C++ (Cpp) lwline_clone示例

示例#1

文件： lwgeom.c 项目： abuhamid/bd_geonode

/* @brief Clone LWGEOM object. Serialized point lists are not copied.
 *
 * @see ptarray_clone 
 */
LWGEOM *
lwgeom_clone(const LWGEOM *lwgeom)
{
	LWDEBUGF(2, "lwgeom_clone called with %p, %s",
	         lwgeom, lwtype_name(lwgeom->type));

	switch (lwgeom->type)
	{
	case POINTTYPE:
		return (LWGEOM *)lwpoint_clone((LWPOINT *)lwgeom);
	case LINETYPE:
		return (LWGEOM *)lwline_clone((LWLINE *)lwgeom);
	case CIRCSTRINGTYPE:
		return (LWGEOM *)lwcircstring_clone((LWCIRCSTRING *)lwgeom);
	case POLYGONTYPE:
		return (LWGEOM *)lwpoly_clone((LWPOLY *)lwgeom);
	case TRIANGLETYPE:
		return (LWGEOM *)lwtriangle_clone((LWTRIANGLE *)lwgeom);
	case COMPOUNDTYPE:
	case CURVEPOLYTYPE:
	case MULTICURVETYPE:
	case MULTISURFACETYPE:
	case MULTIPOINTTYPE:
	case MULTILINETYPE:
	case MULTIPOLYGONTYPE:
	case POLYHEDRALSURFACETYPE:
	case TINTYPE:
	case COLLECTIONTYPE:
		return (LWGEOM *)lwcollection_clone((LWCOLLECTION *)lwgeom);
	default:
		lwerror("lwgeom_clone: Unknown geometry type: %s", lwtype_name(lwgeom->type));
		return NULL;
	}
}

示例#2

文件： lwstroke.c 项目： nextgis-borsch/postgis

LWGEOM *
lwline_unstroke(const LWLINE *line)
{
	LWDEBUG(2, "lwline_unstroke called.");

	if ( line->points->npoints < 4 ) return lwline_as_lwgeom(lwline_clone(line));
	else return pta_unstroke(line->points, line->flags, line->srid);
}

示例#3

文件： lwgeom_geos_split.c 项目： abuhamid/bd_geonode

static LWGEOM*
lwline_split_by_point(const LWLINE* lwline_in, const LWPOINT* blade_in)
{
	LWMLINE* out;

	out = lwmline_construct_empty(lwline_in->srid,
		FLAGS_GET_Z(lwline_in->flags),
		FLAGS_GET_M(lwline_in->flags));
	if ( lwline_split_by_point_to(lwline_in, blade_in, out) < 2 )
	{
		lwmline_add_lwline(out, lwline_clone(lwline_in));
	}

	/* Turn multiline into collection */
	out->type = COLLECTIONTYPE;

	return (LWGEOM*)out;
}

示例#4

文件： effectivearea.c 项目： NianYue/pipelinedb

static LWLINE* lwline_set_effective_area(const LWLINE *iline,int set_area, double trshld)
{
	LWDEBUG(2, "Entered  lwline_set_effective_area");
	int set_m;
	if(set_area)
		set_m=1;
	else
		set_m=FLAGS_GET_M(iline->flags);
	
	LWLINE *oline = lwline_construct_empty(iline->srid, FLAGS_GET_Z(iline->flags), set_m);

	/* Skip empty case */
	if( lwline_is_empty(iline) )
		return lwline_clone(iline);
			
	oline = lwline_construct(iline->srid, NULL, ptarray_set_effective_area(iline->points,2,set_area,trshld));
		
	oline->type = iline->type;
	return oline;
	
}

示例#5

文件： lwcircstring.c 项目： abuhamid/bd_geonode

/* @brief Clone LWCIRCSTRING object. Serialized point lists are not copied.
 *
 * @see ptarray_clone 
 */
LWCIRCSTRING *
lwcircstring_clone(const LWCIRCSTRING *g)
{
	return (LWCIRCSTRING *)lwline_clone((LWLINE *)g);
}

示例#6

文件： lwtriangle.c 项目： gbroccolo/postgis

/* @brief Clone LWTRIANGLE object. Serialized point lists are not copied.
 *
 * @see ptarray_clone 
 */
LWTRIANGLE *
lwtriangle_clone(const LWTRIANGLE *g)
{
	LWDEBUGF(2, "lwtriangle_clone called with %p", g);
	return (LWTRIANGLE *)lwline_clone((const LWLINE *)g);
}