forked from bartvdbraak/blender
Sybren A. Stüvel
10162d68e3
This fixes {T70269}. Before this commit there was complicated code to try and compute the correct parent inverse matrix for the 'Child Of' and 'Object Solver' constraints outside the constraint evaluation. This was done mostly correctly, but did have some issues. The Set Inverse operator now defers this computation to be performed during constraint evaluation by just setting a flag. If the constraint is disabled, and thus tagging it for update in the depsgraph is not enough to trigger immediate evaluation, evaluation is forced by temporarily enabling it. This fix changes the way how the inverse matrix works when some of the channels of the constraint are disabled. Before this commit, the channel flags were used to filter both the parent and the inverse matrix. This meant that it was impossible to make an inverse matrix that would actually fully neutralize the effect of the constraint. Now only the parent matrix is filtered, while inverse is applied fully. As a result, pressing the 'Set Inverse' matrix produces the same transformation as disabling the constraint. This is also reflected in the changed values in the 'Child Of' unit test. This change is not backward compatible, but it should be OK because the old way was effectively unusable, so it is unlikely anybody relied on it. The change in matrix for the Object Solver constraint is due to a different method of computing it, which caused a slightly different floating point error that was slightly bigger than allowed by the test, so I updated the matrix values there as well. This patch was original written by @angavrilov and subsequently updated by me. Differential Revision: https://developer.blender.org/D6091 |
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readme.rst |
.. Keep this document short & concise, linking to external resources instead of including content in-line. See 'release/text/readme.html' for the end user read-me. Blender ======= Blender is the free and open source 3D creation suite. It supports the entirety of the 3D pipeline-modeling, rigging, animation, simulation, rendering, compositing, motion tracking and video editing. .. figure:: https://code.blender.org/wp-content/uploads/2018/12/springrg.jpg :scale: 50 % :align: center Project Pages ------------- - `Main Website <http://www.blender.org>`__ - `Reference Manual <https://docs.blender.org/manual/en/latest/index.html>`__ - `User Community <https://www.blender.org/community/>`__ Development ----------- - `Build Instructions <https://wiki.blender.org/wiki/Building_Blender>`__ - `Code Review & Bug Tracker <https://developer.blender.org>`__ - `Developer Forum <https://devtalk.blender.org>`__ - `Developer Documentation <https://wiki.blender.org>`__ License ------- Blender as a whole is licensed under the GNU Public License, Version 3. Individual files may have a different, but compatible license. See `blender.org/about/license <https://www.blender.org/about/license>`__ for details.