36 files changed, 332 insertions, 176 deletions

diff --git a/src/controller/callbacks/mouse_wheel.h b/src/controller/callbacks/mouse_wheel.h
new file mode 100644
index 0000000..8f6a57d
--- a/dev/null
+++ b/src/controller/callbacks/mouse_wheel.h
@@ -0,0 +1,11 @@
+#ifndef MOUSE_WHEEL_H
+#define MOUSE_WHEEL_H
+
+/*
+ * GLUT callback to be called whenever the scroll wheel is scrolled.
+ * Based on code from Ashwin at
+ * http://stackoverflow.com/questions/14378/using-the-mouse-scrollwheel-in-glut/14444.
+ */
+void mouse_wheel (int, int, int, int);
+
+#endif // MOUSE_WHEEL_H