fix: -0

public/static/lib/potree/potree.js

@@ -60818,7 +60818,7 @@
 			},
 			//WEBGL2: {
 			//	isSupported: function(){
-			//		return gl instanceof WebGL2RenderingContext;
+			//		return  typeof WebGL2RenderingContext != 'undefined' && gl instanceof WebGL2RenderingContext;
 			//	}
 			//},
 			precision: precision
@@ -66951,7 +66951,7 @@ void main()
 				}
 
 				// uniform blocks
-				if(gl instanceof WebGL2RenderingContext){ 
+				if(typeof WebGL2RenderingContext != 'undefined' && gl instanceof WebGL2RenderingContext){ 
 					let numBlocks = gl.getProgramParameter(program, gl.ACTIVE_UNIFORM_BLOCKS);
 
 					for (let i = 0; i < numBlocks; i++) {
@@ -70509,7 +70509,7 @@ void main()
 	                }
 	            }
 
-	            return gl instanceof WebGL2RenderingContext || gl.getExtension('EXT_frag_depth'); //shader中的GL_EXT_frag_depth需要判断一下detectIOS吗。。
+	            return (typeof WebGL2RenderingContext != 'undefined' && gl instanceof WebGL2RenderingContext) || gl.getExtension('EXT_frag_depth'); //shader中的GL_EXT_frag_depth需要判断一下detectIOS吗。。
 	        }
 	    }; 
 	    
@@ -75356,7 +75356,7 @@ void main()
 	const geo = new PlaneBufferGeometry(1,1);
 	class Sprite$2 extends Mesh{
 	    
-	    constructor(options){  
+	    constructor(options={}){  
 	        super(geo, options.mat || new DepthBasicMaterial(options));/* ({map:options.map, useDepth:options.useDepth})) */
 	         
 	        this.root = options.root || this;
@@ -75364,6 +75364,8 @@ void main()
 	        this.pickOrder = options.pickOrder || 0;
 	        this.sizeInfo = options.sizeInfo;
 	        this.dontFixOrient = options.dontFixOrient;
+	        this.options = options;
+	        this.lineDir = options.lineDir;
 	        
 	        this.root.matrixAutoUpdate = false;
 	        this.matrixMap = new Map();
@@ -75455,9 +75457,34 @@ void main()
 	        let camera = e.viewport.camera;
 	        //rotation
 	        
-	        if(!this.dontFixOrient){        //orthoCamera一般要加dontFixOrient  
+	        if(!this.dontFixOrient){        //orthoCamera一般要加dontFixOrient 
+	            let orient2d;
+	        
+	            if(this.lineDir){
+	                /* let r1 = Potree.Utils.getPos2d(new THREE.Vector3, camera, viewer.renderArea, e.viewport);
+	                let r2 = Potree.Utils.getPos2d(this.lineDir, camera, viewer.renderArea, e.viewport); */
+	                
+	                let r1 = Potree.Utils.getPos2d(this.lineDir[0], camera, viewer.renderArea, e.viewport);
+	                let r2 = Potree.Utils.getPos2d(this.lineDir[1], camera, viewer.renderArea, e.viewport);
+	                
+	                if(!r1.trueSide || !r2.trueSide){
+	                    return console.log('!r1.trueSide || !r2.trueSide', )
+	                }
+	                let p1 = r1.pos,  p2 = r2.pos;
+	                let vec = new Vector2().subVectors(p1,p2);
+	                let angle = vec.angle(); 
+	                let axis = p1.x < p2.x ? 1 : -1; 
+	                orient2d = new Quaternion().setFromAxisAngle(new Vector3(0,0,1), axis*angle);
+	                console.log(this.parent.text, MathUtils$1.radToDeg(angle), axis );
+	            }
+	        
 	            let parentQua = this.root.parent.getWorldQuaternion(new Quaternion);
 	            this.root.quaternion.multiplyQuaternions(parentQua.invert(),camera.quaternion);    //乘上parentQua.invert()是为了中和掉父结点的qua，使只剩下camera.quaternion
+	        
+	            if(this.lineDir){ 
+	                this.root.quaternion.multiply(orient2d); 
+	            }
+	        
 	        }
 	        
 	        //scale
@@ -81048,6 +81075,7 @@ void main()
 	                if(edgeLabel.visible){
 	                    setEdgeLabel(edgeLabel,point,nextPoint,distance);
 	                }  
+	                edgeLabel.sprite.lineDir = [point,nextPoint];//new THREE.Vector3().subVectors(point,nextPoint)
 	            }
 	        } 
 
@@ -141223,8 +141251,10 @@ ENDSEC
 	    }else {
 	        path = `${Potree.settings.urls.prefix1}/vision.json`; 
 	    }
-	     
-	    return loadFile(path, { }, callback) 
+	    Potree.getRealUrl(path, (path)=>{
+	        loadFile(path, { }, callback);  
+	    });
+	    //return loadFile(path, { }, callback) 
 	    
 	}