/// <summary>
/// Constructs a BilinearResizer.
/// </summary>
/// <param name="old">The old PixelsArray to resize.</param>
/// <param name="res">The result PixelsArray to resize to.</param>
public BilinearResizer(PixelsArray old, PixelsArray res)
{
this.old = old;
this.res = res;
x_ratio = ((float)(old.Width - 1)) / res.Width;
y_ratio = ((float)(old.Height - 1)) / res.Height;
}
/// <summary>
/// Rotates this ManipulableImage 90° to the right.
/// </summary>
/// <param name="pixels">The new array that will be used to store
/// this ManipulableImage's pixels.</param>
public void RotateRight(int[] pixels)
{
PixelsArray old = this.pixels;
this.pixels = new PixelsArray(old.Width, old.Height, pixels);
for (int row = 0; row < Height; row++)
{
for (int col = 0; col < Width; col++)
{
this[row, col] = old[old.Height - 1 - col, row];
}
}
}
/// <summary>
/// Constructs a ManipulableImage.
/// </summary>
/// <param name="height">The height of the image.</param>
/// <param name="width">The width of the image.</param>
/// <param name="pixels">The ARGB color values for each of
/// the image's pixels in row-major order.</param>
public ManipulableImage(int height, int width, int[] pixels)
{
this.pixels = new PixelsArray(height, width, pixels);
}
/// <summary>
/// Resizes this ManipulableImage.
/// </summary>
/// <param name="height">The height to which to resize
/// this ManipulableImage.</param>
/// <param name="width">The width to which to resize
/// this ManipulableImage.</param>
/// <param name="pixels">The new array that will be used to store
/// this ManipulableImage's pixels.</param>
public void Resize(int height, int width, int[] pixels)
{
PixelsArray old = this.pixels;
this.pixels = new PixelsArray(height, width, pixels);
for (int row = 0; row < Height; row++)
{
for (int col = 0; col < Width; col++)
{
this[row, col] = old[
(int)((double)row / Height * old.Height),
(int)((double)col / Width * old.Width)];
}
}
}
/// <summary>
/// Crops this ManipulableImage to the specified Rectangle.
/// </summary>
/// <param name="rect">The Rectangle to crop to.</param>
/// <param name="pixels">The new array that will be used to store
/// this ManipulableImage's pixels.</param>
public void Crop(PixRect rect, int[] pixels)
{
for (int row = rect.Row; row < rect.Row + rect.Height; row++)
{
Buffer.BlockCopy(
Pixels, sizeof(int) * (row * Width + rect.Col),
pixels, sizeof(int) * (row - rect.Row) * rect.Width,
sizeof(int) * rect.Width);
}
this.pixels = new PixelsArray(rect.Height, rect.Width, pixels);
}
/// <summary>
/// Resizes this ManipulableImage using bilinear filtering.
/// </summary>
/// <param name="height">The height to which to resize
/// this ManipulableImage.</param>
/// <param name="width">The width to which to resize
/// this ManipulableImage.</param>
/// <param name="pixels">The new array that will be used to store
/// this ManipulableImage's pixels.</param>
public void BilinearResize(int height, int width, int[] pixels)
{
PixelsArray res = new PixelsArray(height, width, pixels);
BilinearResizer br = new BilinearResizer(this.pixels, res);
br.Resize();
this.pixels = res;
}
