using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Linq;
using System.Text;


namespace TProduct.PumpGraph.Picture
{
    public partial class LxpSeriesChart  
    {

        protected Graphics _graphics;


        public virtual Image CreateImage(int imageWidth, int imageHeight)
        {
            return null;
        }


        #region 尺寸
        protected int _imageWidth;
        protected int _imageHeight;
  
        /// <summary>
        /// 图表
        /// </summary>
        protected RectangleF _chartDiagramSize;
        protected void CalcDiagramSize(int imageWidth, int imageHeight)
        {
            this._imageWidth = imageWidth;
            this._imageHeight = imageHeight;

            float space_top = 30;
            float space_bottom = 100;
            float space_left = 100;
            float space_right = 30;
            _chartDiagramSize = new RectangleF(space_left, space_top, _imageWidth - space_left - space_right, _imageHeight - space_top - space_bottom);
        }
        #endregion




        //X轴实际尺寸换算为像素尺寸
        protected float MapRealToPictQ(double Q)
        {
            double disMaxQ = _coordinateParas.AxisLabelQ[_coordinateParas.AxisLabelQ.Count - 1];
            double disMinQ = _coordinateParas.AxisLabelQ[0];
            return _chartDiagramSize.X + (float)((Math.Log10(Q) - Math.Log10(disMinQ)) * _chartDiagramSize.Width / (Math.Log10(disMaxQ) - Math.Log10(disMinQ))) ;
        }

        //扬程曲线Y坐标实际尺寸换算为像素尺寸
        protected float MapRealToPictH(double H)
        {
            double disMaxH = _coordinateParas.AxisLabelH[_coordinateParas.AxisLabelH.Count - 1];
            double disMinH = _coordinateParas.AxisLabelH[0];

            return _chartDiagramSize.Bottom - (float)((Math.Log10(H) - Math.Log10(disMinH)) * _chartDiagramSize.Height / (Math.Log10(disMaxH) - Math.Log10(disMinH)));
        }

        protected PointF MapRealePointToPictPoint(Eventech.Model.FeatPoint realPoint)
        {
            return new PointF(MapRealToPictQ(realPoint.X), MapRealToPictH(realPoint.Y));
        }






  


    }


    
}