initial rough working

vtk/src/advection/AdvectionKernel.h

@@ -0,0 +1,32 @@
+#ifndef ADVECTION_ADVECTIONKERNEL_H
+#define ADVECTION_ADVECTIONKERNEL_H
+
+#include <tuple>
+
+#include "Vel.h"
+
+
+/*
+ * Implement this class for every integration method.
+ */
+class AdvectionKernel {
+public:
+    const static int DT = 15 * 60 * 15; // 60 sec/min * 15 mins
+    /**
+     * This function must take a time, latitude and longitude of a particle and must output
+     * a new latitude and longitude after being advected once for AdvectionKernel::DT time as defined above.
+     * @param time Time since the beginning of the data
+     * @param latitude Latitude of particle
+     * @param longitude Longitude of particle
+     * @return A pair of latitude and longitude of particle.
+     */
+    virtual std::pair<double, double> advect(int time, double latitude, double longitude) const = 0;
+
+    // Taken from Parcels https://github.com/OceanParcels/parcels/blob/daa4b062ed8ae0b2be3d87367d6b45599d6f95db/parcels/tools/converters.py#L155
+    const static double metreToDegrees(double metre) {
+        return metre / 1000. / 1.852 / 60.;
+    }
+
+};
+
+#endif //ADVECTION_ADVECTIONKERNEL_H