Index: work/gpstroke/Makefile
===================================================================
--- work/gpstroke/Makefile	(revision 7404)
+++ work/gpstroke/Makefile	(revision 7405)
@@ -2,8 +2,10 @@
 LDFLAGS = -lm
 LIBS=pcb_draw.o gp.o c24lib/image/draw.o c24lib/image/image.o c24lib/image/pnm.o
 
-all: find_polyl find_line_indep
+all: find_polyl find_line_indep cap
 
+cap: cap.o $(LIBS)
+
 find_polyl: find_polyl.o $(LIBS)
 
 find_line_indep: find_line_indep.o $(LIBS)
Index: work/gpstroke/cap.c
===================================================================
--- work/gpstroke/cap.c	(nonexistent)
+++ work/gpstroke/cap.c	(revision 7405)
@@ -0,0 +1,30 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <math.h>
+#include <string.h>
+#include <time.h>
+#include "c24lib/image/image.h"
+#include "c24lib/image/draw.h"
+#include "c24lib/image/pnm.h"
+
+#include "pcb_draw.h"
+
+static inline void pcb_clear(image_t *img)
+{
+	int n;
+	pixel_t *p = img->pixmap;
+	for(n = 0; n < img->sx * img->sy; n++,p++) {
+		*p = pixel_white;
+	}
+}
+
+
+int main(int argc, char *argv[])
+{
+	image_t *img = image_new(200, 200);
+	pcb_clear(img);
+	draw_pcb_line(img, 10, 10, 100, 140, 8);
+	draw_pcb_line(img, 100, 10, 10, 140, 8);
+	pnm_save(img, "img.pnm");
+	return 0;
+}