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