Index: work/gpstroke/cap.c
===================================================================
--- work/gpstroke/cap.c	(revision 7407)
+++ work/gpstroke/cap.c	(revision 7408)
@@ -23,8 +23,11 @@
 {
 	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);
+
+	draw_pcb_fillcr(img, 50, 20, 6);
+
+	draw_pcb_line(img, 10, 10, 100, 140, 12);
+	draw_pcb_line(img, 100, 10, 10, 140, 12);
 	pnm_save(img, "img.pnm");
 	return 0;
 }
Index: work/gpstroke/pcb_draw.c
===================================================================
--- work/gpstroke/pcb_draw.c	(revision 7407)
+++ work/gpstroke/pcb_draw.c	(revision 7408)
@@ -1,3 +1,4 @@
+#include <stdlib.h>
 #include <math.h>
 #include "pcb_draw.h"
 #include "c24lib/image/image.h"
@@ -17,12 +18,13 @@
 
 	x = x1;
 	y = y1;
+	draw_pcb_fillcr(dst, x1, y1, th/2);
 	for(;;) {
 		int n;
 		double xx, yy;
 		xx = x - nx * th / 2.0;
 		yy = y - ny * th / 2.0;
-		for(n = 0; n < th; n++) {
+		for(n = 0; n <= th; n++) {
 			if ((xx >= 0) && (xx <= dst->sx) && (yy >= 0) && (yy <= dst->sy)) {
 				pixel_t *pixel = (dst->pixmap) + (int) xx + dst->sx * (int) yy;
 				*pixel = pixel_black;
@@ -39,6 +41,8 @@
 			break;
 	}
 
+	draw_pcb_fillcr(dst, x, y, th/2);
+
 	return;
 }
 
@@ -68,8 +72,51 @@
 
 	if ((x1 != x2) || (y1 != y2))
 		draw_thick_line(dst, x1, y1, x2, y2, vx, vy, nx, ny, th);
+	else
+		draw_pcb_fillcr(dst, x1, y1, th/2);
 
 //	draw_color(pixel_red);
 //	draw_line(dst, x1+nx*th/2.0, y1+ny*th, x2+nx*th, y2+ny*th/2.0);
 //	draw_line(dst, x1-nx*th/2.0, y1-ny*th, x2-nx*th, y2-ny*th/2.0);
 }
+
+int *fc_pat[1000];
+
+static void fc_pat_gen(int r)
+{
+	int y, *p;
+	p = fc_pat[r] = malloc(sizeof(int) * (r+1));
+	for(y = 0; y <= r; y++) {
+		double x = (double)r * cos(asin((double)y/(double)r));
+		p[y] = round(x);
+	}
+}
+
+void draw_pcb_fillcr(image_t *dst, int xc, int yc, int r)
+{
+	int y, x, *pa;
+	pixel_t *p;
+
+	if (fc_pat[r] == NULL)
+		fc_pat_gen(r);
+
+	pa = fc_pat[r];
+
+	for(y = -r; y <= r; y++) {
+		int x1, x2, ay;
+		if (y+yc < 0)
+			continue;
+		if (y+yc >= dst->sy)
+			break;
+		ay = y < 0 ? -y : y;
+		x1 = xc - pa[ay];
+		x2 = xc + pa[ay];
+		p = &image_pix(dst, x1, y+yc);
+		for(x = x1; x <= x2; x++,p++) {
+			*p = pixel_black;
+		}
+	}
+/*	p = &image_pix(dst, xc, yc);
+	*p = pixel_red;*/
+}
+
Index: work/gpstroke/pcb_draw.h
===================================================================
--- work/gpstroke/pcb_draw.h	(revision 7407)
+++ work/gpstroke/pcb_draw.h	(revision 7408)
@@ -2,3 +2,4 @@
 
 void draw_pcb_line(image_t *dst, int x1, int y1, int x2, int y2, double th);
 
+void draw_pcb_fillcr(image_t *dst, int xc, int yc, int r);