gbox_to_gml2()

static char* gbox_to_gml2 ( const GBOX *  bbox, const char *  srs, int  precision, const char *  prefix  )

static

Definition at line 75 of file lwout_gml.c.

{
        int size;
        POINT4D pt;
        POINTARRAY *pa;
        char *ptr, *output;
        size_t prefixlen = strlen(prefix);
 
        if ( ! bbox )
        {
                size = ( sizeof("<Box>/") + (prefixlen*2) ) * 2;
                if ( srs ) size += strlen(srs) + sizeof(" srsName=..");
 
                ptr = output = lwalloc(size);
 
                ptr += sprintf(ptr, "<%sBox", prefix);
 
                if ( srs ) ptr += sprintf(ptr, " srsName=\"%s\"", srs);
 
                ptr += sprintf(ptr, "/>");
 
                return output;
        }
 
        pa = ptarray_construct_empty(FLAGS_GET_Z(bbox->flags), 0, 2);
 
        pt.x = bbox->xmin;
        pt.y = bbox->ymin;
        if (FLAGS_GET_Z(bbox->flags)) pt.z = bbox->zmin;
        ptarray_append_point(pa, &pt, LW_TRUE);
 
        pt.x = bbox->xmax;
        pt.y = bbox->ymax;
        if (FLAGS_GET_Z(bbox->flags)) pt.z = bbox->zmax;
        ptarray_append_point(pa, &pt, LW_TRUE);
 
        size = pointArray_GMLsize(pa, precision);
        size += ( sizeof("<Box><coordinates>/") + (prefixlen*2) ) * 2;
        if ( srs ) size += strlen(srs) + sizeof(" srsName=..");
 
        ptr = output = lwalloc(size);
 
        if ( srs ) ptr += sprintf(ptr, "<%sBox srsName=\"%s\">", prefix, srs);
        else       ptr += sprintf(ptr, "<%sBox>", prefix);
 
        ptr += sprintf(ptr, "<%scoordinates>", prefix);
        ptr += pointArray_toGML2(pa, ptr, precision);
        ptr += sprintf(ptr, "</%scoordinates></%sBox>", prefix, prefix);
 
        ptarray_free(pa);
 
        return output;
}

References GBOX::flags, FLAGS_GET_Z, LW_TRUE, lwalloc(), pointArray_GMLsize(), pointArray_toGML2(), precision, ptarray_append_point(), ptarray_construct_empty(), ptarray_free(), POINT4D::x, GBOX::xmax, GBOX::xmin, POINT4D::y, GBOX::ymax, GBOX::ymin, POINT4D::z, GBOX::zmax, and GBOX::zmin.

Referenced by lwgeom_extent_to_gml2().

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