From 1b77e953067ce43515e96f99ecafa2ea468a60bc Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@gmail.com>
Date: Mon, 28 Jun 2010 11:18:13 -0600
Subject: Don't make a degenerate sphere in transformations.pov.

---
 libdimension/geometry.c             | 10 +++++-----
 tests/dimension/transformations.pov |  2 +-
 tests/dimension/transformations.sh  |  2 +-
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/libdimension/geometry.c b/libdimension/geometry.c
index 5d14953..26ca628 100644
--- a/libdimension/geometry.c
+++ b/libdimension/geometry.c
@@ -140,11 +140,11 @@ dmnsn_matrix_inverse(dmnsn_matrix A)
 
   if (Pdet == 0.0) {
     /* If we can't invert P, try a more generic algorithm; this is very
-       unlikely, but not impossible, eg.
-         ( 1 1 0 0 )
-         ( 1 1 1 0 )
-         ( 0 1 1 0 )
-         ( 0 0 0 1 )
+     * unlikely, but not impossible, eg.
+     *   [ 1 1 0 0 ]
+     *   [ 1 1 1 0 ]
+     *   [ 0 1 1 0 ]
+     *   [ 0 0 0 1 ]
      */
     return dmnsn_matrix_inverse_generic(A);
   }
diff --git a/tests/dimension/transformations.pov b/tests/dimension/transformations.pov
index 4b56c3f..f7a31fe 100644
--- a/tests/dimension/transformations.pov
+++ b/tests/dimension/transformations.pov
@@ -22,7 +22,7 @@
 #declare Trans = transform { translate 1*z }
 
 sphere {
-  0, 0
+  0, 1
   translate -1*x
   rotate 90*y
   scale 2
diff --git a/tests/dimension/transformations.sh b/tests/dimension/transformations.sh
index 65f8b1b..462dbeb 100755
--- a/tests/dimension/transformations.sh
+++ b/tests/dimension/transformations.sh
@@ -24,7 +24,7 @@ transformations_exp="$(echo -n \
 '((object
     (sphere
       (vector (integer 0) (integer 0) (integer 0) (integer 0) (integer 0))
-      (integer 0))
+      (integer 1))
     (object-modifiers
       (transformation
         (translation
-- 
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