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ephysics: implement rotation quartenion getter 

So it's possible to create a custom body update callback using
it with evas_map_util_quat_rotate().



SVN revision: 78010
This commit is contained in:
Bruno Dilly 2012-10-15 21:53:56 +00:00
parent 05dab66b0b
commit 66b8ca8afc
2 changed files with 42 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
legacy/ephysics/src/lib/EPhysics.h
View File

@ -2924,6 +2924,7 @@ EAPI void ephysics_body_linear_movement_enable_get(const EPhysics_Body *body, Ei
* @param rot_z The amount of degrees @p body is rotated on z axis.
*
* @see ephysics_body_rotation_set()
* @see ephysics_body_rotation_quaternion_get()
*
* @ingroup EPhysics_Body
*/
@ -2949,6 +2950,24 @@ EAPI void ephysics_body_rotation_get(const EPhysics_Body *body, double *rot_x, d
*/
EAPI void ephysics_body_rotation_set(EPhysics_Body *body, double rot_x, double rot_y, double rot_z);
/**
* @brief
* Get body's normalized rotation quaternion (x, y, z and w).
*
* @param body The physics body.
* @param x the x component of the imaginary part of the quaternion.
* @param y the y component of the imaginary part of the quaternion.
* @param z the z component of the imaginary part of the quaternion.
* @param w the w component of the real part of the quaternion.
*
* @see ephysics_body_rotation_set()
* @see ephysics_body_rotation_get()
*
* @ingroup EPhysics_Body
*/
EAPI void
ephysics_body_rotation_quaternion_get(const EPhysics_Body *body, double *x, double *y, double *z, double *w);
/**
* @brief
* Set data to @p body.
@ -3169,7 +3188,7 @@ EAPI void ephysics_body_forces_clear(EPhysics_Body *body);
*
* If a body of width = 30, height = 20 and depth = 20, and has the center of
* mass at x component = 20, y component = 10 and z = 10, it will return
* @p x = 0.666, @p y = 0.5 and @z = 0.5.
* @p x = 0.666, @p y = 0.5 and @p z = 0.5.
*
* For primitive shapes, like box and circle, the center of mass
* is (0.5, 0.5, 0.5).

22
legacy/ephysics/src/lib/ephysics_body.cpp
View File

@ -2611,6 +2611,28 @@ ephysics_body_rotation_set(EPhysics_Body *body, double rot_x, double rot_y, doub
ephysics_world_lock_release(body->world);
}
EAPI void
ephysics_body_rotation_quaternion_get(const EPhysics_Body *body, double *x, double *y, double *z, double *w)
{
btTransform trans;
btQuaternion quat;
if (!body)
{
ERR("Can't get rotation, body is null.");
return;
}
trans = _ephysics_body_transform_get(body);
quat = trans.getRotation();
quat.normalize();
if (x) *x = quat.x();
if (y) *y = quat.y();
if (z) *z = quat.z();
if (w) *w = -quat.w();
}
EAPI void
ephysics_body_data_set(EPhysics_Body *body, void *data)
{