265 lines
9.4 KiB
Python
265 lines
9.4 KiB
Python
from django.db import models
|
|
from django.utils.functional import cached_property
|
|
from django.utils.translation import ugettext_lazy as _
|
|
from shapely.geometry import CAP_STYLE, JOIN_STYLE
|
|
from shapely.ops import cascaded_union
|
|
|
|
from c3nav.mapdata.models.base import MapItem
|
|
from c3nav.mapdata.utils.geometry import assert_multilinestring, assert_multipolygon
|
|
|
|
|
|
class Level(MapItem):
|
|
"""
|
|
A map level (-1, 0, 1, 2…)
|
|
"""
|
|
name = models.SlugField(_('level name'), unique=True, max_length=50,
|
|
help_text=_('Usually just an integer (e.g. -1, 0, 1, 2)'))
|
|
altitude = models.DecimalField(_('level altitude'), null=False, unique=True, max_digits=6, decimal_places=2)
|
|
intermediate = models.BooleanField(_('intermediate level'))
|
|
|
|
class Meta:
|
|
verbose_name = _('Level')
|
|
verbose_name_plural = _('Levels')
|
|
default_related_name = 'levels'
|
|
ordering = ['altitude']
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
super().__init__(*args, **kwargs)
|
|
|
|
@cached_property
|
|
def public_geometries(self):
|
|
return LevelGeometries.by_level(self, only_public=True)
|
|
|
|
@cached_property
|
|
def geometries(self):
|
|
return LevelGeometries.by_level(self, only_public=False)
|
|
|
|
def tofilename(self):
|
|
return 'levels/%s.json' % self.name
|
|
|
|
def lower(self):
|
|
return Level.objects.filter(altitude__lt=self.altitude).order_by('altitude')
|
|
|
|
def higher(self):
|
|
return Level.objects.filter(altitude__gt=self.altitude).order_by('altitude')
|
|
|
|
@classmethod
|
|
def fromfile(cls, data, file_path):
|
|
kwargs = super().fromfile(data, file_path)
|
|
|
|
if 'altitude' not in data:
|
|
raise ValueError('missing altitude.')
|
|
|
|
if not isinstance(data['altitude'], (int, float)):
|
|
raise ValueError('altitude has to be int or float.')
|
|
|
|
kwargs['altitude'] = data['altitude']
|
|
|
|
if 'intermediate' not in data:
|
|
raise ValueError('missing intermediate.')
|
|
|
|
if not isinstance(data['intermediate'], bool):
|
|
raise ValueError('intermediate has to be boolean.')
|
|
|
|
kwargs['intermediate'] = data['intermediate']
|
|
|
|
return kwargs
|
|
|
|
def tofile(self):
|
|
result = super().tofile()
|
|
result['altitude'] = float(self.altitude)
|
|
result['intermediate'] = self.intermediate
|
|
return result
|
|
|
|
def __str__(self):
|
|
return self.name
|
|
|
|
|
|
class LevelGeometries():
|
|
by_level_name = {}
|
|
|
|
@classmethod
|
|
def by_level(cls, level, only_public=True):
|
|
return cls.by_level_name.setdefault((level.name, only_public), cls(level, only_public=only_public))
|
|
|
|
def __init__(self, level, only_public=True):
|
|
self.level = level
|
|
self.only_public = only_public
|
|
|
|
from c3nav.access.apply import get_public_packages
|
|
self.public_packages = get_public_packages()
|
|
|
|
def query(self, name):
|
|
queryset = getattr(self.level, name)
|
|
if not self.only_public:
|
|
return queryset.all()
|
|
return queryset.filter(package__in=self.public_packages)
|
|
|
|
@cached_property
|
|
def raw_rooms(self):
|
|
return cascaded_union([room.geometry for room in self.query('rooms')])
|
|
|
|
@cached_property
|
|
def buildings(self):
|
|
result = cascaded_union([building.geometry for building in self.query('buildings')])
|
|
if self.level.intermediate:
|
|
result = cascaded_union([result, self.raw_rooms])
|
|
return result
|
|
|
|
@cached_property
|
|
def rooms(self):
|
|
return self.raw_rooms.intersection(self.buildings)
|
|
|
|
@cached_property
|
|
def outsides(self):
|
|
return cascaded_union([outside.geometry for outside in self.query('outsides')]).difference(self.buildings)
|
|
|
|
@cached_property
|
|
def mapped(self):
|
|
return cascaded_union([self.buildings, self.outsides])
|
|
|
|
@cached_property
|
|
def lineobstacles(self):
|
|
lineobstacles = []
|
|
for obstacle in self.query('lineobstacles'):
|
|
lineobstacles.append(obstacle.geometry.buffer(obstacle.width/2,
|
|
join_style=JOIN_STYLE.mitre, cap_style=CAP_STYLE.flat))
|
|
return cascaded_union(lineobstacles)
|
|
|
|
@cached_property
|
|
def uncropped_obstacles(self):
|
|
obstacles = [obstacle.geometry for obstacle in self.query('obstacles').filter(crop_to_level__isnull=True)]
|
|
return cascaded_union(obstacles).intersection(self.mapped)
|
|
|
|
@cached_property
|
|
def cropped_obstacles(self):
|
|
levels_by_name = {}
|
|
obstacles_by_crop_to_level = {}
|
|
for obstacle in self.query('obstacles').filter(crop_to_level__isnull=False):
|
|
level_name = obstacle.crop_to_level.name
|
|
levels_by_name.setdefault(level_name, obstacle.crop_to_level)
|
|
obstacles_by_crop_to_level.setdefault(level_name, []).append(obstacle.geometry)
|
|
|
|
all_obstacles = []
|
|
for level_name, obstacles in obstacles_by_crop_to_level.items():
|
|
obstacles = cascaded_union(obstacles).intersection(levels_by_name[level_name].geometries.mapped)
|
|
all_obstacles.append(obstacles)
|
|
all_obstacles.extend(assert_multipolygon(self.lineobstacles))
|
|
|
|
return cascaded_union(all_obstacles).intersection(self.mapped)
|
|
|
|
@cached_property
|
|
def obstacles(self):
|
|
return cascaded_union([self.uncropped_obstacles, self.cropped_obstacles])
|
|
|
|
@cached_property
|
|
def raw_doors(self):
|
|
return cascaded_union([door.geometry for door in self.query('doors').all()]).intersection(self.mapped)
|
|
|
|
@cached_property
|
|
def raw_escalators(self):
|
|
return cascaded_union([escalator.geometry for escalator in self.query('escalators').all()])
|
|
|
|
@cached_property
|
|
def escalators(self):
|
|
return self.raw_escalators.intersection(self.accessible)
|
|
|
|
@cached_property
|
|
def elevatorlevels(self):
|
|
return cascaded_union([elevatorlevel.geometry for elevatorlevel in self.query('elevatorlevels').all()])
|
|
|
|
@cached_property
|
|
def areas(self):
|
|
return cascaded_union([self.rooms, self.outsides, self.elevatorlevels])
|
|
|
|
@cached_property
|
|
def holes(self):
|
|
return cascaded_union([holes.geometry for holes in self.query('holes').all()]).intersection(self.areas)
|
|
|
|
@cached_property
|
|
def accessible(self):
|
|
return self.areas.difference(cascaded_union([self.holes, self.obstacles]))
|
|
|
|
@cached_property
|
|
def accessible_without_oneways(self):
|
|
return self.accessible.difference(self.oneways_buffered)
|
|
|
|
@cached_property
|
|
def buildings_with_holes(self):
|
|
return self.buildings.difference(self.holes)
|
|
|
|
@cached_property
|
|
def outsides_with_holes(self):
|
|
return self.outsides.difference(self.holes)
|
|
|
|
@cached_property
|
|
def areas_and_doors(self):
|
|
return cascaded_union([self.areas, self.raw_doors])
|
|
|
|
@cached_property
|
|
def walls(self):
|
|
return self.buildings.difference(self.areas_and_doors)
|
|
|
|
@cached_property
|
|
def walls_shadow(self):
|
|
return self.walls.buffer(0.2, join_style=JOIN_STYLE.mitre).intersection(self.buildings_with_holes)
|
|
|
|
@cached_property
|
|
def doors(self):
|
|
return self.raw_doors.difference(self.areas)
|
|
|
|
def get_levelconnectors(self, to_level=None):
|
|
queryset = self.query('levelconnectors').prefetch_related('levels')
|
|
if to_level is not None:
|
|
queryset = queryset.filter(levels=to_level)
|
|
return cascaded_union([levelconnector.geometry for levelconnector in queryset])
|
|
|
|
@cached_property
|
|
def levelconnectors(self):
|
|
return cascaded_union([levelconnector.geometry for levelconnector in self.query('levelconnectors')])
|
|
|
|
@cached_property
|
|
def intermediate_shadows(self):
|
|
qs = self.query('levelconnectors').prefetch_related('levels').filter(levels__altitude__lt=self.level.altitude)
|
|
connectors = cascaded_union([levelconnector.geometry for levelconnector in qs])
|
|
shadows = self.buildings.difference(connectors.buffer(0.4, join_style=JOIN_STYLE.mitre))
|
|
shadows = shadows.buffer(0.3)
|
|
return shadows
|
|
|
|
@cached_property
|
|
def hole_shadows(self):
|
|
holes = self.holes.buffer(0.1, join_style=JOIN_STYLE.mitre)
|
|
shadows = holes.difference(self.holes.buffer(-0.3, join_style=JOIN_STYLE.mitre))
|
|
|
|
qs = self.query('levelconnectors').prefetch_related('levels').filter(levels__altitude__lt=self.level.altitude)
|
|
connectors = cascaded_union([levelconnector.geometry for levelconnector in qs])
|
|
|
|
shadows = shadows.difference(connectors.buffer(1.0, join_style=JOIN_STYLE.mitre))
|
|
return shadows
|
|
|
|
@cached_property
|
|
def stairs(self):
|
|
return cascaded_union([stair.geometry for stair in self.query('stairs')]).intersection(self.accessible)
|
|
|
|
@cached_property
|
|
def escalatorslopes(self):
|
|
return cascaded_union([s.geometry for s in self.query('escalatorslopes')]).intersection(self.accessible)
|
|
|
|
@cached_property
|
|
def oneways_raw(self):
|
|
return cascaded_union([oneway.geometry for oneway in self.query('oneways')])
|
|
|
|
@cached_property
|
|
def oneways(self):
|
|
return self.oneways_raw.intersection(self.accessible)
|
|
|
|
@cached_property
|
|
def oneways_buffered(self):
|
|
return self.oneways_raw.buffer(0.05, join_style=JOIN_STYLE.mitre, cap_style=CAP_STYLE.square)
|
|
|
|
@cached_property
|
|
def stair_areas(self):
|
|
left = []
|
|
for stair in assert_multilinestring(self.stairs):
|
|
left.append(stair.parallel_offset(0.15, 'right', join_style=JOIN_STYLE.mitre))
|
|
return cascaded_union(left).buffer(0.20, join_style=JOIN_STYLE.mitre, cap_style=CAP_STYLE.flat)
|