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2008-04-23 Emmanuele Bassi <ebassi@openedhand.com>

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Bug 892 - Incorrect results using rotation-[center|angle] properties

	* clutter/clutter-actor.c:
	(clutter_actor_set_rotation_internal): Inline function for setting
	the rotation using fixed point for the angle and units for the
	center of rotation.

	(clutter_actor_set_property),
	(clutter_actor_set_rotationx): Use the internal setter to avoid
	loss of precision and too many conversions to and from units.
This commit is contained in:
Emmanuele Bassi 2008-04-23 12:39:50 +00:00
parent 4b0a15c468
commit e1dfbec336
2 changed files with 106 additions and 56 deletions
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13
ChangeLog
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@ -1,3 +1,16 @@
2008-04-23 Emmanuele Bassi <ebassi@openedhand.com>
Bug 892 - Incorrect results using rotation-[center|angle] properties
* clutter/clutter-actor.c:
(clutter_actor_set_rotation_internal): Inline function for setting
the rotation using fixed point for the angle and units for the
center of rotation.
(clutter_actor_set_property),
(clutter_actor_set_rotationx): Use the internal setter to avoid
loss of precision and too many conversions to and from units.
2008-04-23 Emmanuele Bassi <ebassi@openedhand.com>
Bug 891 - assertion failed when test-behave exits

149
clutter/clutter-actor.c
View File

@ -1388,6 +1388,56 @@ clutter_actor_query_coords (ClutterActor *self,
}
}
/* fixed point, unit based rotation setter, to be used by
* set_property() so that we don't lose precision in the
* center coordinates by converting them to and from units
*/
static inline void
clutter_actor_set_rotation_internal (ClutterActor *self,
ClutterRotateAxis axis,
ClutterFixed angle,
ClutterUnit center_x,
ClutterUnit center_y,
ClutterUnit center_z)
{
ClutterActorPrivate *priv = self->priv;
g_object_ref (self);
g_object_freeze_notify (G_OBJECT (self));
switch (axis)
{
case CLUTTER_X_AXIS:
priv->rxang = angle;
priv->rxy = center_y;
priv->rxz = center_z;
g_object_notify (G_OBJECT (self), "rotation-angle-x");
g_object_notify (G_OBJECT (self), "rotation-center-x");
break;
case CLUTTER_Y_AXIS:
priv->ryang = angle;
priv->ryx = center_x;
priv->ryz = center_z;
g_object_notify (G_OBJECT (self), "rotation-angle-y");
g_object_notify (G_OBJECT (self), "rotation-center-y");
break;
case CLUTTER_Z_AXIS:
priv->rzang = angle;
priv->rzx = center_x;
priv->rzy = center_y;
g_object_notify (G_OBJECT (self), "rotation-angle-z");
g_object_notify (G_OBJECT (self), "rotation-center-z");
break;
}
g_object_thaw_notify (G_OBJECT (self));
g_object_unref (self);
if (CLUTTER_ACTOR_IS_VISIBLE (self))
clutter_actor_queue_redraw (self);
}
static void
clutter_actor_set_property (GObject *object,
guint prop_id,
@ -1455,22 +1505,43 @@ clutter_actor_set_property (GObject *object,
clutter_actor_set_reactive (actor, g_value_get_boolean (value));
break;
case PROP_ROTATION_ANGLE_X:
clutter_actor_set_rotation (actor,
CLUTTER_X_AXIS,
g_value_get_double (value),
0, priv->rxy, priv->rxz);
{
ClutterFixed angle;
angle = CLUTTER_FLOAT_TO_FIXED (g_value_get_double (value));
clutter_actor_set_rotation_internal (actor,
CLUTTER_X_AXIS,
angle,
0,
priv->rxy,
priv->rxz);
}
break;
case PROP_ROTATION_ANGLE_Y:
clutter_actor_set_rotation (actor,
CLUTTER_Y_AXIS,
g_value_get_double (value),
priv->ryx, 0, priv->ryz);
{
ClutterFixed angle;
angle = CLUTTER_FLOAT_TO_FIXED (g_value_get_double (value));
clutter_actor_set_rotation_internal (actor,
CLUTTER_Y_AXIS,
angle,
priv->ryx,
0,
priv->ryz);
}
break;
case PROP_ROTATION_ANGLE_Z:
clutter_actor_set_rotation (actor,
CLUTTER_Z_AXIS,
g_value_get_double (value),
priv->rzx, priv->rzy, 0);
{
ClutterFixed angle;
angle = CLUTTER_FLOAT_TO_FIXED (g_value_get_double (value));
clutter_actor_set_rotation_internal (actor,
CLUTTER_Z_AXIS,
angle,
priv->rzx,
priv->rzy,
0);
}
break;
case PROP_ROTATION_CENTER_X:
{
@ -1481,8 +1552,8 @@ clutter_actor_set_property (GObject *object,
CLUTTER_X_AXIS,
priv->rxang,
0,
CLUTTER_UNITS_TO_DEVICE (center->y),
CLUTTER_UNITS_TO_DEVICE (center->z));
center->y,
center->z);
}
break;
case PROP_ROTATION_CENTER_Y:
@ -1493,9 +1564,9 @@ clutter_actor_set_property (GObject *object,
clutter_actor_set_rotationx (actor,
CLUTTER_Y_AXIS,
priv->ryang,
CLUTTER_UNITS_TO_DEVICE (center->x),
center->x,
0,
CLUTTER_UNITS_TO_DEVICE (center->z));
center->z);
}
break;
case PROP_ROTATION_CENTER_Z:
@ -1506,8 +1577,8 @@ clutter_actor_set_property (GObject *object,
clutter_actor_set_rotationx (actor,
CLUTTER_Z_AXIS,
priv->rzang,
CLUTTER_UNITS_TO_DEVICE (center->x),
CLUTTER_UNITS_TO_DEVICE (center->y),
center->x,
center->y,
0);
}
break;
@ -3664,46 +3735,12 @@ clutter_actor_set_rotationx (ClutterActor *self,
gint y,
gint z)
{
ClutterActorPrivate *priv;
g_return_if_fail (CLUTTER_IS_ACTOR (self));
priv = self->priv;
g_object_ref (self);
g_object_freeze_notify (G_OBJECT (self));
switch (axis)
{
case CLUTTER_X_AXIS:
priv->rxang = angle;
priv->rxy = CLUTTER_UNITS_FROM_DEVICE (y);
priv->rxz = CLUTTER_UNITS_FROM_DEVICE (z);
g_object_notify (G_OBJECT (self), "rotation-angle-x");
g_object_notify (G_OBJECT (self), "rotation-center-x");
break;
case CLUTTER_Y_AXIS:
priv->ryang = angle;
priv->ryx = CLUTTER_UNITS_FROM_DEVICE (x);
priv->ryz = CLUTTER_UNITS_FROM_DEVICE (z);
g_object_notify (G_OBJECT (self), "rotation-angle-y");
g_object_notify (G_OBJECT (self), "rotation-center-y");
break;
case CLUTTER_Z_AXIS:
priv->rzang = angle;
priv->rzx = CLUTTER_UNITS_FROM_DEVICE (x);
priv->rzy = CLUTTER_UNITS_FROM_DEVICE (y);
g_object_notify (G_OBJECT (self), "rotation-angle-z");
g_object_notify (G_OBJECT (self), "rotation-center-z");
break;
}
g_object_thaw_notify (G_OBJECT (self));
g_object_unref (self);
if (CLUTTER_ACTOR_IS_VISIBLE (self))
clutter_actor_queue_redraw (self);
clutter_actor_set_rotation_internal (self, axis, angle,
CLUTTER_UNITS_FROM_DEVICE (x),
CLUTTER_UNITS_FROM_DEVICE (y),
CLUTTER_UNITS_FROM_DEVICE (z));
}
/**