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

namespace Uninpho.Railway.Waveform
{
    /// <summary>
    /// 绘图类
    /// </summary>
    class DrawFunClass
    {
        /// <summary>
        /// 坐标转换
        /// </summary>
        /// <param name="g">Graphics g</param>
        /// <param name="dx">距离左上角屏幕坐标系的x的相对位置(偏移量)</param>
        /// <param name="dy">距离左上角屏幕坐标系的y的相对位置(偏移量)</param>
        public static void Trans(Graphics g, float dx, float dy)
        {
            Matrix mymatrix = new Matrix(1, 0, 0, -1, 0, 0);
            g.Transform = mymatrix;
            g.TranslateTransform(dx, dy, MatrixOrder.Append);
        }

        /// <summary>
        /// 绘制一条波形图曲线
        /// </summary>
        /// <param name="graphics">Graphics g</param>
        /// <param name="points">点集</param>
        public static void DrawCuvreFun(Graphics graphics, PointF[] points, Color color, int width)
        {
            if (points.Length >= 2)
            {
                graphics.SmoothingMode = SmoothingMode.HighQuality;
                graphics.CompositingQuality = CompositingQuality.HighSpeed;
                graphics.DrawCurve(new Pen(color, width), points);
            }

        }

        /// <summary>
        /// 绘制折线
        /// </summary>
        /// <param name="graphics">Graphics g</param>
        /// <param name="points">点集</param>
        public static void DrawLinesFun(Graphics graphics, PointF[] points, Color color, int width)
        {
            if (points.Length >= 2)
            {
                graphics.SmoothingMode = SmoothingMode.HighSpeed;
                graphics.CompositingQuality = CompositingQuality.HighSpeed;
                graphics.DrawLines(new Pen(color, width), points);
            }

        }

        public static void DrawScaleLine(Graphics graphics, PointF points1, PointF points2, Color color, int width)
        {
            graphics.SmoothingMode = SmoothingMode.HighSpeed;
            graphics.CompositingQuality = CompositingQuality.HighSpeed;
            graphics.DrawLine(new Pen(color, width), points1, points2);
        }
        public static void DrawScaleString(Graphics graphics, PointF points, Color color, int size, string s , int Xpianyi)
        {
            graphics.SmoothingMode = SmoothingMode.HighSpeed;
            graphics.CompositingQuality = CompositingQuality.HighSpeed;
            StringFormat fomt = new StringFormat();
            fomt.LineAlignment = StringAlignment.Center;
            fomt.Alignment = StringAlignment.Center;
            Matrix oldtrans = graphics.Transform;

            Font goodFont = new Font("MS UI Gothic", size);
            graphics.ResetTransform();
            graphics.DrawString(s, goodFont, new SolidBrush(color), points.X + Xpianyi, points.Y - 20, fomt);
            graphics.Transform = oldtrans;
        }
    }
}