TICK with negative numbers should 'start from the top of the graph' looking down...

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.3@1725 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/program/src/rrd_graph.c b/program/src/rrd_graph.c
index c4e8bf0df748913dc2711313168089711e23635c..63a4b2e1dad9639a9901f71f3283c2abd132c0e1 100644 (file)
--- a/program/src/rrd_graph.c
+++ b/program/src/rrd_graph.c
@@ -3189,7 +3189,7 @@ int graph_paint(
                     if (im->gdes[i].yrule > 0) {
                         gfx_line(im,
                                  im->xorigin + ii,
-                                 im->yorigin,
+                                 im->yorigin + 1.0,
                                  im->xorigin + ii,
                                  im->yorigin -
                                  im->gdes[i].yrule *
@@ -3197,11 +3197,11 @@ int graph_paint(
                     } else if (im->gdes[i].yrule < 0) {
                         gfx_line(im,
                                  im->xorigin + ii,
-                                 im->yorigin - im->ysize,
+                                 im->yorigin - im->ysize - 1.0,
                                  im->xorigin + ii,
-                                 im->yorigin - (1 -
+                                 im->yorigin - im->ysize -
                                                 im->gdes[i].
-                                                yrule) *
+                                                yrule *
                                  im->ysize, 1.0, im->gdes[i].col);
                     }
                 }