Getting started with RGeo

gistfile1.rb

require 'rgeo'

# factory = RGeo::Geos.factory()
# factory = RGeo::Geographic.spherical_factory()
factory = RGeo::Geographic.simple_mercator_factory()

p1 = factory.point 0, 0
p2 = factory.point 0, 2
p3 = factory.point 2, 2
p4 = factory.point 2, 0

p5 = factory.point 4, 4
p6 = factory.point 4, 6
p7 = factory.point 6, 6
p8 = factory.point 6, 4

linear_ring = factory.linear_ring [p1,p2,p3,p4]
polygon = factory.polygon linear_ring

linear_ring2 = factory.linear_ring [p5,p6,p7,p8]
polygon2 = factory.polygon linear_ring2

multi_polygon = factory.multi_polygon [polygon, polygon2]

point = factory.point 1, 1
point2 = factory.point 5, 5
point3 = factory.point 10, 10

multi_point = factory.multi_point [point, point2, point3]

puts polygon.intersection point
puts polygon2.intersection point2

puts multi_polygon.intersection multi_point

zero = factory.point 0,0
um = factory.point 1,0

puts um.distance zero