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more evas_map utils, let's avoid duplicating these everywhere. 

SVN revision: 43612
This commit is contained in:
Gustavo Sverzut Barbieri 2009-11-11 12:33:52 +00:00
parent 6e22b36451
commit 3e08cf2e23
2 changed files with 191 additions and 1 deletions
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6
legacy/evas/src/lib/Evas.h
View File

@ -853,6 +853,12 @@ extern "C" {
EAPI void evas_object_map_set (Evas_Object *obj, const Evas_Map *map);
EAPI const Evas_Map *evas_object_map_get (const Evas_Object *obj);
EAPI void evas_map_util_points_populate_from_object_full (Evas_Map *m, const Evas_Object *obj, Evas_Coord z);
EAPI void evas_map_util_points_populate_from_object (Evas_Map *m, const Evas_Object *obj);
EAPI void evas_map_util_points_populate_from_geometry (Evas_Map *m, Evas_Coord x, Evas_Coord y, Evas_Coord w, Evas_Coord h, Evas_Coord z);
EAPI void evas_map_util_points_color_set (Evas_Map *m, int r, int g, int b, int a);
EAPI void evas_map_util_rotate (Evas_Map *m, double degrees, Evas_Coord cx, Evas_Coord cy);
EAPI void evas_map_util_zoom (Evas_Map *m, double zoomx, double zoomy, Evas_Coord cx, Evas_Coord cy);
EAPI void evas_map_util_3d_rotate (Evas_Map *m, double dx, double dy, double dz, Evas_Coord cx, Evas_Coord cy, Evas_Coord cz);

186
legacy/evas/src/lib/canvas/evas_map.c
View File

@ -440,6 +440,8 @@ evas_object_map_get(const Evas_Object *obj)
* @see evas_map_dup()
* @see evas_map_point_coord_set()
* @see evas_map_point_image_uv_set()
* @see evas_map_util_points_populate_from_object_full()
* @see evas_map_util_points_populate_from_object()
*
* @see evas_object_map_set()
*/
@ -573,6 +575,8 @@ evas_map_free(Evas_Map *m)
*
* @see evas_map_util_rotate()
* @see evas_map_util_zoom()
* @see evas_map_util_points_populate_from_object_full()
* @see evas_map_util_points_populate_from_object()
*/
EAPI void
evas_map_point_coord_set(Evas_Map *m, int idx, Evas_Coord x, Evas_Coord y, Evas_Coord z)
@ -632,6 +636,8 @@ evas_map_point_coord_get(const Evas_Map *m, int idx, Evas_Coord *x, Evas_Coord *
*
* @see evas_map_point_coord_set()
* @see evas_object_map_set()
* @see evas_map_util_points_populate_from_object_full()
* @see evas_map_util_points_populate_from_object()
*/
EAPI void
evas_map_point_image_uv_set(Evas_Map *m, int idx, double u, double v)
@ -685,7 +691,8 @@ evas_map_point_image_uv_get(const Evas_Map *m, int idx, double *u, double *v)
* @param g green (0 - 255)
* @param b blue (0 - 255)
* @param a alpha (0 - 255)
*
*
* @see evas_map_util_points_color_set()
* @see evas_map_point_coord_set()
* @see evas_object_map_set()
*/
@ -734,6 +741,183 @@ evas_map_point_color_get(const Evas_Map *m, int idx, int *r, int *g, int *b, int
/****************************************************************************/
/* util functions for manipulating maps, so you don't need to know the math */
/****************************************************************************/
static inline void
_evas_map_util_points_populate(Evas_Map *m, const Evas_Coord x, const Evas_Coord y, const Evas_Coord w, const Evas_Coord h, const Evas_Coord z)
{
Evas_Map_Point *p = m->points;
p[0].x = x;
p[0].y = y;
p[0].x = z;
p[0].u = 0.0;
p[0].v = 0.0;
p[1].x = x + w;
p[1].y = y;
p[1].x = z;
p[1].u = w;
p[1].v = 0.0;
p[2].x = x + w;
p[2].y = y + h;
p[2].x = z;
p[2].u = w;
p[2].v = h;
p[3].x = x;
p[3].y = y + h;
p[3].x = z;
p[3].u = 0.0;
p[3].v = h;
}
/**
* Populate source and destination map points to match exactly object.
*
* Usually one initialize map of an object to match it's original
* position and size, then transform these with evas_map_util_*
* functions, such as evas_map_util_rotate() or
* evas_map_util_3d_rotate(). The original set is done by this
* function, avoiding code duplication all around.
*
* @param m map to change all 4 points (must be of size 4).
* @param obj object to use unmapped geometry to populate map coordinates.
* @param z Point Z Coordinate hint (pre-perspective transform). This value
* will be used for all four points.
*
* @see evas_map_util_points_populate_from_object()
* @see evas_map_point_coord_set()
* @see evas_map_point_image_uv_set()
*/
EAPI void
evas_map_util_points_populate_from_object_full(Evas_Map *m, const Evas_Object *obj, Evas_Coord z)
{
MAGIC_CHECK(obj, Evas_Object, MAGIC_OBJ);
return;
MAGIC_CHECK_END();
if (!m)
{
ERR("map == NULL");
return;
}
if (m->count != 4)
{
ERR("map has count=%d where 4 was expected.", m->count);
return;
}
_evas_map_util_points_populate(m, obj->cur.geometry.x, obj->cur.geometry.y,
obj->cur.geometry.w, obj->cur.geometry.h, z);
}
/**
* Populate source and destination map points to match exactly object.
*
* Usually one initialize map of an object to match it's original
* position and size, then transform these with evas_map_util_*
* functions, such as evas_map_util_rotate() or
* evas_map_util_3d_rotate(). The original set is done by this
* function, avoiding code duplication all around.
*
* Z Point coordinate is assumed as 0 (zero).
*
* @param m map to change all 4 points (must be of size 4).
* @param obj object to use unmapped geometry to populate map coordinates.
*
* @see evas_map_util_points_populate_from_object_full()
* @see evas_map_util_points_populate_from_geometry()
* @see evas_map_point_coord_set()
* @see evas_map_point_image_uv_set()
*/
EAPI void
evas_map_util_points_populate_from_object(Evas_Map *m, const Evas_Object *obj)
{
MAGIC_CHECK(obj, Evas_Object, MAGIC_OBJ);
return;
MAGIC_CHECK_END();
if (!m)
{
ERR("map == NULL");
return;
}
if (m->count != 4)
{
ERR("map has count=%d where 4 was expected.", m->count);
return;
}
_evas_map_util_points_populate(m, obj->cur.geometry.x, obj->cur.geometry.y,
obj->cur.geometry.w, obj->cur.geometry.h, 0);
}
/**
* Populate source and destination map points to match given geometry.
*
* Similar to evas_map_util_points_populate_from_object_full(), this
* call takes raw values instead of querying object's unmapped
* geometry. The given width will be used to calculate destination
* points (evas_map_point_coord_set()) and set the image uv
* (evas_map_point_image_uv_set()).
*
* @param m map to change all 4 points (must be of size 4).
* @param x Point X Coordinate
* @param y Point Y Coordinate
* @param w width to use to calculate second and third points.
* @param h height to use to calculate third and fourth points.
* @param z Point Z Coordinate hint (pre-perspective transform). This value
* will be used for all four points.
*
* @see evas_map_util_points_populate_from_object()
* @see evas_map_point_coord_set()
* @see evas_map_point_image_uv_set()
*/
EAPI void
evas_map_util_points_populate_from_geometry(Evas_Map *m, Evas_Coord x, Evas_Coord y, Evas_Coord w, Evas_Coord h, Evas_Coord z)
{
if (!m)
{
ERR("map == NULL");
return;
}
if (m->count != 4)
{
ERR("map has count=%d where 4 was expected.", m->count);
return;
}
_evas_map_util_points_populate(m, x, y, w, h, z);
}
/**
* Set color of all points to given color.
*
* This call is useful to reuse maps after they had 3d lightning or
* any other colorization applied before.
*
* @param m map to change the color of.
* @param r red (0 - 255)
* @param g green (0 - 255)
* @param b blue (0 - 255)
* @param a alpha (0 - 255)
*
* @see evas_map_point_color_set()
*/
EAPI void
evas_map_util_points_color_set(Evas_Map *m, int r, int g, int b, int a)
{
Evas_Map_Point *p, *p_end;
if (!m)
{
ERR("map == NULL");
return;
}
p = m->points;
p_end = p + m->count;
for (; p < p_end; p++)
{
p->r = r;
p->g = g;
p->b = b;
p->a = a;
}
}
/**
* Change the map to apply the given rotation.