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[InverseDynamics] Support for Jacobians & derivatives

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This change adds support for calculating Jacobians and
dot(Jacobian)*u terms, along with the required support for
the 3xN matrices in the standalone math library.
It also adds functions to compute kinematics only (position, velocity, accel).
To facilitate tests, the Cl also adds a RandomTreeCreator to create
randomized multibody trees.
Thanks to Thomas Buschmann for this contribution!
This commit is contained in:
Erwin Coumans
2016-08-25 16:24:28 -07:00
parent 7db9a020b9
commit ba8964c4ac
25 changed files with 1474 additions and 201 deletions
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8
Extras/InverseDynamics/btMultiBodyTreeCreator.hpp
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@@ -25,10 +25,10 @@ public:
/// \copydoc MultiBodyTreeCreator::getNumBodies
int getNumBodies(int *num_bodies) const;
///\copydoc MultiBodyTreeCreator::getBody
int getBody(const int body_index, int *parent_index, JointType *joint_type,
vec3 *parent_r_parent_body_ref, mat33 *body_T_parent_ref, vec3 *body_axis_of_motion,
idScalar *mass, vec3 *body_r_body_com, mat33 *body_I_body, int *user_int,
void **user_ptr) const;
int getBody(const int body_index, int *parent_index, JointType *joint_type,
vec3 *parent_r_parent_body_ref, mat33 *body_T_parent_ref,
vec3 *body_axis_of_motion, idScalar *mass, vec3 *body_r_body_com,
mat33 *body_I_body, int *user_int, void **user_ptr) const;
private:
// internal struct holding data extracted from btMultiBody