obj_export_nurbs.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_utility_mixins.hh"
 
#include "DNA_curve_types.h"
 
#include "IO_orientation.hh"
 
struct OBJExportParams;
 
namespace blender::io::obj {

class OBJCurve : NonCopyable {
 private:
  const Object *export_object_eval_;
  const Curve *export_curve_;
  float world_axes_transform_[4][4];
 
 public:
  OBJCurve(const Depsgraph *depsgraph, const OBJExportParams &export_params, Object *curve_object);
 
  const char *get_curve_name() const;
  int total_splines() const;
  const Nurb *get_spline(int spline_index) const;
  int total_spline_vertices(int spline_index) const;
  float3 vertex_coordinates(int spline_index, int vertex_index, float global_scale) const;
  int num_control_points_u(int spline_index) const;
  int num_control_points_v(int spline_index) const;
  int get_nurbs_degree_u(int spline_index) const;
  int get_nurbs_degree_v(int spline_index) const;
  short get_nurbs_flagu(int spline_index) const;
  Span<float> get_knots_u(int spline_index, Vector<float> &buffer) const;
 
 private:
  void set_world_axes_transform(eIOAxis forward, eIOAxis up);
};
 
}  // namespace blender::io::obj