asx3d3_psurface_buf()

static size_t asx3d3_psurface_buf ( const LWPSURFACE *  psur, char *  srs, char *  output, int  precision, int  opts, const char *  defid  )

static

Definition at line 552 of file lwout_x3d.c.

References asx3d3_poly_buf(), LWPSURFACE::geoms, LW_X3D_FLIP_XY, LWPSURFACE::ngeoms, POINTARRAY::npoints, LWPOLY::rings, and X3D_USE_GEOCOORDS.

Referenced by asx3d3_collection_buf(), and asx3d3_psurface().

{
        char *ptr;
        int i;
        int j;
        int k;
        int np;
        LWPOLY *patch;

        ptr = output;

        /* Open outmost tag */
        ptr += sprintf(ptr, "<IndexedFaceSet convex='false' %s coordIndex='",defid);

        j = 0;
        for (i=0; i<psur->ngeoms; i++)
        {
                patch = (LWPOLY *) psur->geoms[i];
                np = patch->rings[0]->npoints - 1;
                for (k=0; k < np ; k++)
                {
                        if (k)
                        {
                                ptr += sprintf(ptr, " ");
                        }
                        ptr += sprintf(ptr, "%d", (j + k));
                }
                if (i < (psur->ngeoms - 1) )
                {
                        ptr += sprintf(ptr, " -1 "); /* separator for each subgeom */
                }
                j += k;
        }

        if ( X3D_USE_GEOCOORDS(opts) )
                ptr += sprintf(ptr, "'><GeoCoordinate geoSystem='\"GD\" \"WE\" \"%s\"' point='", ( (opts & LW_X3D_FLIP_XY) ? "latitude_first" : "longitude_first") );
        else ptr += sprintf(ptr, "'><Coordinate point='");

        for (i=0; i<psur->ngeoms; i++)
        {
                ptr += asx3d3_poly_buf(psur->geoms[i], 0, ptr, precision, opts, 1, defid);
                if (i < (psur->ngeoms - 1) )
                {
                        ptr += sprintf(ptr, " "); /* only add a trailing space if its not the last polygon in the set */
                }
        }

        /* Close outmost tag */
        ptr += sprintf(ptr, "' /></IndexedFaceSet>");

        return (ptr-output);
}

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