Tidied up example/static test executables

GCryptLib/exec/Visualize.h

@@ -0,0 +1,58 @@
+#ifndef GCRYPTEXAMPLE_VISUALIZE_H
+#define GCRYPTEXAMPLE_VISUALIZE_H
+
+#include <GCrypt/Block.h>
+#include <BmpPP/Bmp.h>
+#include <string>
+
+using namespace Leonetienne::GCrypt;
+using namespace Leonetienne::Eule;
+using namespace Leonetienne::BmpPP;
+
+void VisualizeBlock(const Block& block, const std::string& name) {
+  BMP bmp(Vector2i(32, 16), Colormode::RGB);
+
+  std::size_t i = 0;
+  for (std::size_t x = 0; x < bmp.GetDimensions().x; x++)
+  for (std::size_t y = 0; y < bmp.GetDimensions().y; y++) {
+    const std::uint8_t pixel = block.GetBit(i) == false ? 255 : 0;
+    bmp.SetPixel(Vector2i(x, y), pixel);
+
+    i++;
+  }
+
+  bmp.Write(name);
+
+  return;
+}
+
+// size.x*size.y MUST equal blocks.size() * Block::BLOCK_SIZE_BITS. That should be, by defalt blocks.size * 512.
+void VisualizeBlocks(const std::vector<Block>& blocks, const Vector2i& size, const std::string& name) {
+
+  //! A bit of error checking...
+  if (size.x*size.y != blocks.size() * Block::BLOCK_SIZE_BITS) {
+    throw std::invalid_argument("Supplied unfitting widht/height for visualization. Does not fit bits!");
+  }
+
+  BMP bmp(size, Colormode::RGB);
+
+  std::size_t i = 0;
+  for (std::size_t x = 0; x < bmp.GetDimensions().x; x++)
+  for (std::size_t y = 0; y < bmp.GetDimensions().y; y++) {
+
+    const std::size_t blockIndex = i / Block::BLOCK_SIZE_BITS;
+    const std::size_t relBitIndex = i - blockIndex * Block::BLOCK_SIZE_BITS;
+
+    const std::uint8_t pixel = blocks[blockIndex].GetBit(relBitIndex) == false ? 255 : 0;
+    bmp.SetPixel(Vector2i(x, y), pixel);
+
+    i++;
+  }
+
+  bmp.Write(name);
+
+  return;
+}
+
+#endif
+