asx3d3_mline_coordindex_sb()

static int asx3d3_mline_coordindex_sb ( const LWMLINE *  mgeom, stringbuffer_t *  sb  )

static

if the linestring is closed, we put the start point index for the last vertex to denote use first point and don't increment the index

Definition at line 132 of file lwout_x3d.c.

{
        LWLINE *geom;
        uint32_t i, j, k, si;
        POINTARRAY *pa;
        uint32_t np;
 
        j = 0;
        for (i=0; i < mgeom->ngeoms; i++)
        {
                geom = (LWLINE *) mgeom->geoms[i];
                pa = geom->points;
                np = pa->npoints;
                si = j;  /* start index of first point of linestring */
                for (k=0; k < np ; k++)
                {
                        if (k)
                        {
                                stringbuffer_aprintf(sb, " ");
                        }
                        if (!lwline_is_closed(geom) || k < (np -1) )
                        {
                                stringbuffer_aprintf(sb, "%u", j);
                                j += 1;
                        }
                        else
                        {
                                stringbuffer_aprintf(sb,"%u", si);
                        }
                }
                if (i < (mgeom->ngeoms - 1) )
                {
                        stringbuffer_aprintf(sb, " -1 "); /* separator for each linestring */
                }
        }
        return LW_SUCCESS;
}

References LWMLINE::geoms, LW_SUCCESS, lwline_is_closed(), LWMLINE::ngeoms, POINTARRAY::npoints, LWLINE::points, and stringbuffer_aprintf().

Referenced by asx3d3_multi_sb().

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