9c7afe0c5b
Timelines no longer work in terms of a frame rate and a number of frames but instead just have a duration in milliseconds. This better matches the working of the master clock where if any timelines are running it will redraw as fast as possible rather than limiting to the lowest rated timeline. Most applications will just create animations and expect them to finish in a certain amount of time without caring about how many frames are drawn. If a frame is going to be drawn it might as well update all of the animations to some fraction of the total animation rather than rounding to the nearest whole frame. The 'frame_num' parameter of the new-frame signal is now 'msecs' which is a number of milliseconds progressed along the timeline. Applications should use clutter_timeline_get_progress instead of the frame number. Markers can now only be attached at a time value. The position is stored in milliseconds rather than at a frame number. test-timeline-smoothness and test-timeline-dup-frames have been removed because they no longer make sense.
297 lines
7.6 KiB
C
297 lines
7.6 KiB
C
#include <clutter/clutter.h>
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#include <math.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <glib.h>
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#include <gmodule.h>
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#define NHANDS 6
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typedef struct SuperOH
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{
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ClutterActor **hand, *bgtex;
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ClutterActor *real_hand;
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ClutterActor *group;
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ClutterActor *stage;
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gint stage_width;
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gint stage_height;
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gfloat radius;
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ClutterBehaviour *scaler_1;
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ClutterBehaviour *scaler_2;
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ClutterTimeline *timeline;
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} SuperOH;
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static gint n_hands = NHANDS;
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static GOptionEntry super_oh_entries[] = {
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{
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"num-hands", 'n',
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0,
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G_OPTION_ARG_INT, &n_hands,
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"Number of hands", "HANDS"
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},
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{ NULL }
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};
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/* input handler */
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static gboolean
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input_cb (ClutterActor *stage,
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ClutterEvent *event,
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gpointer data)
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{
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SuperOH *oh = data;
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if (event->type == CLUTTER_BUTTON_PRESS)
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{
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ClutterButtonEvent *button_event;
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ClutterActor *e;
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gfloat x, y;
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clutter_event_get_coords (event, &x, &y);
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button_event = (ClutterButtonEvent *) event;
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g_print ("*** button press event (button:%d) at %.2f, %.2f ***\n",
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button_event->button,
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x, y);
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e = clutter_stage_get_actor_at_pos (CLUTTER_STAGE (stage),
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CLUTTER_PICK_ALL,
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x, y);
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/* only allow hiding the clones */
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if (e && CLUTTER_IS_CLONE (e))
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{
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clutter_actor_hide (e);
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return TRUE;
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}
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}
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else if (event->type == CLUTTER_KEY_RELEASE)
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{
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ClutterKeyEvent *kev = (ClutterKeyEvent *) event;
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g_print ("*** key press event (key:%c) ***\n",
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clutter_key_event_symbol (kev));
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if (clutter_key_event_symbol (kev) == CLUTTER_q)
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{
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clutter_main_quit ();
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return TRUE;
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}
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else if (clutter_key_event_symbol (kev) == CLUTTER_r)
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{
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gint i;
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for (i = 0; i < n_hands; i++)
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clutter_actor_show (oh->hand[i]);
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clutter_actor_show (oh->real_hand);
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return TRUE;
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}
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}
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return FALSE;
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}
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/* Timeline handler */
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static void
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frame_cb (ClutterTimeline *timeline,
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gint frame_num,
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gpointer data)
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{
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SuperOH *oh = data;
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gint i;
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float rotation = clutter_timeline_get_progress (timeline) * 360.0f;
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/* Rotate everything clockwise about stage center*/
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clutter_actor_set_rotation (oh->group,
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CLUTTER_Z_AXIS,
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rotation,
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oh->stage_width / 2,
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oh->stage_height / 2,
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0);
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for (i = 0; i < n_hands; i++)
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{
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gdouble scale_x, scale_y;
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clutter_actor_get_scale (oh->hand[i], &scale_x, &scale_y);
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/* Rotate each hand around there centers - to get this we need
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* to take into account any scaling.
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*/
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clutter_actor_set_rotation (oh->hand[i],
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CLUTTER_Z_AXIS,
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-6.0 * rotation,
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0, 0, 0);
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}
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}
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static gdouble
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my_sine_wave (ClutterAlpha *alpha,
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gpointer dummy G_GNUC_UNUSED)
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{
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ClutterTimeline *timeline = clutter_alpha_get_timeline (alpha);
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gdouble progress = clutter_timeline_get_progress (timeline);
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return sin (progress * G_PI);
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}
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G_MODULE_EXPORT int
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test_actor_clone_main (int argc, char *argv[])
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{
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ClutterAlpha *alpha;
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ClutterActor *stage;
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ClutterColor stage_color = { 0x61, 0x64, 0x8c, 0xff };
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SuperOH *oh;
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gint i;
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GError *error;
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ClutterActor *real_hand, *tmp;
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ClutterColor clr = { 0xff, 0xff, 0x00, 0xff };
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error = NULL;
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clutter_init_with_args (&argc, &argv,
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NULL,
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super_oh_entries,
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NULL,
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&error);
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if (error)
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{
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g_warning ("Unable to initialise Clutter:\n%s",
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error->message);
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g_error_free (error);
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return EXIT_FAILURE;
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}
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stage = clutter_stage_get_default ();
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clutter_actor_set_size (stage, 800, 600);
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clutter_stage_set_title (CLUTTER_STAGE (stage), "Clone Test");
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clutter_stage_set_color (CLUTTER_STAGE (stage), &stage_color);
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oh = g_new (SuperOH, 1);
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/* Create a timeline to manage animation */
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oh->timeline = clutter_timeline_new (6000);
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clutter_timeline_set_loop (oh->timeline, TRUE);
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/* fire a callback for frame change */
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g_signal_connect (oh->timeline, "new-frame", G_CALLBACK (frame_cb), oh);
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/* Set up some behaviours to handle scaling */
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alpha = clutter_alpha_new_with_func (oh->timeline, my_sine_wave, NULL, NULL);
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oh->scaler_1 = clutter_behaviour_scale_new (alpha, 0.5, 0.5, 1.0, 1.0);
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oh->scaler_2 = clutter_behaviour_scale_new (alpha, 1.0, 1.0, 0.5, 0.5);
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tmp = clutter_texture_new_from_file ("redhand.png", &error);
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if (tmp == NULL)
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{
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g_error ("image load failed: %s", error->message);
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return EXIT_FAILURE;
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}
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clutter_actor_set_size (tmp, 300, 500);
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real_hand = clutter_group_new ();
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clutter_container_add_actor (CLUTTER_CONTAINER (real_hand), tmp);
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tmp = clutter_rectangle_new_with_color (&clr);
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clutter_actor_set_size (tmp, 100, 100);
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clutter_container_add_actor (CLUTTER_CONTAINER (real_hand), tmp);
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clutter_actor_set_scale (real_hand, 0.5, 0.5);
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oh->real_hand = real_hand;
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/* Now stick the group we want to clone into another group with a custom
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* opacity to verify that the clones don't traverse this parent when
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* calculating their opacity. */
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tmp = clutter_group_new ();
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clutter_actor_set_opacity (tmp, 0x80);
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clutter_container_add_actor (CLUTTER_CONTAINER (tmp), real_hand);
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clutter_container_add_actor (CLUTTER_CONTAINER (stage), tmp);
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/* now hide the group so that we can verify that hidden source actors
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* still get painted by the Clone
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*/
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clutter_actor_hide (real_hand);
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/* create a new group to hold multiple actors in a group */
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oh->group = clutter_group_new();
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oh->hand = g_new (ClutterActor*, n_hands);
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oh->stage_width = clutter_actor_get_width (stage);
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oh->stage_height = clutter_actor_get_height (stage);
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oh->radius = (oh->stage_width + oh->stage_height)
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/ n_hands;
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for (i = 0; i < n_hands; i++)
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{
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gint x, y, w, h;
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/* Create a texture from file, then clone in to same resources */
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oh->hand[i] = clutter_clone_new (real_hand);
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clutter_actor_set_size (oh->hand[i], 200, 213);
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/* Place around a circle */
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w = clutter_actor_get_width (oh->hand[0]);
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h = clutter_actor_get_height (oh->hand[0]);
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x = oh->stage_width / 2
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+ oh->radius
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* cos (i * G_PI / (n_hands / 2))
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- w / 2;
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y = oh->stage_height / 2
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+ oh->radius
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* sin (i * G_PI / (n_hands / 2))
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- h / 2;
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clutter_actor_set_position (oh->hand[i], x, y);
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clutter_actor_move_anchor_point_from_gravity (oh->hand[i],
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CLUTTER_GRAVITY_CENTER);
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/* Add to our group group */
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clutter_container_add_actor (CLUTTER_CONTAINER (oh->group), oh->hand[i]);
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if (i % 2)
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clutter_behaviour_apply (oh->scaler_1, oh->hand[i]);
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else
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clutter_behaviour_apply (oh->scaler_2, oh->hand[i]);
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}
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/* Add the group to the stage */
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clutter_container_add_actor (CLUTTER_CONTAINER (stage), oh->group);
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/* Show everying */
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clutter_actor_show (stage);
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g_signal_connect (stage, "button-press-event",
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G_CALLBACK (input_cb),
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oh);
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g_signal_connect (stage, "key-release-event",
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G_CALLBACK (input_cb),
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oh);
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/* and start it */
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clutter_timeline_start (oh->timeline);
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clutter_main ();
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/* clean up */
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g_object_unref (oh->scaler_1);
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g_object_unref (oh->scaler_2);
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g_object_unref (oh->timeline);
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g_free (oh->hand);
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g_free (oh);
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return EXIT_SUCCESS;
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}
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