diff --git a/SierpinskiDA.cc b/SierpinskiDA.cc
index 371ea4d..2275418 100644
--- a/SierpinskiDA.cc
+++ b/SierpinskiDA.cc
@@ -45,7 +45,7 @@ void SierpinskiDA::regenerate(int npts)
     glBegin(GL_POINTS);
 
     double pt[3];
-    double r = rand() / RAND_MAX;
+    double r = rand() / (double) RAND_MAX;
     for (int i = 0; i < 3; i++)
     {
         pt[i] = pts[0][i] + r * pts[1][i] - pts[0][i];
@@ -89,8 +89,8 @@ bool SierpinskiDA::draw()
     gluPerspective(60, get_width()/(double)get_height(), 0.01, 1000.0);
     glMatrixMode(GL_MODELVIEW);
     glLoadIdentity();
-    gluLookAt(0, -3, 1,
-              0, 0, 0.7,
+    gluLookAt(0, -3, 1.5,
+              0, 0, 1,
               0, 0, 1);
 
     glCallList(m_dl);
@@ -134,10 +134,13 @@ void SierpinskiDA::on_realize()
 
     glViewport(0, 0, get_width(), get_height());
     m_dl = glGenLists(1);
-//    glEnable(GL_LIGHTING);
-//    glEnable(GL_LIGHT0);
-//    float color[] = {1, 1, 1, 1};
-//    glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, color);
+    glEnable(GL_DEPTH_TEST);
+#if 0
+    glEnable(GL_LIGHTING);
+    glEnable(GL_LIGHT0);
+    float color[] = {1, 1, 1, 1};
+    glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, color);
+#endif
     glColor3f(1, 1, 1);
 
     gl_end();