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matrix: Adds matrix_copy and _free functions

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As a pre-requisite for being able to register a boxed GType for
CoglMatrix (enabling us to define gobject properties that accept a
CoglMatrix) this adds cogl_matrix_copy and _free functions.
This commit is contained in:
Robert Bragg 2010-11-29 18:47:10 +00:00
parent 3edd02841b
commit c29a7526c0
2 changed files with 42 additions and 0 deletions
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15
clutter/cogl/cogl/cogl-matrix.c
View File

@ -353,6 +353,21 @@ cogl_matrix_equal (gconstpointer v1, gconstpointer v2)
return FALSE;
}
CoglMatrix *
cogl_matrix_copy (const CoglMatrix *matrix)
{
if (G_LIKELY (matrix))
return g_slice_dup (CoglMatrix, matrix);
return NULL;
}
void
cogl_matrix_free (CoglMatrix *matrix)
{
g_slice_free (CoglMatrix, matrix);
}
const float *
cogl_matrix_get_array (const CoglMatrix *matrix)
{

27
clutter/cogl/cogl/cogl-matrix.h
View File

@ -292,6 +292,33 @@ cogl_matrix_get_array (const CoglMatrix *matrix);
gboolean
cogl_matrix_equal (gconstpointer v1, gconstpointer v2);
/**
* cogl_matrix_copy:
* @matrix: A 4x4 transformation matrix you want to copy
*
* Allocates a new #CoglMatrix on the heap and initializes it with
* the same values as @matrix.
*
* Returns: A newly allocated #CoglMatrix which should be freed using
* cogl_matrix_free()
*
* Since: 1.6
*/
CoglMatrix *
cogl_matrix_copy (const CoglMatrix *matrix);
/**
* cogl_matrix_free:
* @matrix: A 4x4 transformation matrix you want to free
*
* Frees a #CoglMatrix that was previously allocated via a call to
* cogl_matrix_copy().
*
* Since: 1.6
*/
void
cogl_matrix_free (CoglMatrix *matrix);
/**
* cogl_matrix_get_inverse:
* @matrix: A 4x4 transformation matrix