wip: Adds functions to produce gradient and random data in 1D.

include/maths_geometry/data_producers.hpp

@@ -0,0 +1,66 @@
+#pragma once
+
+#ifndef _USE_MATH_DEFINES
+#define _USE_MATH_DEFINES
+#endif
+
+// #include <cmath>
+// #include <algorithm>
+#include <type_traits>
+#include <cstdlib>
+
+#ifdef __NVCC__
+#include <device_launch_parameters.h>
+#define HOSTDEVDECOR    __host__ __device__
+#else 
+#define HOSTDEVDECOR
+#endif
+
+namespace dataprod
+{  
+   /**
+    * @brief 
+    * 
+    * @tparam T 
+    * @tparam num_t 
+    * 
+    */
+   template <typename T, typename num_t>
+   HOSTDEVDECOR
+   typename std::enable_if<std::is_floating_point<T>::value && 
+      std::is_integral<num_t>::value, void>::type
+   gradient_1D(T* data, num_t n, T start, T finish)
+   {
+      T dd = (finish - start) / (n - 1);
+      for (auto i = 0; i < n; ++i)
+         data[i] = start + i * dd;
+   }
+
+   /**
+    * @brief 
+    * 
+    * @tparam T 
+    * @tparam num_t 
+    * 
+    */
+   template <typename T, typename num_t>
+   HOSTDEVDECOR
+   typename std::enable_if<std::is_floating_point<T>::value && 
+      std::is_integral<num_t>::value, void>::type
+   random_1D(T* data, num_t n, T minval, T maxval)
+   {
+      T dd = (finish - start) / (n - 1);
+      for (auto i = 0; i < n; ++i)
+         data[i] = minval + (static_cast<T>(std::rand()) / stati_cast<T>(RAND_MAX)) * (maxval - minval);
+   }
+
+   // TODO:
+   //   - gradient 2D
+   //   - random 2D
+   //   - waves 1D
+   //   - waves 2D
+   //   - modify 1D domain with features (using set values)
+   //   - modify 2D domain with features (using set values)
+
+
+}