public void GetScaledInstance()
{
using (FreeImageBitmap fib = new FreeImageBitmap(100, 80, PixelFormat.Format32bppArgb))
{
Assert.AreEqual(100, fib.Width);
Assert.AreEqual(80, fib.Height);
using (FreeImageBitmap conv = fib.GetScaledInstance(80, 60, FREE_IMAGE_FILTER.FILTER_BICUBIC))
{
Assert.IsNotNull(conv);
Assert.AreEqual(80, conv.Width);
Assert.AreEqual(60, conv.Height);
}
}
}
/// <summary>
/// 旋转图片
/// </summary>
/// <param name="vRotate">旋转角度</param>
public void RotateImage(double vRotate)
{
if (isBitmap)
{
// Create a temporary rescaled bitmap
using (FreeImageBitmap temp = bitmap.GetScaledInstance(resultbmp.Width, resultbmp.Height, FREE_IMAGE_FILTER.FILTER_CATMULLROM))
{
if (temp != null)
{
// Rotate the bitmap
temp.Rotate(vRotate);
if (resultbmp != null)
{
resultbmp.Dispose();
}
// Display the result
resultbmp = (Bitmap)temp;
}
}
}
}
private void bRotate_Click(object sender, EventArgs e)
{
if (Bitmap)
{
// Create a temporary rescaled bitmap
using (FreeImageBitmap temp = bitmap.GetScaledInstance(
pictureBox.DisplayRectangle.Width, pictureBox.DisplayRectangle.Height,
FREE_IMAGE_FILTER.FILTER_CATMULLROM))
{
if (temp != null)
{
// Rotate the bitmap
temp.Rotate((double)vRotate.Value);
if (pictureBox.Image != null)
{
pictureBox.Image.Dispose();
}
// Display the result
pictureBox.Image = (Bitmap)temp;
}
}
}
}
/// <summary>
/// Gets a new buffer with the specified size.
/// </summary>
/// <returns>The scaled buffer.</returns>
/// <param name="NewSize">New size.</param>
public PixelBuffer GetScaledBuffer(Vector2i newSize, FilteringType filtering)
{
FreeImageBitmap Scaled;
using (FreeImageBitmap Bmp = new FreeImageBitmap(BufferSize.Width, BufferSize.Height, BufferSize.Width * 4, PixelFormat.Format32bppArgb, Pixels))
{
// Get scaled bitmap
Scaled = Bmp.GetScaledInstance(newSize, (FREE_IMAGE_FILTER)filtering);
}
PixelBuffer buffer = new PixelBuffer(newSize);
// Convert from GBRA to RGBA
int z = 0;
for (int i = newSize.Height - 1; i >= 0; i--, z++)
{
Marshal.Copy(Scaled.Bits + (z * newSize.Width * 4), buffer.Pixels, i * newSize.Width * 4, newSize.Width * 4);
}
Scaled.Dispose();
return(buffer);
}
public void GetScaledInstance()
{
using (FreeImageBitmap fib = new FreeImageBitmap(100, 80, PixelFormat.Format32bppArgb))
{
Assert.AreEqual(100, fib.Width);
Assert.AreEqual(80, fib.Height);
using (FreeImageBitmap conv = fib.GetScaledInstance(80, 60, FREE_IMAGE_FILTER.FILTER_BICUBIC))
{
Assert.IsNotNull(conv);
Assert.AreEqual(80, conv.Width);
Assert.AreEqual(60, conv.Height);
}
}
}
private static FreeImageBitmap GetScaledBmp(FreeImageBitmap bitmap)
{
var bmp = bitmap;
if (bitmap.Width > MaxTextureWidth || bitmap.Height > MaxTextureHeight)
{
bmp = bitmap.GetScaledInstance(Math.Min(MaxTextureWidth, bitmap.Width),
Math.Min(MaxTextureHeight, bitmap.Height),
FREE_IMAGE_FILTER.FILTER_LANCZOS3);
}
return bmp;
}
