public static void WriteToPbm(string input, string output) { Gdi::Bitmap image = new Gdi::Bitmap(input); int w = image.Width; int h = image.Height; Gdi::Imaging.BitmapData data = image.LockBits( new Gdi::Rectangle(Gdi::Point.Empty, image.Size), Gdi::Imaging.ImageLockMode.ReadOnly, Gdi::Imaging.PixelFormat.Format24bppRgb); System.IO.Stream str = System.IO.File.OpenWrite(output); System.IO.StreamWriter sw = new System.IO.StreamWriter(str, System.Text.Encoding.ASCII); sw.WriteLine("P1"); sw.WriteLine("{0} {1}", w, h); unsafe { int i = 0; for (int y = 0; y < h; y++) { RGB *ppx = (RGB *)((byte *)data.Scan0 + data.Stride * y); RGB *ppxM = ppx + w; while (ppx < ppxM) { sw.Write((ppx++)->Intensity() > 0x80?"0":"1"); if (++i % 64 == 0) { sw.WriteLine(); } else { sw.Write(" "); } } } } sw.Close(); str.Close(); image.UnlockBits(data); image.Dispose(); }
private static void ImageEnlight(Gdi::Bitmap bmp) { // 色を薄くする -> これは GetImage の方に追加するべきではないか Gdi::Imaging.BitmapData data = bmp.LockBits( new Gdi::Rectangle(Gdi::Point.Empty, bmp.Size), Gdi::Imaging.ImageLockMode.ReadWrite, Gdi::Imaging.PixelFormat.Format24bppRgb ); for (int y = 0; y < bmp.Height; y++) { unsafe { byte *p = (byte *)data.Scan0 + data.Stride * y; byte *pM = p + bmp.Width * 3; for (; p < pM; p++) { *p += (byte)((255 - *p) / 3 * 2); //*p/=5; } } } bmp.UnlockBits(data); }
public unsafe static Gdi::Bitmap Transform( Gdi::Bitmap src, int width, int height, Vector2 p1, Vector2 p2, Vector2 p3, Vector2 p4, Vector2 q1, Vector2 q2, Vector2 q3, Vector2 q4 ) { Gdi::Bitmap dst = new Gdi::Bitmap(width, height); Gdi::Rectangle dstRect = new Gdi::Rectangle(Gdi::Point.Empty, dst.Size); Gdi::Imaging.BitmapData dstData = dst.LockBits(dstRect, Gdi::Imaging.ImageLockMode.WriteOnly, Gdi::Imaging.PixelFormat.Format32bppRgb); byte *pdst = (byte *)dstData.Scan0; int stride = dstData.Stride; double[] x_st_table1 = new double[width]; double[] x_st_table2 = new double[width]; double[] y_st_table1 = new double[height]; double[] y_st_table2 = new double[height]; new BezierArcMeasure(p1, p2, q1).InitializeTable(x_st_table1); new BezierArcMeasure(p4, p3, q3).InitializeTable(x_st_table2); new BezierArcMeasure(p1, p4, q4).InitializeTable(y_st_table1); new BezierArcMeasure(p2, p3, q2).InitializeTable(y_st_table2); BezierLine p12 = new BezierLine(p1, p2, q1); BezierLine p43 = new BezierLine(p4, p3, q3); BezierLine p14 = new BezierLine(p1, p4, q4); BezierLine p23 = new BezierLine(p2, p3, q2); using (BicubicInterpolatedImage srcImage = new BicubicInterpolatedImage(src)){ for (int ix = 0; ix < width; ix++) { double xt1 = x_st_table1[ix]; double xt2 = x_st_table2[ix]; double dxt = xt2 - xt1; for (int iy = 0; iy < height; iy++) { double yt1 = y_st_table1[iy]; double yt2 = y_st_table2[iy]; double dyt = yt2 - yt1; double xt = (xt1 + yt1 * dxt) / (1 - dxt * dyt); double yt = (yt1 + xt1 * dyt) / (1 - dxt * dyt); // linear interpolation Vector2 pl = (1 - xt1) * (1 - yt1) * p1 + xt1 * (1 - yt2) * p2 + xt2 * yt2 * p3 + (1 - xt2) * yt1 * p4; // bezier interpolation Vector2 pBx = p43.GetPoint(xt2) * yt + p12.GetPoint(xt1) * (1 - yt); Vector2 pBy = p23.GetPoint(yt2) * xt + p14.GetPoint(yt1) * (1 - xt); Vector2 p = pBx + pBy - pl; *(int *)(pdst + 4 * ix + stride * iy) = srcImage.Get(p.x, p.y); } } } dst.UnlockBits(dstData); return(dst); }