huge commit

- worked on about everything
- grid walker using plugable modules
- wifi models
- new distributions
- worked on geometric data-structures
- added typesafe timestamps
- worked on grid-building
- added sensor-classes
- added sensor analysis (step-detection, turn-detection)
- offline data reader
- many test-cases

grid/walk/v2/modules/WalkModule.h

@@ -0,0 +1,39 @@
+#ifndef WALKMODULE_H
+#define WALKMODULE_H
+
+#include "../../../Grid.h"
+
+/** base-class for all WalkStates */
+struct WalkState {
+
+	/** position where the walk starts */
+	GridPoint startPos;
+
+	/** ctor */
+	WalkState(const GridPoint& startPos) : startPos(startPos) {;}
+
+};
+
+
+/**
+ * base-class for all walk-modules that influence p(e)
+ */
+template <typename Node, typename WalkState> class WalkModule {
+
+public:
+
+	/** update the given WalkState before starting the walk. e.g. based on sensor readings */
+	virtual void updateBefore(WalkState& state) = 0;
+
+	/** get the probability p(e) from curNode to potentialNode */
+	virtual double getProbability(const WalkState& state, const Node& startNode, const Node& curNode, const Node& potentialNode) const = 0;
+
+	/** one step (edge) is taken */
+	virtual void step(WalkState& state, const Node& curNode, const Node& nextNode) = 0;
+
+	/** update the walk state based on the given transition (if any update is necssary) */
+	virtual void updateAfter(WalkState& state, const Node& startNode, const Node& endNode) = 0;
+
+};
+
+#endif // WALKMODULE_H