X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Frrd_graph.c;h=5f656aa36947b1c843eee6e76386a86a6d80f7d7;hb=3a6729d5faf3d99f9f282ebe00881c790414c14c;hp=b5410f34930520bf0710c908575920760e1121d1;hpb=5665715541d27d2c95a87fe8fc5e86522a75129a;p=rrdtool.git

diff --git a/src/rrd_graph.c b/src/rrd_graph.c
index b5410f3..5f656aa 100644
--- a/src/rrd_graph.c
+++ b/src/rrd_graph.c
@@ -2500,16 +2500,53 @@ graph_paint(image_desc_t *im, char ***calcpr)
 
           }
         } else {
-	  double ybase0 = DNAN,ytop0=DNAN;
-          for(ii=0;ii<im->xsize;ii++){
+	  int idxI=-1;
+	  double *foreY=malloc(sizeof(double)*im->xsize*2);
+	  double *foreX=malloc(sizeof(double)*im->xsize*2);
+	  double *backY=malloc(sizeof(double)*im->xsize*2);
+	  double *backX=malloc(sizeof(double)*im->xsize*2);
+	  int drawem = 0;
+          for(ii=0;ii<=im->xsize;ii++){
+	    double ybase,ytop;
+	    if ( idxI > 0 && ( drawem != 0 || ii==im->xsize)){
+               int cntI=1;
+               int lastI=0;
+               while (cntI < idxI && foreY[lastI] == foreY[cntI] && foreY[lastI] == foreY[cntI+1]){cntI++;}
+               node = gfx_new_area(im->canvas,
+                                backX[0],backY[0],
+                                foreX[0],foreY[0],
+                                foreX[cntI],foreY[cntI], im->gdes[i].col);
+               while (cntI < idxI) {
+                 lastI = cntI;
+                 cntI++;
+                 while ( cntI < idxI && foreY[lastI] == foreY[cntI] && foreY[lastI] == foreY[cntI+1]){cntI++;} 
+                 gfx_add_point(node,foreX[cntI],foreY[cntI]);
+               }
+               gfx_add_point(node,backX[idxI],backY[idxI]);
+               while (idxI > 1){
+                 lastI = idxI;
+                 idxI--;
+                 while ( idxI > 1 && backY[lastI] == backY[idxI] && backY[lastI] == backY[idxI-1]){idxI--;} 
+                 gfx_add_point(node,backX[idxI],backY[idxI]);
+               }
+               idxI=-1;
+               drawem = 0;
+            }
+            if (drawem != 0){
+              drawem = 0;
+              idxI=-1;
+            }
+            if (ii == im->xsize) break;
+            
 	    /* keep things simple for now, just draw these bars
 	       do not try to build a big and complex area */
-	    double ybase,ytop;
+
+	                                         	      
 	    if ( im->slopemode == 0 && ii==0){
 		continue;
 	    }
 	    if ( isnan(im->gdes[i].p_data[ii]) ) {
-		ybase0 = DNAN;
+		drawem = 1;
 		continue;
 	    }
             ytop = ytr(im,im->gdes[i].p_data[ii]);
@@ -2519,7 +2556,7 @@ graph_paint(image_desc_t *im, char ***calcpr)
                   ybase = ytr(im,areazero);
             }
             if ( ybase == ytop ){
-		ybase0 = DNAN;
+		drawem = 1;
 		continue;	
 	    }
 	    /* every area has to be wound clock-wise,
@@ -2529,24 +2566,22 @@ graph_paint(image_desc_t *im, char ***calcpr)
 		ytop = ybase;
 		ybase = extra;
 	    }
-	    if ( im->slopemode == 0){
-		 ybase0 = ybase;
-		 ytop0 = ytop;
-	    }
-	    if ( !isnan(ybase0) ){
-	            node = gfx_new_area(im->canvas,
-                                (double)ii-1.2+(double)im->xorigin,ybase0-0.2,
-                                (double)ii-1.2+(double)im->xorigin,ytop0+0.2,
-                                (double)ii+0.2+(double)im->xorigin,ytop+0.2,
-                                im->gdes[i].col
-                               );
-        	    gfx_add_point(node,
-			        (double)ii+0.02+im->xorigin,ybase-0.2
-                              );
+            if ( im->slopemode == 0 ){
+                    backY[++idxI] = ybase-0.2;
+                    backX[idxI] = ii+im->xorigin-1;
+                    foreY[idxI] = ytop+0.2;
+                    foreX[idxI] = ii+im->xorigin-1;
             }
-	    ybase0=ybase;
-	    ytop0=ytop;
-          }             
+            backY[++idxI] = ybase-0.2;
+            backX[idxI] = ii+im->xorigin;
+            foreY[idxI] = ytop+0.2;
+            foreX[idxI] = ii+im->xorigin;
+          }
+          /* close up any remaining area */             
+          free(foreY);
+          free(foreX);
+          free(backY);
+          free(backX);
         } /* else GF_LINE */
       } /* if color != 0x0 */
       /* make sure we do not run into trouble when stacking on NaN */