Stuff

git-svn-id: svn://cook.msm.cam.ac.uk:745/diff-tomo/dtr@70 bf6ca9ba-c028-0410-8290-897cf20841d1

1 files changed, 30 insertions, 0 deletions

diff --git a/src/imagedisplay.c b/src/imagedisplay.c
index 6ca646c..9c7aee5 100644
--- a/src/imagedisplay.c
+++ b/src/imagedisplay.c
@@ -244,3 +244,33 @@ void imagedisplay_mark_point(ImageDisplay *imagedisplay, unsigned int x, unsigne
 
 }
 
+void imagedisplay_mark_circle(ImageDisplay *imagedisplay, unsigned int x, unsigned int y) {
+
+	guchar *image_eightbit;
+	int xd, yd;
+	int w, h;
+
+	if ( !imagedisplay->pixbuf ) return;
+	
+	w = imagedisplay->width;
+	h = imagedisplay->height;
+
+	g_object_get(G_OBJECT(imagedisplay->pixbuf), "pixels", &image_eightbit, NULL);
+	
+	if ( (y >= 0) && (y < h) ) {
+		for ( xd=biggest(x-3, 0); xd<=smallest(x+3, w-1); xd++ ) {
+			imagedisplay->data[3*( xd+w*(h-1-y) )] = 0;
+			imagedisplay->data[3*( xd+w*(h-1-y) )+1] = 255;
+			imagedisplay->data[3*( xd+w*(h-1-y) )+2] = 0;
+		}
+	}
+	if ( (x >= 0) && (x < w) ) {
+		for ( yd=biggest(y-3, 0); yd<=smallest(y+3, h-1); yd++ ) {
+			imagedisplay->data[3*( x+w*(h-1-yd) )] = 0;
+			imagedisplay->data[3*( x+w*(h-1-yd) )+1] = 255;
+			imagedisplay->data[3*( x+w*(h-1-yd) )+2] = 0;
+		}
+	}
+
+}
+