private void GetBitmapRectangle()
{
// Define format, manipulation mode and area to modify
System.Drawing.Imaging.PixelFormat pxf = System.Drawing.Imaging.PixelFormat.Format24bppRgb;
System.Drawing.Imaging.ImageLockMode ilm = System.Drawing.Imaging.ImageLockMode.ReadWrite;
Rectangle r = new Rectangle(0, 0, bm.Width, bm.Height);
// Lock the bitmap bits
System.Drawing.Imaging.BitmapData bmData = this.bm.LockBits(r, ilm, pxf);
// Get the address of the first line
IntPtr ptr = bmData.Scan0;
// Declare an array to hold the bytes of the bitmap
int numBytes = bm.Width * bm.Height * 3;
byte[] rgbValues = new byte[numBytes];
// Copy the RGB values into the array.
System.Runtime.InteropServices.Marshal.Copy(ptr, rgbValues, 0, numBytes);
// Manipulate the bitmap, such as changing the
// blue value for every other pixel in the bitmap.
for (int counter = 0; counter < rgbValues.Length; counter += 6)
{
rgbValues[counter] = 200;
}
// Copy the RGB values back to the bitmap
System.Runtime.InteropServices.Marshal.Copy(rgbValues, 0, ptr, numBytes);
// Unlock the bits
bm.UnlockBits(bmData);
}
void FilerImage()
{
// Copy Image to Bitmap
System.Drawing.Rectangle ImageBounds = new System.Drawing.Rectangle(0, 0, Bitmap.Width, Bitmap.Height);
System.Drawing.Imaging.ImageLockMode Mode = System.Drawing.Imaging.ImageLockMode.ReadWrite;
System.Drawing.Imaging.PixelFormat Format = Bitmap.PixelFormat;
System.Drawing.Imaging.BitmapData BitmapData = Bitmap.LockBits(ImageBounds, Mode, Format);
System.IntPtr ptr = BitmapData.Scan0;
System.Runtime.InteropServices.Marshal.Copy(FilterdAndCroppedDepthImage, 0, ptr, FilterdAndCroppedDepthImage.Length);
Bitmap.UnlockBits(BitmapData);
//Apply Filter
Blur.ApplyInPlace(Bitmap);
//Copy Bitmap back to Image
BitmapData = Bitmap.LockBits(ImageBounds, Mode, Format);
ptr = BitmapData.Scan0;
System.Runtime.InteropServices.Marshal.Copy(ptr, FilterdAndCroppedDepthImage, 0, FilterdAndCroppedDepthImage.Length);
Bitmap.UnlockBits(BitmapData);
}
void FilerImage()
{
// Copy Image to Bitmap
System.Drawing.Rectangle ImageBounds = new System.Drawing.Rectangle(0, 0, Bitmap.Width, Bitmap.Height);
System.Drawing.Imaging.ImageLockMode Mode = System.Drawing.Imaging.ImageLockMode.ReadWrite;
System.Drawing.Imaging.PixelFormat Format = Bitmap.PixelFormat;
System.Drawing.Imaging.BitmapData BitmapData = Bitmap.LockBits(ImageBounds, Mode, Format);
System.IntPtr ptr = BitmapData.Scan0;
short[] shortBuffer = Array.ConvertAll(FilterdAndCroppedDepthImage, (value) => (short)value);
System.Runtime.InteropServices.Marshal.Copy(shortBuffer, 0, ptr, shortBuffer.Length);
Bitmap.UnlockBits(BitmapData);
//Apply Filter
//Blur.ApplyInPlace(Bitmap);
//Copy Bitmap back to Image
BitmapData = Bitmap.LockBits(ImageBounds, Mode, Format);
ptr = BitmapData.Scan0;
System.Runtime.InteropServices.Marshal.Copy(ptr, shortBuffer, 0, shortBuffer.Length);
FilterdAndCroppedDepthImage = Array.ConvertAll(shortBuffer, (value) => (ushort)value);
Bitmap.UnlockBits(BitmapData);
}
public void OpenData(System.Drawing.Imaging.ImageLockMode mode, bool flip)
{
this.data = this.bitmap.LockBits(new System.Drawing.Rectangle(0, 0, this.width, this.height), mode, System.Drawing.Imaging.PixelFormat.Format8bppIndexed);
unsafe
{
this.pixels = (byte *)this.data.Scan0;
if (flip)
{
this.pixels += this.height * this.data.Stride;
}
}
}
// 这是用LockBits方式计算的，速度较快。
/// <summary>
/// 根据色板获取位图。
/// </summary>
/// <param name="colorPalette"></param>
/// <returns></returns>
private static Bitmap CreateTextureImage(this ColorPalette colorPalette, int width = 1000, int height = 1)
{
System.Drawing.Imaging.PixelFormat format = System.Drawing.Imaging.PixelFormat.Format32bppRgb;
System.Drawing.Imaging.ImageLockMode lockMode = System.Drawing.Imaging.ImageLockMode.WriteOnly;
System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(width, height, format);
Rectangle bitmapRect = new Rectangle(0, 0, bitmap.Width, bitmap.Height);
System.Drawing.Imaging.BitmapData bmpData = bitmap.LockBits(bitmapRect, lockMode, format);
int length = Math.Abs(bmpData.Stride) * bitmap.Height;
byte[] bitmapBytes = new byte[length];
for (int i = 0; i < colorPalette.Colors.Length - 1; i++)
{
int left = (int)(width * colorPalette.Coords[i]);
int right = (int)(width * colorPalette.Coords[i + 1]);
GLColor leftColor = colorPalette.Colors[i];
GLColor rightColor = colorPalette.Colors[i + 1];
for (int col = left; col < right; col++)
{
Color color = (leftColor * ((right - col) * 1.0f / (right - left)) + rightColor * ((col - left) * 1.0f / (right - left)));
for (int row = 0; row < height; row++)
{
bitmapBytes[row * bmpData.Stride + col * 4 + 0] = color.B;
bitmapBytes[row * bmpData.Stride + col * 4 + 1] = color.G;
bitmapBytes[row * bmpData.Stride + col * 4 + 2] = color.R;
}
}
}
System.Runtime.InteropServices.Marshal.Copy(bitmapBytes, 0, bmpData.Scan0, length);
bitmap.UnlockBits(bmpData);
return(bitmap);
}
/// <summary>
/// 根据<paramref name="charInfoDict"/>等信息把各个字形写入一个大的位图并返回之。
/// </summary>
/// <param name="face"></param>
/// <param name="fontHeight"></param>
/// <param name="firstChar"></param>
/// <param name="lastChar"></param>
/// <param name="maxTextureWidth"></param>
/// <param name="charInfoDict"></param>
/// <param name="textureWidth"></param>
/// <param name="textureHeight"></param>
/// <returns></returns>
private static IEnumerable <TTFTextureYeildingState> GetBigBitmap(
FreeTypeFace face, int fontHeight, int maxTextureWidth,
char firstChar, char lastChar,
Dictionary <char, CharacterInfo> charInfoDict, int textureWidth, int textureHeight)
{
int count = lastChar - firstChar;
int index = 0;
System.Drawing.Bitmap bigBitmap = new System.Drawing.Bitmap(textureWidth, textureHeight);
Graphics graphics = Graphics.FromImage(bigBitmap);
for (char c = firstChar; c <= lastChar; c++)
{
FreeTypeBitmapGlyph glyph = new FreeTypeBitmapGlyph(face, c, fontHeight);
int size = glyph.obj.bitmap.width * glyph.obj.bitmap.rows;
{
bool zeroBuffer = glyph.obj.bitmap.buffer == IntPtr.Zero;
if ((size == 0) && (!zeroBuffer))
{
throw new Exception(string.Format("glyph size({0}) for non zero buffer({1})", 0, glyph.obj.bitmap.buffer));
}
if ((size != 0) && zeroBuffer)
{
throw new Exception(string.Format("glyph size({0}) for zero buffer({1})", size, glyph.obj.bitmap.buffer));
}
}
byte[] byteBitmap = null;
if ((c == ' ') && (size == 0))
{
size = charInfoDict[' '].width * charInfoDict[' '].height;
byteBitmap = new byte[size];
}
else if ((c == '\t') && (size == 0))
{
size = charInfoDict['\t'].width * charInfoDict['\t'].height;
byteBitmap = new byte[size];
}
else if (size != 0)
{
byteBitmap = new byte[size];
Marshal.Copy(glyph.obj.bitmap.buffer, byteBitmap, 0, byteBitmap.Length);
}
if (size != 0)
{
CharacterInfo cInfo;
if (charInfoDict.TryGetValue(c, out cInfo))
{
if (cInfo.width > 0 && cInfo.height > 0)
{
System.Drawing.Imaging.PixelFormat format = System.Drawing.Imaging.PixelFormat.Format32bppRgb;
System.Drawing.Imaging.ImageLockMode lockMode = System.Drawing.Imaging.ImageLockMode.WriteOnly;
System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(cInfo.width, cInfo.height, format);
Rectangle bitmapRect = new Rectangle(0, 0, bitmap.Width, bitmap.Height);
System.Drawing.Imaging.BitmapData bmpData = bitmap.LockBits(bitmapRect, lockMode, format);
int length = Math.Abs(bmpData.Stride) * bitmap.Height;
byte[] bitmapBytes = new byte[length];
for (int row = 0; row < cInfo.height; row++)
{
for (int col = 0; col < cInfo.width; col++)
{
byte color = byteBitmap[row * cInfo.width + col];
bitmapBytes[row * bmpData.Stride + col * 4 + 0] = color;
bitmapBytes[row * bmpData.Stride + col * 4 + 1] = color;
bitmapBytes[row * bmpData.Stride + col * 4 + 2] = color;
//bitmapBytes[row * bmpData.Stride + col * 4 + 3] = color;
}
}
System.Runtime.InteropServices.Marshal.Copy(bitmapBytes, 0, bmpData.Scan0, length);
bitmap.UnlockBits(bmpData);
//int baseLine = fontHeight * 3 / 4 + 4;
//graphics.DrawImage(bitmap, cInfo.xoffset, cInfo.yoffset + baseLine - glyph.obj.top);
int skyHeight = fontHeight * 3 / 4 - glyph.obj.top;
if (skyHeight < 0)
{
skyHeight = 0;
}
graphics.DrawImage(bitmap, cInfo.xoffset, cInfo.yoffset + skyHeight);
}
}
else
{
throw new Exception(string.Format("Not support for display the char [{0}]", c));
}
}
if (c == char.MaxValue)
{
break;
}
yield return(new TTFTextureYeildingState()
{
percent = index++ *100 / count,
message = c.ToString(),//string.Format("print glyph for [{0}]", c),
});
}
graphics.Dispose();
yield return(new TTFTextureYeildingState()
{
percent = index++ *100 / count,
bigBitmap = bigBitmap,
message = "texture is ready",
});
}
public System.Drawing.Imaging.BitmapData LockBits(Rectangle rect, System.Drawing.Imaging.ImageLockMode flags, System.Drawing.Imaging.PixelFormat format, System.Drawing.Imaging.BitmapData bitmapData)
{
}
public BitmapWithAccess(Bitmap bitmap, System.Drawing.Imaging.ImageLockMode lockMode)
{
Bitmap = bitmap;
BitmapData = bitmap.LockBits(new Rectangle(Point.Empty, bitmap.Size), lockMode, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
}