internal WIL(String wilPath)
{
Loaded = false;
VerFlag = 0;
if (!File.Exists(Path.ChangeExtension(wilPath, "wix")))
{
return;
}
FileStream fs_wix = new FileStream(Path.ChangeExtension(wilPath, "wix"), FileMode.Open, FileAccess.Read);
FS_wil = new FileStream(wilPath, FileMode.Open, FileAccess.Read);
fs_wix.Position += 44; // 跳过标题
using (BinaryReader rwix = new BinaryReader(fs_wix))
{
int indexCount = rwix.ReadInt32(); // 索引数量(也是图片数量)
if (VerFlag != 0)
{
fs_wix.Position += 4; // 版本标识不为0需要跳过4字节
}
OffsetList = new int[indexCount + 1];
for (int i = 0; i < indexCount; ++i)
{
// 读取数据偏移量
OffsetList[i] = rwix.ReadInt32();
}
OffsetList[indexCount] = (int)FS_wil.Length;
}
//fs_wix.Dispose();
FS_wil.Position += 44; // 跳过标题
BR_wil = new BinaryReader(FS_wil);
ImageCount = BR_wil.ReadInt32(); // 图片数量
ColorCount = Delphi.ColorCountToBitCount(BR_wil.ReadInt32()); // 色深度
if (ColorCount < 16)
{
// 8位灰度图可能版本标识不为0，此时操作不一样
FS_wil.Position += 4; // 忽略调色板
VerFlag = BR_wil.ReadInt32();
}
ImageInfos = new M2ImageInfo[ImageCount];
for (int i = 0; i < ImageCount; ++i)
{
// 读取图片信息
M2ImageInfo ii = new M2ImageInfo();
FS_wil.Position = OffsetList[i];
ii.Width = BR_wil.ReadUInt16();
ii.Height = BR_wil.ReadUInt16();
ii.OffsetX = BR_wil.ReadInt16();
ii.OffsetY = BR_wil.ReadInt16();
ImageInfos[i] = ii;
}
Loaded = true;
}
/// <summary>
/// 获取某个索引的图片
/// </summary>
/// <param name="index">图片索引，从0开始</param>
/// <returns>对应图片数据</returns>
internal U3d.Texture2D this[uint index]
{
get
{
M2ImageInfo ii = ImageInfos[index];
U3d.Texture2D result = new U3d.Texture2D(ii.Width, ii.Height);
if (ii.Width == 0 && ii.Height == 0)
{
return(result);
}
byte[] pixels = null;
lock (wzl_locker)
{
FS_wzl.Position = OffsetList[index] + 16;
using (BinaryReader rwzl = new BinaryReader(FS_wzl))
{
pixels = unzip(rwzl.ReadBytes(LengthList[index]));
}
}
int p_index = 0;
for (int h = 0; h < ii.Height; ++h)
{
for (int w = 0; w < ii.Width; ++w)
{
// 跳过填充字节
if (w == 0)
{
p_index += Delphi.SkipBytes(8, ii.Width);
}
float[] pallete = Delphi.PALLETE[pixels[p_index++] & 0xff];
result.SetPixel(w, ii.Height - h, new U3d.Color(pallete[1], pallete[2], pallete[3], pallete[0]));
}
}
result.Apply();
return(result);
}
}
/// <summary>
/// 获取某个索引的图片
/// </summary>
/// <param name="index">图片索引，从0开始</param>
/// <returns>对应图片数据</returns>
internal U3d.Texture2D this[uint index]
{
get
{
M2ImageInfo ii = ImageInfos[index];
U3d.Texture2D result = new U3d.Texture2D(ii.Width, ii.Height);
byte[] pixels = null;
lock (wil_locker)
{
FS_wil.Position = OffsetList[index] + 8;
int pixelLength = OffsetList[index + 1] - OffsetList[index];
if (pixelLength < 13)
{
return(result);
}
pixels = BR_wil.ReadBytes(pixelLength);
}
if (ColorCount == 8)
{
int p_index = 0;
for (int h = ii.Height - 1; h >= 0; --h)
{
for (int w = 0; w < ii.Width; ++w)
{
// 跳过填充字节
if (w == 0)
{
p_index += Delphi.SkipBytes(8, ii.Width);
}
float[] pallete = Delphi.PALLETE[pixels[p_index++] & 0xff];
result.SetPixel(w, ii.Height - h, new U3d.Color(pallete[1], pallete[2], pallete[3], pallete[0]));
}
}
}
else if (ColorCount == 16)
{
using (MemoryStream mspixels = new MemoryStream(pixels))
{
using (BinaryReader rpixels = new BinaryReader(mspixels))
{
int p_index = 0;
for (int h = ii.Height - 1; h >= 0; --h)
{
for (int w = 0; w < ii.Width; ++w, p_index += 2)
{
// 跳过填充字节
if (w == 0)
{
p_index += Delphi.SkipBytes(16, ii.Width);
}
short pdata = rpixels.ReadInt16();
float br = (((pdata & 0xF800) >> 8) / 255f); //byte br = (byte) ((data & 0b1111_1000_0000_0000) >> 8);// 由于是与16位做与操作，所以多出了后面8位
float bg = (((pdata & 0x7E0) >> 3) / 255f); //byte bg = (byte) ((data & 0b0000_0111_1110_0000) >> 3);// 多出了3位，在强转时前8位会自动丢失
float bb = (((pdata & 0x1F) << 3) / 255f); //byte bb = (byte) ((data & 0b0000_0000_0001_1111) << 3);// 少了3位
result.SetPixel(w, ii.Height - h, new U3d.Color(br, bg, bb));
}
}
}
}
}
result.Apply();
return(result);
}
}
