Added simple bitmap interface

src/bitmap/bitmap.hpp

@@ -0,0 +1,47 @@
+#pragma once
+
+#include <iostream>
+#include <cstdint>
+#include <vector>
+#include <tuple>
+
+class Bitmap {
+	public:
+		Bitmap(size_t w, size_t h);
+
+
+		void clear();
+		void setpixel(
+			size_t row,
+			size_t col,
+			uint8_t r,
+			uint8_t g,
+			uint8_t b
+		);
+
+		void save(const char *filename) const;
+
+	private:
+		size_t width;
+		size_t height;
+
+		// Pixel data.
+		// First is a vector of rows,
+		// Second is a vector of pixels.
+		// RGB format.
+		std::vector<
+			std::vector<
+			std::tuple<
+				uint8_t,
+				uint8_t,
+				uint8_t
+			>>
+		> data;
+
+		static void dump_int_to_bytes(
+			uint64_t a,
+			uint8_t* bytes,
+			size_t index,
+			size_t num_bytes
+		);
+};