Zoom in/out, rotar image

Question

Actually work in a application about zoom in/out, but the problem is that in the moment of make zoom in or zoom out can´t resize the line, Can someone give me an idea of how to fix it ? this is a link about example of application : https://1drv.ms/f/s!ArkkNJAikHkShFAoiXCExZw3ILAf

Alejandro Acosta · Answer

In this link is the proyect where is work https://1drv.ms/f/s!ArkkNJAikHkShFAoiXCExZw3ILAf

Alejandro Acosta · Answer

Hi Bikesh, ok this is my code for drawing line, resize, move the line and also move the picture box : 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 { // 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; } } } private void image_MouseMove(object sender, MouseEventArgs e) { if (linea.BackColor == Color.FromA#ff0000 || zoom.BackColor == Color.FromA#ff0000) { Cursor new_cursor = Cursors.Cross; // Verificamos que tipo de cursor se encuentra por encima del picturebox Point hit_point; int segment_number; if (MouseIsOverEndpoint(e.Location, out segment_number, out hit_point)) { new_cursor = Cursors.Hand; } else if (MouseIsOverSegment(e.Location, out segment_number)) { new_cursor = Cursors.Hand; } //Cambia de cursor. if (image.Cursor != new_cursor) image.Cursor = new_cursor; image.Refresh(); } ////allow move the picturebox if (mover.BackColor == Color.FromA#ff0000) { if (e.Button == MouseButtons.Left) { image.Location = new Point(image.Left + e.X - izquierdo, image.Top + e.Y - alto); } } } ////////////////////////// INSERTA LAS COORDENADAS DEL SEGUNTO PUNTO DE CADA LINEA private void picCanvas_MouseMove_Drawing(object sender, MouseEventArgs e) { NewPt2 = new Point(e.X, e.Y); image.Refresh(); } private void picCanvas_MouseUp_Drawing(object sender, MouseEventArgs e) { IsDrawing = false; // Reestablece el tamaño de la linea. image.MouseMove -= picCanvas_MouseMove_Drawing; image.MouseMove += image_MouseMove; image.MouseUp -= picCanvas_MouseUp_Drawing; // Creacion de nuevo segmento. Pt1.Add(NewPt1); Pt2.Add(NewPt2); //// ARRAY///// image.Refresh(); } ///////////////// Permite soltar la linea al momento de moverla. private void picCanvas_MouseUp_MovingSegment(object sender, MouseEventArgs e) { image.MouseMove += image_MouseMove; image.MouseMove -= picCanvas_MouseMove_MovingSegment; image.MouseUp -= picCanvas_MouseUp_MovingSegment; /* // See if the mouse is over the trash can. if ((e.X >= 0) && (e.X (e.Y >= 0) && (e.Y { if (MessageBox.Show("¿Desea eliminar esta linea?", "", MessageBoxButtons.YesNo) == DialogResult.Yes) { // Delete the segment. Pt1.RemoveAt(MovingSegment); Pt2.RemoveAt(MovingSegment); // Redibujado y regresca la imagen. image.Refresh(); } }*/ } //////////////////////////// PERMITE MANIPULAR LOS PUNTOS DE INICIO O FIN DE LAS LINEAS PARA REDIMENSIONAR. private bool MouseIsOverEndpoint(Point mouse_pt, out int segment_number, out Point hit_pt) { for (int i = 0; i { // Checa el inicio del punto. if (FindDistanceToPointSquared(mouse_pt, Pt1[i]) { segment_number = i; hit_pt = Pt1[i]; return true; } // Checa el final del punto. if (FindDistanceToPointSquared(mouse_pt, Pt2[i]) { segment_number = i; hit_pt = Pt2[i]; return true; } } segment_number = -1; hit_pt = new Point(-1, -1); return false; } /////////// Permite redimensionar la linea con el punto inicial o final.///////////// private void picCanvas_MouseMove_MovingEndPoint(object sender, MouseEventArgs e) { // Permite mover redimensionar la linea dibujada. if (MovingStartEndPoint) { Pt1[MovingSegment] = new Point(e.X, e.Y); image.Refresh(); } else { Pt2[MovingSegment] = new Point(e.X, e.Y); image.Refresh(); } } //////////////// Permite dejar de redimensionar la linea////////////////////////////// private void picCanvas_MouseUp_MovingEndPoint(object sender, MouseEventArgs e) { // Reestablece las funciones. image.MouseMove += image_MouseMove; image.MouseMove -= picCanvas_MouseMove_MovingEndPoint; image.MouseUp -= picCanvas_MouseUp_MovingEndPoint; // Redibuja y refresca la imagen. image.Refresh(); } /////////////////////////// Permite manipular la linea dibujada./////////////////////////// private bool MouseIsOverSegment(Point mouse_pt, out int segment_number) { for (int i = 0; i { // See if we're over the segment. PointF closest; if (FindDistanceToSegmentSquared( mouse_pt, Pt1[i], Pt2[i], out closest) { segment_number = i; return true; } } segment_number = -1; return false; } ///////////////////////// PERMITE TOMAR LINEA AL MOMENTO DE CAMBIAR DE POSICION./////////////////////////////// private void picCanvas_MouseMove_MovingSegment(object sender, MouseEventArgs e) { int new_x1 = e.X + OffsetX; int new_y1 = e.Y + OffsetY; int dx = new_x1 - Pt1[MovingSegment].X; int dy = new_y1 - Pt1[MovingSegment].Y; if (dx == 0 && dy == 0) return; // Move the segment to its new location. Pt1[MovingSegment] = new Point(new_x1, new_y1); Pt2[MovingSegment] = new Point( Pt2[MovingSegment].X + dx, Pt2[MovingSegment].Y + dy); // Redibuja y refresca la imgen para su nueva ubicación. image.Refresh(); } private double FindDistanceToSegmentSquared(Point pt, Point p1, Point p2, out PointF closest) { float dx = p2.X - p1.X; float dy = p2.Y - p1.Y; if ((dx == 0) && (dy == 0)) { closest = p1; dx = pt.X - p1.X; dy = pt.Y - p1.Y; return dx * dx + dy * dy; } // Localiza el mouse en la pantalla. float t = ((pt.X - p1.X) * dx + (pt.Y - p1.Y) * dy) / (dx * dx + dy * dy); if (t { closest = new PointF(p1.X, p1.Y); dx = pt.X - p1.X; dy = pt.Y - p1.Y; } else if (t > 1) { closest = new PointF(p2.X, p2.Y); dx = pt.X - p2.X; dy = pt.Y - p2.Y; } else { closest = new PointF(p1.X + t * dx, p1.Y + t * dy); dx = pt.X - closest.X; dy = pt.Y - closest.Y; } return dx * dx + dy * dy; } ////////////// Localiza el mouse dentro del picture Box.//////////////////// private int FindDistanceToPointSquared(Point pt1, Point pt2) { int dx = pt1.X - pt2.X; int dy = pt1.Y - pt2.Y; return dx * dx + dy * dy; } public void image_MouseDown(object sender, MouseEventArgs e) { if (linea.BackColor == Color.FromA#ff0000 || zoom.BackColor == Color.FromA#ff0000) { Point hit_point; int segment_number; if (MouseIsOverEndpoint(e.Location, out segment_number, out hit_point)) { // Inicia el movimiento de las lineas. image.MouseMove -= image_MouseMove; image.MouseMove += picCanvas_MouseMove_MovingEndPoint; image.MouseUp += picCanvas_MouseUp_MovingEndPoint; // Recuerda el numero de linea.. MovingSegment = segment_number; // Verifica si nos estamos moviendo en el punto final de la linea. MovingStartEndPoint = (Pt1[segment_number].Equals(hit_point)); OffsetX = hit_point.X - e.X; OffsetY = hit_point.Y - e.Y; } else if (MouseIsOverSegment(e.Location, out segment_number)) { // Start moving this segment. image.MouseMove -= image_MouseMove; image.MouseMove += picCanvas_MouseMove_MovingSegment; image.MouseUp += picCanvas_MouseUp_MovingSegment; // Remember the segment number. MovingSegment = segment_number; // Remember the offset from the mouse to the segment's first point. OffsetX = Pt1[segment_number].X - e.X; OffsetY = Pt1[segment_number].Y - e.Y; } else { ////////////////////////// Inicio a dibujar nueva linea. image.MouseMove -= image_MouseMove; image.MouseMove += picCanvas_MouseMove_Drawing; image.MouseUp += picCanvas_MouseUp_Drawing; IsDrawing = true; NewPt1 = new Point(e.X, e.Y); NewPt2 = new Point(e.X, e.Y); } } if (mover.BackColor == Color.FromA#ff0000) { izquierdo = e.X; alto = e.Y; image.Cursor = Cursors.SizeAll; } } IN THIS PART IS BUTTON ZOOM private void zoom_Click(object sender, EventArgs e) { image.Size = new Size(image.Width +50, image.Height +50); image.Refresh(); this.zoomOut.BackColor = Color.Transparent; this.mover.BackColor = Color.Transparent; this.girar.BackColor = Color.Transparent; this.linea.BackColor = Color.Transparent; this.zoom.BackColor = Color.FromA#ff0000; }

Bikesh Srivastava · Answer

Hi, Actually its very minor issue so without code i can't decide where is wrong and what?? so please check again otherwise post your code.

Zoom in/out, rotar image

Answers (3)