lib/georuby-ext/rspec_helper.rb
RSpec::Matchers.define :be_same_polygon do |reference|
match do |actual|
reference =
case reference
when Array
GeoRuby::SimpleFeatures::Polygon.from_coordinates [reference]
when String
geometry reference
else
reference
end
[actual.points, reference.points].transpose.all? do |actual_point, reference_point|
actual_point.euclidian_distance(reference_point) < 0.01
end
end
end
def geometry(text, srid = 4326)
GeoRuby::SimpleFeatures::Geometry.from_ewkt "SRID=#{srid};#{text}"
end
def point(x=0.0, y=0.0, srid = 4326)
if String === x
geometry("POINT(#{x})")
else
GeoRuby::SimpleFeatures::Point.from_x_y x, y, srid
end
end
def points(text)
text.split(",").collect { |definition| point definition }
end
def line_string(*points)
if points.one? and String === points.first
geometry("LINESTRING(#{points.join(",")})")
else
GeoRuby::SimpleFeatures::LineString.from_points(points, points.first.srid)
end
end
def multi_line_string(*lines)
if lines.one? and String === lines.first
geometry("MULTILINESTRING(#{lines.join(",")})")
else
GeoRuby::SimpleFeatures::MultiLineString.from_line_strings lines, lines.first.srid
end
end
def linear_ring(*points)
GeoRuby::SimpleFeatures::LinearRing.from_points(points, points.first.srid)
end
def envelope(lower_corner, upper_corner)
lower_corner = point(lower_corner) if String === lower_corner
upper_corner = point(upper_corner) if String === upper_corner
GeoRuby::SimpleFeatures::Envelope.from_points([lower_corner, upper_corner], lower_corner.srid)
end
def polygon(*points)
if points.one? and String === points.first
geometry("POLYGON(#{points.join(",")})")
else
GeoRuby::SimpleFeatures::Polygon.from_points([points], points.first.srid)
end
end
def multi_polygon(*polygons)
GeoRuby::SimpleFeatures::MultiPolygon.from_polygons([polygons], polygons.first.srid)
end
def rgeo_factory
@rgeo_factory ||= RGeo::Geos.factory(:srid => 4326, :native_interface => :ffi, :wkt_parser => {:support_ewkt => true})
end
def rgeo_point(x = 0, y = 0, srid = 4326)
rgeo_factory.point(x, y)
end
def rgeo_multi_polygon(polygons, srid = 4326)
rgeo_factory.multi_polygon(polygons)
end
def rgeo_multi_line_string(multi_line_string, srid = 4326)
if lines.one? and String === lines.first
geometry("MULTILINESTRING(#{lines})")
else
Rgeo::Geos::MultiLineString.from_line_strings lines, lines.first.srid
end
end
def rgeometry(text, srid = 4326)
rgeo_factory.parse_wkt text
end
def rgeo_line_string(text, srid = 4326)
rgeometry "LINESTRING(#{text})"
end