Restructure project sources.

src/fmri/ActivityAnimation.hpp

@@ -0,0 +1,34 @@
+#pragma once
+
+#include <cstddef>
+#include <memory>
+#include <vector>
+#include "Animation.hpp"
+#include "utils.hpp"
+
+namespace fmri
+{
+    class ActivityAnimation
+            : public Animation
+    {
+    public:
+        typedef std::array<float, 3> Color;
+        typedef std::function<Color(float)> ColoringFunction;
+
+        ActivityAnimation(
+                    const std::vector<std::pair<DType, std::pair<std::size_t, std::size_t>>> &interactions,
+                    const float *aPositions, const float *bPositions);
+        ActivityAnimation(
+                    const std::vector<std::pair<DType, std::pair<std::size_t, std::size_t>>> &interactions,
+                    const float *aPositions, const float *bPositions, ColoringFunction coloring);
+        void draw(float timeScale) override;
+
+        static Color colorBySign(float intensity);
+
+    private:
+        std::size_t bufferLength;
+        std::vector<std::array<float, 3>> colorBuf;
+        std::vector<float> startingPos;
+        std::vector<float> delta;
+    };
+}