[cogl] Remove padding from eulers and quaternions

[Robert Bragg <rbragg src gnome org>]

commit 88018b90361215ec33fa317a2c3caf54beffbffa
Author: Robert Bragg <robert linux intel com>
Date:   Mon Oct 14 18:07:31 2013 +0100

    Remove padding from eulers and quaternions
    
    One of the notable advantages of a Euler representation of a rotation is
    that it is compact but we negate that benefit if all CoglEulers have
    enough padding to potentially cache a quaternion in the future. Having
    padding for all CoglQuaternions is probably also unnecessary as higher
    level code can find its own ways of caching data relating to
    quaternions.
    
    Reviewed-by: Neil Roberts <neil linux intel com>

 cogl/cogl-euler.h      |   10 +---------
 cogl/cogl-quaternion.h |    8 +-------
 2 files changed, 2 insertions(+), 16 deletions(-)
---
diff --git a/cogl/cogl-euler.h b/cogl/cogl-euler.h
index bf526d7..c73cc81 100644
--- a/cogl/cogl-euler.h
+++ b/cogl/cogl-euler.h
@@ -146,16 +146,8 @@ struct _CoglEuler
   float heading;
   float pitch;
   float roll;
-
-  /*< private > */
-  /* May cached a quaternion here in the future */
-  float padding0;
-  float padding1;
-  float padding2;
-  float padding3;
-  float padding4;
 };
-COGL_STRUCT_SIZE_ASSERT (CoglEuler, 32);
+COGL_STRUCT_SIZE_ASSERT (CoglEuler, 12);
 
 /**
  * cogl_euler_init:
diff --git a/cogl/cogl-quaternion.h b/cogl/cogl-quaternion.h
index 02be22e..5db274c 100644
--- a/cogl/cogl-quaternion.h
+++ b/cogl/cogl-quaternion.h
@@ -128,14 +128,8 @@ struct _CoglQuaternion
   float x;
   float y;
   float z;
-
-  /*< private >*/
-  float padding0;
-  float padding1;
-  float padding2;
-  float padding3;
 };
-COGL_STRUCT_SIZE_ASSERT (CoglQuaternion, 32);
+COGL_STRUCT_SIZE_ASSERT (CoglQuaternion, 16);
 
 /**
  * cogl_quaternion_init: