def expose_ev(self, widget, event):
if(widget.allocation.width != self.width or widget.allocation.height != self.height ):
#debug("Rrresize!")
self.width = widget.allocation.width
self.height = widget.allocation.height
cr = widget.window.cairo_create()
if self.old_center_coord != self.center_coord or self.old_zoom != self.zoom:
#print "Recentered!"
xy = projections.from4326(self.center_coord,"EPSG:3857")
xy1 = projections.to4326((xy[0]-40075016.*(0.5**(self.zoom))/self.tiles.tilewidth*self.width, xy[1]-40075016.*(0.5**(self.zoom))/self.tiles.tileheight*self.height), "EPSG:3857")
xy2 = projections.to4326((xy[0]+40075016.*(0.5**(self.zoom))/self.tiles.tilewidth*self.width, xy[1]+40075016.*(0.5**(self.zoom))/self.tiles.tileheight*self.height), "EPSG:3857")
self.bbox = (xy1[0],xy1[1],xy2[0],xy2[1])
self.tilebox = projections.tile_by_bbox(self.bbox, self.zoom, "EPSG:3857")
self.old_center_coord = self.center_coord
self.old_zoom = self.zoom
from_tile_x, from_tile_y, to_tile_x, to_tile_y = self.tilebox
dx = 1.*(from_tile_x - int(from_tile_x))*self.tiles.tilewidth
dy = 1.*(from_tile_y - int(from_tile_y))*self.tiles.tileheight
print dx,dy
#print self.dx, self.dy
onscreen_tiles = set()
for x in range (int(from_tile_x), int(to_tile_x)+1):
for y in range (int(to_tile_y), int(from_tile_y)+1):
onscreen_tiles.add((self.zoom,x,y))
self.tiles.onscreen = onscreen_tiles
for z,x,y in onscreen_tiles:
tile = self.tiles[(self.zoom,x,y)]
#print dx+(x-from_tile_x)*self.tiles.tilewidth-self.width
#print dy+(y-from_tile_y)*self.tiles.tileheight-self.height
#cr.set_source_surface(tile, int(self.dx-dx+(x-int(from_tile_x))*self.tiles.tilewidth-self.width), int(self.dy-dy-(int(from_tile_y)-y)*self.tiles.tileheight+self.height))
cr.set_source_surface(tile, int(self.dx-dx+(x-int(from_tile_x))*self.tiles.tilewidth), int(self.dy-dy-(int(from_tile_y)-y)*self.tiles.tileheight+self.height))
cr.paint()
def expose_ev(self, widget, event):
if (widget.allocation.width != self.width
or widget.allocation.height != self.height):
# debug("Rrresize!")
self.width = widget.allocation.width
self.height = widget.allocation.height
cr = widget.window.cairo_create()
if self.old_center_coord != self.center_coord or self.old_zoom != self.zoom:
# print "Recentered!"
xy = projections.from4326(self.center_coord, "EPSG:3857")
xy1 = projections.to4326(
(xy[0] - 40075016. *
(0.5**(self.zoom)) / self.tiles.tilewidth * self.width,
xy[1] - 40075016. *
(0.5**(self.zoom)) / self.tiles.tileheight * self.height),
"EPSG:3857")
xy2 = projections.to4326(
(xy[0] + 40075016. *
(0.5**(self.zoom)) / self.tiles.tilewidth * self.width,
xy[1] + 40075016. *
(0.5**(self.zoom)) / self.tiles.tileheight * self.height),
"EPSG:3857")
self.bbox = (xy1[0], xy1[1], xy2[0], xy2[1])
self.tilebox = projections.tile_by_bbox(self.bbox, self.zoom,
"EPSG:3857")
self.old_center_coord = self.center_coord
self.old_zoom = self.zoom
from_tile_x, from_tile_y, to_tile_x, to_tile_y = self.tilebox
dx = 1. * (from_tile_x - int(from_tile_x)) * self.tiles.tilewidth
dy = 1. * (from_tile_y - int(from_tile_y)) * self.tiles.tileheight
print dx, dy
# print self.dx, self.dy
onscreen_tiles = set()
for x in range(int(from_tile_x), int(to_tile_x) + 1):
for y in range(int(to_tile_y), int(from_tile_y) + 1):
onscreen_tiles.add((self.zoom, x, y))
self.tiles.onscreen = onscreen_tiles
for z, x, y in onscreen_tiles:
tile = self.tiles[(self.zoom, x, y)]
# print dx+(x-from_tile_x)*self.tiles.tilewidth-self.width
# print dy+(y-from_tile_y)*self.tiles.tileheight-self.height
# cr.set_source_surface(tile, int(self.dx-dx+(x-int(from_tile_x))*self.tiles.tilewidth-self.width), int(self.dy-dy-(int(from_tile_y)-y)*self.tiles.tileheight+self.height))
cr.set_source_surface(
tile,
int(self.dx - dx +
(x - int(from_tile_x)) * self.tiles.tilewidth),
int(self.dy - dy -
(int(from_tile_y) - y) * self.tiles.tileheight +
self.height))
cr.paint()
def get_vectors(self, bbox, zoom, sql_hint=None, itags=None):
zoom = int(zoom)
zoom = min(
zoom, self.max_zoom
) ## If requested zoom is better than the best, take the best
zoom = max(zoom, 0) ## Negative zooms are nonsense
a, d, c, b = [
int(x) for x in projections.tile_by_bbox(bbox, zoom, self.proj)
]
resp = {}
hint = set()
for j in [x[0] for x in sql_hint]:
hint.update(j)
for tile in set([(zoom, i, j) for i in range(a, c + 1)
for j in range(b, d + 1)]):
# Loading current vector tile
try:
ti = self.tiles[tile]
except KeyError:
ti = self.load_tile(tile)
self.tiles[tile] = ti
try:
self.tile_load_log.remove(tile)
except ValueError:
pass
self.tile_load_log.append(tile)
for obj in ti:
"filling response with interesting-tagged objects"
need = False
for tag in ti[obj].tags:
#if tag in hint:
need = True
break
if need:
if twms.bbox.bbox_is_in(bbox, ti[obj].bbox, fully=False):
resp[obj] = ti[obj]
self.collect_garbage()
return resp
def get_vectors (self, bbox, zoom, sql_hint = None, itags = None):
zoom = int(zoom)
zoom = min(zoom, self.max_zoom) ## If requested zoom is better than the best, take the best
zoom = max(zoom, 0) ## Negative zooms are nonsense
a,d,c,b = [int(x) for x in projections.tile_by_bbox(bbox,zoom, self.proj)]
resp = {}
hint = set()
for j in [x[0] for x in sql_hint]:
hint.update(j)
for tile in set([(zoom,i,j) for i in range(a, c+1) for j in range(b, d+1)]):
# Loading current vector tile
try:
ti = self.tiles[tile]
except KeyError:
ti = self.load_tile(tile)
self.tiles[tile] = ti
try:
self.tile_load_log.remove(tile)
except ValueError:
pass
self.tile_load_log.append(tile)
for obj in ti:
"filling response with interesting-tagged objects"
need = False
for tag in ti[obj].tags:
#if tag in hint:
need = True
break
if need:
if twms.bbox.bbox_is_in(bbox, ti[obj].bbox, fully=False):
resp[obj] = ti[obj]
self.collect_garbage()
return resp