more refactor; draw samples grid and cursor; gen load fixes

1 files changed, 32 insertions, 0 deletions

diff --git a/source/circular.hpp b/source/circular.hpp
new file mode 100644
index 0000000..33b8ee0
--- /dev/null
+++ b/source/circular.hpp
@@ -0,0 +1,32 @@
+#ifndef CIRCULAR_HPP
+#define CIRCULAR_HPP
+
+#include <iterator>
+
+template<template<typename> class Container, typename T>
+class CircularBuffer
+{
+public:
+    CircularBuffer(Container<T>& container) :
+        m_begin(std::begin(container)),
+        m_end(std::end(container)),
+        m_current(std::begin(container)) {}
+
+    void put(const T& value) noexcept {
+        *m_current = value;
+        if (++m_current == m_end)
+            m_current = m_begin;
+    }
+
+    std::size_t size() const noexcept {
+        return std::distance(m_begin, m_end);
+    }
+
+private:
+    Container<T>::iterator m_begin;
+    Container<T>::iterator m_end;
+    Container<T>::iterator m_current;
+};
+
+#endif // CIRCULAR_HPP
+