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2008-02-15 Tomas Frydrych <tf@openedhand.com>

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* clutter/clutter-actor.c:
	* clutter/clutter-actor.h:
	(clutter_group_query_coords):
	Added function to translate vertex array to a bounding box.

	(clutter_actor_is_scaled):
	(clutter_actor_is_rotated):
	Fixed documentation.
This commit is contained in:
Tomas Frydrych
2008-02-15 09:40:41 +00:00
parent 4d53cb1037
commit 78341d2e28
4 changed files with 73 additions and 46 deletions
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60
clutter/clutter-actor.c
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@ -5520,7 +5520,9 @@ clutter_actor_set_shader_param (ClutterActor *self,
* clutter_actor_is_rotated:
* @self: a #ClutterActor
*
* Returns true if any rotation is applied to the actor.
* Checks whether any rotation is applied to the actor.
*
* Return value: %TRUE if the actor is rotated.
*
* Since: 0.6
*/
@ -5543,7 +5545,9 @@ clutter_actor_is_rotated (ClutterActor *self)
* clutter_actor_is_scaled:
* @self: a #ClutterActor
*
* Returns true if the actor is scaled in either dimension.
* Checks whether the actor is scaled in either dimension.
*
* Return value: %TRUE if the actor is scaled.
*
* Since: 0.6
*/
@ -5562,3 +5566,55 @@ clutter_actor_is_scaled (ClutterActor *self)
return FALSE;
}
/**
* clutter_actor_get_box_from_vertices:
* @vtx: array of four #ClutterVertex
* @box: pointer to #ClutterActorBox where to store the result
*
* Calculates the bounding box represented by the four vertices; for details
* of the vertex array see clutter_actor_get_vertices().
*
* Since: 0.6
*/
void
clutter_actor_get_box_from_vertices (ClutterVertex vtx[4],
ClutterActorBox *box)
{
ClutterUnit x1, x2, y1, y2;
/* 4-way min/max */
x1 = vtx[0].x;
y1 = vtx[0].y;
if (vtx[1].x < x1)
x1 = vtx[1].x;
if (vtx[2].x < x1)
x1 = vtx[2].x;
if (vtx[3].x < x1)
x1 = vtx[3].x;
if (vtx[1].y < y1)
y1 = vtx[1].y;
if (vtx[2].y < y1)
y1 = vtx[2].y;
if (vtx[3].y < y1)
y1 = vtx[3].y;
x2 = vtx[0].x;
y2 = vtx[0].y;
if (vtx[1].x > x2)
x2 = vtx[1].x;
if (vtx[2].x > x2)
x2 = vtx[2].x;
if (vtx[3].x > x2)
x2 = vtx[3].x;
if (vtx[1].y > y2)
y2 = vtx[1].y;
if (vtx[2].y > y2)
y2 = vtx[2].y;
if (vtx[3].y > y2)
y2 = vtx[3].y;
box->x1 = x1;
box->x2 = x2;
box->y1 = y1;
box->y2 = y2;
}