static gdouble
aisleriot_slot_sine_animation_mode (ClutterAlpha *alpha,
gpointer data)
{
ClutterTimeline *tl = clutter_alpha_get_timeline (alpha);
return sin (clutter_timeline_get_progress (tl) * G_PI);
}
gdouble
sine_alpha (ClutterAlpha *alpha,
gpointer dummy G_GNUC_UNUSED)
{
ClutterTimeline *timeline = clutter_alpha_get_timeline (alpha);
return sin (clutter_timeline_get_progress (timeline) * G_PI);
}
static gdouble
my_sine_wave (ClutterAlpha *alpha,
gpointer dummy G_GNUC_UNUSED)
{
ClutterTimeline *timeline = clutter_alpha_get_timeline (alpha);
gdouble progress = clutter_timeline_get_progress (timeline);
return sin (progress * G_PI);
}
/* This must return a value between 0 and 1.0
*
* This will be called as many times per seconds as specified in our call to clutter_timeline_new().
*
*/
gdouble
on_alpha (ClutterAlpha *alpha, gpointer data G_GNUC_UNUSED)
{
/* Get the position in the timeline,
* so we can base our value upon it:
*/
ClutterTimeline *timeline = clutter_alpha_get_timeline (alpha);
return clutter_timeline_get_progress (timeline);
}
static void
new_frame (ClutterTimeline *timeline,
gint frame_num,
ClutterActor *expander)
{
MxExpanderPrivate *priv = MX_EXPANDER (expander)->priv;
priv->progress = clutter_timeline_get_progress (priv->timeline);
clutter_actor_queue_relayout (expander);
}
gdouble
double_ramp_alpha (ClutterAlpha *alpha,
gpointer dummy G_GNUC_UNUSED)
{
ClutterTimeline *timeline = clutter_alpha_get_timeline (alpha);
gdouble progress = clutter_timeline_get_progress (timeline);
if (progress >= 0.5)
return 1.0 - progress;
return progress;
}
void
st_theme_node_transition_paint (StThemeNodeTransition *transition,
ClutterActorBox *allocation,
guint8 paint_opacity)
{
StThemeNodeTransitionPrivate *priv = transition->priv;
CoglColor constant;
float tex_coords[] = {
0.0, 0.0, 1.0, 1.0,
0.0, 0.0, 1.0, 1.0,
};
g_return_if_fail (ST_IS_THEME_NODE (priv->old_theme_node));
g_return_if_fail (ST_IS_THEME_NODE (priv->new_theme_node));
if (!clutter_actor_box_equal (allocation, &priv->last_allocation))
priv->needs_setup = TRUE;
if (priv->needs_setup)
{
priv->last_allocation = *allocation;
calculate_offscreen_box (transition, allocation);
priv->needs_setup = !setup_framebuffers (transition, allocation);
if (priv->needs_setup) /* setting up framebuffers failed */
return;
}
cogl_color_set_from_4f (&constant, 0., 0., 0.,
clutter_timeline_get_progress (priv->timeline));
cogl_material_set_layer_combine_constant (priv->material, 1, &constant);
cogl_material_set_color4ub (priv->material,
paint_opacity, paint_opacity,
paint_opacity, paint_opacity);
cogl_set_source (priv->material);
cogl_rectangle_with_multitexture_coords (priv->offscreen_box.x1,
priv->offscreen_box.y1,
priv->offscreen_box.x2,
priv->offscreen_box.y2,
tex_coords, 8);
}
static void
paint_cb (ClutterActor *self, ClutterTimeline *tl)
{
gint paint_index = (clutter_timeline_get_progress (tl)
* G_N_ELEMENTS (paint_func));
cogl_push_matrix ();
paint_func[paint_index] ();
cogl_translate (100, 100, 0);
cogl_set_source_color4ub (0, 160, 0, 255);
cogl_path_stroke_preserve ();
cogl_translate (150, 0, 0);
cogl_set_source_color4ub (200, 0, 0, 255);
cogl_path_fill ();
cogl_pop_matrix();
}
/* Timeline handler */
void
frame_cb (ClutterTimeline *timeline,
gint msecs,
gpointer data)
{
double rotation = clutter_timeline_get_progress (timeline) * 360.0;
gint i;
if (!do_rotate)
return;
/* Rotate everything clockwise about stage center */
clutter_actor_set_rotation_angle (group, CLUTTER_Z_AXIS, rotation);
for (i = 0; i < nwidgets; i++)
{
clutter_actor_set_rotation_angle (widgets[i], CLUTTER_Z_AXIS, - 2 * rotation);
clutter_actor_set_opacity (widgets[i], 50 * sin (2 * M_PI * rotation / 360) + (255 - 50));
}
}
/* Timeline handler */
static void
frame_cb (ClutterTimeline *timeline,
gint msecs,
gpointer data)
{
SuperOH *oh = (SuperOH *)data;
gint i;
guint rotation = clutter_timeline_get_progress (timeline) * 360.0f;
/* Rotate everything clockwise about stage center*/
clutter_actor_set_rotation_angle (oh->group, CLUTTER_Z_AXIS, rotation);
for (i = 0; i < NHANDS; i++)
{
/* rotate each hand around there centers */
clutter_actor_set_rotation_angle (oh->hand[i],
CLUTTER_Z_AXIS,
- 6.0 * rotation);
if (fade == TRUE)
clutter_actor_set_opacity (oh->hand[i], (255 - (rotation % 255)));
}
}
static void
interpolation_new_frame_cb (ClutterTimeline *timeline,
guint msecs,
MxAdjustment *adjustment)
{
gdouble new_value;
MxAdjustmentPrivate *priv = adjustment->priv;
new_value = priv->old_position +
(priv->new_position - priv->old_position) *
clutter_timeline_get_progress (priv->interpolation);
priv->interpolation = NULL;
mx_adjustment_set_value (adjustment, new_value);
priv->interpolation = timeline;
/* Stop the interpolation if we've reached the end of the adjustment */
if (!priv->elastic && priv->clamp_value &&
((new_value < priv->lower) ||
(new_value > (priv->upper - priv->page_size))))
stop_interpolation (adjustment);
}
static void
on_deceleration_new_frame (ClutterTimeline *timeline,
gint elapsed_time,
ClutterPanAction *self)
{
ClutterPanActionPrivate *priv = self->priv;
ClutterActor *actor;
gdouble progress;
gfloat interpolated_x, interpolated_y;
progress = clutter_timeline_get_progress (timeline);
interpolated_x = priv->target_x * progress;
interpolated_y = priv->target_y * progress;
priv->dx = interpolated_x - priv->interpolated_x;
priv->dy = interpolated_y - priv->interpolated_y;
priv->interpolated_x = interpolated_x;
priv->interpolated_y = interpolated_y;
actor = clutter_actor_meta_get_actor (CLUTTER_ACTOR_META (self));
emit_pan (self, actor, TRUE);
}
static void
frame_cb (ClutterTimeline *timeline,
gint elapsed_msecs,
TestState *state)
{
guint x, y;
float period_progress = clutter_timeline_get_progress (timeline);
float period_progress_sin = sinf (period_progress);
float wave_shift = period_progress * WAVE_SPEED;
float ripple_shift = period_progress * RIPPLE_SPEED;
for (y = 0; y <= MESH_HEIGHT; y++)
for (x = 0; x <= MESH_WIDTH; x++)
{
guint vert_index = (MESH_WIDTH + 1) * y + x;
float *vert = &state->quad_mesh_verts[3 * vert_index];
float real_x = x * QUAD_WIDTH;
float real_y = y * QUAD_HEIGHT;
float wave_offset = (float)x / (MESH_WIDTH + 1);
float wave_angle =
(WAVE_PERIODS * 2 * G_PI * wave_offset) + wave_shift;
float wave_sin = sinf (wave_angle);
float a_sqr = (RIPPLE_CENTER_X - real_x) * (RIPPLE_CENTER_X - real_x);
float b_sqr = (RIPPLE_CENTER_Y - real_y) * (RIPPLE_CENTER_Y - real_y);
float ripple_offset = sqrtf (a_sqr + b_sqr) / RIPPLE_RADIUS;
float ripple_angle =
(RIPPLE_PERIODS * 2 * G_PI * ripple_offset) + ripple_shift;
float ripple_sin = sinf (ripple_angle);
float h, s, l;
guint8 *color;
vert[2] = (wave_sin * WAVE_DEPTH) + (ripple_sin * RIPPLE_DEPTH);
/* Burn some CPU time picking a pretty color... */
h = (HSL_OFFSET
+ wave_sin
+ ripple_sin
+ period_progress_sin) * HSL_SCALE;
s = 0.5;
l = 0.25 + (period_progress_sin + 1.0) / 4.0;
color = &state->quad_mesh_colors[4 * vert_index];
/* A bit of a sneaky cast, but it seems safe to assume the ClutterColor
* typedef is set in stone... */
clutter_color_from_hls ((ClutterColor *)color, h * 360.0, l, s);
color[0] = (color[0] * color[3] + 128) / 255;
color[1] = (color[1] * color[3] + 128) / 255;
color[2] = (color[2] * color[3] + 128) / 255;
}
cogl_vertex_buffer_add (state->buffer,
"gl_Vertex",
3, /* n components */
COGL_ATTRIBUTE_TYPE_FLOAT,
FALSE, /* normalized */
0, /* stride */
state->quad_mesh_verts);
cogl_vertex_buffer_add (state->buffer,
"gl_Color",
4, /* n components */
COGL_ATTRIBUTE_TYPE_UNSIGNED_BYTE,
FALSE, /* normalized */
0, /* stride */
state->quad_mesh_colors);
cogl_vertex_buffer_submit (state->buffer);
clutter_actor_set_rotation (state->dummy,
CLUTTER_Z_AXIS,
360 * period_progress,
(MESH_WIDTH * QUAD_WIDTH) / 2,
(MESH_HEIGHT * QUAD_HEIGHT) / 2,
0);
clutter_actor_set_rotation (state->dummy,
CLUTTER_X_AXIS,
360 * period_progress,
(MESH_WIDTH * QUAD_WIDTH) / 2,
(MESH_HEIGHT * QUAD_HEIGHT) / 2,
0);
}