691 lines
18 KiB
C
691 lines
18 KiB
C
/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Authored By Matthew Allum <mallum@openedhand.com>
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*
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* Copyright (C) 2007 OpenedHand
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* SECTION:clutter-behaviour-rotate
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* @short_description: A behaviour controlling rotation
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*
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* A #ClutterBehaviourRotate rotate actors between a starting and ending
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* angle on a given axis.
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*
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* The #ClutterBehaviourRotate is available since version 0.4.
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*
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* Deprecated: 1.6: Use the #ClutterActor rotation properties and
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* clutter_actor_animate(), or #ClutterAnimator, or #ClutterState
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* instead.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <math.h>
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#define CLUTTER_DISABLE_DEPRECATION_WARNINGS
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#include "deprecated/clutter-actor.h"
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#include "clutter-alpha.h"
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#include "clutter-behaviour.h"
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#include "clutter-behaviour-rotate.h"
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#include "clutter-debug.h"
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#include "clutter-enum-types.h"
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#include "clutter-main.h"
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#include "clutter-private.h"
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struct _ClutterBehaviourRotatePrivate
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{
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gdouble angle_start;
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gdouble angle_end;
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ClutterRotateAxis axis;
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ClutterRotateDirection direction;
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gint center_x;
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gint center_y;
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gint center_z;
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};
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enum
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{
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PROP_0,
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PROP_ANGLE_START,
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PROP_ANGLE_END,
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PROP_AXIS,
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PROP_DIRECTION,
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PROP_CENTER_X,
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PROP_CENTER_Y,
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PROP_CENTER_Z,
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PROP_LAST
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};
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static GParamSpec *obj_props[PROP_LAST];
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G_DEFINE_TYPE_WITH_PRIVATE (ClutterBehaviourRotate,
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clutter_behaviour_rotate,
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CLUTTER_TYPE_BEHAVIOUR)
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typedef struct {
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gdouble angle;
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} RotateFrameClosure;
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static void
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alpha_notify_foreach (ClutterBehaviour *behaviour,
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ClutterActor *actor,
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gpointer data)
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{
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RotateFrameClosure *closure = data;
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ClutterBehaviourRotate *rotate_behaviour;
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ClutterBehaviourRotatePrivate *priv;
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rotate_behaviour = CLUTTER_BEHAVIOUR_ROTATE (behaviour);
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priv = rotate_behaviour->priv;
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clutter_actor_set_rotation (actor, priv->axis,
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closure->angle,
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priv->center_x,
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priv->center_y,
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priv->center_z);
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}
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static inline float
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clamp_angle (float a)
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{
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float a1, a2;
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gint rounds;
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rounds = a / 360.0;
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a1 = rounds * 360.0;
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a2 = a - a1;
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return a2;
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}
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static void
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clutter_behaviour_rotate_alpha_notify (ClutterBehaviour *behaviour,
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gdouble alpha_value)
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{
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ClutterBehaviourRotate *rotate_behaviour;
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ClutterBehaviourRotatePrivate *priv;
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RotateFrameClosure closure;
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gdouble start, end;
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rotate_behaviour = CLUTTER_BEHAVIOUR_ROTATE (behaviour);
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priv = rotate_behaviour->priv;
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closure.angle = 0;
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start = priv->angle_start;
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end = priv->angle_end;
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if (priv->direction == CLUTTER_ROTATE_CW && start >= end)
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end += 360.0;
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else if (priv->direction == CLUTTER_ROTATE_CCW && start <= end)
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end -= 360.0;
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closure.angle = (end - start) * alpha_value + start;
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clutter_behaviour_actors_foreach (behaviour,
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alpha_notify_foreach,
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&closure);
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}
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static void
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clutter_behaviour_rotate_set_property (GObject *gobject,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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ClutterBehaviourRotate *rotate;
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ClutterBehaviourRotatePrivate *priv;
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rotate = CLUTTER_BEHAVIOUR_ROTATE (gobject);
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priv = rotate->priv;
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switch (prop_id)
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{
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case PROP_ANGLE_START:
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priv->angle_start = g_value_get_double (value);
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break;
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case PROP_ANGLE_END:
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priv->angle_end = g_value_get_double (value);
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break;
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case PROP_AXIS:
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priv->axis = g_value_get_enum (value);
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break;
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case PROP_DIRECTION:
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priv->direction = g_value_get_enum (value);
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break;
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case PROP_CENTER_X:
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clutter_behaviour_rotate_set_center (rotate,
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g_value_get_int (value),
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priv->center_y,
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priv->center_z);
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break;
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case PROP_CENTER_Y:
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clutter_behaviour_rotate_set_center (rotate,
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priv->center_x,
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g_value_get_int (value),
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priv->center_z);
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break;
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case PROP_CENTER_Z:
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clutter_behaviour_rotate_set_center (rotate,
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priv->center_x,
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priv->center_y,
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g_value_get_int (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
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break;
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}
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}
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static void
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clutter_behaviour_rotate_get_property (GObject *gobject,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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ClutterBehaviourRotatePrivate *priv;
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priv = CLUTTER_BEHAVIOUR_ROTATE (gobject)->priv;
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switch (prop_id)
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{
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case PROP_ANGLE_START:
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g_value_set_double (value, priv->angle_start);
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break;
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case PROP_ANGLE_END:
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g_value_set_double (value, priv->angle_end);
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break;
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case PROP_AXIS:
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g_value_set_enum (value, priv->axis);
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break;
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case PROP_DIRECTION:
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g_value_set_enum (value, priv->direction);
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break;
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case PROP_CENTER_X:
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g_value_set_int (value, priv->center_x);
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break;
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case PROP_CENTER_Y:
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g_value_set_int (value, priv->center_y);
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break;
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case PROP_CENTER_Z:
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g_value_set_int (value, priv->center_z);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
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break;
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}
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}
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static void
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clutter_behaviour_rotate_class_init (ClutterBehaviourRotateClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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ClutterBehaviourClass *behaviour_class = CLUTTER_BEHAVIOUR_CLASS (klass);
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GParamSpec *pspec = NULL;
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gobject_class->set_property = clutter_behaviour_rotate_set_property;
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gobject_class->get_property = clutter_behaviour_rotate_get_property;
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behaviour_class->alpha_notify = clutter_behaviour_rotate_alpha_notify;
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/**
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* ClutterBehaviourRotate:angle-start:
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*
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* The initial angle from whence the rotation should start.
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*
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* Since: 0.4
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*/
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pspec = g_param_spec_double ("angle-start",
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P_("Angle Begin"),
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P_("Initial angle"),
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0.0, 360.0,
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0.0,
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CLUTTER_PARAM_READWRITE);
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obj_props[PROP_ANGLE_START] = pspec;
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g_object_class_install_property (gobject_class,
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PROP_ANGLE_START,
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pspec);
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/**
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* ClutterBehaviourRotate:angle-end:
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*
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* The final angle to where the rotation should end.
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*
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* Since: 0.4
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*/
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pspec = g_param_spec_double ("angle-end",
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P_("Angle End"),
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P_("Final angle"),
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0.0, 360.0,
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0.0,
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CLUTTER_PARAM_READWRITE);
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obj_props[PROP_ANGLE_END] = pspec;
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g_object_class_install_property (gobject_class,
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PROP_ANGLE_END,
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pspec);
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/**
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* ClutterBehaviourRotate:axis:
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*
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* The axis of rotation.
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*
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* Since: 0.4
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*/
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pspec = g_param_spec_enum ("axis",
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P_("Axis"),
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P_("Axis of rotation"),
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CLUTTER_TYPE_ROTATE_AXIS,
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CLUTTER_Z_AXIS,
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CLUTTER_PARAM_READWRITE);
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obj_props[PROP_AXIS] = pspec;
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g_object_class_install_property (gobject_class,
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PROP_AXIS,
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pspec);
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/**
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* ClutterBehaviourRotate:direction:
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*
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* The direction of the rotation.
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*
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* Since: 0.4
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*/
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pspec = g_param_spec_enum ("direction",
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P_("Direction"),
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P_("Direction of rotation"),
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CLUTTER_TYPE_ROTATE_DIRECTION,
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CLUTTER_ROTATE_CW,
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CLUTTER_PARAM_READWRITE);
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obj_props[PROP_DIRECTION] = pspec;
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g_object_class_install_property (gobject_class,
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PROP_DIRECTION,
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pspec);
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/**
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* ClutterBehaviourRotate:center-x:
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*
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* The x center of rotation.
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*
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* Since: 0.4
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*/
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pspec = g_param_spec_int ("center-x",
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P_("Center X"),
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P_("X coordinate of the center of rotation"),
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-G_MAXINT, G_MAXINT,
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0,
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CLUTTER_PARAM_READWRITE);
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obj_props[PROP_CENTER_X] = pspec;
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g_object_class_install_property (gobject_class,
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PROP_CENTER_X,
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pspec);
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/**
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* ClutterBehaviourRotate:center-y:
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*
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* The y center of rotation.
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*
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* Since: 0.4
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*/
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pspec = g_param_spec_int ("center-y",
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P_("Center Y"),
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P_("Y coordinate of the center of rotation"),
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-G_MAXINT, G_MAXINT,
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0,
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CLUTTER_PARAM_READWRITE);
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obj_props[PROP_CENTER_Y] = pspec;
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g_object_class_install_property (gobject_class,
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PROP_CENTER_Y,
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pspec);
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/**
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* ClutterBehaviourRotate:center-z:
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*
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* The z center of rotation.
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*
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* Since: 0.4
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*/
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pspec = g_param_spec_int ("center-z",
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P_("Center Z"),
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P_("Z coordinate of the center of rotation"),
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-G_MAXINT, G_MAXINT,
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0,
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CLUTTER_PARAM_READWRITE);
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obj_props[PROP_CENTER_Z] = pspec;
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g_object_class_install_property (gobject_class,
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PROP_CENTER_Z,
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pspec);
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}
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static void
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clutter_behaviour_rotate_init (ClutterBehaviourRotate *self)
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{
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self->priv = clutter_behaviour_rotate_get_instance_private (self);
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self->priv->angle_start = 0.0;
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self->priv->angle_end = 0.0;
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self->priv->axis = CLUTTER_Z_AXIS;
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self->priv->direction = CLUTTER_ROTATE_CW;
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self->priv->center_x = 0;
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self->priv->center_y = 0;
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self->priv->center_z = 0;
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}
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/**
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* clutter_behaviour_rotate_new:
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* @alpha: (allow-none): a #ClutterAlpha instance, or %NULL
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* @axis: the rotation axis
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* @direction: the rotation direction
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* @angle_start: the starting angle in degrees, between 0 and 360.
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* @angle_end: the final angle in degrees, between 0 and 360.
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*
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* Creates a new #ClutterBehaviourRotate. This behaviour will rotate actors
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* bound to it on @axis, following @direction, between @angle_start and
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* @angle_end. Angles >= 360 degrees will be clamped to the canonical interval
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* <0, 360), if angle_start == angle_end, the behaviour will carry out a
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* single rotation of 360 degrees.
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*
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* If @alpha is not %NULL, the #ClutterBehaviour will take ownership
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* of the #ClutterAlpha instance. In the case when @alpha is %NULL,
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* it can be set later with clutter_behaviour_set_alpha().
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*
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* Return value: the newly created #ClutterBehaviourRotate.
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*
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* Since: 0.4
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*/
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ClutterBehaviour *
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clutter_behaviour_rotate_new (ClutterAlpha *alpha,
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ClutterRotateAxis axis,
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ClutterRotateDirection direction,
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gdouble angle_start,
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gdouble angle_end)
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{
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g_return_val_if_fail (alpha == NULL || CLUTTER_IS_ALPHA (alpha), NULL);
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return g_object_new (CLUTTER_TYPE_BEHAVIOUR_ROTATE,
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"alpha", alpha,
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"axis", axis,
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"direction", direction,
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"angle-start", angle_start,
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"angle-end", angle_end,
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NULL);
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}
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/**
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* clutter_behaviour_rotate_get_axis:
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* @rotate: a #ClutterBehaviourRotate
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*
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* Retrieves the #ClutterRotateAxis used by the rotate behaviour.
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*
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* Return value: the rotation axis
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*
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* Since: 0.4
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*/
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ClutterRotateAxis
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clutter_behaviour_rotate_get_axis (ClutterBehaviourRotate *rotate)
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{
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g_return_val_if_fail (CLUTTER_IS_BEHAVIOUR_ROTATE (rotate), CLUTTER_Z_AXIS);
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return rotate->priv->axis;
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}
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/**
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* clutter_behaviour_rotate_set_axis:
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* @rotate: a #ClutterBehaviourRotate
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* @axis: a #ClutterRotateAxis
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*
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* Sets the axis used by the rotate behaviour.
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*
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* Since: 0.4
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*/
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void
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clutter_behaviour_rotate_set_axis (ClutterBehaviourRotate *rotate,
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ClutterRotateAxis axis)
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{
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ClutterBehaviourRotatePrivate *priv;
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g_return_if_fail (CLUTTER_IS_BEHAVIOUR_ROTATE (rotate));
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priv = rotate->priv;
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if (priv->axis != axis)
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{
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priv->axis = axis;
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g_object_notify_by_pspec (G_OBJECT (rotate), obj_props[PROP_AXIS]);
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}
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}
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/**
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* clutter_behaviour_rotate_get_direction:
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* @rotate: a #ClutterBehaviourRotate
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*
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* Retrieves the #ClutterRotateDirection used by the rotate behaviour.
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*
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* Return value: the rotation direction
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*
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* Since: 0.4
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*/
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ClutterRotateDirection
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clutter_behaviour_rotate_get_direction (ClutterBehaviourRotate *rotate)
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{
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g_return_val_if_fail (CLUTTER_IS_BEHAVIOUR_ROTATE (rotate),
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CLUTTER_ROTATE_CW);
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return rotate->priv->direction;
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}
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/**
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* clutter_behaviour_rotate_set_direction:
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* @rotate: a #ClutterBehaviourRotate
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* @direction: the rotation direction
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*
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* Sets the rotation direction used by the rotate behaviour.
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*
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* Since: 0.4
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*/
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void
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clutter_behaviour_rotate_set_direction (ClutterBehaviourRotate *rotate,
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ClutterRotateDirection direction)
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{
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ClutterBehaviourRotatePrivate *priv;
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g_return_if_fail (CLUTTER_IS_BEHAVIOUR_ROTATE (rotate));
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priv = rotate->priv;
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if (priv->direction != direction)
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{
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priv->direction = direction;
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g_object_notify_by_pspec (G_OBJECT (rotate), obj_props[PROP_DIRECTION]);
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}
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}
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/**
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* clutter_behaviour_rotate_get_bounds:
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* @rotate: a #ClutterBehaviourRotate
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* @angle_start: (out): return value for the initial angle
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* @angle_end: (out): return value for the final angle
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*
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* Retrieves the rotation boundaries of the rotate behaviour.
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*
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* Since: 0.4
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*/
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void
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clutter_behaviour_rotate_get_bounds (ClutterBehaviourRotate *rotate,
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gdouble *angle_start,
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gdouble *angle_end)
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{
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ClutterBehaviourRotatePrivate *priv;
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g_return_if_fail (CLUTTER_IS_BEHAVIOUR_ROTATE (rotate));
|
|
|
|
priv = rotate->priv;
|
|
|
|
if (angle_start)
|
|
*angle_start = priv->angle_start;
|
|
|
|
if (angle_end)
|
|
*angle_end = priv->angle_end;
|
|
}
|
|
|
|
/**
|
|
* clutter_behaviour_rotate_set_bounds:
|
|
* @rotate: a #ClutterBehaviourRotate
|
|
* @angle_start: initial angle in degrees, between 0 and 360.
|
|
* @angle_end: final angle in degrees, between 0 and 360.
|
|
*
|
|
* Sets the initial and final angles of a rotation behaviour; angles >= 360
|
|
* degrees get clamped to the canonical interval <0, 360).
|
|
*
|
|
* Since: 0.4
|
|
*/
|
|
void
|
|
clutter_behaviour_rotate_set_bounds (ClutterBehaviourRotate *rotate,
|
|
gdouble angle_start,
|
|
gdouble angle_end)
|
|
{
|
|
ClutterBehaviourRotatePrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_BEHAVIOUR_ROTATE (rotate));
|
|
|
|
priv = rotate->priv;
|
|
|
|
g_object_freeze_notify (G_OBJECT (rotate));
|
|
|
|
if (priv->angle_start != angle_start)
|
|
{
|
|
priv->angle_start = clamp_angle (angle_start);
|
|
|
|
g_object_notify_by_pspec (G_OBJECT (rotate), obj_props[PROP_ANGLE_START]);
|
|
}
|
|
|
|
if (priv->angle_end != angle_end)
|
|
{
|
|
priv->angle_end = clamp_angle (angle_end);
|
|
|
|
g_object_notify_by_pspec (G_OBJECT (rotate), obj_props[PROP_ANGLE_END]);
|
|
}
|
|
|
|
g_object_thaw_notify (G_OBJECT (rotate));
|
|
}
|
|
|
|
/**
|
|
* clutter_behaviour_rotate_set_center:
|
|
* @rotate: a #ClutterBehaviourRotate
|
|
* @x: X axis center of rotation
|
|
* @y: Y axis center of rotation
|
|
* @z: Z axis center of rotation
|
|
*
|
|
* Sets the center of rotation. The coordinates are relative to the plane
|
|
* normal to the rotation axis set with clutter_behaviour_rotate_set_axis().
|
|
*
|
|
* Since: 0.4
|
|
*/
|
|
void
|
|
clutter_behaviour_rotate_set_center (ClutterBehaviourRotate *rotate,
|
|
gint x,
|
|
gint y,
|
|
gint z)
|
|
{
|
|
ClutterBehaviourRotatePrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_BEHAVIOUR_ROTATE (rotate));
|
|
|
|
priv = rotate->priv;
|
|
|
|
g_object_freeze_notify (G_OBJECT (rotate));
|
|
|
|
if (priv->center_x != x)
|
|
{
|
|
priv->center_x = x;
|
|
g_object_notify_by_pspec (G_OBJECT (rotate), obj_props[PROP_CENTER_X]);
|
|
}
|
|
|
|
if (priv->center_y != y)
|
|
{
|
|
priv->center_y = y;
|
|
g_object_notify_by_pspec (G_OBJECT (rotate), obj_props[PROP_CENTER_Y]);
|
|
}
|
|
|
|
if (priv->center_z != z)
|
|
{
|
|
priv->center_z = z;
|
|
g_object_notify_by_pspec (G_OBJECT (rotate), obj_props[PROP_CENTER_Z]);
|
|
}
|
|
|
|
g_object_thaw_notify (G_OBJECT (rotate));
|
|
}
|
|
|
|
/**
|
|
* clutter_behaviour_rotate_get_center:
|
|
* @rotate: a #ClutterBehaviourRotate
|
|
* @x: (out): return location for the X center of rotation
|
|
* @y: (out): return location for the Y center of rotation
|
|
* @z: (out): return location for the Z center of rotation
|
|
*
|
|
* Retrieves the center of rotation set using
|
|
* clutter_behaviour_rotate_set_center().
|
|
*
|
|
* Since: 0.4
|
|
*/
|
|
void
|
|
clutter_behaviour_rotate_get_center (ClutterBehaviourRotate *rotate,
|
|
gint *x,
|
|
gint *y,
|
|
gint *z)
|
|
{
|
|
ClutterBehaviourRotatePrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_BEHAVIOUR_ROTATE (rotate));
|
|
|
|
priv = rotate->priv;
|
|
|
|
if (x)
|
|
*x = priv->center_x;
|
|
|
|
if (y)
|
|
*y = priv->center_y;
|
|
|
|
if (z)
|
|
*z = priv->center_z;
|
|
}
|