using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MarketData.CNNProcessing
{
  public class PointMapping
  {
    public PointMapping(double width,double height,double xDataExtent,double xDataExtentMin,double yDataExtent,double yDataExtentMin,double xMarginExtent=0.00,double yMarginExtent=0.00)
    {
      Width=width;
      Height=height;
      XMargin=xMarginExtent;
      YMargin=yMarginExtent;
      XDataExtent=xDataExtent;
      XDataExtentMin=xDataExtentMin;
      YDataExtent=yDataExtent;
      YDataExtentMin=yDataExtentMin;
      XScalingFactor=(Width-(XMargin*2.00))/(XDataExtent-XDataExtentMin);
      YScalingFactor=(Height-(YMargin*2.00))/(YDataExtent-YDataExtentMin);
    }
// MapPoint will both scale the given point and translate the given point from an upper left origin system to a bottom left origin system
    public Point MapPoint(Point sourcePoint)
    {
        int x = (int)((sourcePoint.X - XDataExtentMin) * XScalingFactor + XMargin);
        int y = (int)(Height - 1 - ((sourcePoint.Y - YDataExtentMin) * YScalingFactor) - YMargin);

        // clamp to bounds
        x = Math.Max(0, Math.Min(x, (int)Width - 1));
        y = Math.Max(0, Math.Min(y, (int)Height - 1));

        return new Point(x, y);
    }


// TranslatePoint will only translate the given point from an upper left origin system to a bottom left origin system
    public Point TranslatePoint(Point sourcePoint)
    {
      Point mappedPoint=new Point((int)sourcePoint.X,(int)(Height-sourcePoint.Y-1));
      return mappedPoint;
    }
    public double Width{get;private set;}
    public double Height{get;private set;}
    public double XDataExtent{get;private set;}
    public double XDataExtentMin{get;private set;}
    public double XRange{get{return XDataExtent-XDataExtentMin;}}
    public double YDataExtent{get;private set;}
    public double YDataExtentMin{get;private set;}
    public double YRange{get{return YDataExtent-YDataExtentMin;}}
    public double XMargin{get;private set;}
    public double YMargin{get;private set;}
    public double XScalingFactor{get;private set;}
    public double YScalingFactor{get;private set;}
  }
}