support multiple clip regions; cleanup

.vscode/launch.json

@@ -7,13 +7,14 @@
 			"name": "Launch Program",
 			"restart": false,
 			"program": "${workspaceFolder}/src/potree_server.js"
-		},
+		}
+		//,
 		//{
 		//	"type": "node",
 		//	"request": "launch",
 		//	"name": "Launch Program",
 		//	"restart": false,
-		//	"program": "${workspaceFolder}/src/test.js"
+		//	"program": "${workspaceFolder}/src/test2.js"
 		//}
 	]
 }

src/Plane.js

@@ -4,19 +4,30 @@
 // [1] https://github.com/mrdoob/three.js/blob/dev/src/math/Plane.js
 //
 
+let Vector3 = require("./Vector3.js").Vector3;
+
 
 class Plane{
 
 	constructor(normal, distance){
-		this.normal = normal;
+		this.normal = (normal !== undefined) ? normal : new Vector3(0, 0, 0);
 		this.distance = distance;
 	}
 
+	setFromNormalAndCoplanarPoint(normal, point){
+		this.normal.copy(normal);
+		this.distance = -point.dot(this.normal);
+
+		return this;
+	}
+
 	distanceToPoint(point){
 		let distance = this.normal.dot(point) + this.distance;
 		return distance;
 	}
 
+
+
 }
 
 module.exports.Plane = Plane;

src/RegionFilter.js

@@ -322,7 +322,7 @@ async function traversePointcloud(path){
 				let isInside = clipRegion.containsPoint(vec);
 
 				if(isInside){
-					outOffset = i * lasRecordLength;
+					outOffset = insideThis * lasRecordLength;
 
 					let ux = (x - boundingBox.min.x) / cloudjs.scale;
 					let uy = (y - boundingBox.min.y) / cloudjs.scale;