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[clutter-alpha.c.0.patch] replace ClutterAngle with float

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This is just an update of the patch to reflect that fixed-to-float.sh now
replaces ClutterAngle usage with float.
This commit is contained in:
Robert Bragg 2009-01-07 16:22:45 +00:00
parent 65e7bc6363
commit 0ffb6f7aa5
1 changed files with 13 additions and 13 deletions
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26
fixed-to-float-patches/clutter-alpha.c.0.patch
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@ -18,7 +18,7 @@ index 3e4df4d..d508631 100644
x -= (512 * 512 / angle);
- sine = ((sinf (x) + offset) / 2)
- sine = ((sinf (x * (G_PI/180.0)) + offset) / 2)
+ sine = ((cogl_angle_sin (x) + offset) / 2)
* CLUTTER_ALPHA_MAX_ALPHA;
@ -79,7 +79,7 @@ index 3e4df4d..d508631 100644
ClutterTimeline * timeline;
gint frame;
gint n_frames;
- ClutterAngle x;
- float x;
- ClutterFixed sine;
+ float radians;
+ float sine;
@ -92,7 +92,7 @@ index 3e4df4d..d508631 100644
+ radians = ((float)frame / n_frames) * (G_PI / 2);
+ sine = sinf (radians);
- sine = sinf (x) * CLUTTER_ALPHA_MAX_ALPHA;
- sine = sinf (x * (G_PI/180.0)) * CLUTTER_ALPHA_MAX_ALPHA;
-
- return ((guint32) sine) >> COGL_FIXED_Q;
+ return (guint32) (sine * CLUTTER_ALPHA_MAX_ALPHA);
@ -103,7 +103,7 @@ index 3e4df4d..d508631 100644
ClutterTimeline * timeline;
gint frame;
gint n_frames;
- ClutterAngle x;
- float x;
- ClutterFixed sine;
+ float radians;
+ float sine;
@ -114,7 +114,7 @@ index 3e4df4d..d508631 100644
- x = 256 * frame / n_frames + 256;
-
- sine = sinf (x) * CLUTTER_ALPHA_MAX_ALPHA;
- sine = sinf (x * (G_PI/180.0)) * CLUTTER_ALPHA_MAX_ALPHA;
+ radians = ((float)frame / n_frames) * (G_PI / 2);
+ sine = sinf (radians + (G_PI / 2));
@ -127,7 +127,7 @@ index 3e4df4d..d508631 100644
ClutterTimeline *timeline;
gint frame;
gint n_frames;
- ClutterAngle x;
- float x;
- ClutterFixed sine;
+ float radians;
+ float sine;
@ -138,7 +138,7 @@ index 3e4df4d..d508631 100644
- x = 512 * frame / n_frames;
-
- sine = sinf (x) * CLUTTER_ALPHA_MAX_ALPHA;
- sine = sinf (x * (G_PI/180.0)) * CLUTTER_ALPHA_MAX_ALPHA;
+ radians = ((float)frame / n_frames) * G_PI;
+ sine = sinf (radians);
@ -151,7 +151,7 @@ index 3e4df4d..d508631 100644
ClutterTimeline *timeline;
gint frame;
gint n_frames;
- ClutterAngle x;
- float x;
- ClutterFixed sine;
+ float radians;
+ float sine;
@ -165,7 +165,7 @@ index 3e4df4d..d508631 100644
+ radians = ((float)frame / n_frames) * (G_PI / 2);
+ sine = sinf (radians - (G_PI / 2));
- sine = (sinf (x) + 1) * CLUTTER_ALPHA_MAX_ALPHA;
- sine = (sinf (x * (G_PI/180.0)) + 1) * CLUTTER_ALPHA_MAX_ALPHA;
+ /* shift from range [-1, 0] -> [0, 1] */
+ sine = sine + 1.0;
@ -178,7 +178,7 @@ index 3e4df4d..d508631 100644
ClutterTimeline *timeline;
gint frame;
gint n_frames;
- ClutterAngle x;
- float x;
- ClutterFixed sine;
+ float radians;
+ float sine;
@ -191,7 +191,7 @@ index 3e4df4d..d508631 100644
+ radians = ((float)frame / n_frames) * (G_PI / 2);
+ sine = sinf (radians);
- sine = sinf (x) * CLUTTER_ALPHA_MAX_ALPHA;
- sine = sinf (x * (G_PI/180.0)) * CLUTTER_ALPHA_MAX_ALPHA;
-
- return ((guint32) sine) >> COGL_FIXED_Q;
+ return (guint32) (sine * CLUTTER_ALPHA_MAX_ALPHA);
@ -202,7 +202,7 @@ index 3e4df4d..d508631 100644
ClutterTimeline *timeline;
gint frame;
gint n_frames;
- ClutterAngle x;
- float x;
- ClutterFixed sine;
+ float radians;
+ float sine;
@ -215,7 +215,7 @@ index 3e4df4d..d508631 100644
+ radians = ((float)frame / n_frames) * G_PI;
+ sine = sinf (radians - (G_PI / 2));
- sine = (sinf (x) + 1) / 2 * CLUTTER_ALPHA_MAX_ALPHA;
- sine = (sinf (x * (G_PI/180.0)) + 1) / 2 * CLUTTER_ALPHA_MAX_ALPHA;
+ /* shift from range [-1, 1] -> [0, 1] */
+ sine = (sine + 1.0) / 2.0;