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Attribute copying often uses identical logic for copying selected
elements or copying with an index map. Instead of reimplementing
this in each file, use the common implementation in the array_utils
namespace. This makes the commonality more obvious, gives improved
performance (this implementation is multithreaded), reduces binary
size (I observed a 173KB reduction), and probably reduces compile time.
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Add new functions to `array_utils` namespace called `gather(..)`.
Versions of `GVArray::materialize_compressed_to_uninitialized(..)` with
threading have been reimplemented locally in multiple geometry node
contexts. The purpose of this patch is therefore to:
* Assemble these implementations in a single file.
* Provide a naming convention that is easier to recognize.
Differential Revision: https://developer.blender.org/D15786
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Missed in eaf416693dcb
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The trim functionality is implemented in the geometry module, and
generalized a bit to be potentially useful for bisecting in the future.
The implementation is based on a helper type called `IndexRangeCyclic`
which allows iteration over all control points between two points on a
curve.
Catmull Rom curves are now supported-- trimmed without resampling first.
However, maintaining the exact shape is not possible. NURBS splines are
still converted to polylines using the evaluated curve concept.
Performance is equivalent or faster then a 3.1 build with regards to
node timings. Compared to 3.3 and 3.2, it's easy to observe test cases
where the node is at least 3 or 4 times faster.
Differential Revision: https://developer.blender.org/D14481
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