def test_render_points():

    if not mapnik.has_cairo(): return

    # create and populate point datasource (WGS84 lat-lon coordinates)
    ds = mapnik.MemoryDatasource()
    context = mapnik.Context()
    context.push('Name')
    f = mapnik.Feature(context,1)
    f['Name'] = 'Westernmost Point'
    f.add_geometries_from_wkt('POINT (142.48 -38.38)')
    ds.add_feature(f)

    f = mapnik.Feature(context,2)
    f['Name'] = 'Southernmost Point'
    f.add_geometries_from_wkt('POINT (143.10 -38.60)')
    ds.add_feature(f)

    # create layer/rule/style
    s = mapnik.Style()
    r = mapnik.Rule()
    symb = mapnik.PointSymbolizer()
    symb.allow_overlap = True
    r.symbols.append(symb)
    s.rules.append(r)
    lyr = mapnik.Layer('Places','+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs')
    lyr.datasource = ds
    lyr.styles.append('places_labels')
    # latlon bounding box corners
    ul_lonlat = mapnik.Coord(142.30,-38.20)
    lr_lonlat = mapnik.Coord(143.40,-38.80)
    # render for different projections 
    projs = { 
        'google': '+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m [email protected] +wktext +no_defs +over',
        'latlon': '+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs',
        'merc': '+proj=merc +datum=WGS84 +k=1.0 +units=m +over +no_defs',
        'utm': '+proj=utm +zone=54 +datum=WGS84'
        }
    for projdescr in projs.iterkeys():
        m = mapnik.Map(1000, 500, projs[projdescr])
        m.append_style('places_labels',s)
        m.layers.append(lyr)
        dest_proj = mapnik.Projection(projs[projdescr])
        src_proj = mapnik.Projection('+init=epsg:4326')
        tr = mapnik.ProjTransform(src_proj,dest_proj)
        m.zoom_to_box(tr.forward(mapnik.Box2d(ul_lonlat,lr_lonlat)))
        # Render to SVG so that it can be checked how many points are there with string comparison
        svg_file = os.path.join(tempfile.gettempdir(), 'mapnik-render-points-%s.svg' % projdescr)
        mapnik.render_to_file(m, svg_file)
        num_points_present = len(ds.all_features())
        svg = open(svg_file,'r').read()
        num_points_rendered = svg.count('<image ')
        eq_(num_points_present, num_points_rendered, "Not all points were rendered (%d instead of %d) at projection %s" % (num_points_rendered, num_points_present, projdescr)) 

def test_render_points():

    if not mapnik.has_cairo(): return

    # create and populate point datasource (WGS84 lat-lon coordinates)
    places_ds = mapnik.PointDatasource()
    places_ds.add_point(142.48,-38.38,'Name','Westernmost Point') # westernmost
    places_ds.add_point(143.10,-38.60,'Name','Southernmost Point') # southernmost
    # create layer/rule/style
    s = mapnik.Style()
    r = mapnik.Rule()
    symb = mapnik.PointSymbolizer()
    symb.allow_overlap = True
    r.symbols.append(symb)
    s.rules.append(r)
    lyr = mapnik.Layer('Places','+proj=latlon +datum=WGS84')
    lyr.datasource = places_ds
    lyr.styles.append('places_labels')
    # latlon bounding box corners
    ul_lonlat = mapnik.Coord(142.30,-38.20)
    lr_lonlat = mapnik.Coord(143.40,-38.80)
    # render for different projections 
    projs = { 
        'latlon': '+proj=latlon +datum=WGS84',
        'merc': '+proj=merc +datum=WGS84 +k=1.0 +units=m +over +no_defs',
        'google': '+proj=merc +ellps=sphere +R=6378137 +a=6378137 +units=m',
        'utm': '+proj=utm +zone=54 +datum=WGS84'
        }
    for projdescr in projs.iterkeys():
        m = mapnik.Map(1000, 500, projs[projdescr])
        m.append_style('places_labels',s)
        m.layers.append(lyr)
        p = mapnik.Projection(projs[projdescr])
        m.zoom_to_box(p.forward(mapnik.Box2d(ul_lonlat,lr_lonlat)))
        # Render to SVG so that it can be checked how many points are there with string comparison
        svg_file = '/tmp/%s.svg'
        mapnik.render_to_file(m, svg_file)
        num_points_present = len(places_ds.all_features())
        svg = open(svg_file,'r').read()
        num_points_rendered = svg.count('<image ')
        eq_(num_points_present, num_points_rendered, "Not all points were rendered (%d instead of %d) at projection %s" % (num_points_rendered, num_points_present, projdescr)) 

 def _render_surface(self, map, map_size):
     if self.format.startswith('image/'):
         # AGG
         f = str(self.format.split('/')[1].lower())
         im = mapnik.Image(*map_size)
         mapnik.render(map, im)
         return im.tostring(f)
     
     elif self.format in ('application/pdf', 'application/postscript', 'text/svg+xml'):
         # CAIRO
         try:
             # first, check if Cairo is available
             import cairo
             # newer Mapniks have better ways of checking whether they were actually
             # compiled with Cairo support
             if hasattr(mapnik, 'has_cairo') and (not mapnik.has_cairo()):
                 raise ImportError
             if hasattr(mapnik, 'has_pycairo') and (not mapnik.has_pycairo()):
                 raise ImportError
         except ImportError:
             raise ImportError("Mapnik wasn't compiled with Cairo support, or Cairo isn't installed.")
         
         surface_file = StringIO()
         if (self.format == 'application/pdf'):
             surface = cairo.PDFSurface(surface_file, *map_size)
         elif (self.format == 'application/postscript'):
             surface = cairo.PSSurface(surface_file, *map_size)
         elif (self.format == 'text/svg+xml'):
             surface = cairo.SVGSurface(surface_file, *map_size)
         
         mapnik.render(map, surface)
         surface.finish()
         return surface_file.getvalue()
     
     else:
         raise ValueError("Unknown format: %s" % self.format)

    im.save('demo.tif', 'tiff')
    images_.append('demo.tif')

if mapnik.has_webp():
    im.save('demo.webp', 'webp') # default quality is 90
    images_.append('demo.webp')

    im.save('demo_highest.webp', 'webp:quality=100')
    images_.append('demo_med.webp')

    im.save('demo_low.webp', 'webp:quality=50')
    images_.append('demo_low.webp')


# Render cairo examples
if  mapnik.has_cairo():
    mapnik.render_to_file(m,'demo.pdf')
    images_.append('demo.pdf')
    mapnik.render_to_file(m,'demo.ps')
    images_.append('demo.ps')
    mapnik.render_to_file(m,'demo.svg')
    images_.append('demo.svg')
    mapnik.render_to_file(m,'demo_cairo_rgb24.png','RGB24')
    images_.append('demo_cairo_rgb.png')
    mapnik.render_to_file(m,'demo_cairo_argb32.png','ARGB32')
    images_.append('demo_cairo_argb.png')

print ("\n\n", len(images_), "maps have been rendered in the current directory:")

for im_ in images_:
    print ("-", im_)

import sys
import os.path
from compare import compare, compare_grids

try:
    import json
except ImportError:
    import simplejson as json

visual_output_dir = "/tmp/mapnik-visual-images"

defaults = {
    'sizes': [(500, 100)],
    'scales':[1.0,2.0],
    'agg': True,
    'cairo': mapnik.has_cairo(),
    'grid': mapnik.has_grid_renderer()
}

cairo_threshold = 10
if 'Linux' == os.uname()[0]:
    # we assume if linux then you are running packaged cairo
    # which is older than the 1.12.14 version we used on OS X
    # to generate the expected images, so we'll rachet back the threshold
    # https://github.com/mapnik/mapnik/issues/1868
    cairo_threshold = 181

def render_cairo(m, output, scale_factor):
    mapnik.render_to_file(m, output, 'ARGB32', scale_factor)
    # open and re-save as png8 to save space
    new_im = mapnik.Image.open(output)

import mapnik

mapnik.logger.set_severity(mapnik.severity_type.None)

import sys
import os.path
from compare import compare, compare_grids

try:
    import json
except ImportError:
    import simplejson as json

visual_output_dir = "/tmp/mapnik-visual-images"

defaults = {"sizes": [(500, 100)], "scales": [1.0, 2.0], "agg": False, "cairo": mapnik.has_cairo(), "grid": True}

sizes_many_in_big_range = [(800, 100), (600, 100), (400, 100), (300, 100), (250, 100), (150, 100), (100, 100)]

sizes_few_square = [(800, 800), (600, 600), (400, 400), (200, 200)]
sizes_many_in_small_range = [
    (490, 100),
    (495, 100),
    (497, 100),
    (498, 100),
    (499, 100),
    (500, 100),
    (501, 100),
    (502, 100),
    (505, 100),
    (510, 100),

import sys
import os.path
from compare import compare, compare_grids

try:
    import json
except ImportError:
    import simplejson as json

visual_output_dir = "/tmp/mapnik-visual-images"

defaults = {
    "sizes": [(500, 100)],
    "scales": [1.0, 2.0],
    "agg": True,
    "cairo": mapnik.has_cairo(),
    "grid": mapnik.has_grid_renderer(),
}

cairo_threshold = 10
agg_threshold = 0
if "Linux" == os.uname()[0]:
    # we assume if linux then you are running packaged cairo
    # which is older than the 1.12.14 version we used on OS X
    # to generate the expected images, so we'll rachet back the threshold
    # https://github.com/mapnik/mapnik/issues/1868
    cairo_threshold = 230
    agg_threshold = 12


def render_cairo(m, output, scale_factor):