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This is the last node to use the `CurveEval` type. Since the curve to
points node is basically the same as the resample node, now it just
reuses the resample code and moves the curve point `CustomData` to a
new point cloud at the end. I had to add support for sampling tangents
and normals to the resampling.
There is one behavior change: If the radius attribute doesn't exist,
the node won't set the radius to 1 for the output point cloud anymore.
Instead, the default radius for point clouds will be used.
That issue was similar to T99814.
Differential Revision: https://developer.blender.org/D16008
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Previously, things like materials, symmetry, and selection options
stored on `Curves` weren't copied to the result in nodes like the
subdivide and resample nodes. Now they are, which fixes some
unexpected behavior and allows visualization of the sculpt mode
selection.
In the realize instances and join nodes the behavior is the same as
for meshes, the parameters are taken from the first (top) input.
I also refactored some functions to return a `CurvesGeometry` by-value,
which makes it the responsibility of the node to copy the parameters.
That should make the algorithms more reusable in other situations.
Differential Revision: https://developer.blender.org/D15408
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The first change is reusing the same vector for all types. While we don't
generally optimize for the multi-type case, it doesn't hurt here. The
second change is avoiding calling the corresponding function if there
are no curves of a certain type. This avoids creating attributes for
types that aren't used, for example.
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This commit ports the "Set Spline Type" node to the new curves type.
Performance should be improved in similar ways to the other refactors
from the conversion task (T95443). Converting to and from Catmull Rom
curves is now supported. There are a few cases where a lot of work can
be skipped: when the number of points doesn't change, and when the
types already match the goal type.
The refactor has a few other explicit goals as well:
- Don't count on initialization of attribute arrays when they are
first allocated.
- Avoid copying the entire data-block when possible.
- Make decisions about which attributes to copy when changing curves
more obvious.
- Use higher-level methods to copy data between curve points.
- Optimize for the common cases of single types and full selections.
- Process selected curves of the same types in the same loop.
The Bezier to NURBS conversion is written by Piotr Makal (@pmakal).
Differential Revision: https://developer.blender.org/D14769
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This commit adds an option to interpolate the number of control points
in new curves based on the count in neighboring existing curves. The
idea is to provide a more automatic default than manually controlling
the number of points in a curve, so users don't have to think about
the resolution quite as much.
Internally, some utilities for creating new curves are extracted to a
new header file. These can be used for the various nodes and operators
that create new curves.
The top-bar UI will be adjusted in a separate patch, probably moving
all of the settings that affect the size and shape of the new curves
into a popover.
Differential Revision: https://developer.blender.org/D14877
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