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WIP! added a cubic bezier curve generator

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This commit is contained in:
Rohmer Maxime
2022-06-01 11:53:27 +02:00
parent f25d3c1bcf
commit 6614cab8a7
5 changed files with 225 additions and 10 deletions
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218
Paint_2/BezierPencil.cs Normal file
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@@ -0,0 +1,218 @@
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
//[DEBUG]
using System.Windows.Forms;
namespace Paint_2
{
internal class BezierPencil : PaintTool
{
private List<List<Point>> _drawings;
private List<List<Point>> _drawingsRedo;
private List<Color> _colors;
private List<Color> _colorsRedo;
private List<int> _widths;
private List<int> _widthsRedo;
private Color _color;
private string _name;
private int _width;
public List<List<Point>> Drawings { get => _drawings; set => _drawings = value; }
public List<List<Point>> DrawingsRedo { get => _drawingsRedo; set => _drawingsRedo = value; }
public List<Color> Colors { get => _colors; set => _colors = value; }
public List<Color> ColorsRedo { get => _colorsRedo; set => _colorsRedo = value; }
public List<int> Widths { get => _widths; set => _widths = value; }
public List<int> WidthsRedo { get => _widthsRedo; set => _widthsRedo = value; }
public Color Color { get => _color; set => _color = value; }
public string Name { get => _name; set => _name = value; }
public int Width { get => _width; set => _width = value; }
public BezierPencil(string name)
{
Drawings = new List<List<Point>>();
DrawingsRedo = new List<List<Point>>();
Colors = new List<Color>();
ColorsRedo = new List<Color>();
Widths = new List<int>();
WidthsRedo = new List<int>();
Name = name;
}
public void Add(Point point)
{
if (Drawings[Drawings.Count - 1].Count == 0)
{
Drawings[Drawings.Count - 1].Add(point);
}
}
public void Clear()
{
Drawings = new List<List<Point>>();
DrawingsRedo = new List<List<Point>>();
Colors = new List<Color>();
ColorsRedo = new List<Color>();
Widths = new List<int>();
WidthsRedo = new List<int>();
}
public List<Color> GetLastColors(int colorNumber)
{
List<Color> result = new List<Color>();
if (Colors.Count <= colorNumber)
{
//We need to fill with black color
for (int i = Colors.Count; i > 0; i--)
{
result.Add(Colors[(Colors.Count) - i]);
}
for (int i = colorNumber - Colors.Count; i > 0; i--)
{
result.Add(Color.FromArgb(0x00, 0x00, 0x00));
}
}
else
{
for (int i = colorNumber; i > 0; i--)
{
result.Add(Colors[(Colors.Count) - i]);
}
}
return result;
}
private Point LerpY(Point start,Point end,int x)
{
int newY = start.Y + (x - start.X) * ((end.Y - start.Y) / (end.X - start.X));
return new Point(x,newY);
}
private Point LerpX(Point start,Point end,int y)
{
int newX = start.X + (y - start.Y) * ((end.Y - start.Y) / (end.X - start.X));
return new Point(newX,y);
}
public void Paint(Bitmap canvas)
{
Graphics gr = Graphics.FromImage(canvas);
int drawingCounter = 0;
Size pointSize;
List<Point> points = new List<Point>();
foreach (List<Point> drawing in Drawings)
{
if (drawing.Count > 0)
{
points.Add(drawing[0]);
}
}
if (points.Count > 0)
{
for (int i = 1; i <= points.Count; i++)
{
pointSize = new Size(Widths[i - 1], Widths[i - 1]);
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));
if (i % 4 == 0)
{
//Drawing the first level of curve
Point p1 = points[i - 4];
Point p2 = points[i - 3];
Point p3 = points[i - 2];
Point p4 = points[i - 1];
/*
// Calculate the lowest x change
int range = Math.Min(Math.Abs(p4.X - p3.X), Math.Min(Math.Abs(p2.X -p1.X), Math.Abs(p3.X - p2.X)));
float firstOffset = Math.Abs(p2.X - p1.X) / range;
float SecondOffset = Math.Abs(p3.X - p2.X) / range;
float thirdOffset = Math.Abs(p4.X - p3.X) / range;
*/
//[DEBUG] MessageBox.Show("X Diff \n1: " + Math.Abs(p2.X - p1.X) + " \n2: " + Math.Abs(p3.X - p2.X) + " \n3: " + Math.Abs(p4.X - p3.X) + " \nLowest: " + range);
gr.DrawLine(new Pen(Colors[i - 4], Widths[i - 4]), p1, p2);
gr.DrawLine(new Pen(Colors[i - 3], Widths[i - 3]), p2, p3);
gr.DrawLine(new Pen(Colors[i - 2], Widths[i - 2]), p3, p4);
//Drawing the second level of curve
Point p1_2 = new Point((p1.X + p2.X) / 2, (p1.Y + p2.Y) / 2);
Point p2_2 = new Point((p2.X + p3.X) / 2, (p2.Y + p3.Y) / 2);
Point p3_2 = new Point((p3.X + p4.X) / 2, (p3.Y + p4.Y) / 2);
gr.DrawLine(new Pen(Colors[i - 1], Widths[i - 1]), p1_2, p2_2);
gr.DrawLine(new Pen(Colors[i - 1], Widths[i - 1]), p2_2, p3_2);
//Drawing the thirs level of curve
Point p1_3 = new Point((p1_2.X + p2_2.X) / 2, (p1_2.Y + p2_2.Y) / 2);
Point p2_3 = new Point((p2_2.X + p3_2.X) / 2, (p2_2.Y + p3_2.Y) / 2);
gr.DrawLine(new Pen(Color.Pink, 5), p1_3, p2_3);
//Drawing the Bezier point
Point p1_4 = new Point((p1_3.X + p2_3.X) / 2, (p1_3.Y + p2_3.Y) / 2);
gr.FillEllipse(new SolidBrush(Color.AliceBlue), new Rectangle(new Point(p1_4.X - pointSize.Width / 2, p1_4.Y - pointSize.Height / 2), pointSize));
}
}
}
}
public void Start(Color color, int width)
{
Color = color;
Width = width;
List<Point> points = new List<Point>();
Drawings.Add(points);
Colors.Add(Color);
Widths.Add(Width);
}
public void Stop()
{
//Implement the bezier curve algorythm (if there are enough points)
}
public override string ToString()
{
return Name;
}
public void Undo()
{
int last = Drawings.Count - 1;
if (Drawings.Count > 1)
{
DrawingsRedo.Add(Drawings[last]);
Drawings.RemoveAt(Drawings.Count - 1);
ColorsRedo.Add(Colors[last]);
Colors.RemoveAt(Colors.Count - 1);
WidthsRedo.Add(Widths[last]);
Widths.RemoveAt(Widths.Count - 1);
}
else
{
DrawingsRedo.Add(Drawings[0]);
Drawings.Clear();
ColorsRedo.Add(Colors[0]);
Colors.Clear();
WidthsRedo.Add(Widths[0]);
Widths.Clear();
}
}
public void Redo()
{
if (DrawingsRedo.Count > 0 && WidthsRedo.Count > 0 && ColorsRedo.Count > 0)
{
Drawings.Add(DrawingsRedo[DrawingsRedo.Count - 1]);
DrawingsRedo.RemoveAt(DrawingsRedo.Count - 1);
Colors.Add(ColorsRedo[ColorsRedo.Count - 1]);
ColorsRedo.RemoveAt(ColorsRedo.Count - 1);
Widths.Add(WidthsRedo[WidthsRedo.Count - 1]);
WidthsRedo.RemoveAt(WidthsRedo.Count - 1);
}
}
}
}

4
Paint_2/DotPencil.cs
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@@ -60,13 +60,9 @@ namespace Paint_2
{
int pointCounter = 0;
foreach (Point p in drawing)
{
if (pointCounter > 0)
{
pointSize = new Size(Widths[drawingCounter], Widths[drawingCounter]);
gr.FillEllipse(new SolidBrush(Colors[drawingCounter]), new Rectangle(new Point(p.X - pointSize.Width / 2, p.Y - pointSize.Height / 2), pointSize));
}
pointCounter += 1;
}
drawingCounter += 1;

1
Paint_2/Form1.cs
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@@ -34,6 +34,7 @@ namespace Paint_2
toolList = new List<PaintTool>();
toolList.Add(new Pencil("Default Pencil"));
toolList.Add(new DotPencil("Dotted Line"));
toolList.Add(new BezierPencil("Bezier Generator"));
sketch = new Sketch(new Size(canvas.Width, canvas.Height), toolList);
tmrRefresh.Enabled = true;

1
Paint_2/Paint_2.csproj
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@@ -46,6 +46,7 @@
<Reference Include="System.Xml" />
</ItemGroup>
<ItemGroup>
<Compile Include="BezierPencil.cs" />
<Compile Include="DotPencil.cs" />
<Compile Include="Form1.cs">
<SubType>Form</SubType>

5
Paint_2/Pencil.cs
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@@ -60,14 +60,13 @@ namespace Paint_2
{
int pointCounter = 0;
foreach (Point p in drawing)
{
if (pointCounter > 0)
{
pointSize = new Size(Widths[drawingCounter], Widths[drawingCounter]);
gr.FillEllipse(new SolidBrush(Colors[drawingCounter]), new Rectangle(new Point(p.X - pointSize.Width / 2, p.Y - pointSize.Height / 2), pointSize));
if (pointCounter > 0)
{
gr.DrawLine(new Pen(Colors[drawingCounter], Widths[drawingCounter]), drawing[pointCounter -1], p);
}
pointCounter += 1;
}
drawingCounter += 1;