项目初始化

lixiaojun

2023-11-02 cee1c6bf2c5c03c0beadcc9c8f720b03589f83a3

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
namespace Yw.Curve
{
    /// <summary>
    /// 直线
    /// </summary>
    public class TwinRelateCurve1 : IFitPoint
    {
        /// <summary>
        /// 
        /// </summary>
        public TwinRelateCurve1(CurveExpress express)
        {
            _express = express;
        }
 
        /// <summary>
        /// 
        /// </summary>
        public TwinRelateCurve1(List<CurvePoint> points)
        {
            if (points == null || points.Count < 2)
            {
                throw new Exception("出现数值计算问题, 无法解出直线！");
            }
 
            _express = BuildCurveExpress(points);
        }
 
        //曲线表达式
        private CurveExpress _express = null;
 
        /// <summary>
        /// 获取拟合点Y
        /// </summary>
        public double GetFitPointY(double x)
        {
            if (_express == null)
                return default;
            return _express.Index1 * x + _express.Index0;
        }
 
        /// <summary>
        /// 获取拟合点列表
        /// </summary>
        public List<CurvePoint> GetFitPoints(int pointNumber)
        {
            if (_express == null)
                return default;
            return GetFitPointsByXRange(_express.Min, _express.Max, pointNumber);
        }
 
        /// <summary>
        /// 通过X区间获取拟合点列表
        /// </summary>
        public List<CurvePoint> GetFitPointsByXRange(double minX, double maxX, int pointNumber)
        {
            if (_express == null)
                return default;
            if (pointNumber < 2)
                pointNumber = 2;
            if (pointNumber > 100)
                pointNumber = 100;
 
            double space = (maxX - minX) / (pointNumber - 1);
            if (space < 0.0001)
                return default;
            var points = new List<CurvePoint>();
            for (int i = 0; i < pointNumber; i++)
            {
                double x = space * i + minX;
                double y = GetFitPointY(x);
                points.Add(new CurvePoint(x, y));
            }
            return points;
        }
 
        /// <summary>
        /// 创建曲线表达式
        /// </summary>
        public static CurveExpress BuildCurveExpress(List<CurvePoint> points)
        {
            if (points == null || points.Count < 2)
            {
                return default;
            }
            points = points.OrderBy(x => x.X).ToList();
            if (!CurveLineHelper.GetKandB(points.First(), points.Last(), out double k, out double b))
            {
                return default;
            }
            var express = new CurveExpress
            {
                FitType = eFitType.LinearCurve,
                DefinePoints = points.Select(x => new CurvePoint(x)).ToList(),
                Min = points.First().X,
                Max = points.Last().X,
                Index0 = b,
                Index1 = k
            };
 
            return express;
        }
 
 
    }
}