osrm-backend/features/testbot/projection.feature

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Gherkin

@routing @projection @testbot
Feature: Projection to nearest point on road
# Waypoints are projected perpendiculary onto the closest road
Background:
# The coordinas below was calculated using http://www.movable-type.co.uk/scripts/latlong.html
# The nodes are placed as follows, with ab, bc and bd all being 1 km in length each:
# | | | c |
# | | b | | (this is sketch only, real data is in the table below)
# | a | | d |
Given the profile "testbot"
Given the node locations
| node | lat | lon |
| a | 80.000000 | 0.0000000 |
| b | 80.006350 | 0.0366666 |
| c | 80.012730 | 0.0733333 |
| d | 80.000000 | 0.0733333 |
And the ways
| nodes |
| abc |
Scenario: Projection onto way at high latitudes, 1km distance
When I route I should get
| from | to | route | bearing | distance |
| b | a | abc,abc | 0->225,225->0 | 1000m |
| b | c | abc,abc | 0->45,45->0 | 1000m +- 3 |
| a | d | abc,abc | 0->45,45->0 | 1000m |
| d | a | abc,abc | 0->225,225->0 | 1000m |
| c | d | abc,abc | 0->225,225->0 | 1000m +- 3 |
| d | c | abc,abc | 0->45,45->0 | 1000m +- 3 |
Scenario: Projection onto way at high latitudes, no distance
When I route I should get
| from | to | route | distance |
| d | b | abc,abc | 0m |
| b | d | abc,abc | 0m |