First commit

engine/boundingBox.js

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+/*
+ * Copyright 2013, kaj dijkstra , 
+ * Author, Kaj Dijkstra.
+ * All rights reserved.
+ *
+ */
+  import {matrix3, vector3} from './math.js';
+
+/**
+ * Boundingbox
+**/
+class boundingBox {
+	maxExtent = [0, 0, 0];
+	minExtent = [0, 0, 0];
+	intersectionVector;
+
+	/**
+	 * make boundingbox as big as point cloud
+	 * @param {(array)} points
+	**/
+	fitBoxToPoints_( points, rotationMatrix ) {
+
+	  var minVector;
+
+	  for (var index = 0; index < 3; ++index) {
+		  
+		this.maxExtent[index] = this.minExtent[index] = points[index];
+
+		for (var i = 1; i < points.length / 3; ++i) {
+			
+			
+			var point = [points[i * 3], points[(i * 3) + 1], points[(i * 3) + 2]] ;
+			
+			if(rotationMatrix){
+				var translation = rotationMatrix[3];
+				
+				if(translation) {
+					point = vector3.add([translation[0], translation[1], translation[2]], point);
+				}
+				
+				point = matrix3.transformPoint(rotationMatrix, point);
+			
+			
+			}
+			//if(this.minExtent[index] > point[i] && index == 1)
+			//var minVector = point;
+
+			this.minExtent[index] = Math.min(this.minExtent[index], point[index]);
+			this.maxExtent[index] = Math.max(this.maxExtent[index], point[index]);
+		}
+	  }
+	   
+	  this.intersectionVector = minVector;
+
+	  this.valid = true;
+	}
+}
+
+export {boundingBox as default};