269 lines
10 KiB
C#
269 lines
10 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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//[DEBUG]
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using System.Windows.Forms;
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namespace Paint_2
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{
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internal class BezierPencil : PaintTool
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{
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private List<List<Point>> _drawings;
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private List<List<Point>> _drawingsRedo;
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private List<Color> _colors;
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private List<Color> _colorsRedo;
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private List<int> _widths;
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private List<int> _widthsRedo;
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private Color _color;
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private string _name;
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private int _width;
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public List<List<Point>> Drawings { get => _drawings; set => _drawings = value; }
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public List<List<Point>> DrawingsRedo { get => _drawingsRedo; set => _drawingsRedo = value; }
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public List<Color> Colors { get => _colors; set => _colors = value; }
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public List<Color> ColorsRedo { get => _colorsRedo; set => _colorsRedo = value; }
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public List<int> Widths { get => _widths; set => _widths = value; }
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public List<int> WidthsRedo { get => _widthsRedo; set => _widthsRedo = value; }
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public Color Color { get => _color; set => _color = value; }
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public string Name { get => _name; set => _name = value; }
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public int Width { get => _width; set => _width = value; }
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public BezierPencil(string name)
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{
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Drawings = new List<List<Point>>();
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DrawingsRedo = new List<List<Point>>();
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Colors = new List<Color>();
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ColorsRedo = new List<Color>();
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Widths = new List<int>();
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WidthsRedo = new List<int>();
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Name = name;
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//I KNOW I KNOW I LITTERALLY REINVENTED UNIT TEST BUT IF I CREATE SOME I WILL NEED TO DO THEM ALL STOP HARASSING ME
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//MessageBox.Show("Lerp Test\nstart = 100;100\nend = 200;200\nt = 0.2\nExpected : 120;120 Actual : "+Lerp(new Point(100,100),new Point(200,200),0.2f));
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//MessageBox.Show("Lerp Test\nstart = 200;200\nend = 100;100\nt = 0.2\nExpected : 180;180 Actual : " + Lerp(new Point(200, 200), new Point(100, 100), 0.2f));
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}
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public void Add(Point point)
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{
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if (Drawings[Drawings.Count - 1].Count == 0)
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{
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Drawings[Drawings.Count - 1].Add(point);
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}
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}
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public void Clear()
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{
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Drawings = new List<List<Point>>();
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DrawingsRedo = new List<List<Point>>();
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Colors = new List<Color>();
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ColorsRedo = new List<Color>();
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Widths = new List<int>();
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WidthsRedo = new List<int>();
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}
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public List<Color> GetLastColors(int colorNumber)
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{
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List<Color> result = new List<Color>();
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if (Colors.Count <= colorNumber)
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{
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//We need to fill with black color
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for (int i = Colors.Count; i > 0; i--)
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{
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result.Add(Colors[(Colors.Count) - i]);
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}
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for (int i = colorNumber - Colors.Count; i > 0; i--)
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{
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result.Add(Color.FromArgb(0x00, 0x00, 0x00));
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}
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}
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else
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{
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for (int i = colorNumber; i > 0; i--)
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{
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result.Add(Colors[(Colors.Count) - i]);
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}
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}
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return result;
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}
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private Point Lerp(Point start, Point end, float t)
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{
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//float xRatio = Math.Min((float)start.X,end.X) / Math.Max((float)start.X,end.X);
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//float yRatio = Math.Min((float)start.Y, end.Y) / Math.Max((float)start.Y, end.Y);
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int xDiff = end.X - start.X;
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int yDiff = end.Y - start.Y;
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int resultX = start.X + (int)(t * xDiff);
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int resultY = start.Y + (int)(t * yDiff);
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Point result = new Point(resultX, resultY);
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return result;
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}
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public void Paint(Bitmap canvas)
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{
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Graphics gr = Graphics.FromImage(canvas);
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int drawingCounter = 0;
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Size pointSize;
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List<Point> points = new List<Point>();
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foreach (List<Point> drawing in Drawings)
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{
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if (drawing.Count > 0)
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{
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points.Add(drawing[0]);
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}
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}
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if (points.Count > 0)
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{
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for (int i = 1; i <= points.Count; i++)
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{
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pointSize = new Size(Widths[0], Widths[0]);
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gr.FillEllipse(new SolidBrush(Colors[i - 1]), new Rectangle(new Point(points[i - 1].X - pointSize.Width / 2, points[i - 1].Y - pointSize.Height / 2), pointSize));
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/*
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if (i >= 4)
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{
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Point p1 = points[i - 4];
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Point p2 = points[i - 3];
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Point p3 = points[i - 2];
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Point p4 = points[i - 1];
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BezierGenerator(gr, p1, p2, p3, p4, i);
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}
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*/
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ContinuousBezierGenerator(gr, points, i);
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}
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}
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}
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private void ContinuousBezierGenerator(Graphics gr, List<Point> points, int i)
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{
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if (points.Count >= 4 && points.Count % 2 == 0)
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{
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float precision = 0.01f;
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for (float t = 0; t <= 1; t += precision)
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{
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List<Point> DumpList = new List<Point>();
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List<Point> WorkingList = new List<Point>(points);
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while (WorkingList.Count != 1)
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{
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if (WorkingList.Count > 2)
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{
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for (int pos = 0; pos < WorkingList.Count - 1; pos++)
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{
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//gr.DrawLine(new Pen(Color.Red), WorkingList[pos], WorkingList[pos + 1]);
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//DumpList.Add(Lerp(WorkingList[pos], WorkingList[pos + 1], 0.5f));
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DumpList.Add(Lerp(WorkingList[pos], WorkingList[pos + 1], t));
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}
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}
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else
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{
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DumpList.Add(Lerp(WorkingList[0], WorkingList[1], precision));
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}
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WorkingList = new List<Point>(DumpList);
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DumpList = new List<Point>();
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}
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gr.FillEllipse(new SolidBrush(GetRandomColor()), new Rectangle(WorkingList[0].X - Widths[0] / 2, WorkingList[0].Y - Widths[0] / 2, Widths[0], Widths[0]));
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}
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}
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}
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private void BezierGenerator(Graphics gr, Point p1, Point p2, Point p3, Point p4, int i)
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{
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gr.DrawLine(new Pen(Colors[i - 4], Widths[i - 4]), p1, p2);
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gr.DrawLine(new Pen(Colors[i - 3], Widths[i - 3]), p2, p3);
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gr.DrawLine(new Pen(Colors[i - 2], Widths[i - 2]), p3, p4);
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//float t = 0.5f;
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float precision = 0.01f;
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for (float t = 0; t <= 1; t += precision)
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{
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//Quadratic Bezier Curve creator
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//Drawing the first step of the curve
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Point p1_2 = Lerp(p1, p2, t);
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Point p2_2 = Lerp(p2, p3, t);
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Point p3_2 = Lerp(p3, p4, t);
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//gr.DrawLine(new Pen(GetRandomColor(), Widths[0]), p1_2, p2_2);
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//gr.DrawLine(new Pen(GetRandomColor(), Widths[0]), p2_2, p3_2);
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//Drawing the second step of the curve
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Point p1_3 = Lerp(p1_2, p2_2, t);
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Point p2_3 = Lerp(p2_2, p3_2, t);
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//gr.DrawLine(new Pen(GetRandomColor(), Widths[0]), p1_3, p2_3);
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//Drawing the Bezier Point
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Point p1_4 = Lerp(p1_3, p2_3, t);
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gr.FillEllipse(new SolidBrush(GetRandomColor()), new Rectangle(p1_4.X - Widths[0] / 2, p1_4.Y - Widths[0] / 2, Widths[0], Widths[0]));
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}
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}
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private Color GetRandomColor()
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{
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Random rnd = new Random();
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return Color.FromArgb(rnd.Next(0, 256), rnd.Next(0, 256), rnd.Next(0, 256));
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}
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public void Start(Color color, int width)
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{
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Color = color;
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Width = width;
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List<Point> points = new List<Point>();
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Drawings.Add(points);
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Colors.Add(Color);
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Widths.Add(Width);
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}
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public void Stop()
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{
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//Implement the bezier curve algorythm (if there are enough points)
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}
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public override string ToString()
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{
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return Name;
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}
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public void Undo()
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{
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int last = Drawings.Count - 1;
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if (Drawings.Count > 1)
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{
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DrawingsRedo.Add(Drawings[last]);
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Drawings.RemoveAt(Drawings.Count - 1);
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ColorsRedo.Add(Colors[last]);
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Colors.RemoveAt(Colors.Count - 1);
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WidthsRedo.Add(Widths[last]);
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Widths.RemoveAt(Widths.Count - 1);
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}
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else
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{
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DrawingsRedo.Add(Drawings[0]);
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Drawings.Clear();
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ColorsRedo.Add(Colors[0]);
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Colors.Clear();
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WidthsRedo.Add(Widths[0]);
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Widths.Clear();
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}
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}
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public void Redo()
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{
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if (DrawingsRedo.Count > 0 && WidthsRedo.Count > 0 && ColorsRedo.Count > 0)
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{
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Drawings.Add(DrawingsRedo[DrawingsRedo.Count - 1]);
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DrawingsRedo.RemoveAt(DrawingsRedo.Count - 1);
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Colors.Add(ColorsRedo[ColorsRedo.Count - 1]);
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ColorsRedo.RemoveAt(ColorsRedo.Count - 1);
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Widths.Add(WidthsRedo[WidthsRedo.Count - 1]);
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WidthsRedo.RemoveAt(WidthsRedo.Count - 1);
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}
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}
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public Bitmap Stop(Bitmap bmp)
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{
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return bmp;
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}
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}
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}
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