for selecting multiple images
"rivate void addphotos_Click(object sender, EventArgs e)
{
opend1.Filter = "Image Files(*.BMP;*.JPG;*.GIF)|*.BMP;*.JPG;*.GIF|All files (*.*)|*.*";
opend1.Multiselect = true;
imageList.Images.Clear();
listView1.Items.Clear();
if (opend1.ShowDialog() == DialogResult.OK)
{
listView1.View = View.LargeIcon;
imageList.ImageSize = new Size(50,50);
for (int c = 0; c < opend1.FileNames.Length; c++)
{
Image i = Image.FromFile(opend1.FileNames[c].ToString());
Image img = i.GetThumbnailImage(256,256, null, new IntPtr());
imageList.Images.Add(img);
}
listView1.LargeImageList = imageList;
for (int j = 0; j < imageList.Images.Count; j++)
{
ListViewItem lstItem = new ListViewItem();
lstItem.ImageIndex = j;
listView1.Items.Add(lstItem);
}
}
code for rotating single image
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Text;
using System.Windows.Forms;
namespace ImageRotation
{
public partial class Form1 : Form
{
private Image loadedImage;
public Form1()
{
InitializeComponent();
}
private Image RotateImage(Image inputImg, double degreeAngle)
{
//Corners of the image
PointF[] rotationPoints = { new PointF(0, 0),
new PointF(inputImg.Width, 0),
new PointF(0, inputImg.Height),
new PointF(inputImg.Width, inputImg.Height)};
//Rotate the corners
PointMath.RotatePoints(rotationPoints, new PointF(inputImg.Width / 2.0f, inputImg.Height / 2.0f), degreeAngle);
//Get the new bounds given from the rotation of the corners
//(avoid clipping of the image)
Rectangle bounds = PointMath.GetBounds(rotationPoints);
//An empy bitmap to draw the rotated image
Bitmap rotatedBitmap = new Bitmap(bounds.Width, bounds.Height);
using (Graphics g = Graphics.FromImage(rotatedBitmap))
{
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
//Transformation matrix
Matrix m = new Matrix();
m.RotateAt((float)degreeAngle, new PointF(inputImg.Width / 2.0f, inputImg.Height / 2.0f));
m.Translate(-bounds.Left, -bounds.Top, MatrixOrder.Append); //shift to compensate for the rotation
g.Transform = m;
g.DrawImage(inputImg, 0, 0);
}
return (Image)rotatedBitmap;
}
private void trackBar1_Scroll(object sender, EventArgs e)
{
if (loadedImage != null)
pictureBox1.Image = RotateImage(loadedImage, (double)tRotation.Value);
pictureBox1.Refresh();
}
private void btnLoad_Click(object sender, EventArgs e)
{
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
try
{
loadedImage = Image.FromFile(openFileDialog1.FileName);
pictureBox1.Image = loadedImage;
//Reset rotation value
tRotation.Value = 0;
}
catch (Exception)
{
MessageBox.Show("Image invalid.");
}
}
}
private void linkLabel1_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
{
System.Diagnostics.Process.Start("http://www.vcskicks.com/");
}
}
public static class PointMath
{
private static double DegreeToRadian(double angle)
{
return Math.PI * angle / 180.0;
}
public static PointF RotatePoint(PointF pnt, double degreeAngle)
{
return RotatePoint(pnt, new PointF(0, 0), degreeAngle);
}
public static PointF RotatePoint(PointF pnt, PointF origin, double degreeAngle)
{
double radAngle = DegreeToRadian(degreeAngle);
PointF newPoint = new PointF();
double deltaX = pnt.X - origin.X;
double deltaY = pnt.Y - origin.Y;
newPoint.X = (float)(origin.X + (Math.Cos(radAngle) * deltaX - Math.Sin(radAngle) * deltaY));
newPoint.Y = (float)(origin.Y + (Math.Sin(radAngle) * deltaX + Math.Cos(radAngle) * deltaY));
return newPoint;
}
public static void RotatePoints(PointF[] pnts, double degreeAngle)
{
for (int i = 0; i < pnts.Length; i++)
{
pnts[i] = RotatePoint(pnts[i], degreeAngle);
}
}
public static void RotatePoints(PointF[] pnts, PointF origin, double degreeAngle)
{
for (int i = 0; i < pnts.Length; i++)
{
pnts[i] = RotatePoint(pnts[i], origin, degreeAngle);
}
}
public static Rectangle GetBounds(PointF[] pnts)
{
RectangleF boundsF = GetBoundsF(pnts);
return new Rectangle((int)Math.Round(boundsF.Left),
(int)Math.Round(boundsF.Top),
(int)Math.Round(boundsF.Width),
(int)Math.Round(boundsF.Height));
}
public static RectangleF GetBoundsF(PointF[] pnts)
{
float left = pnts[0].X;
float right = pnts[0].X;
float top = pnts[0].Y;
float bottom = pnts[0].Y;
for (int i = 1; i < pnts.Length; i++)
{
if (pnts[i].X < left)
left = pnts[i].X;
else if (pnts[i].X > right)
right = pnts[i].X;
if (pnts[i].Y < top)
top = pnts[i].Y;
else if (pnts[i].Y > bottom)
bottom = pnts[i].Y;
}
return new RectangleF(left,
top,
(float)Math.Abs(right - left),
(float)Math.Abs(bottom - top));
}
}
}
can someone tell me how can i use rotation code for mutiple images.Thanks in advance
AdyPosted Jan 17, 2010, 3:54 PM