Hans Goudey
c26616b2c1
Use the same `".selection"` attribute for both curve and point domains, instead of a different name for each. The attribute can now have either boolean or float type. Some tools create boolean selections. Other tools create float selections. Some tools "upgrade" the attribute from boolean to float. Edit mode tools that create selections from scratch can create boolean selections, but edit mode should generally be able to handle both selection types. Sculpt mode should be able to read boolean selections, but can also and write float values between zero and one. Theoretically we could just always use floats to store selections, but the type-agnosticism doesn't cost too much complexity given the existing APIs for dealing with it, and being able to use booleans is clearer in edit mode, and may allow future optimizations like more efficient ways to store boolean attributes. The attribute API is usually used directly for accessing the selection attribute. We rely on implicit type conversion and domain interpolation to simplify the rest of the code. Differential Revision: https://developer.blender.org/D16057
89 lines
2.5 KiB
C++
89 lines
2.5 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup editors
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*/
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#pragma once
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struct bContext;
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#ifdef __cplusplus
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extern "C" {
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#endif
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void ED_operatortypes_curves(void);
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#ifdef __cplusplus
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}
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#endif
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#ifdef __cplusplus
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# include "BKE_attribute.hh"
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# include "BLI_index_mask.hh"
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# include "BLI_vector.hh"
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# include "BLI_vector_set.hh"
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# include "BKE_curves.hh"
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namespace blender::ed::curves {
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bke::CurvesGeometry primitive_random_sphere(int curves_size, int points_per_curve);
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VectorSet<Curves *> get_unique_editable_curves(const bContext &C);
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void ensure_surface_deformation_node_exists(bContext &C, Object &curves_ob);
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/* -------------------------------------------------------------------- */
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/** \name Poll Functions
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* \{ */
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bool editable_curves_with_surface_poll(bContext *C);
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bool curves_with_surface_poll(bContext *C);
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bool editable_curves_poll(bContext *C);
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bool curves_poll(bContext *C);
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Selection
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*
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* Selection on curves can be stored on either attribute domain: either per-curve or per-point. It
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* can be stored with a float or boolean data-type. The boolean data-type is faster, smaller, and
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* corresponds better to edit-mode selections, but the float data type is useful for soft selection
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* (like masking) in sculpt mode.
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*
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* The attribute API is used to do the necessary type and domain conversions when necessary, and
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* can handle most interaction with the selection attribute, but these functions implement some
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* helpful utilities on top of that.
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* \{ */
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void fill_selection_false(GMutableSpan span);
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void fill_selection_true(GMutableSpan span);
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/**
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* Return true if any element is selected, on either domain with either type.
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*/
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bool has_anything_selected(const Curves &curves_id);
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/**
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* Find curves that have any point selected (a selection factor greater than zero),
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* or curves that have their own selection factor greater than zero.
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*/
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IndexMask retrieve_selected_curves(const Curves &curves_id, Vector<int64_t> &r_indices);
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/**
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* Find points that are selected (a selection factor greater than zero),
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* or points in curves with a selection factor greater than zero).
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*/
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IndexMask retrieve_selected_points(const Curves &curves_id, Vector<int64_t> &r_indices);
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/**
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* If the ".selection" attribute doesn't exist, create it with the requested type (bool or float).
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*/
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void ensure_selection_attribute(Curves &curves_id, const eCustomDataType create_type);
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/** \} */
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} // namespace blender::ed::curves
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#endif
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