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▶ MainForm.cs
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
namespace TestProject
{
/// <summary>
/// 메인 폼
/// </summary>
public partial class MainForm : Form
{
//////////////////////////////////////////////////////////////////////////////////////////////////// Field
////////////////////////////////////////////////////////////////////////////////////////// Private
#region Field
/// <summary>
/// 포인트 1
/// </summary>
private PointF point1;
/// <summary>
/// 포인트 2
/// </summary>
private PointF point2;
/// <summary>
/// 포인트 리스트
/// </summary>
private List<PointF[]> pointList = new List<PointF[]>();
private Brush[] brushArray =
{
new SolidBrush(Color.FromArgb(128, Color.Red )),
new SolidBrush(Color.FromArgb(128, Color.Red )),
new SolidBrush(Color.FromArgb(128, Color.Blue)),
new SolidBrush(Color.FromArgb(128, Color.Blue))
};
/// <summary>
/// 펜 배열
/// </summary>
private Pen[] penArray =
{
Pens.Red,
Pens.Red,
Pens.Blue,
Pens.Blue
};
/// <summary>
/// 그리기 여부
/// </summary>
private bool isDrawing = false;
#endregion
//////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
////////////////////////////////////////////////////////////////////////////////////////// Public
#region 생성자 - MainForm()
/// <summary>
/// 생성자
/// </summary>
public MainForm()
{
InitializeComponent();
this.aspectRatioTextBox.TextChanged += aspectRatioTextBox_TextChanged;
this.pictureBox.Paint += pictureBox_Paint;
this.pictureBox.MouseDown += pictureBox_MouseDown;
this.pictureBox.MouseMove += pictureBox_MouseMove;
this.pictureBox.MouseUp += pictureBox_MouseUp;
}
#endregion
//////////////////////////////////////////////////////////////////////////////////////////////////// Method
////////////////////////////////////////////////////////////////////////////////////////// Private
//////////////////////////////////////////////////////////////////////////////// Event
#region 종횡비 텍스트 박스 텍스트 변경시 처리하기 - aspectRatioTextBox_TextChanged(sender, e)
/// <summary>
/// 종횡비 텍스트 박스 텍스트 변경시 처리하기
/// </summary>
/// <param name="sender">이벤트 발생자</param>
/// <param name="e">이벤트 인자</param>
private void aspectRatioTextBox_TextChanged(object sender, EventArgs e)
{
this.point1 = new PointF();
this.point2 = new PointF();
this.pointList = new List<PointF[]>();
this.pictureBox.Refresh();
}
#endregion
#region 픽처 박스 마우스 DOWN 처리하기 - pictureBox_MouseDown(sender, e)
/// <summary>
/// 픽처 박스 마우스 DOWN 처리하기
/// </summary>
/// <param name="sender">이벤트 발생자</param>
/// <param name="e">이벤트 인자</param>
private void pictureBox_MouseDown(object sender, MouseEventArgs e)
{
this.point1 = e.Location;
this.point2 = e.Location;
this.pointList = new List<PointF[]>();
this.pictureBox.Refresh();
this.isDrawing = true;
}
#endregion
#region 픽처 박스 마우스 이동시 처리하기 - pictureBox_MouseMove(sender, e)
/// <summary>
/// 픽처 박스 마우스 이동시 처리하기
/// </summary>
/// <param name="sender">이벤트 발생자</param>
/// <param name="e">이벤트 인자</param>
private void pictureBox_MouseMove(object sender, MouseEventArgs e)
{
if(!this.isDrawing)
{
return;
}
this.point2 = e.Location;
this.pictureBox.Refresh();
}
#endregion
#region 픽처 박스 마우스 UP 처리하기 - pictureBox_MouseUp(sender, e)
/// <summary>
/// 픽처 박스 마우스 UP 처리하기
/// </summary>
/// <param name="sender">이벤트 발생자</param>
/// <param name="e">이벤트 인자</param>
private void pictureBox_MouseUp(object sender, MouseEventArgs e)
{
if(!this.isDrawing)
{
return;
}
this.isDrawing = false;
float aspectRatio = GetAspectRatio(this.aspectRatioTextBox.Text);
this.pointList = FindRectangle(aspectRatio, this.point1, this.point2);
this.pictureBox.Refresh();
}
#endregion
#region 픽처 박스 페인트시 처리하기 - pictureBox_Paint(sender, e)
/// <summary>
/// 픽처 박스 페인트시 처리하기
/// </summary>
/// <param name="sender">이벤트 발생자</param>
/// <param name="e">이벤트 인자</param>
private void pictureBox_Paint(object sender, PaintEventArgs e)
{
e.Graphics.Clear(this.pictureBox.BackColor);
e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
for(int i = 0; i < this.pointList.Count; i++)
{
e.Graphics.FillPolygon(this.brushArray[i], this.pointList[i]);
e.Graphics.DrawPolygon(this.penArray[i], this.pointList[i]);
}
if(this.point1 != this.point2)
{
e.Graphics.DrawLine(Pens.Black, this.point1, this.point2);
}
}
#endregion
//////////////////////////////////////////////////////////////////////////////// Function
#region 종횡비 구하기 - GetAspectRatio(text)
/// <summary>
/// 종횡비 구하기
/// </summary>
/// <param name="text">텍스트</param>
/// <returns>종횡비</returns>
private float GetAspectRatio(string text)
{
try
{
if(text.Contains(":"))
{
float width = float.Parse(text.Split(':')[0]);
float height = float.Parse(text.Split(':')[1]);
return width / height;
}
else
{
return float.Parse(text);
}
}
catch
{
return 1;
}
}
#endregion
#region 사각형 찾기 - FindRectangle(aspectRatio, point1, point2)
/// <summary>
/// 사각형 찾기
/// </summary>
/// <param name="aspectRatio">종횡비</param>
/// <param name="point1">포인트 1</param>
/// <param name="point2">포인트 2</param>
/// <returns>사각형</returns>
private List<PointF[]> FindRectangle(float aspectRatio, PointF point1, PointF point2)
{
float vectorX = point2.X - point1.X;
float vectorY = point2.Y - point1.Y;
if(Math.Sqrt(vectorX * vectorX + vectorY * vectorY) < 0.1)
{
return null;
}
PointF point3;
PointF point4;
List<PointF[]> pointList = new List<PointF[]>();
float perpendicularVectorX;
float perpendicularVectorY;
perpendicularVectorX = vectorY * aspectRatio;
perpendicularVectorY = -vectorX * aspectRatio;
point3 = new PointF(point2.X + perpendicularVectorX, point2.Y + perpendicularVectorY);
point4 = new PointF(point1.X + perpendicularVectorX, point1.Y + perpendicularVectorY);
pointList.Add(new PointF[] { point1, point2, point3, point4 });
point3 = new PointF(point2.X - perpendicularVectorX, point2.Y - perpendicularVectorY);
point4 = new PointF(point1.X - perpendicularVectorX, point1.Y - perpendicularVectorY);
pointList.Add(new PointF[] { point1, point2, point3, point4 });
perpendicularVectorX = vectorY / aspectRatio;
perpendicularVectorY = -vectorX / aspectRatio;
point3 = new PointF(point2.X + perpendicularVectorX, point2.Y + perpendicularVectorY);
point4 = new PointF(point1.X + perpendicularVectorX, point1.Y + perpendicularVectorY);
pointList.Add(new PointF[] { point1, point2, point3, point4 });
point3 = new PointF(point2.X - perpendicularVectorX, point2.Y - perpendicularVectorY);
point4 = new PointF(point1.X - perpendicularVectorX, point1.Y - perpendicularVectorY);
pointList.Add(new PointF[] { point1, point2, point3, point4 });
return pointList;
}
#endregion
}
}728x90
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