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Compute turn angles in mercartor projection. Implements issues #596,

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#532
This commit is contained in:
DennisOSRM 2013-02-28 13:34:48 +01:00
parent bec4e4437d
commit 2cc2c967d1
3 changed files with 17 additions and 9 deletions
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10
Contractor/EdgeBasedGraphFactory.cpp
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@ -397,12 +397,12 @@ unsigned EdgeBasedGraphFactory::GetNumberOfNodes() const {
/* Get angle of line segment (A,C)->(C,B), atan2 magic, formerly cosine theorem*/
template<class CoordinateT>
double EdgeBasedGraphFactory::GetAngleBetweenTwoEdges(const CoordinateT& A, const CoordinateT& C, const CoordinateT& B) const {
const int v1x = A.lon - C.lon;
const int v1y = A.lat - C.lat;
const int v2x = B.lon - C.lon;
const int v2y = B.lat - C.lat;
const double v1x = (A.lon - C.lon)/100000.;
const double v1y = lat2y(A.lat/100000.) - lat2y(C.lat/100000.);
const double v2x = (B.lon - C.lon)/100000.;
const double v2y = lat2y(B.lat/100000.) - lat2y(C.lat/100000.);
double angle = (atan2((double)v2y,v2x) - atan2((double)v1y,v1x) )*180/M_PI;
double angle = (atan2(v2y,v2x) - atan2(v1y,v1x) )*180/M_PI;
while(angle < 0)
angle += 360;
return angle;

1
Contractor/EdgeBasedGraphFactory.h
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@ -45,6 +45,7 @@
#include "../Extractor/ExtractorStructs.h"
#include "../DataStructures/HashTable.h"
#include "../DataStructures/ImportEdge.h"
#include "../DataStructures/MercatorUtil.h"
#include "../DataStructures/QueryEdge.h"
#include "../DataStructures/Percent.h"
#include "../DataStructures/TurnInstructions.h"

15
features/testbot/turns.feature
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@ -97,20 +97,27 @@ Feature: Turn directions/codes
| g | c | xg,xc | head,right,destination |
| g | e | xg,xe | head,sharp_right,destination |
@todo
Scenario: Skadestuevej, København
Scenario: Turn instructions at high latitude
https://github.com/DennisOSRM/Project-OSRM/issues/532
Given the node locations
| node | lat | lon |
| a | 55.68740 | 12.52430 |
| b | 55.68745 | 12.52409 |
| c | 55.68711 | 12.52383 |
| x | -55.68740 | 12.52430 |
| y | -55.68745 | 12.52409 |
| z | -55.68711 | 12.52383 |
And the ways
| nodes |
| ab |
| bc |
| xy |
| yz |
When I route I should get
| from | to | route | turns |
| a | c | ab,bc | head,left,destination |
| from | to | route | turns |
| a | c | ab,bc | head,left,destination |
| c | a | bc,ab | head,right,destination |
| x | z | xy,yz | head,right,destination |
| z | x | yz,xy | head,left,destination |