recognition/Matrix.h

//name is too general, should be more specific
//holds values in a matrix form, linear access time
//created to have an easy way to get the sum of all the rows and be able to easily delete rows and columns

#pragma once
#include "mNode.h"
#include "PointList.h"
#include "Point.h"
#include <math.h>
namespace Recognition{
class Matrix
{
private:
        double Sum;
        void delRow(int);
        void delCol(int);
        void sumAll();
        mNode *origin;
        double dist(float x1,float x2,float y1,float y2){
                return hypot( (x1-x2),(y1-y2) );
        }

public:
        Matrix(PointList &);
        ~Matrix(void);
        void delEntry(int x){
                delRow(x);
                delCol(x);
                sumAll();//we use sumAll instead of just subtracting the values we deleted due to round off error.
        }
        mNode *gOrigin(){return origin;}
        double sum(){return Sum;}
        double sum(int);
        double sum(mNode *);
        
        double averageMinCol();
        mNode* getColStart(int index){
                mNode *cur=origin;
                for(int i=0;cur!=NULL;i++){
                        if(i==index)
                                return cur;
                        cur=cur->r;
                }
                return NULL;
        }
        int countRows(){
                mNode *cur=origin;
                int rows=0;
                while(cur!=NULL){
                        cur=cur->b;
                        rows++;
                }
                return rows;
        }
        int countCol(){
                mNode *cur=origin;
                int col=0;
                while(cur!=NULL){
                        cur=cur->r;
                        col++;
                }
                return col;
        }
};}

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