New C++ dmnsn_scene* wrapper and raytracexx test.

1 files changed, 4 insertions, 0 deletions

diff --git a/libdimensionxx/canvas.cpp b/libdimensionxx/canvas.cpp
index 35ff2fb..c8b3389 100644
--- a/libdimensionxx/canvas.cpp
+++ b/libdimensionxx/canvas.cpp
@@ -26,6 +26,10 @@ namespace Dimension
   Canvas::Canvas(unsigned int width, unsigned int height)
     : m_canvas(dmnsn_new_canvas(width, height)) { }
 
+  // Wrap an existing dmnsn_canvas*
+  Canvas::Canvas(dmnsn_canvas* canvas)
+    : m_canvas(canvas) { }
+
   // Virtual destructor: delete the canvas with dmnsn_delete_canvas().
   Canvas::~Canvas()
   {