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Currently when converting from the legacy curve type to the new type, which happens during evaluation of every legacy curve object, the `CurveEval` type is used as an intermediate step. This involves copying all data twice, and allocating a bunch of temporary arrays. It's also another use of `CurveEval` that has to be removed before we remove the type. The main user difference besides the subtlety described below will be improved performance. **Invalid Handles and Types** One important note is that there are two cases (that I know of) where handles and handle types can be invalid in the old curve type. The first is animation, where animated handle positions don't necessary respect the types. The second is control points with a single aligned handle that didn't necessarily align with the other. In master (partially on purpose) the code corrects the first situation (which caused T98965). But it doesn't correct the second situation. It's trivial to correct for the second case with this patch (because of the eager calculation decided on in D14464), but this patch makes the choice not to correct for //either//. Though not correcting the handle types puts curves in an invalid state, it also adds flexibility by allowing that option. Users must understand that any deformation may correct invalid handles. Fixes T98965 Differential Revision: https://developer.blender.org/D15290 |
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.. 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 General 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.