def __init__(self, north=0, south=0, east=0, west=0, top=0, bottom=0):
self.c_bbox = ctypes.pointer(libvect.bound_box())
self.north = north
self.south = south
self.east = east
self.west = west
self.top = top
self.bottom = bottom
def __init__(self, north=0, south=0, east=0, west=0, top=0, bottom=0):
self.c_bbox = ctypes.pointer(libvect.bound_box())
self.north = north
self.south = south
self.east = east
self.west = west
self.top = top
self.bottom = bottom
def setUp(self):
"""Create bbox object"""
self.c_bbox = ctypes.pointer(libvect.bound_box())
# x range
self.c_bbox.contents.E = 220
self.c_bbox.contents.W = 215
# y range
self.c_bbox.contents.N = 135
self.c_bbox.contents.S = 125
# z range
self.c_bbox.contents.T = 340
self.c_bbox.contents.B = 330
def setUp(self):
"""Create bbox object"""
self.c_bbox = ctypes.pointer(libvect.bound_box())
# x range
self.c_bbox.contents.E = 220
self.c_bbox.contents.W = 215
# y range
self.c_bbox.contents.N = 135
self.c_bbox.contents.S = 125
# z range
self.c_bbox.contents.T = 340
self.c_bbox.contents.B = 330
def GetNearestNodeCat(e, n, layer, tresh, vectMap):
if not haveCtypes:
return -2
vectMapName, mapSet = ParseMapStr(vectMap)
openedMap = pointer(vectlib.Map_info())
ret = vectlib.Vect_open_old(openedMap,
c_char_p(encode(vectMapName)),
c_char_p(encode(mapSet)))
if ret == 1:
vectlib.Vect_close(openedMap)
if ret != 2:
return -1
nodeNum = vectlib.Vect_find_node(openedMap,
c_double(e),
c_double(n),
c_double(0),
c_double(tresh),
vectlib.WITHOUT_Z)
if nodeNum > 0:
e = c_double(0)
n = c_double(0)
vectlib.Vect_get_node_coor(openedMap,
nodeNum,
byref(e),
byref(n),
None) # z
e = e.value
n = n.value
else:
vectlib.Vect_close(openedMap)
return -1
box = vectlib.bound_box()
List = POINTER(vectlib.boxlist)
List = vectlib.Vect_new_boxlist(c_int(0))
box.E = box.W = e
box.N = box.S = n
box.T = box.B = 0
vectlib.Vect_select_lines_by_box(
openedMap, byref(box),
vectlib.GV_POINT, List)
found = 0
dcost = 0
Cats = POINTER(vectlib.line_cats)
Cats = vectlib.Vect_new_cats_struct()
cat = c_int(0)
for j in range(List.contents.n_values):
line = List.contents.id[j]
type = vectlib.Vect_read_line(openedMap, None, Cats, line)
if type != vectlib.GV_POINT:
continue
if vectlib.Vect_cat_get(Cats, c_int(layer), byref(cat)):
found = 1
break
if found:
return cat.value
return -1
def _read_vector_info(name, mapset):
"""Read the vector map info from the file system and store the content
into a dictionary
This method uses the ctypes interface to the vector libraries
to read the map metadata information
:param name: The name of the map
:param mapset: The mapset of the map
:returns: The key value pairs of the map specific metadata, or None in
case of an error
"""
kvp = {}
if not libgis.G_find_vector(name, mapset):
return None
# The vector map structure
Map = libvector.Map_info()
# We open the maps always in topology mode first
libvector.Vect_set_open_level(2)
with_topo = True
# Code lend from v.info main.c
if libvector.Vect_open_old_head2(byref(Map), name, mapset, "1") < 2:
# force level 1, open fully
# NOTE: number of points, lines, boundaries, centroids,
# faces, kernels is still available
libvector.Vect_set_open_level(1) # no topology
with_topo = False
if libvector.Vect_open_old2(byref(Map), name, mapset, "1") < 1:
logging.error(
_("Unable to open vector map <%s>" %
(libvector.Vect_get_full_name(byref(Map)))))
return None
# Release the vector spatial index memory when closed
libvector.Vect_set_release_support(byref(Map))
# Read the extent information
bbox = libvector.bound_box()
libvector.Vect_get_map_box(byref(Map), byref(bbox))
kvp["north"] = bbox.N
kvp["south"] = bbox.S
kvp["east"] = bbox.E
kvp["west"] = bbox.W
kvp["top"] = bbox.T
kvp["bottom"] = bbox.B
kvp["map3d"] = bool(libvector.Vect_is_3d(byref(Map)))
# Read number of features
if with_topo:
kvp["points"] = libvector.Vect_get_num_primitives(
byref(Map), libvector.GV_POINT)
kvp["lines"] = libvector.Vect_get_num_primitives(
byref(Map), libvector.GV_LINE)
kvp["boundaries"] = libvector.Vect_get_num_primitives(
byref(Map), libvector.GV_BOUNDARY)
kvp["centroids"] = libvector.Vect_get_num_primitives(
byref(Map), libvector.GV_CENTROID)
kvp["faces"] = libvector.Vect_get_num_primitives(
byref(Map), libvector.GV_FACE)
kvp["kernels"] = libvector.Vect_get_num_primitives(
byref(Map), libvector.GV_KERNEL)
# Summarize the primitives
kvp["primitives"] = kvp["points"] + kvp["lines"] + \
kvp["boundaries"] + kvp["centroids"]
if kvp["map3d"]:
kvp["primitives"] += kvp["faces"] + kvp["kernels"]
# Read topology information
kvp["nodes"] = libvector.Vect_get_num_nodes(byref(Map))
kvp["areas"] = libvector.Vect_get_num_areas(byref(Map))
kvp["islands"] = libvector.Vect_get_num_islands(byref(Map))
kvp["holes"] = libvector.Vect_get_num_holes(byref(Map))
kvp["volumes"] = libvector.Vect_get_num_primitives(
byref(Map), libvector.GV_VOLUME)
else:
kvp["points"] = None
kvp["lines"] = None
kvp["boundaries"] = None
kvp["centroids"] = None
kvp["faces"] = None
kvp["kernels"] = None
kvp["primitives"] = None
kvp["nodes"] = None
kvp["areas"] = None
kvp["islands"] = None
kvp["holes"] = None
kvp["volumes"] = None
libvector.Vect_close(byref(Map))
return kvp
def _read_vector_info(name, mapset):
"""Read the vector map info from the file system and store the content
into a dictionary
This method uses the ctypes interface to the vector libraries
to read the map metadata information
:param name: The name of the map
:param mapset: The mapset of the map
:returns: The key value pairs of the map specific metadata, or None in
case of an error
"""
kvp = {}
if not libgis.G_find_vector(name, mapset):
return None
# The vector map structure
Map = libvector.Map_info()
# We open the maps always in topology mode first
libvector.Vect_set_open_level(2)
with_topo = True
# Code lend from v.info main.c
if libvector.Vect_open_old_head2(byref(Map), name, mapset, "1") < 2:
# force level 1, open fully
# NOTE: number of points, lines, boundaries, centroids,
# faces, kernels is still available
libvector.Vect_set_open_level(1) # no topology
with_topo = False
if libvector.Vect_open_old2(byref(Map), name, mapset, "1") < 1:
logging.error(_("Unable to open vector map <%s>" %
(libvector.Vect_get_full_name(byref(Map)))))
return None
# Release the vector spatial index memory when closed
libvector.Vect_set_release_support(byref(Map))
# Read the extent information
bbox = libvector.bound_box()
libvector.Vect_get_map_box(byref(Map), byref(bbox))
kvp["north"] = bbox.N
kvp["south"] = bbox.S
kvp["east"] = bbox.E
kvp["west"] = bbox.W
kvp["top"] = bbox.T
kvp["bottom"] = bbox.B
kvp["map3d"] = bool(libvector.Vect_is_3d(byref(Map)))
# Read number of features
if with_topo:
kvp["points"] = libvector.Vect_get_num_primitives(
byref(Map), libvector.GV_POINT)
kvp["lines"] = libvector.Vect_get_num_primitives(
byref(Map), libvector.GV_LINE)
kvp["boundaries"] = libvector.Vect_get_num_primitives(
byref(Map), libvector.GV_BOUNDARY)
kvp["centroids"] = libvector.Vect_get_num_primitives(
byref(Map), libvector.GV_CENTROID)
kvp["faces"] = libvector.Vect_get_num_primitives(
byref(Map), libvector.GV_FACE)
kvp["kernels"] = libvector.Vect_get_num_primitives(
byref(Map), libvector.GV_KERNEL)
# Summarize the primitives
kvp["primitives"] = kvp["points"] + kvp["lines"] + \
kvp["boundaries"] + kvp["centroids"]
if kvp["map3d"]:
kvp["primitives"] += kvp["faces"] + kvp["kernels"]
# Read topology information
kvp["nodes"] = libvector.Vect_get_num_nodes(byref(Map))
kvp["areas"] = libvector.Vect_get_num_areas(byref(Map))
kvp["islands"] = libvector.Vect_get_num_islands(byref(Map))
kvp["holes"] = libvector.Vect_get_num_holes(byref(Map))
kvp["volumes"] = libvector.Vect_get_num_primitives(
byref(Map), libvector.GV_VOLUME)
else:
kvp["points"] = None
kvp["lines"] = None
kvp["boundaries"] = None
kvp["centroids"] = None
kvp["faces"] = None
kvp["kernels"] = None
kvp["primitives"] = None
kvp["nodes"] = None
kvp["areas"] = None
kvp["islands"] = None
kvp["holes"] = None
kvp["volumes"] = None
libvector.Vect_close(byref(Map))
return kvp
def GetNearestNodeCat(e, n, layer, tresh, vectMap):
if not haveCtypes:
return -2
vectMapName, mapSet = ParseMapStr(vectMap)
openedMap = pointer(vectlib.Map_info())
ret = vectlib.Vect_open_old(openedMap,
c_char_p(vectMapName),
c_char_p(mapSet))
if ret == 1:
vectlib.Vect_close(openedMap)
if ret != 2:
return -1
nodeNum = vectlib.Vect_find_node(openedMap,
c_double(e),
c_double(n),
c_double(0),
c_double(tresh),
vectlib.WITHOUT_Z)
if nodeNum > 0:
e = c_double(0)
n = c_double(0)
vectlib.Vect_get_node_coor(openedMap,
nodeNum,
byref(e),
byref(n),
None); # z
e = e.value
n = n.value
else:
vectlib.Vect_close(openedMap)
return -1
box = vectlib.bound_box();
List = POINTER(vectlib.boxlist);
List = vectlib.Vect_new_boxlist(c_int(0));
box.E = box.W = e;
box.N = box.S = n;
box.T = box.B = 0;
vectlib.Vect_select_lines_by_box(openedMap, byref(box), vectlib.GV_POINT, List);
found = 0;
dcost = 0;
Cats = POINTER(vectlib.line_cats)
Cats = vectlib.Vect_new_cats_struct()
cat = c_int(0)
for j in range(List.contents.n_values):
line = List.contents.id[j]
type = vectlib.Vect_read_line(openedMap, None, Cats, line)
if type != vectlib.GV_POINT:
continue
if vectlib.Vect_cat_get(Cats, c_int(layer), byref(cat)):
found = 1
break
if found:
return cat.value
return -1
