public void SaveMinimapBlock(string outputDir, int nLayer, int uX, int uY, Bitmap bmp)
{
string fileName = Path.Combine(outputDir, string.Format("{0}_{1}_{2}plus.tga", nLayer, uY, uX));
if (!IsBmpDataNull(bmp))
{
Rectangle rectangle = new Rectangle(0, 0, bmp.Width, bmp.Height);
BitmapData bitmapData = bmp.LockBits(rectangle, ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
// 如果目标目录不存在则先创建目录
if (!Directory.Exists(outputDir))
{
Directory.CreateDirectory(outputDir);
}
FileStream fs = new FileStream(fileName, FileMode.OpenOrCreate);
byte[] buffer;
List<byte> byteList = new List<byte>();
TgaFileHeader tgaFileHeader = new TgaFileHeader();
tgaFileHeader.Width = (short)bitmapData.Width;
tgaFileHeader.Height = (short)bitmapData.Height;
tgaFileHeader.PixelDep = 24;
if (bitmapData.PixelFormat == PixelFormat.Format32bppArgb)
{
tgaFileHeader.PixelDep = 32;
}
tgaFileHeader.ImageType = 2;
tgaFileHeader.Desc = 8;
// 写入header
byteList.Add(tgaFileHeader.IDLength);
byteList.Add(tgaFileHeader.ColorMapType);
byteList.Add(tgaFileHeader.ImageType);
byteList.AddRange(tgaFileHeader.ColorMapSpec);
buffer = BitConverter.GetBytes(tgaFileHeader.X);
byteList.AddRange(buffer);
buffer = BitConverter.GetBytes(tgaFileHeader.Y);
byteList.AddRange(buffer);
buffer = BitConverter.GetBytes(tgaFileHeader.Width);
byteList.AddRange(buffer);
buffer = BitConverter.GetBytes(tgaFileHeader.Height);
byteList.AddRange(buffer);
byteList.Add(tgaFileHeader.PixelDep);
byteList.Add(tgaFileHeader.Desc);
// 需要用Interop来移动数据，真麻烦
IntPtr ptr = bitmapData.Scan0;
byte[] bmpBuffer = new byte[(int)(bitmapData.Width * bitmapData.Stride)];
System.Runtime.InteropServices.Marshal.Copy(ptr, bmpBuffer, 0, bmpBuffer.Length);
int blockSize = bitmapData.Width * tgaFileHeader.PixelDep / 8;
for (int i = 0; i < bmp.Height; i++)
{
for (int j = 0; j < blockSize; j++)
{
byteList.Add(bmpBuffer[(bmp.Height - i - 1) * bitmapData.Stride + j]);
}
}
buffer = byteList.ToArray();
fs.Write(buffer, 0, buffer.Length);
fs.Close();
// 需要用Interop来移动数据，真麻烦
System.Runtime.InteropServices.Marshal.Copy(bmpBuffer, 0, ptr, bmpBuffer.Length);
bmp.UnlockBits(bitmapData);
}
}
public void SaveMinimapBlock(string outputDir, int nLayer, int uX, int uY, Bitmap bmp)
{
string fileName = Path.Combine(outputDir, string.Format("{0}_{1}_{2}plus.tga", nLayer, uY, uX));
if (!IsBmpDataNull(bmp))
{
Rectangle rectangle = new Rectangle(0, 0, bmp.Width, bmp.Height);
BitmapData bitmapData = bmp.LockBits(rectangle, ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
// 如果目标目录不存在则先创建目录
if (!Directory.Exists(outputDir))
{
Directory.CreateDirectory(outputDir);
}
FileStream fs = new FileStream(fileName, FileMode.OpenOrCreate);
byte[] buffer;
List <byte> byteList = new List <byte>();
TgaFileHeader tgaFileHeader = new TgaFileHeader();
tgaFileHeader.Width = (short)bitmapData.Width;
tgaFileHeader.Height = (short)bitmapData.Height;
tgaFileHeader.PixelDep = 24;
if (bitmapData.PixelFormat == PixelFormat.Format32bppArgb)
{
tgaFileHeader.PixelDep = 32;
}
tgaFileHeader.ImageType = 2;
tgaFileHeader.Desc = 8;
// 写入header
byteList.Add(tgaFileHeader.IDLength);
byteList.Add(tgaFileHeader.ColorMapType);
byteList.Add(tgaFileHeader.ImageType);
byteList.AddRange(tgaFileHeader.ColorMapSpec);
buffer = BitConverter.GetBytes(tgaFileHeader.X);
byteList.AddRange(buffer);
buffer = BitConverter.GetBytes(tgaFileHeader.Y);
byteList.AddRange(buffer);
buffer = BitConverter.GetBytes(tgaFileHeader.Width);
byteList.AddRange(buffer);
buffer = BitConverter.GetBytes(tgaFileHeader.Height);
byteList.AddRange(buffer);
byteList.Add(tgaFileHeader.PixelDep);
byteList.Add(tgaFileHeader.Desc);
// 需要用Interop来移动数据，真麻烦
IntPtr ptr = bitmapData.Scan0;
byte[] bmpBuffer = new byte[(int)(bitmapData.Width * bitmapData.Stride)];
System.Runtime.InteropServices.Marshal.Copy(ptr, bmpBuffer, 0, bmpBuffer.Length);
int blockSize = bitmapData.Width * tgaFileHeader.PixelDep / 8;
for (int i = 0; i < bmp.Height; i++)
{
for (int j = 0; j < blockSize; j++)
{
byteList.Add(bmpBuffer[(bmp.Height - i - 1) * bitmapData.Stride + j]);
}
}
buffer = byteList.ToArray();
fs.Write(buffer, 0, buffer.Length);
fs.Close();
// 需要用Interop来移动数据，真麻烦
System.Runtime.InteropServices.Marshal.Copy(bmpBuffer, 0, ptr, bmpBuffer.Length);
bmp.UnlockBits(bitmapData);
}
}
