172 lines
9.1 KiB
Python
172 lines
9.1 KiB
Python
from django.utils.functional import cached_property
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from shapely import prepared
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from shapely.geometry import box
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from c3nav.mapdata.models import Level
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from c3nav.mapdata.render.engines.base import FillAttribs, StrokeAttribs
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from c3nav.mapdata.render.geometry import hybrid_union
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from c3nav.mapdata.render.renderdata import LevelRenderData
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from c3nav.mapdata.render.theme import ColorManager
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from c3nav.mapdata.render.utils import get_full_levels, get_min_altitude
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from c3nav.mapdata.utils.color import color_to_rgb, rgb_to_color
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class MapRenderer:
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def __init__(self, level, minx, miny, maxx, maxy, scale=1, access_permissions=None, full_levels=False,
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min_width=None):
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self.level = level.pk if isinstance(level, Level) else level
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self.minx = minx
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self.miny = miny
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self.maxx = maxx
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self.maxy = maxy
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self.scale = scale
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self.access_permissions = set(access_permissions) if access_permissions else set()
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self.full_levels = full_levels
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self.min_width = min_width/self.scale if min_width else None
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self.width = int(round((maxx - minx) * scale))
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self.height = int(round((maxy - miny) * scale))
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@cached_property
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def bbox(self):
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return box(self.minx-1, self.miny-1, self.maxx+1, self.maxy+1)
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def render(self, engine_cls, theme, center=True):
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color_manager = ColorManager.for_theme(theme)
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# add no access restriction to “unlocked“ access restrictions so lookup gets easier
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access_permissions = self.access_permissions | {None}
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bbox = prepared.prep(self.bbox)
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level_render_data = LevelRenderData.get(self.level, theme)
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engine = engine_cls(self.width, self.height, self.minx, self.miny, float(level_render_data.base_altitude),
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scale=self.scale, buffer=1, background=color_manager.background,
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center=center, min_width=self.min_width)
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if hasattr(engine, 'custom_render'):
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engine.custom_render(level_render_data, access_permissions, self.full_levels)
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return engine
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if self.full_levels:
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levels = get_full_levels(level_render_data)
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else:
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levels = level_render_data.levels
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min_altitude = get_min_altitude(levels, default=level_render_data.base_altitude)
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not_full_levels = engine.is_3d # always do non-full-levels until after the first primary level
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full_levels = self.full_levels and engine.is_3d
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for geoms in levels:
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engine.add_group('level_%s' % geoms.short_label)
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if geoms.pk == level_render_data.lowest_important_level:
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engine.darken(level_render_data.darken_area)
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if not bbox.intersects(geoms.affected_area):
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continue
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# hide indoor and outdoor rooms if their access restriction was not unlocked
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add_walls = hybrid_union(tuple(area for access_restriction, area in geoms.restricted_spaces_indoors.items()
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if access_restriction not in access_permissions))
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crop_areas = hybrid_union(
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tuple(area for access_restriction, area in geoms.restricted_spaces_outdoors.items()
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if access_restriction not in access_permissions)
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).union(add_walls)
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if not_full_levels:
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engine.add_geometry(geoms.walls_base, fill=FillAttribs(color_manager.wall_fill), category='walls')
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engine.add_geometry(geoms.walls_bottom.fit(scale=geoms.min_altitude-min_altitude,
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offset=min_altitude-int(0.7*1000)),
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fill=FillAttribs(color_manager.wall_fill), category='walls')
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for i, altitudearea in enumerate(geoms.altitudeareas):
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base = altitudearea.base.difference(crop_areas)
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bottom = altitudearea.bottom.difference(crop_areas)
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engine.add_geometry(base, fill=FillAttribs(color_manager.ground_fill), category='ground', item=i)
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engine.add_geometry(bottom.fit(scale=geoms.min_altitude - min_altitude,
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offset=min_altitude - int(0.7 * 1000)),
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fill=FillAttribs(color_manager.wall_fill), category='ground')
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# render altitude areas in default ground color and add ground colors to each one afterwards
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# shadows are directly calculated and added by the engine
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for i, altitudearea in enumerate(geoms.altitudeareas):
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geometry = altitudearea.geometry.difference(crop_areas)
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if not_full_levels:
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geometry = geometry.filter(bottom=False)
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engine.add_geometry(geometry, altitude=altitudearea.altitude,
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fill=FillAttribs(color_manager.ground_fill), category='ground', item=i)
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j = 0
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for (order, color), areas in altitudearea.colors.items():
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# only select ground colors if their access restriction is unlocked
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areas = tuple(area for access_restriction, area in areas.items()
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if access_restriction in access_permissions)
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if areas:
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j += 1
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hexcolor = ''.join(hex(int(i*255))[2:].zfill(2) for i in engine.color_to_rgb(color)).upper()
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engine.add_geometry(hybrid_union(areas), fill=FillAttribs(color),
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category='ground_%s' % hexcolor, item=j)
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# add obstacles after everything related to ground for the nice right order
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for i, altitudearea in enumerate(geoms.altitudeareas):
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for height, height_obstacles in altitudearea.obstacles.items():
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for color, color_obstacles in height_obstacles.items():
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for obstacle in color_obstacles:
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obstacle_geom = obstacle.difference(crop_areas)
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if color:
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fill_rgb = color_to_rgb(color)
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stroke_color = rgb_to_color((*((0.75*i) for i in fill_rgb[:3]), fill_rgb[3]))
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engine.add_geometry(
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obstacle_geom,
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fill=FillAttribs(color),
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stroke=StrokeAttribs(stroke_color, 0.05, min_px=0.2),
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category='obstacles'
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)
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else:
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engine.add_geometry(
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obstacle_geom,
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fill=FillAttribs(color_manager.obstacles_default_fill),
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stroke=StrokeAttribs(color_manager.obstacles_default_border, 0.05, min_px=0.2),
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category='obstacles'
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)
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# add walls, stroke_px makes sure that all walls are at least 1px thick on all zoom levels,
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walls = None
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# we use all_walls instead of walls, because the short wall rendering stuff doesn't work
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if not add_walls.is_empty or not geoms.all_walls.is_empty:
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walls = geoms.all_walls.union(add_walls)
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walls_extended = geoms.walls_extended and full_levels
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if walls is not None:
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engine.add_geometry(
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walls.filter(bottom=not not_full_levels,
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top=not walls_extended),
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height=geoms.default_height, shadow_color=color_manager.wall_border, fill=FillAttribs(color_manager.wall_fill), category='walls'
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)
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for short_wall in geoms.short_walls:
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engine.add_geometry(short_wall.filter(bottom=not not_full_levels),
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fill=FillAttribs(color_manager.wall_fill), category='walls')
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if walls_extended:
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engine.add_geometry(geoms.walls_extended, fill=FillAttribs(color_manager.wall_fill), category='walls')
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doors_extended = geoms.doors_extended and full_levels
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if not geoms.doors.is_empty:
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engine.add_geometry(geoms.doors.difference(add_walls).filter(top=not doors_extended),
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fill=FillAttribs(color_manager.door_fill),
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stroke=StrokeAttribs(color_manager.door_fill, 0.05, min_px=0.2),
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category='doors')
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if doors_extended:
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engine.add_geometry(geoms.doors_extended, fill=FillAttribs(color_manager.wall_fill), category='doors')
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if walls is not None:
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engine.add_geometry(walls,
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stroke=StrokeAttribs(color_manager.wall_border, 0.1, min_px=1),
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category='walls')
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if geoms.on_top_of_id is None:
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not_full_levels = not self.full_levels and engine.is_3d
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return engine
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