-extern GLfloat direction0[];
-extern GLfloat light0_pos[];
-
-extern GLfloat shine;
-
-extern GLfloat glightmodel[];
-
-/* Material types */
-extern GLfloat ambient[];
-extern GLfloat diffuse[];
-extern GLfloat specular[];
+/* 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;