Merge branch 'master' of github.com:openscad/openscad

1 files changed, 27 insertions, 0 deletions

diff --git a/src/imageutils.cc b/src/imageutils.cc
new file mode 100644
index 0000000..3e1f3bc
--- /dev/null
+++ b/src/imageutils.cc
@@ -0,0 +1,27 @@
+#include "imageutils.h"
+#include <assert.h>
+#include <string.h>
+#include <fstream>
+
+void flip_image(const unsigned char *src, unsigned char *dst, size_t pixelsize, size_t width, size_t height)
+{
+  assert( src && dst );
+  size_t rowBytes = pixelsize * width;
+  for (size_t i = 0 ; i < height ; i++) {
+    memmove(dst + (height - i - 1) * rowBytes, src + i * rowBytes, rowBytes);
+  }
+}
+
+bool write_png(const char *filename, unsigned char *pixels, int width, int height) {
+  assert( filename && pixels );
+  std::ofstream fstream( filename, std::ios::binary );
+  if (fstream.is_open()) {
+    write_png( fstream, pixels, width, height );
+    fstream.close();
+    return true;
+  } else {
+    std::cerr << "Can't open file " << filename << " for export.";
+    return false;
+  }
+}
+