trac-2035 -- transform.pyx broken by other fixes.

src/sage/plot/plot3d/transform.pyx

@@ -210,9 +210,10 @@ def rotate_arbitrary(v, double theta):
             sage: m = rotX(-t) * m
             sage: m = m.simplify_rational()
             sage: m
-            [                                       (1 - cos(theta))*x^2 + cos(theta) (-sin(theta)*abs(z)^3 - (cos(theta) - 1)*x*z^2*sqrt(-z^2 - x^2 + 1))/z^2  (sin(theta)*sqrt(-z^2 - x^2 + 1)*abs(z)^3 + (1 - cos(theta))*x*z^4)/z^3]
-            [             sin(theta)*abs(z) + (1 - cos(theta))*x*sqrt(-z^2 - x^2 + 1)                          (cos(theta) - 1)*z^2 + (cos(theta) - 1)*x^2 + 1     (-sin(theta)*x*abs(z) - (cos(theta) - 1)*z^2*sqrt(-z^2 - x^2 + 1))/z]
-            [    (-sin(theta)*sqrt(-z^2 - x^2 + 1)*abs(z) - (cos(theta) - 1)*x*z^2)/z      (sin(theta)*x*abs(z) - (cos(theta) - 1)*z^2*sqrt(-z^2 - x^2 + 1))/z                                        (1 - cos(theta))*z^2 + cos(theta)]
+            [                                              (1 - cos(theta))*x^2 + cos(theta)                  (1 - cos(theta))*x*sqrt(-z^2 - x^2 + 1) - sin(theta)*sqrt(z^2)          (sin(theta)*sqrt(-z^2 - x^2 + 1)*sqrt(z^2) + (1 - cos(theta))*x*z^2)/z]
+            [                 sin(theta)*sqrt(z^2) + (1 - cos(theta))*x*sqrt(-z^2 - x^2 + 1)                                 (cos(theta) - 1)*z^2 + (cos(theta) - 1)*x^2 + 1 (-(cos(theta) - 1)*z*sqrt(-z^2 - x^2 + 1)*sqrt(z^2) - sin(theta)*x*z)/sqrt(z^2)]
+            [        (-sin(theta)*sqrt(-z^2 - x^2 + 1)*sqrt(z^2) - (cos(theta) - 1)*x*z^2)/z  (sin(theta)*x*z - (cos(theta) - 1)*z*sqrt(-z^2 - x^2 + 1)*sqrt(z^2))/sqrt(z^2)                                               (1 - cos(theta))*z^2 + cos(theta)]
+
 
         Re-expressing some entries in terms of y and resolving the absolute
         values introduced by eliminating y, we get the desired result.