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
65 lines
1.7 KiB
C++
65 lines
1.7 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma once
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#include "BLI_float4x4.hh"
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#include "BLI_kdtree.h"
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#include "BLI_math_vector.hh"
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#include "BLI_span.hh"
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#include "BKE_bvhutils.h"
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#include "BKE_curves.hh"
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#include "DNA_mesh_types.h"
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#include "DNA_meshdata_types.h"
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#include "GEO_reverse_uv_sampler.hh"
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namespace blender::geometry {
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struct AddCurvesOnMeshInputs {
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/** UV Coordinates at which the new curves should be added. */
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Span<float2> uvs;
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/** Determines shape of new curves. */
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bool interpolate_length = false;
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bool interpolate_shape = false;
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bool interpolate_point_count = false;
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float fallback_curve_length = 0.0f;
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int fallback_point_count = 0;
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/** Information about the surface that the new curves are attached to. */
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const Mesh *surface = nullptr;
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Span<MLoopTri> surface_looptris;
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const ReverseUVSampler *reverse_uv_sampler = nullptr;
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Span<float3> corner_normals_su;
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bke::CurvesSurfaceTransforms *transforms = nullptr;
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/**
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* KD-Tree that contains the root points of existing curves. This is only necessary when
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* interpolation is used.
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*/
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KDTree_3d *old_roots_kdtree = nullptr;
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bool r_uv_error = false;
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};
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struct AddCurvesOnMeshOutputs {
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bool uv_error = false;
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IndexRange new_curves_range;
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IndexRange new_points_range;
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};
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/**
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* Generate new curves on a mesh surface with the given inputs. Existing curves stay intact.
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*/
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AddCurvesOnMeshOutputs add_curves_on_mesh(bke::CurvesGeometry &curves,
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const AddCurvesOnMeshInputs &inputs);
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float3 compute_surface_point_normal(const MLoopTri &looptri,
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const float3 &bary_coord,
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const Span<float3> corner_normals);
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} // namespace blender::geometry
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