/// <summary>
/// Deal with 1-width line operation
/// </summary>
/// <param name="iline"></param>
/// <param name="w"></param>
/// <param name="h"></param>
/// <param name="matrix"></param>
public static void Deal_With_ILines(iLine iline, int w, int h, byte[,] matrix)
{
int i = 0;
foreach (oneWidthLine oline in iline.OneLineSet)
{
for (i = oline.dStart; i <= oline.dEnd; i++)
{
matrix[oline.sPos, i] = 0;
}
}
byte up = 0, down = 0;
bool fup = false, fdo = false;
foreach (oneWidthLine oline in iline.OneLineSet)
{
fup = false;
fdo = false;
if (oline.dStart - 1 >= 0)
{
up = matrix[oline.sPos, oline.dStart - 1];
if (up == 1)
{
fup = true;
}
}
if (oline.dEnd + 1 < h)
{
down = matrix[oline.sPos, oline.dEnd + 1];
if (down == 1)
{
fdo = true;
}
}
if (fup || fdo)
{
for (i = oline.dStart; i <= oline.dEnd; i++)
{
matrix[oline.sPos, i] = 1;
}
}
}
}
/// <summary>
/// Find long and connected black lines.
/// right - left : (width - 1, 0, -1, source)
/// left - right : (0, width - 1, 1, source)
/// </summary>
/// <param name="start"></param>
/// <param name="end"></param>
/// <param name="inc"></param>
/// <param name="w"></param>
/// <param name="h"></param>
/// <param name="matrix"></param>
/// <returns></returns>
public static iLine Find_Long_Connected_Lines(int start, int end, int inc, int w, int h, byte[,] matrix)
{
int trend = 0;
int i = 0, j = 0;
int pre_hs = -1, pre_he = -1;
int las_hs = -1, las_he = -1;
int s = -1, hs = -1, he = -1;
iLine iline = new iLine();
for (i = start; i != end && hs == -1 && he == -1; i += inc)
{
for (j = 0; j <= h - 1; j++)
{
if (matrix[i, j] == 1)
{
if (s == -1) { s = i; }
if (hs == -1) { hs = j; }
}
else
{
if (hs != -1 && he == -1) { he = j - 1; break; }
}
}
}
pre_hs = las_hs = hs;
pre_he = las_he = he;
iline.Add(true, s, hs, he);
hs = he = -1;
Find_Vertical_Black_Line_Segment(s + inc, ref hs, ref he, trend, las_hs, las_he, w, h, matrix);
las_hs = hs;
las_he = he;
trend = (las_hs + (las_he - las_hs) / 2) - (pre_hs + (pre_he - pre_hs) / 2);
iline.Add(true, s + inc, hs, he);
hs = he = -1;
for (i = s + 2 * inc; i != end; i += inc)
{
Find_Vertical_Black_Line_Segment(i, ref hs, ref he, trend, las_hs, las_he, w, h, matrix);
if (hs == -1 && he == -1)
{
break;
}
pre_hs = las_hs;
pre_he = las_he;
las_hs = hs;
las_he = he;
hs = -1;
he = -1;
trend = (las_hs + (las_he - las_hs) / 2) - (pre_hs + (pre_he - pre_hs) / 2);
iline.Add(true, i, las_hs, las_he);
}
Deal_With_ILines(iline, w, h, matrix);
return iline;
}
/// <summary>
/// Find long and connected black lines.
/// right - left : (width - 1, 0, -1, source)
/// left - right : (0, width - 1, 1, source)
/// </summary>
/// <param name="start"></param>
/// <param name="end"></param>
/// <param name="inc"></param>
/// <param name="source"></param>
/// <returns></returns>
public static iLine Find_Long_Connected_Lines(int start, int end, int inc, Bitmap source)
{
// The line ascend or descend trend
// which equals to left - right
// == 0 level
// > 0 ascend
// < 0 descend
int trend = 0;
int i = 0, j = 0;
int pre_hs = -1, pre_he = -1;
int las_hs = -1, las_he = -1;
int s = -1, hs = -1, he = -1;
iLine iline = new iLine();
try
{
// From right to left, to find the start position
// Find the first vertical black line, from right to left or in the reverse direction.
for (i = start; i != end && hs == -1 && he == -1; i += inc)
{
for (j = 0; j <= source.Height - 1; j++)
{
Color tmp = source.GetPixel(i, j);
if (tmp.R + tmp.G + tmp.B == 0)
{
// if this vertical single line is the rightmost single black line
if (s == -1) { s = i; }
// if this point is the topest point of this single black line
if (hs == -1) { hs = j; }
}
else
{
// if this point is the bottomest point of this single black line
if (hs != -1 && he == -1) { he = j - 1; break; }
}
}
}
pre_hs = las_hs = hs;
pre_he = las_he = he;
iline.Add(true, s, hs, he);
hs = he = -1;
Operations.Find_Vertical_Black_Line_Segment(s + inc, ref hs, ref he, trend, las_hs, las_he, source);
las_hs = hs;
las_he = he;
trend = (las_hs + (las_he - las_hs) / 2) - (pre_hs + (pre_he - pre_hs) / 2);
iline.Add(true, s + inc, hs, he);
hs = he = -1;
for (i = s + 2 * inc; i != end; i += inc)
{
Operations.Find_Vertical_Black_Line_Segment(i, ref hs, ref he, trend, las_hs, las_he, source);
if (hs == -1 && he == -1)
{
break;
}
pre_hs = las_hs;
pre_he = las_he;
las_hs = hs;
las_he = he;
hs = -1;
he = -1;
trend = (las_hs + (las_he - las_hs) / 2) - (pre_hs + (pre_he - pre_hs) / 2);
iline.Add(true, i, las_hs, las_he);
}
Deal_With_ILines(iline, source);
return iline;
}
catch (Exception e)
{
throw new Exception("Find_Long_Connected_Lines:" + e.Message);
}
}
public iLine(iLine _ll)
{
iniParameter(_ll.Left_Top, _ll.Right_Bottom, _ll.OneLineSet);
}
/// <summary>
/// Deal with 1-width line operation
/// </summary>
/// <param name="iline"></param>
/// <param name="source"></param>
public static void Deal_With_ILines(iLine iline, Bitmap source)
{
int i = 0;
#if Paint_Green
#if Remove_Green_part
Color green = Color.FromArgb(255, 255, 255);
#else
Color green = Color.FromArgb(0, 255, 0);
#endif
foreach (oneWidthLine oline in iline.OneLineSet)
{
for (i = oline.dStart; i <= oline.dEnd; i++)
{
source.SetPixel(oline.sPos, i, green);
}
}
#endif
#if Paint_Yellow
#if Paint_Yellow_To_Black
Color yellow = Color.FromArgb(0, 0, 0);
#else
Color yellow = Color.FromArgb(255, 255, 0);
#endif
Color up = new Color();
Color down = new Color();
bool fup = false;
bool fdo = false;
try
{
foreach (oneWidthLine oline in iline.OneLineSet)
{
fup = false;
fdo = false;
if (oline.dStart - 1 >= 0)
{
up = source.GetPixel(oline.sPos, oline.dStart - 1);
if (up.R + up.G + up.B == 0)
{
fup = true;
}
}
if (oline.dEnd + 1 < source.Height)
{
down = source.GetPixel(oline.sPos, oline.dEnd + 1);
if (down.R + down.G + down.B == 0)
{
fdo = true;
}
}
if (fup || fdo)
{
for (i = oline.dStart; i <= oline.dEnd; i++)
{
source.SetPixel(oline.sPos, i, yellow);
}
}
}
#endif
}
catch (Exception e)
{
throw new Exception("Deal_With_ILines:" + e.Message);
}
}
