Adding ue1

1 files changed, 47 insertions, 0 deletions

diff --git a/ue1/imgsynth/cpixelformat_24.cpp b/ue1/imgsynth/cpixelformat_24.cpp
new file mode 100644
index 0000000..022b592
--- /dev/null
+++ b/ue1/imgsynth/cpixelformat_24.cpp
@@ -0,0 +1,47 @@
+/**
+ * @module cpixelformat_24
+ * @author Manuel Mausz, 0728348
+ * @brief  Implementation of CPixelFormat handling 24bit color Windows Bitmaps.
+ * @date   18.04.2009
+ */
+
+#include <boost/numeric/conversion/cast.hpp>
+#include "cpixelformat_24.h"
+
+using namespace std;
+
+void CPixelFormat_24::setPixel(const uint32_t *pixel, uint32_t x, uint32_t y)
+{
+  if (m_bitmap->getPixelData() == NULL)
+    throw PixelFormatError("No pixelbuffer allocated.");
+
+  uint32_t rowsize = 4 * static_cast<uint32_t>(
+    ((CPixelFormat_24::getBitCount() * abs(m_bitmap->getInfoHeader().biWidth)) + 31) / 32
+  );
+
+  /* if height is positive the y-coordinates are mirrored */
+  if (m_bitmap->getInfoHeader().biHeight > 0)
+    y = m_bitmap->getInfoHeader().biHeight - y - 1;
+  uint32_t offset = y * rowsize + x * (4 * getBitCount() / 32);
+
+  /* boundary check */
+  if (offset + 3 * sizeof(uint8_t) > m_bitmap->getInfoHeader().biSizeImage)
+    throw PixelFormatError("Pixel position is out of range.");
+
+  /* convert color values to correct types */
+  uint8_t data[3];
+  try
+  {
+    data[0] = boost::numeric_cast<uint8_t>(pixel[2]);
+    data[1] = boost::numeric_cast<uint8_t>(pixel[1]);
+    data[2] = boost::numeric_cast<uint8_t>(pixel[0]);
+  }
+  catch(boost::numeric::bad_numeric_cast& ex)
+  {
+    throw PixelFormatError("Unable to convert pixelcolor to correct size: " + string(ex.what()));
+  }
+
+  copy(data, data + 3, m_bitmap->getPixelData() + offset);
+}
+
+/* vim: set et sw=2 ts=2: */