C# 기본 그래픽

// c# 그래픽 - 경로그리기, 선그리기, picturebox에서 이미지 축 회전

//Graphics graphics = this.CreateGraphics();

//Graphics graphics = pictureBox1.CreateGraphics();

//Pen pen = new Pen(Color.Blue);

//pen.Dispose();

//graphics .Dispose();

private void drawpath() //경로 그리기

{

Point[] point = new Point[3];

point[0].X = 10;

point[0].Y = 10;

point[1].X = 200;

point[1].Y = 10;

point[2].X = 300;

point[2].Y = 300;

Graphics g = pictureBox1.CreateGraphics();

Pen p = new Pen(Color.Blue);

GraphicsPath path = new GraphicsPath();

path.AddLines(point);

g.DrawPath(p, path);

path.Dispose();

p.Dispose();

g.Dispose();

}

private void DrawAxis() //그냥 그려보기.

{

Point p1 = new Point();

Point p2 = new Point();

Pen pen = new Pen(Color.Blue);

Graphics g = pictureBox1.CreateGraphics();

p1.X = 200; p1.Y = 0;

p2.X = 200; p2.Y = 400;

g.DrawLine(pen, p1, p2);       // Graphics의 선을 그리는 함수

p1.X = 0; p1.Y = 200;

p2.X = 400; p2.Y = 200;

g.DrawLine(pen, p1, p2);

p1.X = 0; p1.Y = 202;

p2.X = 0; p2.Y = 198;

for (int i = 0; i <= 40; i++)

{

p1.X += 10;

p2.X += 10;

g.DrawLine(pen, p1, p2);

}

p1.X = 202; p1.Y = 0;

p2.X = 198; p2.Y = 0;

for (int i = 0; i <= 40; i++)

{

p1.Y += 10;

p2.Y += 10;

g.DrawLine(pen, p1, p2);

}

pen.Dispose();

g.Dispose();

}

private void RotateAxis() //pictureBox의 중앙을 탐색, 축을 회전.

{

Graphics g = pictureBox1.CreateGraphics();

Pen p = new Pen(Color.Blue,1);

g.TranslateTransform(200, 200);

g.RotateTransform(-90);

g.DrawLine(p, 0, 0, 200, 0);

g.DrawLine(p, 10, 10, 10, -10);

p.Dispose();

g.Dispose();

}