adding, but not using, bluenets

include/sampler/BlueNets.h

@@ -0,0 +1,56 @@
+/** \file BlueNets.h
+    \author Wojciech Jarosz
+*/
+#pragma once
+
+#include <memory>
+#include <pcg32.h>
+#include <sampler/Sampler.h>
+#include <vector>
+
+/**
+    Generates optimized (0, m, 2)-nets, as described in the paper:
+
+        Ahmed and Wonka: "Optimizing Dyadic Nets"
+
+    Based on the `net-optimize-pointers.cpp` code by Ahmed, which contains no license.
+*/
+class BlueNets : public TSamplerDim<2>
+{
+public:
+    BlueNets(unsigned n = 2);
+
+    void sample(float[], unsigned i) override;
+
+    std::string name() const override
+    {
+        return "Blue nets";
+    }
+
+    int numSamples() const override
+    {
+        return pointCount;
+    }
+    int setNumSamples(unsigned num) override;
+
+    bool randomized() const override
+    {
+        return m_randomize;
+    }
+    void setRandomized(bool r = true) override;
+
+private:
+    void regenerate();
+
+    std::vector<float> xs, ys;
+
+    bool        m_randomize          = true;
+    int         iterations           = 1;
+    double      sigma                = 0.5;
+    std::string optimizationSequence = "v";
+    double      rf                   = 0.75;
+    int         range                = 0;
+    uint32_t    pointCount           = 1;
+
+    pcg32 m_rand;
+};