performance enhancements

memory enhancements
prevent starting sensors more than once
fix for wifi lag issues
map scaling for huge buildings

ui/map/3D/elements/ColorPoints.h

@@ -10,6 +10,7 @@
 //#include "../gl/GLTriangles.h"
 #include "../Renderable.h"
 
+#include "../../../../Settings.h"
 #include "../../../../nav/Node.h"
 
 class ColorPoints : public Renderable {
@@ -31,6 +32,9 @@ public:
 
 		points.clear();
 
+		// do not display?
+		if (grid->getNumNodes() > Settings::MapView3D::maxColorPoints) {return;}
+
 		float min = +INFINITY;
 		float max = -INFINITY;
 
@@ -62,6 +66,9 @@ public:
 
 		points.clear();
 
+		// do not display?
+		if (particles.size() > Settings::MapView3D::maxColorPoints) {return;}
+
 		// group particles by grid-point
 		std::unordered_map<GridPoint, float> weights;
 		for (const K::Particle<T>& p : particles) {