-static GLfloat viewer[] = {0.0, 0.0, 30.0};
-static GLfloat lookat[] = {0.0, 0.0, 0.0};
-static GLfloat lightpos[] = {7.0, 7.0, 12, 1.0};
-GLfloat light_sp[] = {0.8, 0.8, 0.8, 0.5};
-static GLfloat red[] = {1.0, 0, 0, 1.0};
-static GLfloat green[] = {0.0, 1, 0, 1.0};
-static GLfloat blue[] = {0, 0, 1, 1.0};
-static GLfloat white[] = {1.0, 1, 1, 1.0};
-static GLfloat yellow_t[] = {1, 1, 0, 0.4};
+static const GLfloat lightpos[] = {7.0, 7.0, 12, 1.0};
+static const GLfloat light_sp[] = {0.8, 0.8, 0.8, 0.5};
+static const GLfloat red[] = {1.0, 0, 0, 1.0};
+static const GLfloat green[] = {0.0, 1, 0, 1.0};
+static const GLfloat blue[] = {0, 0, 1, 1.0};
+static const GLfloat white[] = {1.0, 1, 1, 1.0};
+static const GLfloat yellow_t[] = {1, 1, 0, 0.4};