Fixed the Marco M_PI problem

MomentInvariants/vtkMomentsHelper.cxx

@@ -74,6 +74,10 @@ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <algorithm>    // std::sort
 #include <vector>
 
+#ifndef M_PI
+#define M_PI vtkMath::Pi()
+#endif
+
 /**
  * The monomial basis is not orthonormal. We need this function for the reconstruction of the
  * function from the moments. This function uses Gram Schmidt
@@ -839,7 +843,7 @@ std::vector<int> getTensorIndicesFromFieldName(std::string name)
   for (int i = name.find("x") + 1; i < name.length(); ++i)
   {
 //    std::cout<<i<<" :"<<name[i]<<"\n";
-    indices.push_back((int)(name[i]));
+    indices.push_back(static_cast<int>(name[i]));
   }
   return indices;
 }
@@ -1223,7 +1227,7 @@ double vtkMomentsHelper::normalizationWeight(unsigned dimension, unsigned i0, un
  * @return normalized moments
  */
 std::vector<vtkMomentsTensor> & vtkMomentsHelper::normalizeMoments(std::vector<vtkMomentsTensor> & moments) {
-  unsigned order = moments.size();
+  unsigned order = static_cast<int>(moments.size());
   unsigned dimension = moments.front().getDimension();