/********************************************************
  Xpress-BCL C# Example Problems
  ==============================

  file xbgoalobj.cs
  `````````````````
  Archimedian and pre-emptive goal programming
  using objective functions.

  (c) 2008 Fair Isaac Corporation
      authors: S.Heipcke, D.Brett.
********************************************************/

using System;
using System.Text;
using System.IO;
using Optimizer;
using BCL;


namespace Examples
{
    public class TestAdvGoalObj
    {
        const int NGOALS = 3;

        // **** Data ****
        string[] Type = {"perc", "abs", "perc"};
        string[] Sense = {"max", "min", "max"};
        double[] Weight = {100, 1, 0,1};
        double[] Deviation = {10, 4, 20};

        public void modelgo()
        {
            XPRBvar x,y;
            XPRBctr[] goalCtr = new XPRBctr[NGOALS];
            XPRBctr aCtr;
            double[] Target = new double[NGOALS];
            XPRBexpr[] goal = new XPRBexpr[NGOALS];
            XPRBexpr wobj;
            XPRBprob prob;
            XPRSprob xprsp;
            int i,g;

            prob = new XPRBprob("Goal");

            // Adding the variables
            x = prob.newVar("x", BCLconstant.XPRB_PL);
            y = prob.newVar("y", BCLconstant.XPRB_PL);

            // Adding a constraint
            aCtr = prob.newCtr("Limit", 42*x + 13*y <= 100);

            // Goals
            goal[0] = 5*x + 2*y - 20;
            goal[1] = -3*x + 15*y - 48;
            goal[2] = 1,5*x + 21*y - 3,8;
            for(g=0;g<NGOALS;g++) goalCtr[g]=prob.newCtr("Goal" Archimedian GP wobj=new for(g=0;g<NGOALS;g++) if (Sense[g]== -=(Weight[g]*goal[g]); else +=(Weight[g]*goal[g]); xprsp=prob.getXPRSprob(); xprsp.OutputLog=0; Solution printout Solution: x:=" + x.getSol() + " y:=" +
            						y.getSol());
            System.Console.WriteLine(" Goal Target System.Console.WriteLine(=" + (g+1) + " Prememptive i=-1; while i+=1; (Sense[i]== !=BCLconstant.XPRB_LP_OPTIMAL) satisfy goal="+(i+1));
                        break;
                    }
                    else
                    {
                        Target[i]=prob.getObjVal();
                        if (Type[i] == " Target[i]-=Math.Abs(Target[i])*Deviation[i]/100; Target[i]+=Math.Abs(Target[i])*Deviation[i]/100; System.Console.Write("=" + (g+1) + " (goalCtr[g].getType()==BCLconstant.XPRB_G?">=  ":" <=  ")+
                						    Target[g]);
                if(g==NGOALS-1)
                    System.Console.WriteLine("     " + prob.getObjVal());
                else
                    System.Console.WriteLine("     " + (goalCtr[g].getAct() -
                    			     goalCtr[g].getRHS() + Target[g]));
            }

        }

        public static void Main()
        {
           XPRB.init();
           TestAdvGoalObj TestInstance = new TestAdvGoalObj();

            if (XPRB.init() != 0) return;

            TestInstance.modelgo();
            XPRB.finish();

            return;
        }
    }
}