GEO_add_curves_on_mesh.hh

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/* SPDX-FileCopyrightText: 2023 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#pragma once
 
#include "BLI_math_vector_types.hh"
#include "BLI_span.hh"
 
#include "BKE_curves.hh"
 
#include "GEO_reverse_uv_sampler.hh"
 
struct Mesh;
struct KDTree_3d;
 
namespace blender::geometry {
 
struct AddCurvesOnMeshInputs {
  Span<float2> uvs;

  bool interpolate_length = false;
  bool interpolate_radius = false;
  bool interpolate_shape = false;
  bool interpolate_point_count = false;
  bool interpolate_resolution = false;
  float fallback_curve_length = 0.0f;
  float fallback_curve_radius = 0.0f;
  int fallback_point_count = 0;

  const Mesh *surface = nullptr;
  Span<int3> surface_corner_tris;
  const ReverseUVSampler *reverse_uv_sampler = nullptr;
  Span<float3> corner_normals_su;
 
  bke::CurvesSurfaceTransforms *transforms = nullptr;

  KDTree_3d *old_roots_kdtree = nullptr;
 
  bool r_uv_error = false;
};
 
struct AddCurvesOnMeshOutputs {
  bool uv_error = false;
  IndexRange new_curves_range;
  IndexRange new_points_range;
};

AddCurvesOnMeshOutputs add_curves_on_mesh(bke::CurvesGeometry &curves,
                                          const AddCurvesOnMeshInputs &inputs);
 
float3 compute_surface_point_normal(const int3 &tri,
                                    const float3 &bary_coord,
                                    Span<float3> corner_normals);
 
}  // namespace blender::geometry