[rrd-developers] Re: rrdtool 1.2rc3 - a bit of a problem with RRFW

[Stanislav Sinyagin]

With the new patch it enters the infinite loop. Below I've put the extraction 
of the piece of code.

Here
http://rrfwdemo.tbw.ch/rrfw/plain/rrdtest-1.2rc3.tar.gz
I put the RRD file (i386 Linux) and a shell script that creates the graph.

Here
http://rrfwdemo.tbw.ch/rrfw/plain/r12rc3.png
is the graph produced by 1.2rc3

Here's the same data graphed with 2004-07-26 development snapshot:
http://rrfwdemo.tbw.ch/rrfw/plain/2004-07-26.png

The patched code follows

        case GFX_LINE:
        case GFX_AREA: {   
            ArtVpath *vec,*pvec;
            double dst[6];     
            ArtSVP *svp,*svpt;
            art_affine_scale(dst,canvas->zoom,canvas->zoom);
            vec = art_vpath_affine_transform(node->path,dst);
            if (node->closed_path)
                gfx_libart_close_path(node, &vec);
            gfx_round_scaled_coordinates(vec);
            pvec = art_vpath_perturb(vec);
            art_free(vec);
            if(node->type == GFX_LINE){
                svp = art_svp_vpath_stroke ( pvec, ART_PATH_STROKE_JOIN_ROUND,
                                             ART_PATH_STROKE_CAP_ROUND,
                                             node->size*canvas->zoom,4,0.25);
            } else {
                svp  = art_svp_from_vpath ( pvec );
                svpt = art_svp_uncross( svp );
                art_free(svp);
               svp  = art_svp_rewind_uncrossed(svpt,ART_WIND_RULE_ODDEVEN);
            }
            art_free(pvec);
            art_free(svpt);
            art_rgb_svp_alpha (svp ,0,0, pys_width, pys_height,
                               node->color, buffer, rowstride, NULL);
            art_free(svp);
            break;
        }


Stan



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