Sphere(center, radius) 
+	                    let box = sphere.getBoundingBox()
+	                    boundingBox.copy(box) */
+	                     
+	                    boundingBox.min.set( - radius, - radius, - radius );
+	                    boundingBox.max.set( radius, radius, radius );
+	                    
+	                    
+	                    
+	                }else {
+	                    return console.error('json boundingVolume 缺少信息') 
+	                }
 	                
 	                //中心点居然没用。可能是漏用了什么信息，也许这和LVBADUI_qp是散的有关。
 	                console.log('3d tiles json',json);