118 lines
5.5 KiB
C#
118 lines
5.5 KiB
C#
using SignalsTest;
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using System;
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using SixLabors.Fonts;
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using SixLabors.ImageSharp;
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using SixLabors.ImageSharp.Drawing;
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using SixLabors.ImageSharp.Drawing.Processing;
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using SixLabors.ImageSharp.PixelFormats;
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using SixLabors.ImageSharp.Processing;
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using Newtonsoft.Json;
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public class Picasso{
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public static void DrawChart(List<TAReport> reports, decimal max, decimal min, decimal volMax, string filename="test"){
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// float height = (float)Math.Ceiling(max - min) * 2f;
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// float width = ((float)height / 9f) * 16f;
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decimal heightRange = max-min;
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float height=1080;
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float width = 1920;
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float widthMultiplier = width / (float)reports.Count;
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float heightMultiplier = (height/ (float)heightRange) * 0.6f;
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float candlesOffset = 0.3f * height;
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float volumeSize = 0.2f * height;
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using (Image img = new Image<Rgba32>((int)width + 100, (int)height)){
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//Draw Candles
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for(int i=0; i < reports.Count; i++){
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// img.Mutate(ctx=> ctx.DrawLine()))
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PointF[] points = new PointF[2];
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float openVal1 = (float)(reports[i].candle.Open - min) * heightMultiplier;
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float closeVal1 = (float)(reports[i].candle.Close - min)* heightMultiplier;
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points[0] =new PointF(i * widthMultiplier, openVal1 + candlesOffset);
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points[1] =new PointF(i * widthMultiplier, closeVal1+ candlesOffset);
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PointF[] rangePoints = new PointF[2];
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float highVal = (float)(reports[i].candle.High-min)* heightMultiplier;
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float lowVal = (float)(reports[i].candle.Low-min)* heightMultiplier;
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rangePoints[0] = new PointF(i * widthMultiplier, highVal+ candlesOffset);
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rangePoints[1] = new PointF(i * widthMultiplier, lowVal+ candlesOffset);
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PointF[] volumePoints = new PointF[2];
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volumePoints[0] = new PointF(i * widthMultiplier, 0);
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volumePoints[1] = new PointF(i * widthMultiplier, ((float)reports[i].candle.Volume / (float)volMax) * volumeSize);
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Color candleColor = reports[i].candle.Close > reports[i].candle.Open ? Color.Green : Color.Red;
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img.Mutate(ctx=> ctx.
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DrawLine(candleColor, 10, points).
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DrawLine(candleColor, 3, rangePoints).
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DrawLine(candleColor, 10, volumePoints)
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);
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if(reports[i].TGOR){
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PointF[] tgorPoints = new PointF[2];
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tgorPoints[0] = new PointF(i * widthMultiplier, lowVal+ candlesOffset);
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tgorPoints[1] = new PointF(i * widthMultiplier, lowVal- 15+ candlesOffset);
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img.Mutate(ctx=>ctx.DrawLine(Color.Blue, 15, tgorPoints));
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}
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}
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// Console.WriteLine("Getting paths");
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// object t = GetPropByName(reports[reports.Count- 1], "SMA7");
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// Console.WriteLine(t);
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// Console.WriteLine(float.Parse(t.ToString()));
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//Overlay
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IPath sma7Path = GetPath(reports, "SMA7", widthMultiplier,(float)heightMultiplier, (float)min, candlesOffset);
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IPath sma25Path = GetPath(reports, "SMA25", widthMultiplier,(float)heightMultiplier, (float)min, candlesOffset);
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IPath stPath = GetPath(reports, "ST", widthMultiplier,(float)heightMultiplier, (float)min, candlesOffset);
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//NewChart
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FontFamily fontFamily;
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float TextFontSize = 64f;
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string TextFont = "Noto Sans Mono";
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if (!SystemFonts.TryGet(TextFont, out fontFamily))
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throw new Exception($"Couldn't find font {TextFont}");
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var font = fontFamily.CreateFont(TextFontSize, FontStyle.Regular);
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img.Mutate(ctx => ctx.Draw(Color.Yellow, 2, sma7Path).
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Draw(Color.Purple, 2, sma25Path).
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Draw(Color.Green, 3, stPath).
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Flip(FlipMode.Vertical).
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DrawText(filename, font,new Color(Rgba32.ParseHex("#000000FF")), new PointF(10,10)));
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img.Save($"{filename}.png");
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}
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}
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static IPath GetPath(List<TAReport> reports, string propName, float widthMultiplier,float heightMultiplier, float min, float offset =0){
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PathBuilder builder = new PathBuilder();
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builder.SetOrigin(new PointF(0,0));
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for(int i=0; i < reports.Count; i++){
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float newVal = float.Parse(GetPropByName(reports[i],propName).ToString() ?? "0");
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// Console.WriteLine( newVal);
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float prevVal = i > 0 ? float.Parse(GetPropByName(reports[i-1],propName).ToString() ?? "0") : 0;
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// Console.WriteLine( prevVal);
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float preValY =( prevVal - min) * heightMultiplier ;
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float newValY=(newVal - min) * heightMultiplier;
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PointF prevPoint = new PointF((i-1)* widthMultiplier, (preValY) +offset);
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PointF newPoint = new PointF(i * widthMultiplier, (newValY) + offset);
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// Console.WriteLine(newValY);
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builder.AddLine(prevPoint, newPoint);
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}
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return builder.Build();
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}
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static object GetPropByName(TAReport report, string propName){
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string json = report.toJson();
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Dictionary<string,string> dic = JsonConvert.DeserializeObject<Dictionary<string,string>>(json) ?? new Dictionary<string, string>();
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// Console.WriteLine(dic[propName]);
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return dic[propName];
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}
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} |