add some logging to PhantomGenerator, warning fix in CircleTrajectoryGenerator

elsa/generators/CircleTrajectoryGenerator.cpp

@@ -33,7 +33,7 @@ namespace elsa
 
         std::vector<Geometry> geometryList;
 
-        real_t angleIncrement = static_cast<real_t>(1.0) * arcDegrees / (numberOfPoses-1);
+        real_t angleIncrement = static_cast<real_t>(1.0) * arcDegrees / (numberOfPoses-1.0);
         for (index_t i = 0; i < numberOfPoses; ++i) {
             real_t angle = i * angleIncrement * pi / 180.0; // convert to radians
             if (dim == 2) {

elsa/generators/PhantomGenerator.cpp

 #include "PhantomGenerator.h"
 #include "EllipseGenerator.h"
+#include "Logger.h"
 
 #include <cmath>
 #include <stdexcept>
@@ -17,6 +18,8 @@ namespace elsa
         if (sizes.size() == 3 && (sizes[0] != sizes[1] || sizes[0] != sizes[2]))
             throw std::invalid_argument("PhantomGenerator::createModifiedSheppLogan: 3d size has to be cubed");
 
+        Logger::get("PhantomGenerator")->info("creating modified Shepp Logan phantom of size {}^{}", sizes[0], sizes.size());
+
         DataDescriptor dd(sizes);
         DataContainer<data_t> dc(dd);