def get_tile(request, source: MapSource, z=0, x=0, y=0):
if not source.is_loaded:
print(f'Dynamically Loading Data {source.name}', file=sys.stdout)
source.load()
img = render_map(source, x=int(x), y=int(y), z=int(z))
return StreamingHttpResponse(img.to_bytesio(), content_type='image/png')
def flask_to_tile(source: MapSource, z=0, x=0, y=0):
if not source.is_loaded:
print(f'Dynamically Loading Data {source.name}', file=sys.stdout)
source.load()
img = render_map(source, x=int(x), y=int(y), z=int(z))
return send_file(img.to_bytesio(), mimetype='image/png')
def test_default_to_image(source_func):
source = source_func()
img = render_map(source,
xmin=-20e6,
ymin=-20e6,
xmax=20e6,
ymax=20e6,
width=500,
height=500)
assert isinstance(img, Image)
def get_image(request, source: MapSource,
xmin=-20e6, ymin=-20e6,
xmax=20e6, ymax=20e6,
height=500, width=500):
if not source.is_loaded:
source.load()
img = render_map(source, xmin=float(xmin), ymin=float(ymin),
xmax=float(xmax), ymax=float(ymax),
height=int(height), width=int(width))
return StreamingHttpResponse(img.to_bytesio(), content_type='image/png')
def flask_to_image(source: MapSource,
xmin=-20e6, ymin=-20e6,
xmax=20e6, ymax=20e6,
height=500, width=500):
if not source.is_loaded:
source.load()
img = render_map(source, xmin=float(xmin), ymin=float(ymin),
xmax=float(xmax), ymax=float(ymax),
height=int(height), width=int(width))
return send_file(img.to_bytesio(), mimetype='image/png')
def flask_to_wms(source: MapSource):
if not source.is_loaded:
source.load()
height = request.args.get('height')
width = request.args.get('width')
bbox = request.args.get('bbox')
xmin, ymin, xmax, ymax = bbox.split(',')
img = render_map(source, xmin=float(xmin), ymin=float(ymin),
xmax=float(xmax), ymax=float(ymax),
height=int(height), width=int(width))
return send_file(img.to_bytesio(), mimetype='image/png')
def get_wms(request, source: MapSource):
if not source.is_loaded:
source.load()
height = request.GET.get('height')
width = request.GET.get('width')
bbox = request.GET.get('bbox', '')
xmin, ymin, xmax, ymax = bbox.split(',')
img = render_map(source, xmin=float(xmin), ymin=float(ymin),
xmax=float(xmax), ymax=float(ymax),
height=int(height), width=int(width))
return StreamingHttpResponse(img.to_bytesio(), content_type='image/png')
def test_tile_render_edge_effects():
source = MapSource.from_obj(elevation_source()).load()
# this tile was bad...
agg = create_agg(source, x=10, y=11, z=5)
first_col = agg.data[:, 0]
last_col = agg.data[:, -1]
top_row = agg.data[0, :] # TODO: do i have these flipped?
bottom_row = agg.data[-1, :]
assert np.all(~np.isnan(first_col))
assert np.all(~np.isnan(last_col))
assert np.all(~np.isnan(top_row))
assert np.all(~np.isnan(bottom_row))
img = render_map(source, x=10, y=11, z=5)
assert isinstance(img, Image)
def test_default_to_tile(source_func):
source = source_func()
img = render_map(source, x=0, y=0, z=0)
assert isinstance(img, Image)
def test_default_to_tile(source_func):
source = MapSource.from_obj(source_func()).load()
img = render_map(source, x=0, y=0, z=0, height=256, width=256)
assert isinstance(img, Image)
def flask_to_tile(source, z=0, x=0, y=0):
img = render_map(source, x=int(x), y=int(y), z=int(z))
return send_file(img.to_bytesio(), mimetype='image/png')