2006-10-23 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-alpha.h:
* clutter/clutter-behaviour.c:
* clutter/clutter-behaviour.h:
* clutter/clutter-behaviours.c:
* clutter/clutter-behaviours.h:
* examples/behave.c:
Behaviours now only 'driven' by ClutterAlpha, not any object/prop.
Add simple Clutter path behaviour.
This commit is contained in:
Matthew Allum
parent
e9cceac1ee
commit
ddab271272
11
ChangeLog
11
ChangeLog
@ -1,3 +1,14 @@
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2006-10-23 Matthew Allum <mallum@openedhand.com>
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* clutter/clutter-alpha.h:
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* clutter/clutter-behaviour.c:
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* clutter/clutter-behaviour.h:
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* clutter/clutter-behaviours.c:
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* clutter/clutter-behaviours.h:
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* examples/behave.c:
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Behaviours now only 'driven' by ClutterAlpha, not any object/prop.
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Add simple Clutter path behaviour.
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2006-10-03 Matthew Allum <mallum@openedhand.com>
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* configure.ac:
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@ -80,8 +80,11 @@ struct _ClutterAlphaClass
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void (*_clutter_alpha_5) (void);
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};
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#define CLUTTER_ALPHA_MAX_ALPHA 0xffff
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GType clutter_alpha_get_type (void) G_GNUC_CONST;
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ClutterAlpha *
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clutter_alpha_new (ClutterTimeline *timeline,
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ClutterAlphaFunc func);
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@ -33,31 +33,26 @@
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#include "clutter-actor.h"
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#include "clutter-behaviour.h"
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#include "clutter-marshal.h"
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G_DEFINE_TYPE (ClutterBehaviour, clutter_behaviour, G_TYPE_OBJECT);
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struct ClutterBehaviourPrivate
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{
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GObject *object;
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GParamSpec *param_spec;
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guint notify_id;
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GSList *actors;
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ClutterAlpha *alpha;
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guint notify_id;
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GSList *actors;
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};
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enum
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{
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PROP_0,
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PROP_OBJECT,
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PROP_PROPERTY
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PROP_ALPHA
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};
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enum {
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SIGNAL_PROPERTY_CHANGE,
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SIGNAL_LAST
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};
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static guint signals[SIGNAL_LAST];
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#define CLUTTER_BEHAVIOUR_GET_PRIVATE(obj) \
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(G_TYPE_INSTANCE_GET_PRIVATE ((obj), \
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@ -73,7 +68,7 @@ _clutter_behaviour_dispose (GObject *object)
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{
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/* FIXME: remove all actors */
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clutter_behaviour_set_object (self, NULL);
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clutter_behaviour_set_alpha (self, NULL);
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}
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G_OBJECT_CLASS (clutter_behaviour_parent_class)->dispose (object);
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@ -105,11 +100,8 @@ _clutter_behaviour_set_property (GObject *object,
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switch (prop_id)
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{
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case PROP_OBJECT:
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clutter_behaviour_set_object (behaviour, g_value_get_object (value));
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break;
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case PROP_PROPERTY:
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clutter_behaviour_set_property (behaviour, g_value_get_string (value));
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case PROP_ALPHA:
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clutter_behaviour_set_alpha (behaviour, g_value_get_object (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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@ -131,11 +123,8 @@ _clutter_behaviour_get_property (GObject *object,
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switch (prop_id)
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{
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case PROP_OBJECT:
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g_value_set_object (value, priv->object);
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break;
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case PROP_PROPERTY:
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g_value_set_string (value, priv->param_spec->name);
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case PROP_ALPHA:
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g_value_set_object (value, priv->alpha);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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@ -157,31 +146,13 @@ clutter_behaviour_class_init (ClutterBehaviourClass *klass)
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object_class->get_property = _clutter_behaviour_get_property;
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g_object_class_install_property
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(object_class, PROP_OBJECT,
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g_param_spec_object ("object",
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"Object",
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"Object whose property to monitor",
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G_TYPE_OBJECT,
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(object_class, PROP_ALPHA,
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g_param_spec_object ("alpha",
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"Alpha",
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"Alpha Object to drive the behaviour",
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CLUTTER_TYPE_ALPHA,
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G_PARAM_CONSTRUCT | G_PARAM_READWRITE));
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g_object_class_install_property
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(object_class, PROP_PROPERTY,
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g_param_spec_string ("property",
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"Property",
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"Property to monitor",
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NULL,
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G_PARAM_CONSTRUCT | G_PARAM_READWRITE));
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signals[SIGNAL_PROPERTY_CHANGE] =
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g_signal_new ("property-change",
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G_TYPE_FROM_CLASS (object_class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (ClutterBehaviourClass, property_change),
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NULL, NULL,
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clutter_marshal_VOID__OBJECT_POINTER,
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G_TYPE_NONE,
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2, G_TYPE_OBJECT, G_TYPE_POINTER);
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g_type_class_add_private (object_class, sizeof (ClutterBehaviourPrivate));
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}
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@ -246,54 +217,10 @@ clutter_behaviour_actors_foreach (ClutterBehaviour *behave,
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g_slist_foreach (behave->priv->actors, func, userdata);
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}
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GObject*
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clutter_behaviour_get_object (ClutterBehaviour *behave)
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ClutterAlpha*
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clutter_behaviour_get_alpha (ClutterBehaviour *behave)
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{
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return behave->priv->object;
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}
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void
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clutter_behaviour_set_object (ClutterBehaviour *behave,
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GObject *object)
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{
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ClutterBehaviourPrivate *priv;
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const char *property;
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priv = CLUTTER_BEHAVIOUR_GET_PRIVATE(behave);
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if (priv->object)
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{
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property = clutter_behaviour_get_property (behave);
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clutter_behaviour_set_property (behave, NULL);
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g_object_unref(priv->object);
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priv->object = NULL;
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}
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else
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property = NULL;
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if (object)
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{
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priv->object = g_object_ref(object);
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if (property)
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clutter_behaviour_set_property (behave, property);
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}
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}
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const char *
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clutter_behaviour_get_property (ClutterBehaviour *behave)
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{
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if (behave->priv->param_spec)
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return behave->priv->param_spec->name;
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else
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return NULL;
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}
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GParamSpec *
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clutter_behaviour_get_param_spec (ClutterBehaviour *behave)
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{
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return behave->priv->param_spec;
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return behave->priv->alpha;
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}
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static void
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@ -301,47 +228,39 @@ notify_cb (GObject *object,
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GParamSpec *param_spec,
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ClutterBehaviour *behave)
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{
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g_signal_emit (behave,
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signals[SIGNAL_PROPERTY_CHANGE],
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0,
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object,
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param_spec);
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ClutterBehaviourClass *class;
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class = CLUTTER_BEHAVIOUR_GET_CLASS(behave);
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if (class->alpha_notify)
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class->alpha_notify (behave);
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}
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void
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clutter_behaviour_set_property (ClutterBehaviour *behave,
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const char *property)
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clutter_behaviour_set_alpha (ClutterBehaviour *behave,
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ClutterAlpha *alpha)
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{
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g_return_if_fail (behave->priv->object);
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if (behave->priv->notify_id)
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{
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g_signal_handler_disconnect (behave->priv->object,
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g_signal_handler_disconnect (behave->priv->alpha,
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behave->priv->notify_id);
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behave->priv->notify_id = 0;
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}
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behave->priv->param_spec = NULL;
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if (property)
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if (behave->priv->alpha)
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{
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guint signal_id;
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GClosure *closure;
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g_object_unref (behave->priv->alpha);
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behave->priv->alpha = NULL;
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}
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behave->priv->param_spec =
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g_object_class_find_property (G_OBJECT_GET_CLASS (behave->priv->object),
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property);
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g_return_if_fail (behave->priv->param_spec);
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if (alpha)
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{
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behave->priv->alpha = alpha;
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g_object_ref (behave->priv->alpha);
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signal_id = g_signal_lookup ("notify",
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G_OBJECT_TYPE (behave->priv->object));
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closure = g_cclosure_new ((GCallback) notify_cb, behave, NULL);
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behave->priv->notify_id =
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g_signal_connect_closure_by_id (behave->priv->object,
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signal_id,
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g_quark_from_string (property),
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closure,
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FALSE);
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behave->priv->notify_id = g_signal_connect (behave->priv->alpha,
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"notify::alpha",
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G_CALLBACK(notify_cb),
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behave);
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}
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}
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@ -2,6 +2,7 @@
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#define _HAVE_CLUTTER_BEHAVIOUR_H
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#include <glib-object.h>
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#include "clutter-alpha.h"
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G_BEGIN_DECLS
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@ -41,9 +42,7 @@ struct _ClutterBehaviourClass
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{
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GObjectClass parent_class;
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void (* property_change) (ClutterBehaviour *behave,
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GObject *object,
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GParamSpec *param_spec);
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void (*alpha_notify) (ClutterBehaviour *behave);
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};
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GType clutter_behaviour_get_type (void);
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@ -66,22 +65,12 @@ clutter_behaviour_actors_foreach (ClutterBehaviour *behave,
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GFunc func,
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gpointer userdata);
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void
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clutter_behaviour_set_object (ClutterBehaviour *behave,
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GObject *object);
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GObject*
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clutter_behaviour_get_object (ClutterBehaviour *behave);
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ClutterAlpha*
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clutter_behaviour_get_alpha (ClutterBehaviour *behave);
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void
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clutter_behaviour_set_property (ClutterBehaviour *behave,
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const char *property);
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const char*
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clutter_behaviour_get_property (ClutterBehaviour *behave);
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GParamSpec*
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clutter_behaviour_get_param_spec (ClutterBehaviour *behave);
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clutter_behaviour_set_alpha (ClutterBehaviour *behave,
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ClutterAlpha *alpha);
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G_END_DECLS
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@ -37,13 +37,50 @@
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#include "clutter-enum-types.h"
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#include "clutter-main.h"
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#include <math.h>
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static ClutterKnot *
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clutter_knot_copy (const ClutterKnot *knot)
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{
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ClutterKnot *copy;
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copy = g_slice_new0 (ClutterKnot);
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*copy = *knot;
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return copy;
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}
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static void
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clutter_knot_free (ClutterKnot *knot)
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{
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if (G_LIKELY (knot))
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{
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g_slice_free (ClutterKnot, knot);
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}
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}
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GType
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clutter_knot_get_type (void)
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{
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static GType our_type = 0;
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if (G_UNLIKELY (!our_type))
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our_type = g_boxed_type_register_static
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("ClutterKnot",
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(GBoxedCopyFunc) clutter_knot_copy,
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(GBoxedFreeFunc) clutter_knot_free);
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return our_type;
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}
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G_DEFINE_TYPE (ClutterBehaviourPath, \
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clutter_behaviour_path, \
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CLUTTER_TYPE_BEHAVIOUR);
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struct ClutterBehaviourPathPrivate
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{
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gint x1, y1, x2, y2;
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GSList *knots;
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};
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#define CLUTTER_BEHAVIOUR_PATH_GET_PRIVATE(obj) \
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@ -51,6 +88,9 @@ struct ClutterBehaviourPathPrivate
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CLUTTER_TYPE_BEHAVIOUR_PATH, \
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ClutterBehaviourPathPrivate))
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static void
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clutter_behaviour_path_alpha_notify (ClutterBehaviour *behave);
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static void
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clutter_behaviour_path_dispose (GObject *object)
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{
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@ -58,7 +98,7 @@ clutter_behaviour_path_dispose (GObject *object)
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if (self->priv)
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{
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/* FIXME: remove all actors */
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/* FIXME: unref knots */
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}
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G_OBJECT_CLASS (clutter_behaviour_path_parent_class)->dispose (object);
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@ -82,13 +122,17 @@ clutter_behaviour_path_finalize (GObject *object)
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static void
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clutter_behaviour_path_class_init (ClutterBehaviourPathClass *klass)
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{
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GObjectClass *object_class;
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GObjectClass *object_class;
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ClutterBehaviourClass *behave_class;
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object_class = (GObjectClass*) klass;
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behave_class = (ClutterBehaviourClass*) klass;
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object_class->finalize = clutter_behaviour_path_finalize;
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object_class->dispose = clutter_behaviour_path_dispose;
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behave_class->alpha_notify = clutter_behaviour_path_alpha_notify;
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g_type_class_add_private (object_class, sizeof (ClutterBehaviourPathPrivate));
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}
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@ -100,48 +144,218 @@ clutter_behaviour_path_init (ClutterBehaviourPath *self)
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self->priv = priv = CLUTTER_BEHAVIOUR_PATH_GET_PRIVATE (self);
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}
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/*
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static void
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interpolate (const ClutterKnot *begin,
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const ClutterKnot *end,
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ClutterKnot *out,
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double t)
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{
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/* FIXME: fixed point */
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out->x = begin->x + t * (end->x - begin->x);
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out->y = begin->y + t * (end->y - begin->y);
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}
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function line(x0, x1, y0, y1)
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boolean steep := abs(y1 - y0) > abs(x1 - x0)
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if steep then
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swap(x0, y0)
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swap(x1, y1)
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if x0 > x1 then
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swap(x0, x1)
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swap(y0, y1)
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int deltax := x1 - x0
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int deltay := abs(y1 - y0)
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int error := 0
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int ystep
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int y := y0
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if y0 < y1 then ystep := 1 else ystep := -1
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for x from x0 to x1
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if steep then plot(y,x) else plot(x,y)
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error := error + deltay
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if 2
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static gint
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node_distance (const ClutterKnot *begin, const ClutterKnot *end)
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{
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g_return_val_if_fail (begin != NULL, 0);
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g_return_val_if_fail (end != NULL, 0);
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*/
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/* FIXME: need fixed point here */
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return sqrt ((end->x - begin->x) * (end->x - begin->x) +
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(end->y - begin->y) * (end->y - begin->y));
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}
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static gint
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path_total_length (ClutterBehaviourPath *behave)
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{
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GSList *l;
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gint len = 0;
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for (l = behave->priv->knots; l != NULL; l = l->next)
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if (l->next)
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len += node_distance (l->data, l->next->data);
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return len;
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}
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static void
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actor_apply_knot_foreach (ClutterActor *actor,
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ClutterKnot *knot)
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{
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clutter_actor_set_position (actor, knot->x, knot->y);
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}
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static void
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path_alpha_to_position (ClutterBehaviourPath *behave)
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{
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guint32 alpha;
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GSList *l;
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gint total_len, offset, dist_to_next, dist = 0;
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/* FIXME: Optimise. Much of the data used here can be pre-generated
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* ( total_len, dist between knots ) when knots are added/removed.
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*/
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/* Calculation as follows:
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* o Get total length of path
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* o Find the offset on path where alpha val corresponds to
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* o Figure out between which knots this offset lies.
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* o Interpolate new co-ords via dist between these knots
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* o Apply to actors.
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*/
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alpha = clutter_alpha_get_alpha
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(clutter_behaviour_get_alpha (CLUTTER_BEHAVIOUR(behave)));
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total_len = path_total_length (behave);
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offset = (alpha * total_len) / CLUTTER_ALPHA_MAX_ALPHA;
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if (offset == 0)
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{
|
||||
clutter_behaviour_actors_foreach (CLUTTER_BEHAVIOUR(behave),
|
||||
(GFunc)actor_apply_knot_foreach,
|
||||
behave->priv->knots->data);
|
||||
return;
|
||||
}
|
||||
|
||||
for (l = behave->priv->knots; l != NULL; l = l->next)
|
||||
if (l->next)
|
||||
{
|
||||
dist_to_next = node_distance (l->data, l->next->data);
|
||||
|
||||
if (offset >= dist && offset < (dist + dist_to_next))
|
||||
{
|
||||
ClutterKnot new;
|
||||
double t;
|
||||
|
||||
/* FIXME: Use fixed */
|
||||
t = (double)(offset - dist) / dist_to_next ;
|
||||
|
||||
interpolate (l->data, l->next->data, &new, t);
|
||||
|
||||
clutter_behaviour_actors_foreach (CLUTTER_BEHAVIOUR(behave),
|
||||
(GFunc)actor_apply_knot_foreach,
|
||||
&new);
|
||||
return;
|
||||
}
|
||||
|
||||
dist += dist_to_next;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
clutter_behaviour_path_alpha_notify (ClutterBehaviour *behave)
|
||||
{
|
||||
path_alpha_to_position (CLUTTER_BEHAVIOUR_PATH(behave));
|
||||
}
|
||||
|
||||
ClutterBehaviour*
|
||||
clutter_behaviour_path_new (GObject *object,
|
||||
const char *property,
|
||||
gint x1,
|
||||
gint y1,
|
||||
gint x2,
|
||||
gint y2)
|
||||
clutter_behaviour_path_new (ClutterAlpha *alpha,
|
||||
const ClutterKnot *knots,
|
||||
guint n_knots)
|
||||
{
|
||||
ClutterBehaviourPath *behave;
|
||||
|
||||
gint i;
|
||||
|
||||
behave = g_object_new (CLUTTER_TYPE_BEHAVIOUR_PATH,
|
||||
"object", object,
|
||||
"property", property,
|
||||
"alpha", alpha,
|
||||
NULL);
|
||||
|
||||
for (i = 0; i < n_knots; i++)
|
||||
{
|
||||
ClutterKnot knot = knots[i];
|
||||
clutter_path_behaviour_append_knot (behave, &knot);
|
||||
}
|
||||
|
||||
return CLUTTER_BEHAVIOUR(behave);
|
||||
}
|
||||
|
||||
/* opacity */
|
||||
GSList*
|
||||
clutter_path_behaviour_get_knots (ClutterBehaviourPath *behave)
|
||||
{
|
||||
GSList *retval, *l;
|
||||
|
||||
g_return_val_if_fail (CLUTTER_IS_BEHAVIOUR_PATH (behave), NULL);
|
||||
|
||||
retval = NULL;
|
||||
for (l = behave->priv->knots; l != NULL; l = l->next)
|
||||
retval = g_slist_prepend (retval, l->data);
|
||||
|
||||
return g_slist_reverse (retval);
|
||||
}
|
||||
|
||||
void
|
||||
clutter_path_behaviour_append_knot (ClutterBehaviourPath *pathb,
|
||||
const ClutterKnot *knot)
|
||||
{
|
||||
ClutterBehaviourPathPrivate *priv;
|
||||
|
||||
g_return_if_fail (knot != NULL);
|
||||
|
||||
priv = pathb->priv;
|
||||
|
||||
priv->knots = g_slist_append (priv->knots,
|
||||
clutter_knot_copy (knot));
|
||||
}
|
||||
|
||||
void
|
||||
clutter_path_behaviour_append_knots_valist (ClutterBehaviourPath *pathb,
|
||||
const ClutterKnot *first_knot,
|
||||
va_list args)
|
||||
{
|
||||
const ClutterKnot * knot;
|
||||
|
||||
knot = first_knot;
|
||||
while (knot)
|
||||
{
|
||||
clutter_path_behaviour_append_knot (pathb, knot);
|
||||
knot = va_arg (args, ClutterKnot*);
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
clutter_path_behavior_append_knots (ClutterBehaviourPath *pathb,
|
||||
const ClutterKnot *first_knot,
|
||||
...)
|
||||
{
|
||||
va_list args;
|
||||
|
||||
g_return_if_fail (first_knot != NULL);
|
||||
|
||||
va_start (args, first_knot);
|
||||
clutter_path_behaviour_append_knots_valist (pathb, first_knot, args);
|
||||
va_end (args);
|
||||
}
|
||||
|
||||
void
|
||||
clutter_path_behavior_remove_knot (ClutterBehaviourPath *behave,
|
||||
guint index)
|
||||
{
|
||||
/* FIXME: implement */
|
||||
}
|
||||
|
||||
ClutterKnot*
|
||||
clutter_path_behavior_get_knot (ClutterBehaviourPath *behave,
|
||||
guint index)
|
||||
{
|
||||
/* FIXME: implement */
|
||||
}
|
||||
|
||||
void
|
||||
clutter_path_behavior_insert_knot (ClutterBehaviourPath *behave,
|
||||
ClutterKnot *knot,
|
||||
guint index)
|
||||
{
|
||||
/* FIXME: implement */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* ====================== Opacity ============================
|
||||
*/
|
||||
|
||||
|
||||
G_DEFINE_TYPE (ClutterBehaviourOpacity, \
|
||||
clutter_behaviour_opacity, \
|
||||
@ -166,20 +380,14 @@ clutter_behaviour_opacity_frame_foreach (ClutterActor *actor,
|
||||
guint8 opacity;
|
||||
ClutterBehaviourOpacityPrivate *priv;
|
||||
ClutterBehaviour *_behave;
|
||||
GParamSpec *pspec;
|
||||
|
||||
priv = CLUTTER_BEHAVIOUR_OPACITY_GET_PRIVATE (behave);
|
||||
_behave = CLUTTER_BEHAVIOUR (behave);
|
||||
|
||||
pspec = clutter_behaviour_get_param_spec (_behave);
|
||||
|
||||
g_object_get (clutter_behaviour_get_object (_behave),
|
||||
pspec->name,
|
||||
&alpha,
|
||||
NULL);
|
||||
alpha = clutter_alpha_get_alpha (clutter_behaviour_get_alpha (_behave));
|
||||
|
||||
opacity = (alpha * (priv->opacity_end - priv->opacity_start))
|
||||
/ ((GParamSpecUInt *) pspec)->maximum;
|
||||
/ CLUTTER_ALPHA_MAX_ALPHA;
|
||||
|
||||
opacity += priv->opacity_start;
|
||||
|
||||
@ -189,12 +397,8 @@ clutter_behaviour_opacity_frame_foreach (ClutterActor *actor,
|
||||
}
|
||||
|
||||
static void
|
||||
clutter_behaviour_property_change (ClutterBehaviour *behave,
|
||||
GObject *object,
|
||||
GParamSpec *param_spec)
|
||||
clutter_behaviour_alpha_notify (ClutterBehaviour *behave)
|
||||
{
|
||||
g_return_if_fail (param_spec->value_type == G_TYPE_UINT);
|
||||
|
||||
clutter_behaviour_actors_foreach
|
||||
(behave,
|
||||
(GFunc)clutter_behaviour_opacity_frame_foreach,
|
||||
@ -235,7 +439,7 @@ clutter_behaviour_opacity_class_init (ClutterBehaviourOpacityClass *klass)
|
||||
|
||||
behave_class = (ClutterBehaviourClass*) klass;
|
||||
|
||||
behave_class->property_change = clutter_behaviour_property_change;
|
||||
behave_class->alpha_notify = clutter_behaviour_alpha_notify;
|
||||
|
||||
g_type_class_add_private (object_class, sizeof (ClutterBehaviourOpacityPrivate));
|
||||
}
|
||||
@ -249,16 +453,14 @@ clutter_behaviour_opacity_init (ClutterBehaviourOpacity *self)
|
||||
}
|
||||
|
||||
ClutterBehaviour*
|
||||
clutter_behaviour_opacity_new (GObject *object,
|
||||
const char *property,
|
||||
guint8 opacity_start,
|
||||
guint8 opacity_end)
|
||||
clutter_behaviour_opacity_new (ClutterAlpha *alpha,
|
||||
guint8 opacity_start,
|
||||
guint8 opacity_end)
|
||||
{
|
||||
ClutterBehaviourOpacity *behave;
|
||||
|
||||
behave = g_object_new (CLUTTER_TYPE_BEHAVIOUR_OPACITY,
|
||||
"object", object,
|
||||
"property", property,
|
||||
"alpha", alpha,
|
||||
NULL);
|
||||
|
||||
behave->priv->opacity_start = opacity_start;
|
||||
@ -267,13 +469,3 @@ clutter_behaviour_opacity_new (GObject *object,
|
||||
return CLUTTER_BEHAVIOUR(behave);
|
||||
}
|
||||
|
||||
ClutterBehaviour*
|
||||
clutter_behaviour_opacity_new_from_alpha (ClutterAlpha *alpha,
|
||||
guint8 opacity_start,
|
||||
guint8 opacity_end)
|
||||
{
|
||||
return clutter_behaviour_opacity_new (G_OBJECT (alpha),
|
||||
"alpha",
|
||||
opacity_start,
|
||||
opacity_end);
|
||||
}
|
||||
|
||||
@ -7,6 +7,14 @@
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
typedef struct _ClutterKnot ClutterKnot;
|
||||
|
||||
struct _ClutterKnot
|
||||
{
|
||||
gint x,y;
|
||||
/* FIXME: optionally include bezier control points also ? */
|
||||
};
|
||||
|
||||
#define CLUTTER_TYPE_BEHAVIOUR_PATH clutter_behaviour_path_get_type()
|
||||
|
||||
#define CLUTTER_BEHAVIOUR_PATH(obj) \
|
||||
@ -47,12 +55,26 @@ struct _ClutterBehaviourPathClass
|
||||
GType clutter_behaviour_path_get_type (void);
|
||||
|
||||
ClutterBehaviour*
|
||||
clutter_behaviour_path_new (GObject *object,
|
||||
const char *property,
|
||||
gint x1,
|
||||
gint y1,
|
||||
gint x2,
|
||||
gint y2);
|
||||
clutter_behaviour_path_new (ClutterAlpha *alpha,
|
||||
const ClutterKnot *knots,
|
||||
guint n_knots);
|
||||
|
||||
GSList*
|
||||
clutter_path_behaviour_get_knots (ClutterBehaviourPath *behave);
|
||||
|
||||
void
|
||||
clutter_path_behaviour_append_knot (ClutterBehaviourPath *pathb,
|
||||
const ClutterKnot *knot);
|
||||
|
||||
void
|
||||
clutter_path_behaviour_append_knots_valist (ClutterBehaviourPath *pathb,
|
||||
const ClutterKnot *first_knot,
|
||||
va_list args);
|
||||
|
||||
void
|
||||
clutter_path_behavior_append_knots (ClutterBehaviourPath *pathb,
|
||||
const ClutterKnot *first_knot,
|
||||
...);
|
||||
|
||||
/* opacity */
|
||||
|
||||
@ -96,15 +118,9 @@ struct _ClutterBehaviourOpacityClass
|
||||
GType clutter_behaviour_opacity_get_type (void);
|
||||
|
||||
ClutterBehaviour*
|
||||
clutter_behaviour_opacity_new (GObject *object,
|
||||
const char *property,
|
||||
guint8 opacity_start,
|
||||
guint8 opacity_end);
|
||||
|
||||
ClutterBehaviour*
|
||||
clutter_behaviour_opacity_new_from_alpha (ClutterAlpha *alpha,
|
||||
guint8 opacity_start,
|
||||
guint8 opacity_end);
|
||||
clutter_behaviour_opacity_new (ClutterAlpha *alpha,
|
||||
guint8 opacity_start,
|
||||
guint8 opacity_end);
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
|
||||
@ -10,6 +10,8 @@ main (int argc, char *argv[])
|
||||
ClutterColor stage_color = { 0xcc, 0xcc, 0xcc, 0xff };
|
||||
GdkPixbuf *pixbuf;
|
||||
|
||||
ClutterKnot knots[] = {{ 100, 100 }, { 100, 200 }, { 200, 200 },
|
||||
{ 200, 100 }, {100, 100 }};
|
||||
|
||||
clutter_init (&argc, &argv);
|
||||
|
||||
@ -29,19 +31,23 @@ main (int argc, char *argv[])
|
||||
clutter_group_add (CLUTTER_GROUP (stage), hand);
|
||||
|
||||
/* Make a timeline */
|
||||
timeline = clutter_timeline_new (100, 30); /* num frames, fps */
|
||||
timeline = clutter_timeline_new (100, 60); /* num frames, fps */
|
||||
g_object_set(timeline, "loop", TRUE, 0);
|
||||
|
||||
/* Set an alpha func to power behaviour - ramp is constant rise/fall */
|
||||
alpha = clutter_alpha_new (timeline, CLUTTER_ALPHA_RAMP);
|
||||
|
||||
/* Create a behaviour for that time line */
|
||||
behave = clutter_behaviour_opacity_new_from_alpha (alpha, 0X33, 0xff);
|
||||
/* Create a behaviour for that alpha */
|
||||
behave = clutter_behaviour_opacity_new (alpha, 0X33, 0xff);
|
||||
|
||||
/* Apply it to our actor */
|
||||
clutter_behaviour_apply (behave, hand);
|
||||
|
||||
/* start the timeline */
|
||||
/* Make a path behaviour and apply that too */
|
||||
behave = clutter_behaviour_path_new (alpha, knots, 5);
|
||||
clutter_behaviour_apply (behave, hand);
|
||||
|
||||
/* start the timeline and thus the animations */
|
||||
clutter_timeline_start (timeline);
|
||||
|
||||
clutter_group_show_all (CLUTTER_GROUP (stage));
|
||||
|
||||
Loading…
Reference in New Issue
Block a user