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mutter-performance-source/clutter/clutter-easing.h

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Move the easing functions to their own file Instead of having the easing functions be dependent of ClutterAlpha, and static to the clutter-alpha.c source file, we should make them generic and move them to their own internal header and source files. This will allow to re-use them in the near future.
2011-07-12 11:32:18 +00:00
#ifndef __CLUTTER_EASING_H__
#define __CLUTTER_EASING_H__
#include <clutter/clutter-types.h>
G_BEGIN_DECLS
/*< private >
* ClutterEasingFunc:
* @t: elapsed time
* @d: total duration
*
* Internal type for the easing functions used by Clutter.
*
* Return value: the interpolated value, between -1.0 and 2.0
*/
typedef double (* ClutterEasingFunc) (double t, double d);
easing: Add utility functions We end up copying the same array-of-modes-and-functions code in various places, so it's better to factor it out.
2012-04-11 13:11:28 +00:00
G_GNUC_INTERNAL
ClutterEasingFunc clutter_get_easing_func_for_mode (ClutterAnimationMode mode);
G_GNUC_INTERNAL
const char * clutter_get_easing_name_for_mode (ClutterAnimationMode mode);
G_GNUC_INTERNAL
double clutter_easing_for_mode (ClutterAnimationMode mode,
double t,
double d);
Move the easing functions to their own file Instead of having the easing functions be dependent of ClutterAlpha, and static to the clutter-alpha.c source file, we should make them generic and move them to their own internal header and source files. This will allow to re-use them in the near future.
2011-07-12 11:32:18 +00:00
G_GNUC_INTERNAL
double clutter_linear (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_in_quad (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_out_quad (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_in_out_quad (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_in_cubic (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_out_cubic (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_in_out_cubic (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_in_quart (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_out_quart (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_in_out_quart (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_in_quint (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_out_quint (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_in_out_quint (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_in_sine (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_out_sine (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_in_out_sine (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_in_expo (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_out_expo (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_in_out_expo (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_in_circ (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_out_circ (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_in_out_circ (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_in_elastic (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_out_elastic (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_in_out_elastic (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_in_back (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_out_back (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_in_out_back (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_in_bounce (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_out_bounce (double t,
double d);
G_GNUC_INTERNAL
double clutter_ease_in_out_bounce (double t,
double d);
timeline: Add support for step() progress The CSS3 Transitions specification from the W3C defines the possibility of using a parametrized step() timing function, with the following prototype: steps(n_steps, [ start | end ]) where @n_steps represents the number of steps used to divide an interval between 0 and 1; the 'start' and 'end' tokens describe whether the value change should happen at the start of the transition, or at the end. For instance, the "steps(3, start)" timing function has the following profile: 1 | x | | | x---| | ' | | x---' | | ' | 0 |---' | Whereas the "steps(3, end)" timing function has the following profile: 1 | x---| | ' | | x---' | | ' | x---' | | | 0 | | Since ClutterTimeline uses an enumeration for controlling the progress mode, we need additional API to define the parameters of the steps() progress; for this reason, we need a CLUTTER_STEPS enumeration value, and a method for setting the number of steps and the value transition policy. The CSS3 Transitions spec helpfully also defines a step-start and a step-end shorthands, which expand to step(1, start) and step(1, end) respectively; we can provide a CLUTTER_STEP_START and CLUTTER_STEP_END enumeration values for those.
2012-07-19 23:47:48 +00:00
G_GNUC_INTERNAL
double clutter_ease_steps_start (double t,
double d,
int steps);
G_GNUC_INTERNAL
double clutter_ease_steps_end (double t,
double d,
int steps);
timeline: Add cubic-bezier() progress functions Another progress function from the CSS3 Transitions specification, using a parametrices cubic bezier curve between (0, 0) and (1, 1) with two control points. (sadly, no ASCII art can approximate a cubic bezier, so no graph) The cubic-bezier() progress function comes with a bunch of preset easing modes: ease, ease-in, ease-out, and ease-in-out, that we can map to enumeration values.
2012-07-20 01:55:35 +00:00
G_GNUC_INTERNAL
double clutter_ease_cubic_bezier (double t,
double d,
double x_1,
double y_1,
double x_2,
double y_2);
timeline: Add support for step() progress The CSS3 Transitions specification from the W3C defines the possibility of using a parametrized step() timing function, with the following prototype: steps(n_steps, [ start | end ]) where @n_steps represents the number of steps used to divide an interval between 0 and 1; the 'start' and 'end' tokens describe whether the value change should happen at the start of the transition, or at the end. For instance, the "steps(3, start)" timing function has the following profile: 1 | x | | | x---| | ' | | x---' | | ' | 0 |---' | Whereas the "steps(3, end)" timing function has the following profile: 1 | x---| | ' | | x---' | | ' | x---' | | | 0 | | Since ClutterTimeline uses an enumeration for controlling the progress mode, we need additional API to define the parameters of the steps() progress; for this reason, we need a CLUTTER_STEPS enumeration value, and a method for setting the number of steps and the value transition policy. The CSS3 Transitions spec helpfully also defines a step-start and a step-end shorthands, which expand to step(1, start) and step(1, end) respectively; we can provide a CLUTTER_STEP_START and CLUTTER_STEP_END enumeration values for those.
2012-07-19 23:47:48 +00:00
Move the easing functions to their own file Instead of having the easing functions be dependent of ClutterAlpha, and static to the clutter-alpha.c source file, we should make them generic and move them to their own internal header and source files. This will allow to re-use them in the near future.
2011-07-12 11:32:18 +00:00
G_END_DECLS
#endif /* __CLUTTER_EASING_H__ */
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