public static BitmapRam ToBitmapRam(this BitmapSource src)
{
var result = new BitmapRam(src.PixelWidth, src.PixelHeight);
result.CopyPixelsFrom(src);
return(result);
}
public BitmapRam ToBitmapRam()
{
var result = new BitmapRam(Width, Height);
result.CopyPixelsFrom(this);
return(result);
}
public void Blur(GaussianBlur blur, BlurEdgeMode edgeMode)
{
var temp = new BitmapRam(Width, Height);
using (UseWrite())
using (temp.UseWrite())
{
PreMultiply();
blur.Horizontal(this, temp, edgeMode);
blur.Vertical(temp, this, edgeMode);
UnPreMultiply();
}
}
/// <summary>Loads a .tga image directly into a <see cref="BitmapRam"/> instance.</summary>
public static BitmapRam Load(Stream file)
{
var header = file.Read(18);
if (header[0] != 0)
{
throw new NotSupportedException("Only images with no offset are supported");
}
if (header[1] != 0)
{
throw new NotSupportedException("Only RGB images are supported");
}
if (header[2] != 2)
{
throw new NotSupportedException("Only RGB images are supported");
}
if (header[8] != 0 || header[9] != 0 || header[10] != 0 || header[11] != 0)
{
throw new NotSupportedException("Only images with origin at 0,0 are supported");
}
var width = (header[13] << 8) + header[12];
var height = (header[15] << 8) + header[14];
if (width > 2048 || height > 2048) // an arbitrary limit; more for sanity check than anything else
{
throw new NotSupportedException("Only images up to 2048x2048 are supported");
}
if (width == 0 || height == 0)
{
throw new NotSupportedException("Images with a zero width or height are not supported");
}
if (header[16] != 32)
{
throw new NotSupportedException("Only 32 bits per pixel images are supported");
}
bool rightWayUp = (header[17] & 32) != 0;
var raw = file.Read(width * height * 4);
var result = new BitmapRam(width, height);
result.CopyPixelsFrom(raw, width, height, width * 4, !rightWayUp);
return(result);
}
/// <summary>Loads a .tga image directly into a <see cref="BitmapRam"/> instance.</summary>
public static BitmapRam Load(Stream file)
{
var header = file.Read(18);
if (header[0] != 0) throw new NotSupportedException("Only images with no offset are supported");
if (header[1] != 0) throw new NotSupportedException("Only RGB images are supported");
if (header[2] != 2) throw new NotSupportedException("Only RGB images are supported");
if (header[8] != 0 || header[9] != 0 || header[10] != 0 || header[11] != 0)
throw new NotSupportedException("Only images with origin at 0,0 are supported");
var width = (header[13] << 8) + header[12];
var height = (header[15] << 8) + header[14];
if (width > 2048 || height > 2048) // an arbitrary limit; more for sanity check than anything else
throw new NotSupportedException("Only images up to 2048x2048 are supported");
if (width == 0 || height == 0)
throw new NotSupportedException("Images with a zero width or height are not supported");
if (header[16] != 32) throw new NotSupportedException("Only 32 bits per pixel images are supported");
bool rightWayUp = (header[17] & 32) != 0;
var raw = file.Read(width * height * 4);
var result = new BitmapRam(width, height);
result.CopyPixelsFrom(raw, width, height, width * 4, !rightWayUp);
return result;
}
public void Blur(GaussianBlur blur, BlurEdgeMode edgeMode)
{
var temp = new BitmapRam(Width, Height);
using (UseWrite())
using (temp.UseWrite())
{
PreMultiply();
blur.Horizontal(this, temp, edgeMode);
blur.Vertical(temp, this, edgeMode);
UnPreMultiply();
}
}
public BitmapRam ToBitmapRam()
{
var result = new BitmapRam(Width, Height);
result.CopyPixelsFrom(this);
return result;
}
public static BitmapRam ToBitmapRam(this BitmapSource src)
{
var result = new BitmapRam(src.PixelWidth, src.PixelHeight);
result.CopyPixelsFrom(src);
return result;
}
public static unsafe BitmapBase SizePos(BitmapBase source, double scaleWidth, double scaleHeight, int inX, int inY, int outX, int outY, int maxWidth = 0, int maxHeight = 0, Filter filter = null)
{
if (source.Width <= 0 || source.Height <= 0)
{
return(source.ToBitmapSame());
}
PixelRect pureImg = source.PreciseSize(0);
if (pureImg.Width <= 0 || pureImg.Height <= 0)
{
return(source.ToBitmapSame());
}
int outWidth = (int)Math.Round(pureImg.Width * scaleWidth);
int outHeight = (int)Math.Round(pureImg.Height * scaleHeight);
if (scaleWidth == 1 && scaleHeight == 1)
{
//no resize needed
if (inX != outX || inY != outY)
{
BitmapBase result;
if (maxWidth == 0 && maxHeight == 0)
{
result = new BitmapRam(outX - inX + source.Width, outY - inY + source.Height);
}
else
{
result = new BitmapRam(Math.Min(outX - inX + source.Width, maxWidth), Math.Min(outY - inY + source.Height, maxHeight));
}
result.DrawImage(source, outX - inX, outY - inY);
return(result);
}
else
{
return(source.ToBitmapSame());
}
}
if (filter == null)
{
if (scaleWidth < 1)
{
filter = new LanczosFilter();
}
else
{
filter = new MitchellFilter();
}
}
int transparentOffset;
if (pureImg.Left != 0 || pureImg.Top != 0)
{
transparentOffset = pureImg.Left * 4 + pureImg.Top * source.Stride;
// Resample looks better if transprent pixels is cropped. Especially if the image is square
// Data+DataOffset, pureImg.Width, pureImg.Height instead of Data, Width, Height works like left-top cropping
}
else
{
transparentOffset = 0;
}
BitmapBase afterHorzResample, afterVertResample;
// Horizontal resampling
if (scaleWidth == 1)
{
afterHorzResample = source;
}
else
{
afterHorzResample = new BitmapRam(outWidth, pureImg.Height);
ContributorEntry[] contrib = filter.PrecomputeResample(scaleWidth, pureImg.Width, outWidth);
Resample1D(afterHorzResample, source, transparentOffset, contrib, outWidth, pureImg.Height, true);
transparentOffset = 0;
}
// Vertical resampling
if (scaleHeight == 1)
{
afterVertResample = afterHorzResample;
}
else
{
afterVertResample = new BitmapRam(outWidth, outHeight);
ContributorEntry[] contrib = filter.PrecomputeResample(scaleHeight, pureImg.Height, outHeight);
Resample1D(afterVertResample, afterHorzResample, transparentOffset, contrib, outHeight, outWidth, false);
}
BitmapBase final;
//At this point image will be resized and moved to another BitmapBase anyway
int drawX = outX - (int)Math.Round((inX - pureImg.Left) * scaleWidth);
int drawY = outY - (int)Math.Round((inY - pureImg.Top) * scaleHeight);
if (maxWidth == 0 && maxHeight == 0)
{
final = new BitmapRam(Math.Max(drawX + outWidth, maxWidth), Math.Max(drawY + outHeight, maxHeight));
}
else
{
final = new BitmapRam(Math.Max(drawX + outWidth, maxWidth), Math.Max(drawY + outHeight, maxHeight));
}
final.DrawImage(afterVertResample, drawX, drawY);
return(final);
}
