math: Adds an experimental quaternion API

This adds an experimental quaternion utility API. It's not yet fully
documented but it's complete enough that people can start to experiment
with using it. It adds the following functions:

    cogl_quaternion_init_identity
    cogl_quaternion_init
    cogl_quaternion_init_from_angle_vector
    cogl_quaternion_init_from_array
    cogl_quaternion_init_from_x_rotation
    cogl_quaternion_init_from_y_rotation
    cogl_quaternion_init_from_z_rotation
    cogl_quaternion_equal
    cogl_quaternion_copy
    cogl_quaternion_free
    cogl_quaternion_get_rotation_angle
    cogl_quaternion_get_rotation_axis
    cogl_quaternion_normalize
    cogl_quaternion_dot_product
    cogl_quaternion_invert
    cogl_quaternion_multiply
    cogl_quaternion_pow
    cogl_quaternion_slerp
    cogl_quaternion_nlerp
    cogl_quaternion_squad
    cogl_get_static_identity_quaternion
    cogl_get_static_zero_quaternion

Since it's experimental API you'll need to define
COGL_ENABLE_EXPERIMENTAL_API before including cogl.h.

1 files changed, 9 insertions, 0 deletions

diff --git a/cogl/cogl-matrix.c b/cogl/cogl-matrix.c
index 625b89f6..6e45d1db 100644
--- a/cogl/cogl-matrix.c
+++ b/cogl/cogl-matrix.c
@@ -32,6 +32,8 @@
 
 #include <cogl.h>
 #include "cogl-debug.h"
+#include <cogl-quaternion.h>
+#include <cogl-quaternion-private.h>
 #include <cogl-matrix.h>
 #include <cogl-matrix-private.h>
 #ifdef USE_MESA_MATRIX_API
@@ -74,6 +76,13 @@ cogl_matrix_init_identity (CoglMatrix *matrix)
 }
 
 void
+cogl_matrix_init_from_quaternion (CoglMatrix *matrix,
+                                  CoglQuaternion *quaternion)
+{
+  _math_matrix_init_from_quaternion (matrix, quaternion);
+}
+
+void
 cogl_matrix_multiply (CoglMatrix *result,
 		      const CoglMatrix *a,
 		      const CoglMatrix *b)