disturbance.h

#ifndef DISTURBANCE_H
#include "robot.h"
#include "threshold.h"
#include <algorithm>
#include <stdexcept>
#include <opencv2/imgproc.hpp> //useful down the line! (graphTools)
#include <opencv2/tracking.hpp>
#include <opencv2/video/tracking.hpp> //kalman filter
 
 
typedef unsigned int AffordanceIndex; //was thinking of this being a character but doesn't have to be maybe enum is fine
 
 
 
struct CompareY{
    template <typename T>
    bool operator() ( T a, T b ){ //
        return a.y <=b.y;
    }
}; 
 
struct CompareX{
    template <typename T>
    bool operator()(T a, T b){
        return a.x<=b.x;
    }
};
 
template <typename C>
std::vector <C> arrayToVec(C* c, int ct){
    std::vector <C> result;
    for (int i=0; i<ct; i++){
        result.push_back(*c);
        c++;
    }
    return result;
}
 
 
class ControlInterface;
class Bundle;
class BodyFeatures{
    public:
    b2Transform pose {b2Transform(b2Vec2(0,0), b2Rot(0))} ;
    float halfLength=MIN_BODY_DIMENSION;//x
    float halfWidth=MIN_BODY_DIMENSION; //y
    float shift=0.0f;
    b2BodyType bodyType = b2_dynamicBody;
 
    b2Shape::Type shape = b2Shape::e_polygon;
    bool attention=false;
 
    BodyFeatures(){}
 
    BodyFeatures(b2Transform _pose):pose(_pose){}
 
    void setHalfLength(const float & f){
        if (f<MIN_BODY_DIMENSION){
            halfLength=MIN_BODY_DIMENSION;
        }
        else{
            halfLength=f;
        }
    }
 
    void setHalfWidth(const float & f){
        if (f<MIN_BODY_DIMENSION){
            halfWidth=MIN_BODY_DIMENSION;
        }
        else{
            halfWidth=f;
        }
    }
 
    bool match(const BodyFeatures&, Bundle * bundle=NULL, b2Transform t=b2Transform_zero);
 
    float width()const{
        return halfWidth*2;
    }
 
    float length()const{
        return halfLength*2;
    }
 
    float area()const{
        return width()*length();
    }
 
    std::vector <b2Vec2> vertices()const;
 
    std::vector <cv::Point2f> vertices_cv()const; //global vertices
 
    bool is_point()const{
        return halfWidth==MIN_BODY_DIMENSION && halfLength==MIN_BODY_DIMENSION;
    }
 
    Bundle get_bundle(){
        return Bundle(pose.p.x, pose.p.y, pose.q.GetAngle(), halfWidth, halfLength);
    }
};
 
 
struct Disturbance{ 
 
private:
friend class ControlInterface;
friend struct StateMatcher;
    AffordanceIndex affordanceIndex = NONE; //not using the enum because in the future we might want to add more affordances
    bool valid= 0;
    bool rotation_valid=0;    
 
    void setOrientation(float f){ //returns orientation (angle) of a point, in order 
        rotation_valid=1;
        bf.pose.q.Set(f);
    }
 
    void addToOrientation(float dtheta){
    if (rotation_valid){
        setOrientation(bf.pose.q.GetAngle()+dtheta);
    }
    else{
        setOrientation(dtheta);
    }
}
 
public:
    BodyFeatures bf=BodyFeatures(b2Transform(b2Vec2(10000, 10000), b2Rot(M_PI)));
 
    Disturbance(){};
    Disturbance(AffordanceIndex i){
        affordanceIndex = i;
    }
    
    Disturbance(AffordanceIndex i, b2Vec2 p){
        affordanceIndex = i;
        bf.pose.Set(p, 0);
        valid =1;
    }    
 
        Disturbance(AffordanceIndex i, b2Vec2 p, float a){
        affordanceIndex = i;
        bf.pose.Set(p,a);
        valid =1;
    }   
 
    Disturbance(BodyFeatures _bf): bf(_bf){
        affordanceIndex=AVOID;
    } 
 
    Disturbance(b2Body* b){
        bf.pose=b->GetTransform(); //global
        b2Fixture * fixture =b->GetFixtureList();
        bf.shape=(fixture->GetShape()->GetType());
        valid=1;
        if (bf.shape==b2Shape::e_polygon){
            b2PolygonShape * poly=(b2PolygonShape*)fixture->GetShape();
            std::vector <b2Vec2> local_vertices=arrayToVec(poly->m_vertices, poly->m_count);
            CompareX compareX;
            CompareY compareY;
            float minx=(std::min_element(local_vertices.begin(), local_vertices.end(), compareX)).base()->x;
            float miny=(std::min_element(local_vertices.begin(), local_vertices.end(), compareY)).base()->y;
            float maxx=(std::max_element(local_vertices.begin(), local_vertices.end(), compareX)).base()->x;
            float maxy=(std::max_element(local_vertices.begin(), local_vertices.end(), compareY)).base()->y;
            bf.halfLength=(fabs(maxy-miny))/2; //local coordinates
            bf.halfWidth=(fabs(maxx-minx))/2;
        }
        bf.attention=true;
        affordanceIndex=1;
    }
 
    float getAngle(b2Transform);
 
    float getAngle(b2Body* b){
        return getAngle(b->GetTransform());
    }
 
    void setPosition(b2Vec2 pos){
        bf.pose.p.Set(pos.x, pos.y);
    }
    
    void setPosition(float x, float y){
        bf.pose.p.Set(x, y);
    }
    
    b2Vec2 getPosition()const{
        return bf.pose.p;
    }
 
 
    bool isValid()const{
        return valid;
    }
 
    AffordanceIndex getAffIndex()const{
        return affordanceIndex;
    }
 
    void set_affordance(AffordanceIndex a){
        affordanceIndex=a;
    }
 
    void invalidate(){
        valid =0;
    }
 
    void validate(){
        valid=1;
    }
 
 
    std::pair<bool, float> getOrientation(){
    
        return std::pair<bool, float>(rotation_valid, bf.pose.q.GetAngle());
    }
 
    b2Transform pose()const{
        return bf.pose;
    }
 
    void setPose(b2Transform t){
        bf.pose=t;
    }
 
    void setAsBox(float w, float l){
        bf.halfLength=l;
        bf.halfWidth=w;
    }
 
    BodyFeatures bodyFeatures()const{
        return bf;
    }
 
 
    void subtractPose(b2Transform dPose){
        bf.pose.p.x-=dPose.p.x;
        bf.pose.p.y-=dPose.p.y;
        addToOrientation(-dPose.q.GetAngle());
    }
 
    float halfLength(){
        return bf.halfLength;
    }
 
    float halfWidth(){
        return bf.halfWidth;
    }
 
    void setOrientation(float, float);
 
    std::vector <b2Vec2> vertices()const; //global vertices
 
    bool operator==(const Disturbance & d);
 
    bool operator==(const Disturbance & d)const;
 
}; 
 
 
struct simResult{
    enum resultType {successful =0, crashed =1, safeForNow=2}; //successful =0, crashed =1, safeForNow=2
    resultType resultCode= resultType::successful;
    Disturbance collision;
    //bool valid = 0;
    b2Transform endPose = b2Transform(b2Vec2(0.0, 0.0), b2Rot(0));
    int step=0;
 
 
    simResult(){}
 
    simResult(resultType code): resultCode(code){
     //   valid =1;
    }
 
    simResult(resultType code, Disturbance obst): resultCode(code), collision(obst){
       // valid =1;
    }
};
 
std::vector <b2Vec2> GetLocalPoints( std::vector <b2Vec2>, const b2Body *);
 
#endif