//---------------------------------------------------------------- public void Begin(double x, double y, uint len) { // Calculate transformed Coordinates At x1,y1 double xt = x; double yt = y; m_trans_dir.Transform(ref xt, ref yt); int x1 = Basics.Round(xt * subpixel_scale); int y1 = Basics.Round(yt * subpixel_scale); double dx; double dy; double delta = 1 / (double)subpixel_scale; // Calculate Scale by X At x1,y1 dx = xt + delta; dy = yt; m_trans_inv.Transform(ref dx, ref dy); dx -= x; dy -= y; int sx1 = (int)Basics.UnsignedRound(subpixel_scale / Math.Sqrt(dx * dx + dy * dy)) >> subpixel_shift; // Calculate Scale by Y At x1,y1 dx = xt; dy = yt + delta; m_trans_inv.Transform(ref dx, ref dy); dx -= x; dy -= y; int sy1 = (int)Basics.UnsignedRound(subpixel_scale / Math.Sqrt(dx * dx + dy * dy)) >> subpixel_shift; // Calculate transformed Coordinates At x2,y2 x += len; xt = x; yt = y; m_trans_dir.Transform(ref xt, ref yt); int x2 = Basics.Round(xt * subpixel_scale); int y2 = Basics.Round(yt * subpixel_scale); // Calculate Scale by X At x2,y2 dx = xt + delta; dy = yt; m_trans_inv.Transform(ref dx, ref dy); dx -= x; dy -= y; int sx2 = (int)Basics.UnsignedRound(subpixel_scale / Math.Sqrt(dx * dx + dy * dy)) >> subpixel_shift; // Calculate Scale by Y At x2,y2 dx = xt; dy = yt + delta; m_trans_inv.Transform(ref dx, ref dy); dx -= x; dy -= y; int sy2 = (int)Basics.UnsignedRound(subpixel_scale / Math.Sqrt(dx * dx + dy * dy)) >> subpixel_shift; // Initialize the interpolators m_coord_x = new Dda2LineInterpolator(x1, x2, (int)len); m_coord_y = new Dda2LineInterpolator(y1, y2, (int)len); m_scale_x = new Dda2LineInterpolator(sx1, sx2, (int)len); m_scale_y = new Dda2LineInterpolator(sy1, sy2, (int)len); }
//---------------------------------------------------------------- public void ReSynchronize(double xe, double ye, uint len) { // Assume x1,y1 are equal to the ones At the previous End point int x1 = m_coord_x.y(); int y1 = m_coord_y.y(); int sx1 = m_scale_x.y(); int sy1 = m_scale_y.y(); // Calculate transformed Coordinates At x2,y2 double xt = xe; double yt = ye; m_trans_dir.Transform(ref xt, ref yt); int x2 = Basics.Round(xt * subpixel_scale); int y2 = Basics.Round(yt * subpixel_scale); double delta = 1 / (double)subpixel_scale; double dx; double dy; // Calculate Scale by X At x2,y2 dx = xt + delta; dy = yt; m_trans_inv.Transform(ref dx, ref dy); dx -= xe; dy -= ye; int sx2 = (int)Basics.UnsignedRound(subpixel_scale / Math.Sqrt(dx * dx + dy * dy)) >> subpixel_shift; // Calculate Scale by Y At x2,y2 dx = xt; dy = yt + delta; m_trans_inv.Transform(ref dx, ref dy); dx -= xe; dy -= ye; int sy2 = (int)Basics.UnsignedRound(subpixel_scale / Math.Sqrt(dx * dx + dy * dy)) >> subpixel_shift; // Initialize the interpolators m_coord_x = new Dda2LineInterpolator(x1, x2, (int)len); m_coord_y = new Dda2LineInterpolator(y1, y2, (int)len); m_scale_x = new Dda2LineInterpolator(sx1, sx2, (int)len); m_scale_y = new Dda2LineInterpolator(sy1, sy2, (int)len); }
//-------------------------------------------------------------------- public LineBresenhamInterpolator(int x1, int y1, int x2, int y2) { m_x1_lr = (line_lr(x1)); m_y1_lr = (line_lr(y1)); m_x2_lr = (line_lr(x2)); m_y2_lr = (line_lr(y2)); m_ver = (Math.Abs(m_x2_lr - m_x1_lr) < Math.Abs(m_y2_lr - m_y1_lr)); if (m_ver) { m_len = (uint)Math.Abs(m_y2_lr - m_y1_lr); } else { m_len = (uint)Math.Abs(m_x2_lr - m_x1_lr); } m_inc = (m_ver ? ((y2 > y1) ? 1 : -1) : ((x2 > x1) ? 1 : -1)); m_interpolator = new Dda2LineInterpolator(m_ver ? x1 : y1, m_ver ? x2 : y2, (int)m_len); }
//---------------------------------------------------------------- public void ReSynchronize(double xe, double ye, uint len) { // Assume x1,y1 are equal to the ones At the previous End point int x1 = m_coord_x.y(); int y1 = m_coord_y.y(); int sx1 = m_scale_x.y(); int sy1 = m_scale_y.y(); // Calculate transformed Coordinates At x2,y2 double xt = xe; double yt = ye; m_trans_dir.Transform(ref xt, ref yt); int x2 = Basics.Round(xt * subpixel_scale); int y2 = Basics.Round(yt * subpixel_scale); double delta = 1 / (double)subpixel_scale; double dx; double dy; // Calculate Scale by X At x2,y2 dx = xt + delta; dy = yt; m_trans_inv.Transform(ref dx, ref dy); dx -= xe; dy -= ye; int sx2 = (int)Basics.UnsignedRound(subpixel_scale / Math.Sqrt(dx * dx + dy * dy)) >> subpixel_shift; // Calculate Scale by Y At x2,y2 dx = xt; dy = yt + delta; m_trans_inv.Transform(ref dx, ref dy); dx -= xe; dy -= ye; int sy2 = (int)Basics.UnsignedRound(subpixel_scale / Math.Sqrt(dx * dx + dy * dy)) >> subpixel_shift; // Initialize the interpolators m_coord_x = new Dda2LineInterpolator(x1, x2, (int)len); m_coord_y = new Dda2LineInterpolator(y1, y2, (int)len); m_scale_x = new Dda2LineInterpolator(sx1, sx2, (int)len); m_scale_y = new Dda2LineInterpolator(sy1, sy2, (int)len); }
//---------------------------------------------------------------- public void Begin(double x, double y, uint len) { // Calculate transformed Coordinates At x1,y1 double xt = x; double yt = y; m_trans_dir.Transform(ref xt, ref yt); int x1 = Basics.Round(xt * subpixel_scale); int y1 = Basics.Round(yt * subpixel_scale); double dx; double dy; double delta = 1 / (double)subpixel_scale; // Calculate Scale by X At x1,y1 dx = xt + delta; dy = yt; m_trans_inv.Transform(ref dx, ref dy); dx -= x; dy -= y; int sx1 = (int)Basics.UnsignedRound(subpixel_scale / Math.Sqrt(dx * dx + dy * dy)) >> subpixel_shift; // Calculate Scale by Y At x1,y1 dx = xt; dy = yt + delta; m_trans_inv.Transform(ref dx, ref dy); dx -= x; dy -= y; int sy1 = (int)Basics.UnsignedRound(subpixel_scale / Math.Sqrt(dx * dx + dy * dy)) >> subpixel_shift; // Calculate transformed Coordinates At x2,y2 x += len; xt = x; yt = y; m_trans_dir.Transform(ref xt, ref yt); int x2 = Basics.Round(xt * subpixel_scale); int y2 = Basics.Round(yt * subpixel_scale); // Calculate Scale by X At x2,y2 dx = xt + delta; dy = yt; m_trans_inv.Transform(ref dx, ref dy); dx -= x; dy -= y; int sx2 = (int)Basics.UnsignedRound(subpixel_scale / Math.Sqrt(dx * dx + dy * dy)) >> subpixel_shift; // Calculate Scale by Y At x2,y2 dx = xt; dy = yt + delta; m_trans_inv.Transform(ref dx, ref dy); dx -= x; dy -= y; int sy2 = (int)Basics.UnsignedRound(subpixel_scale / Math.Sqrt(dx * dx + dy * dy)) >> subpixel_shift; // Initialize the interpolators m_coord_x = new Dda2LineInterpolator(x1, x2, (int)len); m_coord_y = new Dda2LineInterpolator(y1, y2, (int)len); m_scale_x = new Dda2LineInterpolator(sx1, sx2, (int)len); m_scale_y = new Dda2LineInterpolator(sy1, sy2, (int)len); }
//-------------------------------------------------------------------- public LineBresenhamInterpolator(int x1, int y1, int x2, int y2) { m_x1_lr=(line_lr(x1)); m_y1_lr=(line_lr(y1)); m_x2_lr=(line_lr(x2)); m_y2_lr=(line_lr(y2)); m_ver=(Math.Abs(m_x2_lr - m_x1_lr) < Math.Abs(m_y2_lr - m_y1_lr)); if (m_ver) { m_len = (uint)Math.Abs(m_y2_lr - m_y1_lr); } else { m_len = (uint)Math.Abs(m_x2_lr - m_x1_lr); } m_inc=(m_ver ? ((y2 > y1) ? 1 : -1) : ((x2 > x1) ? 1 : -1)); m_interpolator= new Dda2LineInterpolator(m_ver ? x1 : y1, m_ver ? x2 : y2, (int)m_len); }