make the areas that makeup the graphs a little larger, so that they overlap a bit

and do not exhibit white lines when touching each other.

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2@546 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/program/src/rrd_graph.c b/program/src/rrd_graph.c
index 8162bbfc79f74bf5866f385a17a262004be0273c..3a39ae240c804e12665f2f33b8154aff1bf1a073 100644 (file)
--- a/program/src/rrd_graph.c
+++ b/program/src/rrd_graph.c
@@ -2506,11 +2506,11 @@ graph_paint(image_desc_t *im, char ***calcpr)
 
           }
         } else {
-         float ybase0 = DNAN,ytop0=DNAN;
+         double ybase0 = DNAN,ytop0=DNAN;
           for(ii=0;ii<im->xsize;ii++){
            /* keep things simple for now, just draw these bars
               do not try to build a big and complex area */
-           float ybase,ytop;
+           double ybase,ytop;
            if ( im->slopemode == 0 && ii==0){
                continue;
            }
@@ -2531,7 +2531,7 @@ graph_paint(image_desc_t *im, char ***calcpr)
            /* every area has to be wound clock-wise,
               so we have to make sur base remains base  */             
            if (ybase > ytop){
-               float extra = ytop;
+               double extra = ytop;
                ytop = ybase;
                ybase = extra;
            }
@@ -2541,13 +2541,13 @@ graph_paint(image_desc_t *im, char ***calcpr)
            }
            if ( !isnan(ybase0) ){
                    node = gfx_new_area(im->canvas,
-                                ii-1+im->xorigin,ybase0,
-                                ii-1+im->xorigin,ytop0,
-                                ii+im->xorigin,ytop,                           
+                                (double)ii-1.1+(double)im->xorigin,ybase0-0.1,
+                                (double)ii-1.1+(double)im->xorigin,ytop0+0.1,
+                                (double)ii+0.1+(double)im->xorigin,ytop+0.1,
                                 im->gdes[i].col
                                );
                    gfx_add_point(node,
-                               ii+im->xorigin,ybase
+                               (double)ii+0.01+im->xorigin,ybase-0.1
                               );
             }
            ybase0=ybase;