From 892a5bee9691e9566a5cf6b996f55c0b6ab14747 Mon Sep 17 00:00:00 2001
From: Ash Tyndall <git@atyndall.net>
Date: Fri, 21 Oct 2011 10:59:02 +0800
Subject: [PATCH]

---
 scene.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/scene.c b/scene.c
index 7d45bbf..34b7462 100644
--- a/scene.c
+++ b/scene.c
@@ -298,8 +298,13 @@ void display() {
   glMatrixMode(GL_MODELVIEW);
   glLoadIdentity();
 
+  GLfloat zcoord = 5.0 + (zoomFactor*0.2);
+  if ( zcoord < 0.0 ) {
+    zcoord = 0.0;
+  }
+
   gluLookAt(
-    0.0,  0.0,  5.0 + (zoomFactor*0.2),  /* eye is at (x,y,z) */
+    0.0,  0.0,  zcoord,  /* eye is at (x,y,z) */
     0.0,  0.0,  0.0,  /* center is at (x,y,z) */
     0.0,  1.0,  0.0   /* up is in postivie Y direction */
     );
-- 
2.20.1