-/* Light 0 parameters */
-extern GLfloat diffuse0[];
-extern GLfloat ambient0[];
-extern GLfloat specular0[];
-extern GLfloat emission0[];
-extern GLfloat light0_pos[];
-extern GLfloat glightmodel[];
+/* Zoom and rotate tracking */
+extern GLfloat zoom, rotate, camAngle;
+extern GLfloat zoomFactor, camRotateFactor, camAngleFactor;
+extern GLfloat leftrightFactor, nearfarFactor, bigsmallFactor;
+extern GLfloat updownFactor, rotateFactor, texscaleFactor;
+extern GLfloat lleftrightFactor, lnearfarFactor;