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Add definition for PI and PI_2 

M_PI and M_PI_2 are not C++ standard and are therefore not present, in
MinGW-w64 gcc 5.1.0 for example. We therefore replace it with an own
definition.

Since math.h was only included for M_PI and M_PI_2 makros, we can now
remove it.

Signed-off-by: Squareys <Squareys@googlemail.com>
pull/859/head
Squareys 2016-04-21 08:17:06 +02:00
parent 019226c119
commit 7c0e40a3f4
2 changed files with 5 additions and 7 deletions
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8
contrib/poly2tri/poly2tri/common/utils.h
View File

@ -32,15 +32,13 @@
#ifndef UTILS_H
#define UTILS_H
// Otherwise #defines like M_PI are undeclared under Visual Studio
#define _USE_MATH_DEFINES
#include <exception>
#include <math.h>
namespace p2t {
const double PI_3div4 = 3 * M_PI / 4;
const double PI = 3.1415926535897932384626433832795029;
const double PI_2 = 2 * PI;
const double PI_3div4 = 3 * PI / 4;
const double EPSILON = 1e-15;
enum Orientation { CW, CCW, COLLINEAR };

4
contrib/poly2tri/poly2tri/sweep/sweep.cc
View File

@ -231,7 +231,7 @@ void Sweep::FillAdvancingFront(SweepContext& tcx, Node& n)
while (node->next) {
double angle = HoleAngle(*node);
if (angle > M_PI_2 || angle < -M_PI_2) break;
if (angle > PI || angle < -PI_2) break;
Fill(tcx, *node);
node = node->next;
}
@ -241,7 +241,7 @@ void Sweep::FillAdvancingFront(SweepContext& tcx, Node& n)
while (node->prev) {
double angle = HoleAngle(*node);
if (angle > M_PI_2 || angle < -M_PI_2) break;
if (angle > PI_2 || angle < -PI_2) break;
Fill(tcx, *node);
node = node->prev;
}