Add initializer utilities for ClutterVertex

Similar to what we did for ClutterActorBox.

clutter/clutter-actor.c

@@ -13297,11 +13297,33 @@ clutter_vertex_new (gfloat x,
   ClutterVertex *vertex;
 
   vertex = g_slice_new (ClutterVertex);
+  clutter_vertex_init (vertex, x, y, z);
+
+  return vertex;
+}
+
+/**
+ * clutter_vertex_init:
+ * @vertex: a #ClutterVertex
+ * @x: X coordinate
+ * @y: Y coordinate
+ * @z: Z coordinate
+ *
+ * Initializes @vertex with the given coordinates.
+ *
+ * Since: 1.10
+ */
+void
+clutter_vertex_init (ClutterVertex *vertex,
+                     gfloat         x,
+                     gfloat         y,
+                     gfloat         z)
+{
+  g_return_if_fail (vertex != NULL);
+
   vertex->x = x;
   vertex->y = y;
   vertex->z = z;
-
-  return vertex;
 }
 
 /**

clutter/clutter-types.h

@@ -122,10 +122,30 @@ struct _ClutterVertex
   gfloat z;
 };
 
+/**
+ * CLUTTER_VERTEX_INIT:
+ * @x: the X coordinate of the vertex
+ * @y: the Y coordinate of the vertex
+ * @z: the Z coordinate of the vertex
+ *
+ * A simple macro for initializing a #ClutterVertex when declaring it, e.g.:
+ *
+ * |[
+ *   ClutterVertext v = CLUTTER_VERTEX_INIT (x, y, z);
+ * ]|
+ *
+ * Since: 1.10
+ */
+#define CLUTTER_VERTEX_INIT(x,y,z)      { (x), (y), (z) }
+
 GType          clutter_vertex_get_type (void) G_GNUC_CONST;
 ClutterVertex *clutter_vertex_new      (gfloat               x,
                                         gfloat               y,
                                         gfloat               z);
+void           clutter_vertex_init     (ClutterVertex       *vertex,
+                                        gfloat               x,
+                                        gfloat               y,
+                                        gfloat               z);
 ClutterVertex *clutter_vertex_copy     (const ClutterVertex *vertex);
 void           clutter_vertex_free     (ClutterVertex       *vertex);
 gboolean       clutter_vertex_equal    (const ClutterVertex *vertex_a,

clutter/clutter.symbols

@@ -1413,6 +1413,7 @@ clutter_vertex_copy
 clutter_vertex_equal
 clutter_vertex_free
 clutter_vertex_get_type
+clutter_vertex_init
 clutter_vertex_new
 #ifdef CLUTTER_WINDOWING_WAYLAND
 clutter_wayland_get_egl_display

doc/reference/clutter/clutter-sections.txt

@@ -546,7 +546,9 @@ clutter_actor_box_union
 
 <SUBSECTION>
 ClutterVertex
+CLUTTER_VERTEX_INIT
 clutter_vertex_new
+clutter_vertex_init
 clutter_vertex_copy
 clutter_vertex_free
 clutter_vertex_equal