--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/horori/eraline/src/eraline.cpp	Mon May 24 21:32:58 2021 +0900
@@ -0,0 +1,172 @@
+/* eraline.cpp
+ *  Last Change: 2021-02-10 水 12:00:54.
+ *                            by T.Mutoh
+ *
+ *  > eraline y h in.tif out.tif
+ *  > eraline -v x h in.tif out.tif
+ */
+#include "wx/wxprec.h"
+
+#include <wx/wx.h>
+#include <wx/app.h>
+#include <wx/cmdline.h>
+
+wxString inimg;	
+wxString outimg;	
+
+static const wxCmdLineEntryDesc cmdLineDesc[] = {
+	{wxCMD_LINE_SWITCH, "h", "help", "show this help message", wxCMD_LINE_VAL_NONE, wxCMD_LINE_OPTION_HELP},
+	{wxCMD_LINE_SWITCH, "d", "dummy", "a dummy switch", wxCMD_LINE_VAL_NONE, 0},
+	{wxCMD_LINE_SWITCH, "v", "vertical", "a secret switch", wxCMD_LINE_VAL_NONE, wxCMD_LINE_HIDDEN},
+	// ... your other command line options here...
+
+	wxCMD_LINE_DESC_END
+};
+
+void erase(int y, int h) {
+    wxImage img(inimg, wxBITMAP_TYPE_TIFF);
+
+	int r, g, b;
+	int th = 38;
+	int p = 0;
+	/*
+	for (int x = 0; x < img.GetWidth(); x++) {
+		r = (int)img.GetRed(x, y);
+		g = (int)img.GetGreen(x, y);
+		b = (int)img.GetBlue(x, y);
+		//wxString buf = wxString::Format("%d %d %d -> ", r, g, b);
+		//wxPrintf(buf);
+
+		r += (int)img.GetRed(x, y - 1);
+		g += (int)img.GetGreen(x, y - 1);
+		b += (int)img.GetBlue(x, y - 1);
+
+		r += (int)img.GetRed(x, y + 1);
+		g += (int)img.GetGreen(x, y + 1);
+		b += (int)img.GetBlue(x, y + 1);
+
+		r /= 3;
+		g /= 3;
+		b /= 3;
+		img.SetRGB(x, y, (unsigned char)r, (unsigned char)g, (unsigned char)b);
+
+		//buf = wxString::Format("%d %d %d\n", r, g, b);
+		//wxPrintf(buf);
+	}
+	*/
+	/*
+	switch (h) {
+		case 1:
+			break;
+
+		case 2:
+			break;
+
+		case 3:
+			break;
+
+		case 4:
+			for (int x = 0; x < img.GetWidth(); x++) {
+				r = (int)img.GetRed(x, y - 1);
+				g = (int)img.GetGreen(x, y - 1);
+				b = (int)img.GetBlue(x, y - 1);
+				if (r > th && g > th && b > th - 1) p++;
+
+				for (int d = 0; d < 4; d++) {
+					r = (int)img.GetRed(x, y + d);
+					g = (int)img.GetGreen(x, y + d);
+					b = (int)img.GetBlue(x, y + d);
+					if (r < th && g < th && b < th - 1) p++;
+				}
+
+				r = (int)img.GetRed(x, y + 4);
+				g = (int)img.GetGreen(x, y + 4);
+				b = (int)img.GetBlue(x, y + 4);
+				if (r > th && g > th && b > th - 4) p++;
+
+				if (p == 6) {
+					for (int d = 0; d < 4; d++)
+						img.SetRGB(x, y + d, 0, 0, 0);
+				}
+			}
+			break;
+
+		default:
+			break;
+	}
+	*/
+	for (int x = 0; x < img.GetWidth(); x++) {
+		bool bt, bb;
+		r = (int)img.GetRed(x, y - 1);
+		g = (int)img.GetGreen(x, y - 1);
+		b = (int)img.GetBlue(x, y - 1);
+		if (r > th && g > th && b > th - 1) bt = true;
+
+		r = (int)img.GetRed(x, y + h);
+		g = (int)img.GetGreen(x, y + h);
+		b = (int)img.GetBlue(x, y + h);
+		if (r > th && g > th && b > th - 1) bb = true;
+
+		if (bt && bb) {
+			for (int d = 0; d < h; d++)
+				img.SetRGB(x, y + d, 0, 0, 0);
+		}
+	}
+
+	img.SetOption(wxIMAGE_OPTION_TIFF_COMPRESSION, 5);
+	img.SetOption(wxIMAGE_OPTION_TIFF_BITSPERSAMPLE, 1);
+    img.SaveFile(outimg);
+}
+
+int main(int argc, char **argv) {
+	wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "program");
+
+	wxInitializer initializer;
+	if (!initializer) {
+		fprintf(stderr, "Failed to initialize the wxWidgets library, aborting.");
+		return -1;
+	}
+
+	wxCmdLineParser parser(cmdLineDesc, argc, argv);
+
+    wxImage::AddHandler(new wxTIFFHandler);
+
+	/*
+	switch (parser.Parse()) {
+		case -1:
+			// help was given, terminating
+			wxPuts("help");
+			break;
+
+		case 0:
+			// everything is ok; proceed
+			if (parser.Found("d")) {
+				wxPrintf("Dummy switch was given...\n");
+			}
+			if (parser.Found("v")) {
+				wxPrintf("Vertical switch was given... %s\n", argv[0]);
+				int t = wxAtoi(argv[2]);
+				int d = wxAtoi(argv[3]);
+				inimg = argv[4];	
+				outimg = argv[5];	
+				//v1(t);
+			}
+			break;
+
+		default:
+			wxPrintf("??? switch was given... \n");
+			break;
+	}
+	*/
+
+	int y = wxAtoi(argv[1]);
+	int h = wxAtoi(argv[2]);
+	inimg = argv[3];	
+	outimg = argv[4];	
+
+	erase(y, h);
+
+	return 0;
+}
+
+