worked on signal-strength-estimation

add this information to grid nodes
evaluate this information
new test-cases

grid/factory/GridImportance.h

@@ -159,12 +159,12 @@ public:
 	template <typename T> bool isDoor( T& nSrc, std::vector<T*> neighbors ) {
 
 		MiniMat2 m;
-		Point3 center = nSrc;
+		Point3 center = nSrc.inCentimeter();
 
 		// calculate the centroid of the nSrc's nearest-neighbors
 		Point3 centroid(0,0,0);
 		for (const T* n : neighbors) {
-			centroid = centroid + (Point3)*n;
+			centroid = centroid + n->inCentimeter();
 		}
 		centroid /= neighbors.size();
 
@@ -174,7 +174,7 @@ public:
 		// build covariance of the nearest-neighbors
 		int used = 0;
 		for (const T* n : neighbors) {
-			Point3 d = (Point3)*n - center;
+			Point3 d = n->inCentimeter() - center;
 			if (d.length() > 100) {continue;}	// radius search
 			m.addSquared(d.x, d.y);
 			++used;