Zoom in/out, rotar image

private void image_Paint(object sender, PaintEventArgs e)

{

int bDos, dDos, aDos, cDos; ;

double puntoADos, puntoBDos, zDos, mmDos, resultDos;

if (conta == 1)

{

}

if (linea.BackColor == Color.FromA#ff0000 || girar.BackColor == Color.FromA#ff0000 || mover.BackColor == Color.FromA#ff0000 || zoom.BackColor == Color.FromA#ff0000 || zoomOut.BackColor == Color.FromA#ff0000)

{

// Dibuja los segmentos.

for (int i = 0; i < Pt1.Count; i++)

{

// Dibuja el segmento.

//Pen greenPen = new Pen(Color.FromArgb(255, 0, 255, 0), 5);

Pen greenPen = new Pen(Colores.BackColor);

e.Graphics.DrawLine(greenPen, Pt1[i], Pt2[i]);

}

int Talvez = 0;

// Dibuja el final de los puntos.

foreach (Point pt in Pt1)

{

Rectangle rect = new Rectangle(pt.X - object_radius, pt.Y - object_radius, 2 * object_radius + 1, 2 * object_radius + 1);

//Color de fondo del punto de inicio de la linea.

e.Graphics.FillEllipse(Brushes.Red, rect);

//Color de contorno del punto de inicio.

e.Graphics.DrawEllipse(Pens.Red, rect);

aDos = pt.X;

cDos = pt.Y;

Point ptFinal = Pt2[Talvez];

// pt.

Rectangle RectFinal = new Rectangle(ptFinal.X - object_radius, ptFinal.Y - object_radius, 2 * object_radius + 1, 2 * object_radius + 1);

// //Color del punto final de la linea.

e.Graphics.FillEllipse(Brushes.Red, RectFinal);

//Color del contorno del circulo del punto final.

e.Graphics.DrawEllipse(Pens.Red, RectFinal);

bDos = ptFinal.X;

dDos = ptFinal.Y;

puntoADos = Math.Pow(bDos - aDos, 2);

puntoBDos = Math.Pow(dDos - cDos, 2);

zDos = Math.Sqrt(puntoADos + puntoBDos);

mmDos = zDos / 3.779527559;

resultDos = Math.Round(mmDos, 2);

/////////////// MOSTRAMOS LA CAJA DE TEXTO AL FINAL DE LA LINEA /////////////////////////

string drawString = Convert.ToString(resultDos);

Font drawFont = new Font("Arial", 8);

///// Creamos el color del rectangulo al final de la linea ///////////

SolidBrush myBrush = new SolidBrush(Color.FromArgb(100, 245, 171, 0));

e.Graphics.FillRectangle(myBrush, new Rectangle(ptFinal.X + 5, ptFinal.Y + 2, 60, 20));

///////////// Definimos el color del texto del resultado /////////

SolidBrush drawBrush = new SolidBrush(Color.Yellow);

e.Graphics.DrawString(" " + drawString + " mm", drawFont, drawBrush, ptFinal.X + 5, ptFinal.Y + 5);

Talvez++;

}

// Muestra la construccion de la linea.

if (IsDrawing)

{

//Color de linea al momento de trazarla.

Pen greenPen = new Pen(Colores.BackColor);

e.Graphics.DrawLine(greenPen, NewPt1, NewPt2);

e.Graphics.SmoothingMode = SmoothingMode.HighQuality;

e.Graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;

e.Graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;

}

}

}