isa/mutter
1
0
Fork 0
mirror of https://github.com/brl/mutter.git synced 2024-12-22 11:02:05 +00:00
Code Issues Packages Projects Releases Wiki Activity

bezier spline behaviours

Browse Source
This commit is contained in:
Tomas Frydrych 2007-04-12 12:42:07 +00:00
parent 0085b75610
commit 43593ab81f
13 changed files with 1446 additions and 99 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
ChangeLog
View File

@ -1,3 +1,26 @@
2007-04-12 Tomas Frydrych <tf@openedhand.com>
* clutter/clutter-behaviour.h:
* clutter/clutter-behaviour.c:
* clutter/clutter-behaviour-path.h:
* clutter/clutter-behaviour-path.c:
Moved declaration of ClutterKnot from clutter-behaviour path
into clutter-behaviour.
* clutter/clutter-fixed.h
* clutter/clutter-fixed.c
Added myself as an author.
* clutter/Makefile.am:
* clutter/clutter.h:
* clutter/clutter-behaviour-bspline.h:
* clutter/clutter-behaviour-bspline.c:
Added new bezier spline behaviour.
* examples/bspline.c:
* examples/Makefile.am:
An example of using bspline path.
2007-03-29 Tomas Frydrych <tf@openedhand.com>
* clutter/clutter-stage.c:

2
clutter/Makefile.am
View File

@ -40,6 +40,7 @@ source_h = \
$(srcdir)/clutter-behaviour.h \
$(srcdir)/clutter-behaviour-opacity.h \
$(srcdir)/clutter-behaviour-path.h \
$(srcdir)/clutter-behaviour-bspline.h \
$(srcdir)/clutter-behaviour-scale.h \
$(srcdir)/clutter-clone-texture.h \
$(srcdir)/clutter-color.h \
@ -123,6 +124,7 @@ source_c = \
clutter-behaviour.c \
clutter-behaviour-opacity.c \
clutter-behaviour-path.c \
clutter-behaviour-bspline.c \
clutter-behaviour-scale.c \
clutter-color.c \
clutter-clone-texture.c \

1098
clutter/clutter-behaviour-bspline.c Normal file
View File

File diff suppressed because it is too large Load Diff

116
clutter/clutter-behaviour-bspline.h Normal file
View File

@ -0,0 +1,116 @@
/*
* Clutter.
*
* An OpenGL based 'interactive canvas' library.
*
* Authored By Tomas Frydrych <tf@openedhand.com>
*
* Copyright (C) 2006, 2007 OpenedHand
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __CLUTTER_BEHAVIOUR_BSPLINE_H__
#define __CLUTTER_BEHAVIOUR_BSPLINE_H__
#include <clutter/clutter-alpha.h>
#include <clutter/clutter-actor.h>
#include <clutter/clutter-behaviour.h>
G_BEGIN_DECLS
#define CLUTTER_TYPE_BEHAVIOUR_BSPLINE (clutter_behaviour_bspline_get_type ())
#define CLUTTER_BEHAVIOUR_BSPLINE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), \
CLUTTER_TYPE_BEHAVIOUR_BSPLINE, ClutterBehaviourBspline))
#define CLUTTER_BEHAVIOUR_BSPLINE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), \
CLUTTER_TYPE_BEHAVIOUR_BSPLINE, ClutterBehaviourBsplineClass))
#define CLUTTER_IS_BEHAVIOUR_BSPLINE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), \
CLUTTER_TYPE_BEHAVIOUR_BSPLINE))
#define CLUTTER_IS_BEHAVIOUR_BSPLINE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), \
CLUTTER_TYPE_BEHAVIOUR_BSPLINE))
#define CLUTTER_BEHAVIOUR_BSPLINE_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS ((obj), \
CLUTTER_TYPE_BEHAVIOUR_BSPLINE, ClutterBehaviourBsplineClass))
typedef struct _ClutterBehaviourBspline ClutterBehaviourBspline;
typedef struct _ClutterBehaviourBsplinePrivate ClutterBehaviourBsplinePrivate;
typedef struct _ClutterBehaviourBsplineClass ClutterBehaviourBsplineClass;
struct _ClutterBehaviourBspline
{
ClutterBehaviour parent;
ClutterBehaviourBsplinePrivate *priv;
};
struct _ClutterBehaviourBsplineClass
{
ClutterBehaviourClass parent_class;
void (*knot_reached) (ClutterBehaviourBspline * bsplineb,
const ClutterKnot * knot);
void (*_clutter_bspline_1) (void);
void (*_clutter_bspline_2) (void);
void (*_clutter_bspline_3) (void);
void (*_clutter_bspline_4) (void);
};
GType clutter_behaviour_bspline_get_type (void) G_GNUC_CONST;
ClutterBehaviour * clutter_behaviour_bspline_new (ClutterAlpha * alpha,
const ClutterKnot * points,
guint n_points);
void clutter_behaviour_bspline_append_knot (ClutterBehaviourBspline * bs,
const ClutterKnot * knot);
void clutter_behaviour_bspline_append (ClutterBehaviourBspline * bs,
const ClutterKnot * first_knot,
...) G_GNUC_NULL_TERMINATED;
void clutter_behaviour_bspline_truncate (ClutterBehaviourBspline *bs,
guint offset);
void clutter_behaviour_bspline_join (ClutterBehaviourBspline * bs1,
ClutterBehaviourBspline * bs2);
ClutterBehaviourBspline * clutter_behaviour_bspline_split (ClutterBehaviourBspline * bs,
guint offset);
void clutter_behaviour_bspline_clear (ClutterBehaviourBspline * bs);
void clutter_behaviour_bspline_adjust (ClutterBehaviourBspline * bs,
guint offset,
ClutterKnot * knot);
void clutter_behaviour_bspline_set_origin (ClutterBehaviourBspline * bs,
ClutterKnot * knot);
void clutter_behaviour_bspline_get_origin (ClutterBehaviourBspline * bs,
ClutterKnot * knot);
G_END_DECLS
#endif /* __CLUTTER_BEHAVIOUR_BSPLINE_H__ */

80
clutter/clutter-behaviour-path.c
View File

@ -55,86 +55,6 @@
#include <math.h>
/**
* clutter_knot_copy:
* @knot: a #ClutterKnot
*
* Makes an allocated copy of a knot.
*
* Return value: the copied knot.
*
* Since: 0.2
*/
ClutterKnot *
clutter_knot_copy (const ClutterKnot *knot)
{
ClutterKnot *copy;
copy = g_slice_new0 (ClutterKnot);
*copy = *knot;
return copy;
}
/**
* clutter_knot_free:
* @knot: a #ClutterKnot
*
* Frees the memory of an allocated knot.
*
* Since: 0.2
*/
void
clutter_knot_free (ClutterKnot *knot)
{
if (G_LIKELY (knot))
{
g_slice_free (ClutterKnot, knot);
}
}
/**
* clutter_knot_equal:
* @knot_a: First knot
* @knot_b: Second knot
*
* Compares to knot and checks if the point to the same location.
*
* Return value: %TRUE if the knots point to the same location.
*
* Since: 0.2
*/
gboolean
clutter_knot_equal (const ClutterKnot *knot_a,
const ClutterKnot *knot_b)
{
g_return_val_if_fail (knot_a != NULL, FALSE);
g_return_val_if_fail (knot_b != NULL, FALSE);
if (knot_a == knot_b)
return TRUE;
return knot_a->x == knot_b->x && knot_a->y == knot_b->y;
}
GType
clutter_knot_get_type (void)
{
static GType our_type = 0;
if (G_UNLIKELY (!our_type))
{
our_type =
g_boxed_type_register_static ("ClutterKnot",
(GBoxedCopyFunc) clutter_knot_copy,
(GBoxedFreeFunc) clutter_knot_free);
}
return our_type;
}
G_DEFINE_TYPE (ClutterBehaviourPath,
clutter_behaviour_path,
CLUTTER_TYPE_BEHAVIOUR);

16
clutter/clutter-behaviour-path.h
View File

@ -33,22 +33,6 @@
G_BEGIN_DECLS
#define CLUTTER_TYPE_KNOT (clutter_knot_get_type ())
typedef struct _ClutterKnot ClutterKnot;
struct _ClutterKnot
{
gint x,y;
/* FIXME: optionally include bezier control points also ? */
};
GType clutter_knot_get_type (void) G_GNUC_CONST;
ClutterKnot *clutter_knot_copy (const ClutterKnot *knot);
void clutter_knot_free (ClutterKnot *knot);
gboolean clutter_knot_equal (const ClutterKnot *knot_a,
const ClutterKnot *knot_b);
#define CLUTTER_TYPE_BEHAVIOUR_PATH (clutter_behaviour_path_get_type ())
#define CLUTTER_BEHAVIOUR_PATH(obj) \

79
clutter/clutter-behaviour.c
View File

@ -59,6 +59,85 @@
#include "clutter-debug.h"
#include "clutter-private.h"
/**
* clutter_knot_copy:
* @knot: a #ClutterKnot
*
* Makes an allocated copy of a knot.
*
* Return value: the copied knot.
*
* Since: 0.2
*/
ClutterKnot *
clutter_knot_copy (const ClutterKnot *knot)
{
ClutterKnot *copy;
copy = g_slice_new0 (ClutterKnot);
*copy = *knot;
return copy;
}
/**
* clutter_knot_free:
* @knot: a #ClutterKnot
*
* Frees the memory of an allocated knot.
*
* Since: 0.2
*/
void
clutter_knot_free (ClutterKnot *knot)
{
if (G_LIKELY (knot))
{
g_slice_free (ClutterKnot, knot);
}
}
/**
* clutter_knot_equal:
* @knot_a: First knot
* @knot_b: Second knot
*
* Compares to knot and checks if the point to the same location.
*
* Return value: %TRUE if the knots point to the same location.
*
* Since: 0.2
*/
gboolean
clutter_knot_equal (const ClutterKnot *knot_a,
const ClutterKnot *knot_b)
{
g_return_val_if_fail (knot_a != NULL, FALSE);
g_return_val_if_fail (knot_b != NULL, FALSE);
if (knot_a == knot_b)
return TRUE;
return knot_a->x == knot_b->x && knot_a->y == knot_b->y;
}
GType
clutter_knot_get_type (void)
{
static GType our_type = 0;
if (G_UNLIKELY (!our_type))
{
our_type =
g_boxed_type_register_static ("ClutterKnot",
(GBoxedCopyFunc) clutter_knot_copy,
(GBoxedFreeFunc) clutter_knot_free);
}
return our_type;
}
G_DEFINE_ABSTRACT_TYPE (ClutterBehaviour,
clutter_behaviour,
G_TYPE_OBJECT);

15
clutter/clutter-behaviour.h
View File

@ -33,6 +33,21 @@
G_BEGIN_DECLS
#define CLUTTER_TYPE_KNOT (clutter_knot_get_type ())
typedef struct _ClutterKnot ClutterKnot;
struct _ClutterKnot
{
gint x,y;
};
GType clutter_knot_get_type (void) G_GNUC_CONST;
ClutterKnot *clutter_knot_copy (const ClutterKnot *knot);
void clutter_knot_free (ClutterKnot *knot);
gboolean clutter_knot_equal (const ClutterKnot *knot_a,
const ClutterKnot *knot_b);
#define CLUTTER_TYPE_BEHAVIOUR clutter_behaviour_get_type()
#define CLUTTER_BEHAVIOUR(obj) \

4
clutter/clutter-fixed.c
View File

@ -3,9 +3,9 @@
*
* An OpenGL based 'interactive canvas' library.
*
* Authored By Matthew Allum <mallum@openedhand.com>
* Authored By Tomas Frydrych <tf@openedhand.com>
*
* Copyright (C) 2006 OpenedHand
* Copyright (C) 2006, 2007 OpenedHand
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public

1
clutter/clutter-fixed.h
View File

@ -4,6 +4,7 @@
* An OpenGL based 'interactive canvas' library.
*
* Authored By Matthew Allum <mallum@openedhand.com>
* Tomas Frydrych <tf@openedhand.com>
*
* Copyright (C) 2006 OpenedHand
*

1
clutter/clutter.h
View File

@ -35,6 +35,7 @@
#include "clutter-behaviour.h"
#include "clutter-behaviour-opacity.h"
#include "clutter-behaviour-path.h"
#include "clutter-behaviour-bspline.h"
#include "clutter-behaviour-scale.h"
#include "clutter-stage.h"
#include "clutter-actor.h"

13
examples/Makefile.am
View File

@ -1,4 +1,4 @@
noinst_PROGRAMS = test super-oh behave
noinst_PROGRAMS = test super-oh behave test-text bspline
INCLUDES = -I$(top_srcdir)/
LDADD = $(top_builddir)/clutter/libclutter-@CLUTTER_FLAVOUR@-@CLUTTER_MAJORMINOR@.la
@ -21,6 +21,17 @@ behave_LDFLAGS = \
$(CLUTTER_LIBS) \
$(GCONF_LIBS)
test_text_SOURCES = test-text.c
test_text_CFLAGS = $(CLUTTER_CFLAGS) $(GCONF_CFLAGS)
test_text_LDFLAGS = \
$(CLUTTER_LIBS) \
$(GCONF_LIBS)
bspline_SOURCES = bspline.c
bspline_CFLAGS = $(CLUTTER_CFLAGS) $(GCONF_CFLAGS)
bspline_LDFLAGS = \
$(CLUTTER_LIBS) \
$(GCONF_LIBS)
EXTRA_DIST = redhand.png \
clutter-logo-800x600.png \

97
examples/bspline.c Normal file
View File

@ -0,0 +1,97 @@
#include <clutter/clutter.h>
#define MAGIC 0.551784
#define RADIUS 200
int
main (int argc, char *argv[])
{
ClutterTimeline *timeline;
ClutterAlpha *alpha;
ClutterBehaviour *p_behave;
ClutterActor *stage;
ClutterActor *hand;
ClutterColor stage_color = { 0xcc, 0xcc, 0xcc, 0xff };
GdkPixbuf *pixbuf;
guint i;
#if 1
/* Circular path defined using a spline consisting of 4 bezier curves */
ClutterKnot knots[] = {{ -RADIUS, 0 },
{ -RADIUS, RADIUS*MAGIC },
{ -RADIUS*MAGIC, RADIUS },
{ 0, RADIUS },
{ RADIUS*MAGIC, RADIUS },
{ RADIUS, RADIUS*MAGIC },
{ RADIUS, 0 },
{ RADIUS, -RADIUS*MAGIC },
{ RADIUS*MAGIC, -RADIUS },
{ 0, -RADIUS },
{ -RADIUS*MAGIC, -RADIUS },
{ -RADIUS, -RADIUS*MAGIC },
{ -RADIUS, 0}};
ClutterKnot origin = { 0, RADIUS };
#else
/* Approximation of a sine wave over <0,pi> */
ClutterKnot knots[] = {{ 0, 0 },
{ 2*RADIUS/3, 2*RADIUS*1.299 },
{ 4*RADIUS/3, 2*RADIUS*1.299 },
{ 2*RADIUS, 0 }};
ClutterKnot origin = { 0, 0};
#endif
clutter_init (&argc, &argv);
stage = clutter_stage_get_default ();
clutter_stage_hide_cursor (CLUTTER_STAGE (stage));
g_signal_connect (stage, "key-press-event",
G_CALLBACK (clutter_main_quit),
NULL);
pixbuf = gdk_pixbuf_new_from_file ("redhand.png", NULL);
if (!pixbuf)
g_error("pixbuf load failed");
clutter_stage_set_color (CLUTTER_STAGE (stage),
&stage_color);
/* Make a hand */
hand = clutter_texture_new_from_pixbuf (pixbuf);
clutter_actor_set_position (hand, 0, RADIUS);
clutter_actor_show (hand);
clutter_group_add (CLUTTER_GROUP (stage), hand);
/* Make a timeline */
timeline = clutter_timeline_new (100, 26); /* num frames, fps */
g_object_set (timeline, "loop", TRUE, 0);
/* Set an alpha func to power behaviour - ramp_inc is constant rise */
alpha = clutter_alpha_new_full (timeline,
CLUTTER_ALPHA_RAMP_INC,
NULL, NULL);
/* Make a path behaviour and apply that too */
p_behave =
clutter_behaviour_bspline_new (alpha, knots,
sizeof (knots)/sizeof(ClutterKnot));
clutter_behaviour_bspline_set_origin (CLUTTER_BEHAVIOUR_BSPLINE (p_behave),
&origin);
clutter_behaviour_apply (p_behave, hand);
/* start the timeline and thus the animations */
clutter_timeline_start (timeline);
clutter_actor_show_all (stage);
clutter_main();
g_object_unref (p_behave);
return 0;
}