CV_PI

src/detection.cpp

@@ -1,7 +1,5 @@
 // Author: Michele Sprocatti
 
-#define _USE_MATH_DEFINES
-
 #include <opencv2/opencv.hpp>
 #include <iostream>
 #include <opencv2/features2d.hpp>
@@ -11,7 +9,6 @@
 #include "detection.h"
 #include "util.h"
 #include "minimapConstants.h"
-#include "math.h"
 
 using namespace cv;
 using namespace std;
@@ -154,7 +151,7 @@ Category classifyBall(const Mat& img, double radius)
 				gray.at<uchar>(i,j) = 0;
 	//imshow("gray", gray);
 	//cout << img.rows << "," << img.cols << endl;
-	int numberOfBackgroundPixels = 4 * pow(radius, 2) - M_PI * pow(radius, 2);
+	int numberOfBackgroundPixels = 4 * pow(radius, 2) - CV_PI * pow(radius, 2);
 	//cout << numberOfBackgroundPixels << endl;
 	const int channel[] = {0};
 	int histSize = 20;