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ClutterBehaviourEllipse api changes; z_camera calculation

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This commit is contained in:
Tomas Frydrych 2007-05-25 12:07:24 +00:00
parent d2efd34eb5
commit bf8996215e
16 changed files with 226 additions and 73 deletions
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32
ChangeLog
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@ -1,3 +1,35 @@
2007-05-25 Tomas Frydrych <tf@openedhand.com>
* clutter/clutter-actor.c:
* clutter/clutter-actor.h:
Renamed clutter_actor_scalex() to clutter_actor_set_scale_with_gravityx
Added floating point version clutter_actor_set_scale_with_gravity.
* clutter/clutter-units.h:
* clutter/clutter-actor.h:
typedef ClutterUnit
* clutter/clutter-fixed.h:
* clutter/clutter-stage.c:
CLUTTER_ANGLE_FROM_DEG(), CLUTTER_ANGLE_FROM_DEGX()
renamed CLUTTER_DEGF_TO_CLUTTER_ANGLE to CLUTTER_ANGLE_FROM_DEGF
* clutter/clutter-behaviour-ellipse.h:
* clutter/clutter-behaviour-ellipse.c:
* examples/behave.c:
(clutter_behaviour_ellipse_new):
Changed signature to take angles in degrees, and x,y offsets.
(clutter_behaviour_ellipse_newx):
Fixed version clutter_behaviour_ellipse_new.
(clutter_behaviour_ellipse_set_center):
(clutter_behaviour_ellipse_get_center):
Changed signature to take x,y coords instead of ClutterKnot.
clutter/cogl/gl/cogl.c:
clutter/cogl/gles/cogl.c:
(cogl_setup_viewport):
Added z_camera calculation.
2007-05-25 Matthew Allum <mallum@openedhand.com>
* Makefile.am:

28
clutter/clutter-actor.c
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@ -1428,7 +1428,31 @@ clutter_actor_get_scale (ClutterActor *self,
}
/**
* clutter_actor_scalex:
* clutter_actor_set_scale_with_gravity:
* @self: A #ClutterActor
* @scale_x: scaling factor for x axis
* @scale_y: scaling factor for y axis
* @gravity: #ClutterGravity to apply to scaling.
*
* Scales the actor by scale_x, scale_y taking into consideration the
* required gravity.
*
* Since: 0.4
*/
void
clutter_actor_set_scale_with_gravity (ClutterActor *self,
gfloat scale_x,
gfloat scale_y,
ClutterGravity gravity)
{
clutter_actor_set_scale_with_gravityx (self,
CLUTTER_FLOAT_TO_FIXED (scale_x),
CLUTTER_FLOAT_TO_FIXED (scale_y),
gravity);
}
/**
* clutter_actor_set_scale_with_gravityx:
* @self: A #ClutterActor
* @scale_x: #ClutterFixed scaling factor for x axis
* @scale_y: #ClutterFixed scaling factor for y axis
@ -1440,7 +1464,7 @@ clutter_actor_get_scale (ClutterActor *self,
* Since: 0.4
*/
void
clutter_actor_scalex (ClutterActor *self,
clutter_actor_set_scale_with_gravityx (ClutterActor *self,
ClutterFixed scale_x,
ClutterFixed scale_y,
ClutterGravity gravity)

10
clutter/clutter-actor.h
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@ -30,6 +30,7 @@
#include <glib-object.h>
#include <clutter/clutter-fixed.h>
#include <clutter/clutter-units.h>
G_BEGIN_DECLS
@ -101,7 +102,7 @@ typedef enum
CLUTTER_ACTOR_REALIZED = 1 << 2
} ClutterActorFlags;
struct _ClutterActorBox { gint32 x1, y1, x2, y2; };
struct _ClutterActorBox { ClutterUnit x1, y1, x2, y2; };
GType clutter_actor_box_get_type (void) G_GNUC_CONST;
@ -250,11 +251,16 @@ void clutter_actor_get_scale (ClutterActor *sel
gdouble *scale_x,
gdouble *scale_y);
void clutter_actor_scalex (ClutterActor *self,
void clutter_actor_set_scale_with_gravityx (ClutterActor *self,
ClutterFixed scale_x,
ClutterFixed scale_y,
ClutterGravity gravity);
void clutter_actor_set_scale_with_gravity (ClutterActor *self,
gfloat scale_x,
gfloat scale_y,
ClutterGravity gravity);
void clutter_actor_get_abs_size (ClutterActor *self,
guint *width,
guint *height);

113
clutter/clutter-behaviour-ellipse.c
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@ -217,7 +217,12 @@ clutter_behaviour_ellipse_set_property (GObject *gobject,
priv->b = g_value_get_int (value) >> 1;
break;
case PROP_CENTER:
clutter_behaviour_ellipse_set_center (el, g_value_get_boxed (value));
{
ClutterKnot * k = g_value_get_boxed (value);
if (k)
clutter_behaviour_ellipse_set_center (el, k->x, k->y);
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
@ -393,12 +398,13 @@ clutter_behaviour_ellipse_init (ClutterBehaviourEllipse * self)
/**
* clutter_behaviour_ellipse_new:
* @alpha: a #ClutterAlpha, or %NULL
* @center: center of the ellipse as #ClutterKnot
* @x: x coordinace of the center
* @y: y coordiance of the center
* @width: width of the ellipse
* @height: height of the ellipse
* @begin: #ClutterAngle at which movement begins
* @end: #ClutterAngle at which movement ends
* @tilt: #ClutterAngle with which the ellipse should be tilted around its
* @begin: angle in degrees at which movement begins
* @end: angle in degrees at which movement ends
* @tilt: angle in degrees with which the ellipse should be tilted around its
* center
*
* Creates a behaviour that drives actors along an elliptical path with
@ -412,34 +418,93 @@ clutter_behaviour_ellipse_init (ClutterBehaviourEllipse * self)
*/
ClutterBehaviour *
clutter_behaviour_ellipse_new (ClutterAlpha * alpha,
ClutterKnot * center,
gint x,
gint y,
gint width,
gint height,
ClutterAngle begin,
ClutterAngle end,
ClutterAngle tilt)
gdouble begin,
gdouble end,
gdouble tilt)
{
ClutterBehaviourEllipse *bc;
g_return_val_if_fail (alpha == NULL || CLUTTER_IS_ALPHA (alpha), NULL);
ClutterKnot center;
center.x = x;
center.y = y;
bc = g_object_new (CLUTTER_TYPE_BEHAVIOUR_ELLIPSE,
"alpha", alpha,
"center", center,
"center", &center,
"width", width,
"height", height,
"angle-begin", begin,
"angle-end", end,
"angle-tilt", tilt,
"angle-begin", CLUTTER_ANGLE_FROM_DEG (begin),
"angle-end", CLUTTER_ANGLE_FROM_DEG (end),
"angle-tilt", CLUTTER_ANGLE_FROM_DEG (tilt),
NULL);
return CLUTTER_BEHAVIOUR (bc);
}
/**
* clutter_behaviour_ellipse_newx:
* @alpha: a #ClutterAlpha, or %NULL
* @x: x coordinace of the center
* @y: y coordiance of the center
* @width: width of the ellipse
* @height: height of the ellipse
* @begin: #ClutterFixed angle in degrees at which movement begins
* @end: #ClutterFixed angle in degrees at which movement ends
* @tilt: #ClutterFixed angle in degrees with which the ellipse should be tilted around its
* center
*
* Creates a behaviour that drives actors along an elliptical path with
* given center, width and height; the movement begins at angle_begin and
* ends at angle_end; if angle_end > angle_begin, the movement is in
* counter-clockwise direction, clockwise other wise.
*
* Return value: a #ClutterBehaviour
*
* Since: 0.4
*/
ClutterBehaviour *
clutter_behaviour_ellipse_newx (ClutterAlpha * alpha,
gint x,
gint y,
gint width,
gint height,
ClutterFixed begin,
ClutterFixed end,
ClutterFixed tilt)
{
ClutterBehaviourEllipse *bc;
g_return_val_if_fail (alpha == NULL || CLUTTER_IS_ALPHA (alpha), NULL);
ClutterKnot center;
center.x = x;
center.y = y;
bc = g_object_new (CLUTTER_TYPE_BEHAVIOUR_ELLIPSE,
"alpha", alpha,
"center", &center,
"width", width,
"height", height,
"angle-begin", CLUTTER_ANGLE_FROM_DEGX (begin),
"angle-end", CLUTTER_ANGLE_FROM_DEGX (end),
"angle-tilt", CLUTTER_ANGLE_FROM_DEGX (tilt),
NULL);
return CLUTTER_BEHAVIOUR (bc);
}
/**
* clutter_behaviour_ellipse_set_center
* @self: a #ClutterBehaviourEllipse
* @knot: a #ClutterKnot center for the ellipse
* @x: x coordinace of centre
* @y: y coordinace of centre
*
* Sets the center of the elliptical path to the point represented by knot.
*
@ -447,12 +512,14 @@ clutter_behaviour_ellipse_new (ClutterAlpha * alpha,
*/
void
clutter_behaviour_ellipse_set_center (ClutterBehaviourEllipse * self,
ClutterKnot * knot)
gint x,
gint y)
{
if (self->priv->center.x != knot->x || self->priv->center.y != knot->y)
if (self->priv->center.x != x || self->priv->center.y != y)
{
g_object_ref (self);
self->priv->center = *knot;
self->priv->center.x = x;
self->priv->center.y = y;
g_object_notify (G_OBJECT (self), "center");
g_object_unref (self);
}
@ -461,7 +528,8 @@ clutter_behaviour_ellipse_set_center (ClutterBehaviourEllipse * self,
/**
* clutter_behaviour_ellipse_get_center
* @self: a #ClutterBehaviourEllipse
* @knot: a #ClutterKnot where to store the center of the ellipse
* @x: location to store the x coordinace of the center, or NULL
* @y: location to store the y coordinace of the center, or NULL
*
* Gets the center of the elliptical path path.
*
@ -469,9 +537,14 @@ clutter_behaviour_ellipse_set_center (ClutterBehaviourEllipse * self,
*/
void
clutter_behaviour_ellipse_get_center (ClutterBehaviourEllipse * self,
ClutterKnot * knot)
gint * x,
gint * y)
{
*knot = self->priv->center;
if (x)
*x = self->priv->center.x;
if (y)
*y = self->priv->center.y;
}

25
clutter/clutter-behaviour-ellipse.h
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@ -82,17 +82,30 @@ struct _ClutterBehaviourEllipseClass
GType clutter_behaviour_ellipse_get_type (void) G_GNUC_CONST;
ClutterBehaviour *clutter_behaviour_ellipse_new (ClutterAlpha * alpha,
ClutterKnot * center,
gint x,
gint y,
gint width,
gint height,
ClutterAngle start,
ClutterAngle end,
ClutterAngle tilt);
gdouble start,
gdouble end,
gdouble tilt);
ClutterBehaviour *clutter_behaviour_ellipse_newx (ClutterAlpha * alpha,
gint x,
gint y,
gint width,
gint height,
ClutterFixed start,
ClutterFixed end,
ClutterFixed tilt);
void clutter_behaviour_ellipse_set_center (ClutterBehaviourEllipse * self,
ClutterKnot * knot);
gint x,
gint y);
void clutter_behaviour_ellipse_get_center (ClutterBehaviourEllipse * bs,
ClutterKnot * knot);
gint * x,
gint * y);
void clutter_behaviour_ellipse_set_width (ClutterBehaviourEllipse * self,
gint width);

2
clutter/clutter-behaviour-scale.c
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@ -83,7 +83,7 @@ scale_frame_foreach (ClutterBehaviour *behaviour,
ClutterFixed scale = GPOINTER_TO_UINT (data);
ClutterGravity gravity = priv->gravity;
clutter_actor_scalex (actor, scale, scale, gravity);
clutter_actor_set_scale_with_gravityx (actor, scale, scale, gravity);
}
static void

11
clutter/clutter-fixed.h
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@ -46,6 +46,13 @@ typedef gint32 ClutterFixed;
*/
typedef gint32 ClutterAngle; /* angle such that 1024 == 2*PI */
#define CLUTTER_ANGLE_FROM_DEG(x) CLUTTER_FLOAT_TO_INT((x*1024.0)/360.0)
#define CLUTTER_ANGLE_FROM_DEGF(x) CLUTTER_FLOAT_TO_INT(((float)x*1024.0f)/360.0f)
#define CLUTTER_ANGLE_TO_DEGF(x) (((float)x * 360.0)/ 1024.0)
#define CLUTTER_ANGLE_FROM_DEGX(x) CFX_INT(((x*1024)/360) + CFX_HALF)
#define CFX_Q 16 /* Decimal part size in bits */
#define CFX_ONE (1 << CFX_Q) /* 1 */
#define CFX_HALF 32768
@ -135,10 +142,6 @@ typedef gint32 ClutterAngle; /* angle such that 1024 == 2*PI */
#define CLUTTER_FIXED_MUL(x,y) ((x) >> 8) * ((y) >> 8)
#define CLUTTER_FIXED_DIV(x,y) ((((x) << 8)/(y)) << 8)
#define CLUTTER_DEGF_TO_CLUTTER_ANGLE(x) CLUTTER_FLOAT_TO_INT ((x / 360.0) * 1024)
#define CLUTTER_ANGLE_TO_DEGF(x) (((float)x * 360.0)/ 1024.0)
/* some handy short aliases to avoid exessively long lines */
#define CFX_INT CLUTTER_FIXED_INT

2
clutter/clutter-stage.c
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@ -557,7 +557,7 @@ clutter_stage_set_perspective (ClutterStage *stage,
g_return_if_fail (CLUTTER_IS_STAGE (stage));
priv = stage->priv;
priv->perspective.fovy = CLUTTER_DEGF_TO_CLUTTER_ANGLE(fovy);
priv->perspective.fovy = CLUTTER_ANGLE_FROM_DEGF(fovy);
priv->perspective.aspect = CLUTTER_FLOAT_TO_FIXED(aspect);
priv->perspective.z_near = CLUTTER_FLOAT_TO_FIXED(z_near);
priv->perspective.z_far = CLUTTER_FLOAT_TO_FIXED(z_far);

6
clutter/clutter-units.h
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@ -49,6 +49,10 @@
#include <clutter/clutter-fixed.h>
G_BEGIN_DECLS
typedef gint32 ClutterUnit;
/*
* Currently CLUTTER_UNIT maps directly onto ClutterFixed. Nevertheless, the
* _FROM_FIXED and _TO_FIXED macros should always be used in case that we
@ -71,4 +75,6 @@
#define CLUTTER_UNITS_FROM_PANGO_UNIT(x) (x << 6)
G_END_DECLS
#endif /* _HAVE_CLUTTER_UNITS_H */

6
clutter/cogl/gl/cogl.c
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@ -549,6 +549,8 @@ cogl_setup_viewport (guint width,
ClutterFixed z_near,
ClutterFixed z_far)
{
GLfloat z_camera;
GE( glViewport (0, 0, width, height) );
GE( glMatrixMode (GL_PROJECTION) );
@ -562,7 +564,9 @@ cogl_setup_viewport (guint width,
/* camera distance from screen, 0.5 * tan (FOV) */
#define DEFAULT_Z_CAMERA 0.866025404f
GE( glTranslatef (-0.5f, -0.5f, -DEFAULT_Z_CAMERA) );
z_camera = CLUTTER_FIXED_TO_FLOAT (clutter_tani (fovy) >> 1);
GE( glTranslatef (-0.5f, -0.5f, -z_camera) );
GE( glScalef ( 1.0f / width,
-1.0f / height,
1.0f / width) );

6
clutter/cogl/gles/cogl.c
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@ -489,6 +489,7 @@ cogl_setup_viewport (guint w,
{
gint width = (gint) w;
gint height = (gint) h;
ClutterFixed z_camera;
GE( glViewport (0, 0, width, height) );
GE( glMatrixMode (GL_PROJECTION) );
@ -505,10 +506,9 @@ cogl_setup_viewport (guint w,
/* camera distance from screen, 0.5 * tan (FOV) */
#define DEFAULT_Z_CAMERA 0.866025404f
z_camera = clutter_tani (fovy) << 1;
GE( glTranslatex (-1 << 15,
-1 << 15,
-CLUTTER_FLOAT_TO_FIXED(DEFAULT_Z_CAMERA)) );
GE( glTranslatex (-1 << 15, -1 << 15, -z_camera );
GE( glScalex ( CFX_ONE / width,
-CFX_ONE / height,

9
doc/reference/tmpl/clutter-behaviour-ellipse.sgml
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@ -79,7 +79,8 @@ ClutterBehaviourEllipse
</para>
@alpha:
@center:
@x:
@y:
@width:
@height:
@start:
@ -94,7 +95,8 @@ ClutterBehaviourEllipse
</para>
@self:
@knot:
@x:
@y:
<!-- ##### FUNCTION clutter_behaviour_ellipse_get_center ##### -->
@ -103,7 +105,8 @@ ClutterBehaviourEllipse
</para>
@bs:
@knot:
@x:
@y:
<!-- ##### FUNCTION clutter_behaviour_ellipse_get_angle_begin ##### -->

1
doc/reference/tmpl/clutter-feature.sgml
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@ -24,6 +24,7 @@ clutter-feature
@CLUTTER_FEATURE_TEXTURE_RECTANGLE:
@CLUTTER_FEATURE_SYNC_TO_VBLANK:
@CLUTTER_FEATURE_TEXTURE_YUV:
@CLUTTER_FEATURE_TEXTURE_READ_PIXELS:
<!-- ##### FUNCTION clutter_feature_available ##### -->

4
doc/reference/tmpl/clutter-stage.sgml
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@ -38,8 +38,8 @@ Macro evaluating to the height of the #ClutterStage
@fovy:
@aspect:
@zNear:
@zFar:
@z_near:
@z_far:
<!-- ##### FUNCTION clutter_perspective_copy ##### -->
<para>

16
doc/reference/tmpl/clutter-texture.sgml
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@ -116,20 +116,6 @@ ClutterTexture
@Returns:
<!-- ##### FUNCTION clutter_texture_set_from_data ##### -->
<para>
</para>
@texture:
@data:
@has_alpha:
@width:
@height:
@rowstride:
@bpp:
<!-- ##### FUNCTION clutter_texture_set_pixbuf ##### -->
<para>
@ -137,6 +123,8 @@ ClutterTexture
@texture:
@pixbuf:
@error:
@Returns:
<!-- ##### FUNCTION clutter_texture_get_pixbuf ##### -->

4
examples/behave.c
View File

@ -165,8 +165,8 @@ main (int argc, char *argv[])
break;
case PATH_ELLIPSE:
p_behave =
clutter_behaviour_ellipse_new (alpha, &origin, 400, 300,
0, 1024, 0);
clutter_behaviour_ellipse_new (alpha, 200, 200, 400, 300,
0.0, 360.0, 0.0);
break;
case PATH_BSPLINE: