kazu
4f511d907e
needed interface changes [new options] logger for android wifi-ap-optimization new test-cases
89 lines
2.0 KiB
C++
89 lines
2.0 KiB
C++
#ifndef WALKMODULESPREAD_H
|
|
#define WALKMODULESPREAD_H
|
|
|
|
#include "WalkModule.h"
|
|
#include "WalkStateHeading.h"
|
|
|
|
#include "../../../../Assertions.h"
|
|
|
|
/** state-parameter needed for WalkModuleSpread */
|
|
struct WalkStateSpread {
|
|
|
|
/** nested struct to prevent name-clashes */
|
|
struct {
|
|
|
|
/** keep something like a moving-average-position we want to strictly depart from */
|
|
GridPoint departFrom;
|
|
|
|
} spread;
|
|
|
|
};
|
|
|
|
|
|
/**
|
|
* simply try to move away from the starting node as much as possible
|
|
*/
|
|
template <typename Node, typename WalkState> class WalkModuleSpread : public WalkModule<Node, WalkState> {
|
|
|
|
private:
|
|
|
|
/**
|
|
* how fast to adjust the average-position to depart from
|
|
* values between 3% and 10% seem fine
|
|
*/
|
|
const float kappa = 0.10;
|
|
|
|
public:
|
|
|
|
|
|
/** ctor */
|
|
WalkModuleSpread() {
|
|
|
|
/** ensure the templated WalkState inherits from WalkStateSpread */
|
|
StaticAssert::AinheritsB<WalkState, WalkStateSpread>();
|
|
|
|
}
|
|
|
|
|
|
virtual void updateBefore(WalkState& state, const Node& startNode) override {
|
|
(void) state;
|
|
(void) startNode;
|
|
}
|
|
|
|
virtual void updateAfter(WalkState& state, const Node& startNode, const Node& endNode) override {
|
|
(void) state;
|
|
(void) startNode;
|
|
(void) endNode;
|
|
}
|
|
|
|
virtual void step(WalkState& state, const Node& curNode, const Node& nextNode) override {
|
|
|
|
(void) curNode;
|
|
state.spread.departFrom = state.spread.departFrom * (1.0f-kappa) + nextNode * (kappa);
|
|
|
|
}
|
|
|
|
double getProbability(const WalkState& state, const Node& startNode, const Node& curNode, const Node& potentialNode) const override {
|
|
|
|
(void) startNode;
|
|
|
|
// current distance from the depart-from position
|
|
const float dOld = state.spread.departFrom.getDistanceInCM(curNode);
|
|
|
|
// potential distance from the depart-from position
|
|
const float dNew = state.spread.departFrom.getDistanceInCM(potentialNode);
|
|
|
|
// now, favor edges that depart even further from the depart-from position!
|
|
|
|
if (dNew > dOld) {return 0.90;} // departing
|
|
if (dNew == dOld) {return 0.09;} // distance does not change
|
|
{return 0.01;} // NOT departing.. unlikely
|
|
|
|
}
|
|
|
|
|
|
};
|
|
|
|
|
|
#endif // WALKMODULESPREAD_H
|