Commit Graph

8 Commits

Author SHA1 Message Date
Campbell Barton
081c1205a3 correct fsf address 2010-02-12 13:34:04 +00:00
Chris Want
5d0a207ecb Patch from GSR that a) fixes a whole bunch of GPL/BL license
blocks that were previously missed; and b) greatly increase my
ohloh stats!
2008-04-16 22:40:48 +00:00
Brecht Van Lommel
ae9dcb3dc2 Update SConscript.
Fix some warnings.
Merge with latest soc code.

What changed in IK lib:

Fully restructured, with components now as follows:
  - IK_Solver: C <=> C++ interface
  - IK_QSegment: base class for bone/segment with 0
    to 3 DOF
  - IK_QTask: base class for a task (currently there's
    a position and a rotation task)
  - IK_QJacobian: the Jacobian matrix, with SVD
    decomposition, damping, etc
  - IK_QJacobianSolver: the iterative solver

The exponential map parametrization is no longer used,
instead we have now:
  - 3DOF and 2DOF XZ segments: directly update matrix
    with Rodrigues' formula
  - Other: Euler angles (no worries about singularities
    here)

Computation of the Jacobian inverse has also changed:
  - The SVD algorithm is now based on LAPACK code,
    instead of NR, to avoid some problems with rounding
    errors.
  - When the problem is underconstrained (as is the case
    most of the time), the SVD is computed for the transpose
    of the Jacobian (faster).
  - A new damping algorithm called the Selectively Damped
    Least Squares is used, result in faster and more
    stable convergence.
  - Stiffness is implemented as if a weighted psuedo-inverse
    was used.

Tree structure support.

Rotation limits:
  - 3DOF and 2DOF XZ segments limits are based on a swing
    (direct axis-angle over XZ) and twist/roll (rotation
    over Y) decomposition. The swing region is an ellipse
    on a sphere.
  - Rotation limits are implemented using an inner clamping
    loop: as long as there is a violation, a violating DOF
    is clamped and removed from the Jacobian, and the solution
    is recomputed.

Convergence checking is based now on the max norm of angle
change, or the maximum number of iterations.
2005-08-27 13:45:19 +00:00
Kent Mein
f78de74b20 WooHoo me again ;)
I took out the following from the includes in the intern dir that still had
it:
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif

Kent
--
mein@cs.umn.edu
2002-12-26 18:25:17 +00:00
Kent Mein
4a9377a861 Gilles's patch to get rid of the the same identifier warnings
Kent
--
mein@cs.umn.edu
2002-12-14 15:38:45 +00:00
Kent Mein
0fbadc8eb7 Yes I did it again ;)
added the following 3 lines to everything in the intern dir:
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

Kent
--
mein@cs.umn.edu
2002-11-25 09:53:07 +00:00
Kent Mein
01bff70383 fixed spacing in the headers to get rid of some warnings and some other
little minor spacing issues.
2002-10-30 02:07:20 +00:00
Hans Lambermont
12315f4d0e Initial revision 2002-10-12 11:37:38 +00:00