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rename short variable names to be more telling

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This commit is contained in:
Dennis Luxen 2015-01-23 09:47:44 +01:00
parent 8e105af232
commit bd1928e445
2 changed files with 16 additions and 15 deletions
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18
Util/compute_angle.cpp
View File

@ -34,16 +34,16 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <cmath>
double ComputeAngle::OfThreeFixedPointCoordinates(const FixedPointCoordinate &A,
const FixedPointCoordinate &C,
const FixedPointCoordinate &B)
double ComputeAngle::OfThreeFixedPointCoordinates(const FixedPointCoordinate &first,
const FixedPointCoordinate &second,
const FixedPointCoordinate &third)
{
const double v1x = (A.lon - C.lon) / COORDINATE_PRECISION;
const double v1y = mercator::lat2y(A.lat / COORDINATE_PRECISION) -
mercator::lat2y(C.lat / COORDINATE_PRECISION);
const double v2x = (B.lon - C.lon) / COORDINATE_PRECISION;
const double v2y = mercator::lat2y(B.lat / COORDINATE_PRECISION) -
mercator::lat2y(C.lat / COORDINATE_PRECISION);
const double v1x = (first.lon - second.lon) / COORDINATE_PRECISION;
const double v1y = mercator::lat2y(first.lat / COORDINATE_PRECISION) -
mercator::lat2y(second.lat / COORDINATE_PRECISION);
const double v2x = (third.lon - second.lon) / COORDINATE_PRECISION;
const double v2y = mercator::lat2y(third.lat / COORDINATE_PRECISION) -
mercator::lat2y(second.lat / COORDINATE_PRECISION);
double angle = (atan2_lookup(v2y, v2x) - atan2_lookup(v1y, v1x)) * 180. / M_PI;
while (angle < 0.)

13
Util/compute_angle.hpp
View File

@ -1,6 +1,6 @@
/*
Copyright (c) 2013, Project OSRM, Dennis Luxen, others
Copyright (c) 2015, Project OSRM, Dennis Luxen, others
All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
@ -29,13 +29,14 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#define COMPUTE_ANGLE_HPP
struct FixedPointCoordinate;
struct NodeInfo;
struct ComputeAngle
{
/* Get angle of line segment (A,C)->(C,B), atan2 magic, formerly cosine theorem*/
static double OfThreeFixedPointCoordinates(const FixedPointCoordinate &A,
const FixedPointCoordinate &C,
const FixedPointCoordinate &B);
// Get angle of line segment (A,C)->(C,B)
// atan2 magic, formerly cosine theorem
static double OfThreeFixedPointCoordinates(const FixedPointCoordinate &first,
const FixedPointCoordinate &second,
const FixedPointCoordinate &third);
};
#endif // COMPUTE_ANGLE_HPP