I have written an application in silverlight, I am placing a rectangle on the image and want to select the part of image covered by rectangle and show it on a image control on click of a button.
I am not good at handling ratios and image manipulation things, so I am unable to get it right way.
The code for the same goes as below, and would appreciate, if anyone could suggest me a way or solution to get around with this.
public void CaptureImage(object sender, RoutedEventArgs e)
{
BitmapImage bitmapImage = new BitmapImage();
//// bitmapImage.CreateOptions = BitmapCreateOptions.None;
bitmapImage = NewImage;
////calculate bounding box
int originalWidth = bitmapImage.PixelWidth;
int originalHeight = bitmapImage.PixelHeight;
int newSmallWidth = (int)SquareBlue.Width;
int newSmallHeight = (int)SquareBlue.Height;
////generate temporary control to render image
Image temporaryImage = new Image { Source = bitmapImage, Width = newSmallWidth, Height = newSmallHeight };
////create writeablebitmap
WriteableBitmap wb = new WriteableBitmap(newSmallWidth, newSmallHeight);
TranslateTransform t = new TranslateTransform();
t.X = -5;
t.Y = -5;
wb.Render(temporaryImage, t);
wb.Invalidate();
myImage.Source = wb;
}
Whenever this code gets executed, whole image gets snapped, instead of the part selected by rectangle. Could anyone, guide me as what I am doing wrong here.
