/// <summary>
/// once the seam has been calculated, we use this method to shrink the array and remove the unwanted pixels.
/// </summary>
/// <param name="injectedContext"></param>
public void resize(SeamCarvingContext injectedContext)
{
int newSize = ((int)ImageControl.Width - 1) * ((int)ImageControl.Height) * 4;
byte[] newImage = new byte[newSize];
int encountered = 0;
for (int i = 0; i < ImageControl.Width; i++)
{
encountered = 0;
for (int f = 0; f < ImageControl.Height - 1; f++)
{
if (this.seamUtilities.getIndex(injectedContext.dirtyArray, f, i, injectedContext) != 1)
{
for (int k = 0; k < 4; k++)
{
seamUtilities.setPixel(newImage, f - encountered, i, k, seamUtilities.getPixel(injectedContext.imageDataArray, f, i, k, injectedContext), injectedContext);
}
}
else
{
encountered = 1;
}
}
}
ImageControl.Height--;
injectedContext.imageDataArray = newImage;
}
/// <summary>
/// takes in a byte array and a seam context and displays it to the application window as an image.
/// </summary>
/// <param name="toDisplay"></param>
/// <param name="width"></param>
/// <param name="height"></param>
/// <param name="injectedContext"></param>
public void display(byte[] toDisplay, int width, int height, SeamCarvingContext injectedContext)
{
Bitmap newBitmap = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
BitmapData bmData = newBitmap.LockBits(new System.Drawing.Rectangle(0, 0, newBitmap.Width, newBitmap.Height), ImageLockMode.ReadWrite, newBitmap.PixelFormat);
IntPtr pNative = bmData.Scan0;
Marshal.Copy(toDisplay, 0, pNative, width * height * 4);
newBitmap.UnlockBits(bmData);
injectedContext.newBitmapImage = new BitmapImage();
using (MemoryStream memory = new MemoryStream())
{
newBitmap.Save(memory, ImageFormat.Png);
memory.Position = 0;
injectedContext.newBitmapImage.BeginInit();
injectedContext.newBitmapImage.CacheOption = BitmapCacheOption.OnLoad;
injectedContext.newBitmapImage.StreamSource = memory;
injectedContext.newBitmapImage.EndInit();
}
ImageControl.Width = width;
Application.Current.MainWindow.Height = height + 400;
Application.Current.MainWindow.Width = width + 600;
ImageControl.Height = height;
ImageControl.Source = injectedContext.newBitmapImage;
}
/// <summary>
/// constructor
/// </summary>
public MainWindow()
{
InitializeComponent();
this.context = new SeamCarvingContext();
this.context.Height = ImageControl.Height;
this.context.Width = ImageControl.Width;
this.seamUtilities = new SeamUtilities();
this.gradientCalculator = new GradientCalculator(seamUtilities);
this.heatCalculator = new HeatCalculator(seamUtilities);
this.seamCalculator = new SeamCalculator(seamUtilities);
}
public void basicSuccess()
{
int x = 3;
int y = 3;
var mock = new Mock <ISeamUtilities>();
mock.Setup(m => m.findMinIndex(It.IsAny <int[]>(), It.IsAny <SeamCarvingContext>())).Returns(0);
var testContext = new SeamCarvingContext()
{
energy = new int[x * y], dirtyArray = new int[x * y]
};
for (int i = 0; i < x; i++)
{
testContext.energy[i] = 0;
}
for (int i = x; i < testContext.energy.Length; i++)
{
testContext.energy[i] = Int32.MaxValue;
}
var testSeamCalculator = new SeamCalculator(mock.Object);
testSeamCalculator.calculateSeam(testContext);
for (int i = 0; i < x; i++)
{
Assert.AreEqual(testContext.dirtyArray[i], 1);
}
for (int i = x; i < testContext.energy.Length; i++)
{
Assert.AreEqual(testContext.dirtyArray[i], 0);
}
}