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NURBS curves can be invalid when the order is less than the number of points, or in a few other situations. Currently the evaluated data of an invalid NURBS curve is empty. This is inconvenient because it requires checking for empty curves when it otherwise wouldn't be necessary. This patch replaces that fallback with copying the original data to the evaluated points. This makes conceptual sense too, as if the curve couldn't be evaluated-- which wouldn't necessarily delete it. Usually the UI protects against this happening, but it's currently possible to create an invalid curve with some operations like the delete geometry node. Differential Revision: https://developer.blender.org/D14837
.. 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.