Hans Goudey
fcdfc0a85b
If the resolution attribute exists, it needs to be set to a non-zero value for the newly added curves. While it might also make sense to interpolate the value from neighbor curves, for now it's simplest to just set it to the default value of 12. Pull Request #105094
66 lines
1.8 KiB
C++
66 lines
1.8 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma once
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#include "BLI_kdtree.h"
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#include "BLI_math_matrix_types.hh"
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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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bool interpolate_resolution = 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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