rna_curve.cc

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/* SPDX-FileCopyrightText: 2023 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */

 
#include <cstdlib>
 
#include "DNA_curve_types.h"
#include "DNA_key_types.h"
#include "DNA_scene_types.h"
 
#include "BLI_math_rotation.h"
 
#include "BLT_translation.hh"
 
#include "RNA_define.hh"
#include "RNA_enum_types.hh"
 
#include "rna_internal.hh"
 
#include "WM_types.hh"
 
#ifndef RNA_RUNTIME
static const EnumPropertyItem beztriple_handle_type_items[] = {
    {HD_FREE, "FREE", 0, "Free", ""},
    {HD_VECT, "VECTOR", 0, "Vector", ""},
    {HD_ALIGN, "ALIGNED", 0, "Aligned", ""},
    {HD_AUTO, "AUTO", 0, "Auto", ""},
    {0, nullptr, 0, nullptr, nullptr},
};
#endif
 
const EnumPropertyItem rna_enum_keyframe_handle_type_items[] = {
    {HD_FREE, "FREE", ICON_HANDLE_FREE, "Free", "Completely independent manually set handle"},
    {HD_ALIGN,
     "ALIGNED",
     ICON_HANDLE_ALIGNED,
     "Aligned",
     "Manually set handle with rotation locked together with its pair"},
    {HD_VECT,
     "VECTOR",
     ICON_HANDLE_VECTOR,
     "Vector",
     "Automatic handles that create straight lines"},
    {HD_AUTO,
     "AUTO",
     ICON_HANDLE_AUTO,
     "Automatic",
     "Automatic handles that create smooth curves"},
    {HD_AUTO_ANIM,
     "AUTO_CLAMPED",
     ICON_HANDLE_AUTOCLAMPED,
     "Auto Clamped",
     "Automatic handles that create smooth curves which only change direction at keyframes"},
    {0, nullptr, 0, nullptr, nullptr},
};
 
/* NOTE: this is a near exact duplicate of `gpencil_interpolation_type_items`,
 * Changes here will likely apply there too. */
 
const EnumPropertyItem rna_enum_beztriple_interpolation_mode_items[] = {
    /* Interpolation. */
    RNA_ENUM_ITEM_HEADING(CTX_N_(BLT_I18NCONTEXT_ID_ACTION, "Interpolation"),
                          N_("Standard transitions between keyframes")),
    {BEZT_IPO_CONST,
     "CONSTANT",
     ICON_IPO_CONSTANT,
     "Constant",
     "No interpolation, value of A gets held until B is encountered"},
    {BEZT_IPO_LIN,
     "LINEAR",
     ICON_IPO_LINEAR,
     "Linear",
     "Straight-line interpolation between A and B (i.e. no ease in/out)"},
    {BEZT_IPO_BEZ,
     "BEZIER",
     ICON_IPO_BEZIER,
     "Bézier",
     "Smooth interpolation between A and B, with some control over curve shape"},
 
    /* Easing. */
    RNA_ENUM_ITEM_HEADING(CTX_N_(BLT_I18NCONTEXT_ID_ACTION, "Easing (by strength)"),
                          N_("Predefined inertial transitions, useful for motion graphics "
                             "(from least to most \"dramatic\")")),
    {BEZT_IPO_SINE,
     "SINE",
     ICON_IPO_SINE,
     "Sinusoidal",
     "Sinusoidal easing (weakest, almost linear but with a slight curvature)"},
    {BEZT_IPO_QUAD, "QUAD", ICON_IPO_QUAD, "Quadratic", "Quadratic easing"},
    {BEZT_IPO_CUBIC, "CUBIC", ICON_IPO_CUBIC, "Cubic", "Cubic easing"},
    {BEZT_IPO_QUART, "QUART", ICON_IPO_QUART, "Quartic", "Quartic easing"},
    {BEZT_IPO_QUINT, "QUINT", ICON_IPO_QUINT, "Quintic", "Quintic easing"},
    {BEZT_IPO_EXPO, "EXPO", ICON_IPO_EXPO, "Exponential", "Exponential easing (dramatic)"},
    {BEZT_IPO_CIRC,
     "CIRC",
     ICON_IPO_CIRC,
     "Circular",
     "Circular easing (strongest and most dynamic)"},
 
    RNA_ENUM_ITEM_HEADING(CTX_N_(BLT_I18NCONTEXT_ID_ACTION, "Dynamic Effects"),
                          N_("Simple physics-inspired easing effects")),
    {BEZT_IPO_BACK, "BACK", ICON_IPO_BACK, "Back", "Cubic easing with overshoot and settle"},
    {BEZT_IPO_BOUNCE,
     "BOUNCE",
     ICON_IPO_BOUNCE,
     "Bounce",
     "Exponentially decaying parabolic bounce, like when objects collide"},
    {BEZT_IPO_ELASTIC,
     "ELASTIC",
     ICON_IPO_ELASTIC,
     "Elastic",
     "Exponentially decaying sine wave, like an elastic band"},
 
    {0, nullptr, 0, nullptr, nullptr},
};
 
#ifndef RNA_RUNTIME
static const EnumPropertyItem curve_type_items[] = {
    {CU_POLY, "POLY", 0, "Poly", ""},
    {CU_BEZIER, "BEZIER", 0, "Bézier", ""},
    {CU_NURBS, "NURBS", 0, "Ease", ""},
    {0, nullptr, 0, nullptr, nullptr},
};
#endif
 
static const EnumPropertyItem curve3d_fill_mode_items[] = {
    {0, "FULL", 0, "Full", ""},
    {CU_BACK, "BACK", 0, "Back", ""},
    {CU_FRONT, "FRONT", 0, "Front", ""},
    {CU_FRONT | CU_BACK, "HALF", 0, "Half", ""},
    {0, nullptr, 0, nullptr, nullptr},
};
 
#ifdef RNA_RUNTIME
static const EnumPropertyItem curve2d_fill_mode_items[] = {
    {0, "NONE", 0, "None", ""},
    {CU_BACK, "BACK", 0, "Back", ""},
    {CU_FRONT, "FRONT", 0, "Front", ""},
    {CU_FRONT | CU_BACK, "BOTH", 0, "Both", ""},
    {0, nullptr, 0, nullptr, nullptr},
};
#endif
 
#ifdef RNA_RUNTIME
 
#  include <fmt/format.h>
 
#  include "DNA_object_types.h"
 
#  include "BLI_math_vector.h"
 
#  include "BKE_curve.hh"
#  include "BKE_curveprofile.h"
#  include "BKE_main.hh"
#  include "BKE_vfont.hh"
 
#  include "DEG_depsgraph.hh"
#  include "DEG_depsgraph_build.hh"
 
#  include "WM_api.hh"
 
#  include "MEM_guardedalloc.h"
 
#  include "ED_curve.hh" /* for BKE_curve_nurbs_get */
 
/* highly irritating but from RNA we can't know this */
static Nurb *curve_nurb_from_point(Curve *cu, const void *point, int *nu_index, int *pt_index)
{
  ListBase *nurbs = BKE_curve_nurbs_get(cu);
  Nurb *nu;
  int i = 0;
 
  for (nu = static_cast<Nurb *>(nurbs->first); nu; nu = nu->next, i++) {
    if (nu->type == CU_BEZIER) {
      if (point >= static_cast<void *>(nu->bezt) &&
          point < static_cast<void *>(nu->bezt + nu->pntsu))
      {
        break;
      }
    }
    else {
      if (point >= static_cast<void *>(nu->bp) &&
          point < static_cast<void *>(nu->bp + (nu->pntsu * nu->pntsv)))
      {
        break;
      }
    }
  }
 
  if (nu) {
    if (nu_index) {
      *nu_index = i;
    }
 
    if (pt_index) {
      if (nu->type == CU_BEZIER) {
        *pt_index = int(static_cast<const BezTriple *>(point) - nu->bezt);
      }
      else {
        *pt_index = int(static_cast<const BPoint *>(point) - nu->bp);
      }
    }
  }
 
  return nu;
}
 
static StructRNA *rna_Curve_refine(PointerRNA *ptr)
{
  const Curve *cu = static_cast<Curve *>(ptr->data);
  switch (cu->ob_type) {
    case OB_FONT: {
      return &RNA_TextCurve;
    }
    case OB_SURF: {
      return &RNA_SurfaceCurve;
    }
    default: {
      return &RNA_Curve;
    }
  }
}
 
static void rna_BezTriple_handle1_get(PointerRNA *ptr, float *values)
{
  BezTriple *bezt = static_cast<BezTriple *>(ptr->data);
  copy_v3_v3(values, bezt->vec[0]);
}
 
static void rna_BezTriple_handle1_set(PointerRNA *ptr, const float *values)
{
  BezTriple *bezt = static_cast<BezTriple *>(ptr->data);
  copy_v3_v3(bezt->vec[0], values);
}
 
static void rna_BezTriple_handle2_get(PointerRNA *ptr, float *values)
{
  BezTriple *bezt = static_cast<BezTriple *>(ptr->data);
  copy_v3_v3(values, bezt->vec[2]);
}
 
static void rna_BezTriple_handle2_set(PointerRNA *ptr, const float *values)
{
  BezTriple *bezt = static_cast<BezTriple *>(ptr->data);
  copy_v3_v3(bezt->vec[2], values);
}
 
static void rna_BezTriple_ctrlpoint_get(PointerRNA *ptr, float *values)
{
  BezTriple *bezt = static_cast<BezTriple *>(ptr->data);
  copy_v3_v3(values, bezt->vec[1]);
}
 
static void rna_BezTriple_ctrlpoint_set(PointerRNA *ptr, const float *values)
{
  BezTriple *bezt = static_cast<BezTriple *>(ptr->data);
  copy_v3_v3(bezt->vec[1], values);
}
 
static void rna_Curve_texspace_set(Main * /*bmain*/, Scene * /*scene*/, PointerRNA *ptr)
{
  Curve *cu = static_cast<Curve *>(ptr->data);
 
  if (cu->texspace_flag & CU_TEXSPACE_FLAG_AUTO) {
    BKE_curve_texspace_calc(cu);
  }
}
 
static int rna_Curve_texspace_editable(const PointerRNA *ptr, const char ** /*r_info*/)
{
  Curve *cu = static_cast<Curve *>(ptr->data);
  return (cu->texspace_flag & CU_TEXSPACE_FLAG_AUTO) ? PropertyFlag(0) : PROP_EDITABLE;
}
 
static void rna_Curve_texspace_location_get(PointerRNA *ptr, float *values)
{
  Curve *cu = static_cast<Curve *>(ptr->data);
 
  BKE_curve_texspace_ensure(cu);
 
  copy_v3_v3(values, cu->texspace_location);
}
 
static void rna_Curve_texspace_location_set(PointerRNA *ptr, const float *values)
{
  Curve *cu = static_cast<Curve *>(ptr->data);
 
  copy_v3_v3(cu->texspace_location, values);
}
 
static void rna_Curve_texspace_size_get(PointerRNA *ptr, float *values)
{
  Curve *cu = static_cast<Curve *>(ptr->data);
 
  BKE_curve_texspace_ensure(cu);
 
  copy_v3_v3(values, cu->texspace_size);
}
 
static void rna_Curve_texspace_size_set(PointerRNA *ptr, const float *values)
{
  Curve *cu = static_cast<Curve *>(ptr->data);
 
  copy_v3_v3(cu->texspace_size, values);
}
 
static void rna_Curve_material_index_range(
    PointerRNA *ptr, int *min, int *max, int * /*softmin*/, int * /*softmax*/)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  *min = 0;
  *max = max_ii(0, cu->totcol - 1);
}
 
/* simply offset by don't expose -1 */
static int rna_ChariInfo_material_index_get(PointerRNA *ptr)
{
  CharInfo *info = static_cast<CharInfo *>(ptr->data);
  return info->mat_nr ? info->mat_nr : 0;
}
 
static void rna_ChariInfo_material_index_set(PointerRNA *ptr, int value)
{
  CharInfo *info = static_cast<CharInfo *>(ptr->data);
  info->mat_nr = value;
}
 
static void rna_Curve_active_textbox_index_range(
    PointerRNA *ptr, int *min, int *max, int * /*softmin*/, int * /*softmax*/)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  *min = 0;
  *max = max_ii(0, cu->totbox - 1);
}
 
static void rna_Curve_dimension_set(PointerRNA *ptr, int value)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  if (value == CU_3D) {
    cu->flag |= CU_3D;
  }
  else {
    cu->flag &= ~CU_3D;
    BKE_curve_dimension_update(cu);
  }
}
 
static const EnumPropertyItem *rna_Curve_fill_mode_itemf(bContext * /*C*/,
                                                         PointerRNA *ptr,
                                                         PropertyRNA * /*prop*/,
                                                         bool * /*r_free*/)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
 
  /* cast to quiet warning it IS a const still */
  return static_cast<const EnumPropertyItem *>((cu->flag & CU_3D) ? curve3d_fill_mode_items :
                                                                    curve2d_fill_mode_items);
}
 
static int rna_Nurb_length(PointerRNA *ptr)
{
  Nurb *nu = static_cast<Nurb *>(ptr->data);
  if (nu->type == CU_BEZIER) {
    return 0;
  }
  return nu->pntsv > 0 ? nu->pntsu * nu->pntsv : nu->pntsu;
}
 
static void rna_Nurb_type_set(PointerRNA *ptr, int value)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  Nurb *nu = static_cast<Nurb *>(ptr->data);
  const int pntsu_prev = nu->pntsu;
 
  if (BKE_nurb_type_convert(nu, value, true, nullptr)) {
    if (nu->pntsu != pntsu_prev) {
      cu->actvert = CU_ACT_NONE;
    }
  }
}
 
static void rna_BPoint_array_begin(CollectionPropertyIterator *iter, PointerRNA *ptr)
{
  Nurb *nu = static_cast<Nurb *>(ptr->data);
  rna_iterator_array_begin(iter,
                           ptr,
                           static_cast<void *>(nu->bp),
                           sizeof(BPoint),
                           nu->pntsv > 0 ? nu->pntsu * nu->pntsv : nu->pntsu,
                           0,
                           nullptr);
}
 
static void rna_Curve_update_data_id(Main * /*bmain*/, Scene * /*scene*/, ID *id)
{
  DEG_id_tag_update(id, 0);
  WM_main_add_notifier(NC_GEOM | ND_DATA, id);
}
 
static void rna_Curve_update_data(Main *bmain, Scene *scene, PointerRNA *ptr)
{
  rna_Curve_update_data_id(bmain, scene, ptr->owner_id);
}
 
static void rna_Curve_update_deps(Main *bmain, Scene *scene, PointerRNA *ptr)
{
  DEG_relations_tag_update(bmain);
  rna_Curve_update_data(bmain, scene, ptr);
}
 
static void rna_Curve_update_points(Main *bmain, Scene *scene, PointerRNA *ptr)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  Nurb *nu = curve_nurb_from_point(cu, ptr->data, nullptr, nullptr);
 
  if (nu) {
    BKE_nurb_handles_calc(nu);
  }
 
  rna_Curve_update_data(bmain, scene, ptr);
}
 
static PointerRNA rna_Curve_bevelObject_get(PointerRNA *ptr)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  Object *ob = cu->bevobj;
 
  if (ob) {
    return RNA_id_pointer_create(reinterpret_cast<ID *>(ob));
  }
 
  return PointerRNA_NULL;
}
 
static void rna_Curve_bevelObject_set(PointerRNA *ptr, PointerRNA value, ReportList * /*reports*/)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  Object *ob = static_cast<Object *>(value.data);
 
  if (ob) {
    /* If bevel object has got the save curve, as object, for which it's set as bevobj,
     * there could be an infinite loop in curve evaluation. */
    if (ob->type == OB_CURVES_LEGACY && ob->data != cu) {
      cu->bevobj = ob;
      id_lib_extern(&ob->id);
    }
  }
  else {
    cu->bevobj = nullptr;
  }
}

static void rna_Curve_bevel_resolution_update(Main *bmain, Scene *scene, PointerRNA *ptr)
{
  Curve *cu = static_cast<Curve *>(ptr->data);
 
  if (cu->bevel_mode == CU_BEV_MODE_CURVE_PROFILE) {
    BKE_curveprofile_init(cu->bevel_profile, cu->bevresol + 1);
  }
 
  rna_Curve_update_data(bmain, scene, ptr);
}
 
static void rna_Curve_bevel_mode_set(PointerRNA *ptr, int value)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
 
  if (value == CU_BEV_MODE_CURVE_PROFILE) {
    if (cu->bevel_profile == nullptr) {
      cu->bevel_profile = BKE_curveprofile_add(PROF_PRESET_LINE);
      BKE_curveprofile_init(cu->bevel_profile, cu->bevresol + 1);
    }
  }
 
  cu->bevel_mode = value;
}
 
static bool rna_Curve_otherObject_poll(PointerRNA *ptr, PointerRNA value)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  Object *ob = static_cast<Object *>(value.data);
 
  if (ob) {
    if (ob->type == OB_CURVES_LEGACY && ob->data != cu) {
      return 1;
    }
  }
 
  return 0;
}
 
static PointerRNA rna_Curve_taperObject_get(PointerRNA *ptr)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  Object *ob = cu->taperobj;
 
  if (ob) {
    return RNA_id_pointer_create(reinterpret_cast<ID *>(ob));
  }
 
  return PointerRNA_NULL;
}
 
static void rna_Curve_taperObject_set(PointerRNA *ptr, PointerRNA value, ReportList * /*reports*/)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  Object *ob = static_cast<Object *>(value.data);
 
  if (ob) {
    /* If taper object has got the save curve, as object, for which it's set as bevobj,
     * there could be an infinite loop in curve evaluation. */
    if (ob->type == OB_CURVES_LEGACY && ob->data != cu) {
      cu->taperobj = ob;
      id_lib_extern(&ob->id);
    }
  }
  else {
    cu->taperobj = nullptr;
  }
}
 
static void rna_Curve_resolution_u_update_data(Main *bmain, Scene *scene, PointerRNA *ptr)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  ListBase *nurbs = BKE_curve_nurbs_get(cu);
 
  LISTBASE_FOREACH (Nurb *, nu, nurbs) {
    nu->resolu = cu->resolu;
  }
 
  rna_Curve_update_data(bmain, scene, ptr);
}
 
static void rna_Curve_resolution_v_update_data(Main *bmain, Scene *scene, PointerRNA *ptr)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  ListBase *nurbs = BKE_curve_nurbs_get(cu);
 
  LISTBASE_FOREACH (Nurb *, nu, nurbs) {
    nu->resolv = cu->resolv;
  }
 
  rna_Curve_update_data(bmain, scene, ptr);
}
 
static float rna_Curve_offset_get(PointerRNA *ptr)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  return cu->offset - 1.0f;
}
 
static void rna_Curve_offset_set(PointerRNA *ptr, float value)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  cu->offset = 1.0f + value;
}
 
static int rna_Curve_body_length(PointerRNA *ptr);
static void rna_Curve_body_get(PointerRNA *ptr, char *value)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  memcpy(value, cu->str, rna_Curve_body_length(ptr) + 1);
}
 
static int rna_Curve_body_length(PointerRNA *ptr)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  return cu->len;
}
 
/* TODO: how to handle editmode? */
static void rna_Curve_body_set(PointerRNA *ptr, const char *value)
{
  size_t len_bytes;
  size_t len_chars = BLI_strlen_utf8_ex(value, &len_bytes);
 
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
 
  cu->len_char32 = len_chars;
  cu->len = len_bytes;
  cu->pos = len_chars;
 
  if (cu->str) {
    MEM_freeN(cu->str);
  }
  if (cu->strinfo) {
    MEM_freeN(cu->strinfo);
  }
 
  cu->str = MEM_malloc_arrayN<char>(len_bytes + sizeof(char32_t), "str");
  memcpy(cu->str, value, len_bytes + 1);
 
  cu->strinfo = MEM_calloc_arrayN<CharInfo>((len_chars + 4), "strinfo");
}
 
static void rna_Nurb_update_cyclic_u(Main *bmain, Scene *scene, PointerRNA *ptr)
{
  Nurb *nu = static_cast<Nurb *>(ptr->data);
 
  if (nu->type == CU_BEZIER) {
    BKE_nurb_handles_calc(nu);
  }
  else {
    BKE_nurb_knot_calc_u(nu);
  }
 
  rna_Curve_update_data(bmain, scene, ptr);
}
 
static void rna_Nurb_update_cyclic_v(Main *bmain, Scene *scene, PointerRNA *ptr)
{
  Nurb *nu = static_cast<Nurb *>(ptr->data);
 
  BKE_nurb_knot_calc_v(nu);
 
  rna_Curve_update_data(bmain, scene, ptr);
}
 
static void rna_Nurb_update_knot_u(Main *bmain, Scene *scene, PointerRNA *ptr)
{
  Nurb *nu = static_cast<Nurb *>(ptr->data);
 
  BKE_nurb_order_clamp_u(nu);
  BKE_nurb_knot_calc_u(nu);
 
  rna_Curve_update_data(bmain, scene, ptr);
}
 
static void rna_Nurb_update_knot_v(Main *bmain, Scene *scene, PointerRNA *ptr)
{
  Nurb *nu = static_cast<Nurb *>(ptr->data);
 
  BKE_nurb_order_clamp_v(nu);
  BKE_nurb_knot_calc_v(nu);
 
  rna_Curve_update_data(bmain, scene, ptr);
}
 
static void rna_Curve_spline_points_add(ID *id, Nurb *nu, ReportList *reports, int number)
{
  if (nu->type == CU_BEZIER) {
    BKE_report(reports, RPT_ERROR, "Bézier spline cannot have points added");
  }
  else if (number == 0) {
    /* do nothing */
  }
  else {
 
    BKE_nurb_points_add(nu, number);
 
    /* update */
    BKE_nurb_knot_calc_u(nu);
 
    rna_Curve_update_data_id(nullptr, nullptr, id);
  }
}
 
static void rna_Curve_spline_bezpoints_add(ID *id, Nurb *nu, ReportList *reports, int number)
{
  if (nu->type != CU_BEZIER) {
    BKE_report(reports, RPT_ERROR, "Only Bézier splines can be added");
  }
  else if (number == 0) {
    /* do nothing */
  }
  else {
    BKE_nurb_bezierPoints_add(nu, number);
 
    /* update */
    BKE_nurb_knot_calc_u(nu);
 
    rna_Curve_update_data_id(nullptr, nullptr, id);
  }
}
 
static Nurb *rna_Curve_spline_new(Curve *cu, int type)
{
  Nurb *nu = MEM_callocN<Nurb>("spline.new");
 
  if (type == CU_BEZIER) {
    BezTriple *bezt = MEM_callocN<BezTriple>("spline.new.bezt");
    bezt->radius = 1.0;
    nu->bezt = bezt;
  }
  else {
    BPoint *bp = MEM_callocN<BPoint>("spline.new.bp");
    bp->radius = 1.0f;
    nu->bp = bp;
  }
 
  nu->type = type;
  nu->pntsu = 1;
  nu->pntsv = 1;
 
  nu->orderu = nu->orderv = 4;
  nu->resolu = cu->resolu;
  nu->resolv = cu->resolv;
  nu->flag = CU_SMOOTH;
 
  BLI_addtail(BKE_curve_nurbs_get(cu), nu);
 
  return nu;
}
 
static void rna_Curve_spline_remove(Curve *cu, ReportList *reports, PointerRNA *nu_ptr)
{
  Nurb *nu = static_cast<Nurb *>(nu_ptr->data);
  ListBase *nurbs = BKE_curve_nurbs_get(cu);
 
  if (BLI_remlink_safe(nurbs, nu) == false) {
    BKE_reportf(reports, RPT_ERROR, "Curve '%s' does not contain spline given", cu->id.name + 2);
    return;
  }
 
  BKE_nurb_free(nu);
  nu_ptr->invalidate();
 
  DEG_id_tag_update(&cu->id, ID_RECALC_GEOMETRY);
  WM_main_add_notifier(NC_GEOM | ND_DATA, nullptr);
}
 
static void rna_Curve_spline_clear(Curve *cu)
{
  ListBase *nurbs = BKE_curve_nurbs_get(cu);
 
  BKE_nurbList_free(nurbs);
 
  DEG_id_tag_update(&cu->id, ID_RECALC_GEOMETRY);
  WM_main_add_notifier(NC_GEOM | ND_DATA, nullptr);
}
 
static PointerRNA rna_Curve_active_spline_get(PointerRNA *ptr)
{
  Curve *cu = static_cast<Curve *>(ptr->data);
  Nurb *nu;
  ListBase *nurbs = BKE_curve_nurbs_get(cu);
 
  /* For curve outside editmode will set to -1,
   * should be changed to be allowed outside of editmode. */
  nu = static_cast<Nurb *>(BLI_findlink(nurbs, cu->actnu));
 
  if (nu) {
    return RNA_pointer_create_with_parent(*ptr, &RNA_Spline, nu);
  }
 
  return PointerRNA_NULL;
}
 
static void rna_Curve_active_spline_set(PointerRNA *ptr,
                                        PointerRNA value,
                                        ReportList * /*reports*/)
{
  Curve *cu = static_cast<Curve *>(ptr->data);
  Nurb *nu = static_cast<Nurb *>(value.data);
  ListBase *nubase = BKE_curve_nurbs_get(cu);
 
  /* -1 is ok for an unset index */
  if (nu == nullptr) {
    cu->actnu = -1;
  }
  else {
    cu->actnu = BLI_findindex(nubase, nu);
  }
}
 
static std::optional<std::string> rna_Curve_spline_path(const PointerRNA *ptr)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  ListBase *nubase = BKE_curve_nurbs_get(cu);
  Nurb *nu = static_cast<Nurb *>(ptr->data);
  int index = BLI_findindex(nubase, nu);
 
  if (index >= 0) {
    return fmt::format("splines[{}]", index);
  }
  return "";
}
 
/* use for both bezier and nurbs */
static std::optional<std::string> rna_Curve_spline_point_path(const PointerRNA *ptr)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  Nurb *nu;
  void *point = ptr->data;
  int nu_index, pt_index;
 
  nu = curve_nurb_from_point(cu, point, &nu_index, &pt_index);
 
  if (nu) {
    if (nu->type == CU_BEZIER) {
      return fmt::format("splines[{}].bezier_points[{}]", nu_index, pt_index);
    }
    return fmt::format("splines[{}].points[{}]", nu_index, pt_index);
  }
  return "";
}
 
static std::optional<std::string> rna_TextBox_path(const PointerRNA *ptr)
{
  const Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  const TextBox *tb = static_cast<TextBox *>(ptr->data);
  int index = int(tb - cu->tb);
 
  if (index >= 0 && index < cu->totbox) {
    return fmt::format("text_boxes[{}]", index);
  }
  return "";
}
 
static void rna_Curve_splines_begin(CollectionPropertyIterator *iter, PointerRNA *ptr)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  rna_iterator_listbase_begin(iter, ptr, BKE_curve_nurbs_get(cu), nullptr);
}
 
static bool rna_Curve_is_editmode_get(PointerRNA *ptr)
{
  const Curve *cu = reinterpret_cast<const Curve *>(ptr->owner_id);
  if (cu->ob_type == OB_FONT) {
    return (cu->editfont != nullptr);
  }
  else {
    return (cu->editnurb != nullptr);
  }
}
 
static bool rna_TextCurve_is_select_bold_get(PointerRNA *ptr)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  if (cu->editfont != nullptr) {
    return (cu->editfont->select_char_info_flag & CU_CHINFO_BOLD);
  }
  return false;
}
 
static bool rna_TextCurve_is_select_italic_get(PointerRNA *ptr)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  if (cu->editfont != nullptr) {
    return (cu->editfont->select_char_info_flag & CU_CHINFO_ITALIC);
  }
  return false;
}
 
static bool rna_TextCurve_is_select_underline_get(PointerRNA *ptr)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  if (cu->editfont != nullptr) {
    return (cu->editfont->select_char_info_flag & CU_CHINFO_UNDERLINE);
  }
  return false;
}
 
static bool rna_TextCurve_is_select_smallcaps_get(PointerRNA *ptr)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  if (cu->editfont != nullptr) {
    return (cu->editfont->select_char_info_flag & CU_CHINFO_SMALLCAPS);
  }
  return false;
}
 
static bool rna_TextCurve_has_selection_get(PointerRNA *ptr)
{
  Curve *cu = reinterpret_cast<Curve *>(ptr->owner_id);
  if (cu->editfont != nullptr) {
    return (cu->editfont->selboxes != nullptr);
  }
  return false;
}
 
#else
 
static const float tilt_limit = DEG2RADF(21600.0f);
 
static void rna_def_bpoint(BlenderRNA *brna)
{
  StructRNA *srna;
  PropertyRNA *prop;
 
  srna = RNA_def_struct(brna, "SplinePoint", nullptr);
  RNA_def_struct_sdna(srna, "BPoint");
  RNA_def_struct_ui_text(srna, "SplinePoint", "Spline point without handles");
 
  /* Boolean values */
  prop = RNA_def_property(srna, "select", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "f1", SELECT);
  RNA_def_property_ui_text(prop, "Select", "Selection status");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "hide", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "hide", 0);
  RNA_def_property_ui_text(prop, "Hide", "Visibility status");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  /* Vector value */
  prop = RNA_def_property(srna, "co", PROP_FLOAT, PROP_TRANSLATION);
  RNA_def_property_array(prop, 3);
  RNA_def_property_float_sdna(prop, nullptr, "vec");
  RNA_def_property_ui_text(prop, "Point", "Point coordinates");
  RNA_def_property_ui_range(prop, -FLT_MAX, FLT_MAX, 1, RNA_TRANSLATION_PREC_DEFAULT);
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "weight", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "vec[3]");
  RNA_def_property_ui_text(prop, "Weight", "NURBS weight");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  /* Number values */
  prop = RNA_def_property(srna, "tilt", PROP_FLOAT, PROP_ANGLE);
  RNA_def_property_range(prop, -tilt_limit, tilt_limit);
  RNA_def_property_ui_range(prop, -tilt_limit, tilt_limit, 10, 3);
  RNA_def_property_ui_text(prop, "Tilt", "Tilt in 3D View");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "weight_softbody", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "weight");
  RNA_def_property_range(prop, 0.01f, 100.0f);
  RNA_def_property_ui_text(prop, "Weight", "Softbody goal weight");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "radius", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "radius");
  RNA_def_property_range(prop, 0.0f, FLT_MAX);
  RNA_def_property_ui_text(prop, "Bevel Radius", "Radius for beveling");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  RNA_def_struct_path_func(srna, "rna_Curve_spline_point_path");
}
 
static void rna_def_beztriple(BlenderRNA *brna)
{
  StructRNA *srna;
  PropertyRNA *prop;
 
  srna = RNA_def_struct(brna, "BezierSplinePoint", nullptr);
  RNA_def_struct_sdna(srna, "BezTriple");
  RNA_def_struct_ui_text(srna, "Bézier Curve Point", "Bézier curve point with two handles");
 
  /* Boolean values */
  prop = RNA_def_property(srna, "select_left_handle", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "f1", SELECT);
  RNA_def_property_ui_text(prop, "Handle 1 selected", "Handle 1 selection status");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "select_right_handle", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "f3", SELECT);
  RNA_def_property_ui_text(prop, "Handle 2 selected", "Handle 2 selection status");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "select_control_point", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "f2", SELECT);
  RNA_def_property_ui_text(prop, "Control Point selected", "Control point selection status");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "hide", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "hide", 0);
  RNA_def_property_ui_text(prop, "Hide", "Visibility status");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  /* Enums */
  prop = RNA_def_property(srna, "handle_left_type", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, nullptr, "h1");
  RNA_def_property_enum_items(prop, beztriple_handle_type_items);
  RNA_def_property_ui_text(prop, "Handle 1 Type", "Handle types");
  RNA_def_property_update(prop, 0, "rna_Curve_update_points");
 
  prop = RNA_def_property(srna, "handle_right_type", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, nullptr, "h2");
  RNA_def_property_enum_items(prop, beztriple_handle_type_items);
  RNA_def_property_ui_text(prop, "Handle 2 Type", "Handle types");
  RNA_def_property_update(prop, 0, "rna_Curve_update_points");
 
  /* Vector values */
  prop = RNA_def_property(srna, "handle_left", PROP_FLOAT, PROP_TRANSLATION);
  RNA_def_property_array(prop, 3);
  RNA_def_property_float_funcs(
      prop, "rna_BezTriple_handle1_get", "rna_BezTriple_handle1_set", nullptr);
  RNA_def_property_ui_text(prop, "Handle 1", "Coordinates of the first handle");
  RNA_def_property_ui_range(prop, -FLT_MAX, FLT_MAX, 1, RNA_TRANSLATION_PREC_DEFAULT);
  RNA_def_property_update(prop, 0, "rna_Curve_update_points");
 
  prop = RNA_def_property(srna, "co", PROP_FLOAT, PROP_TRANSLATION);
  RNA_def_property_array(prop, 3);
  RNA_def_property_float_funcs(
      prop, "rna_BezTriple_ctrlpoint_get", "rna_BezTriple_ctrlpoint_set", nullptr);
  RNA_def_property_ui_text(prop, "Control Point", "Coordinates of the control point");
  RNA_def_property_ui_range(prop, -FLT_MAX, FLT_MAX, 1, RNA_TRANSLATION_PREC_DEFAULT);
  RNA_def_property_update(prop, 0, "rna_Curve_update_points");
 
  prop = RNA_def_property(srna, "handle_right", PROP_FLOAT, PROP_TRANSLATION);
  RNA_def_property_array(prop, 3);
  RNA_def_property_float_funcs(
      prop, "rna_BezTriple_handle2_get", "rna_BezTriple_handle2_set", nullptr);
  RNA_def_property_ui_text(prop, "Handle 2", "Coordinates of the second handle");
  RNA_def_property_ui_range(prop, -FLT_MAX, FLT_MAX, 1, RNA_TRANSLATION_PREC_DEFAULT);
  RNA_def_property_update(prop, 0, "rna_Curve_update_points");
 
  /* Number values */
  prop = RNA_def_property(srna, "tilt", PROP_FLOAT, PROP_ANGLE);
  RNA_def_property_range(prop, -tilt_limit, tilt_limit);
  RNA_def_property_ui_range(prop, -tilt_limit, tilt_limit, 10, 3);
  RNA_def_property_ui_text(prop, "Tilt", "Tilt in 3D View");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "weight_softbody", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "weight");
  RNA_def_property_range(prop, 0.01f, 100.0f);
  RNA_def_property_ui_text(prop, "Weight", "Softbody goal weight");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "radius", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "radius");
  RNA_def_property_range(prop, 0.0f, FLT_MAX);
  RNA_def_property_ui_text(prop, "Bevel Radius", "Radius for beveling");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  RNA_def_struct_path_func(srna, "rna_Curve_spline_point_path");
}
 
static void rna_def_path(BlenderRNA * /*brna*/, StructRNA *srna)
{
  PropertyRNA *prop;
 
  /* number values */
  prop = RNA_def_property(srna, "path_duration", PROP_INT, PROP_TIME);
  RNA_def_property_int_sdna(prop, nullptr, "pathlen");
  RNA_def_property_range(prop, 1, MAXFRAME);
  RNA_def_property_ui_text(prop,
                           "Path Duration",
                           "The number of frames that are needed to traverse the path, "
                           "defining the maximum value for the 'Evaluation Time' setting");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  /* flags */
  prop = RNA_def_property(srna, "use_path", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", CU_PATH);
  RNA_def_property_ui_text(prop, "Path", "Enable the curve to become a translation path");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "use_path_follow", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", CU_FOLLOW);
  RNA_def_property_ui_text(prop, "Follow", "Make curve path children rotate along the path");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "use_path_clamp", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", CU_PATH_CLAMP);
  RNA_def_property_ui_text(
      prop,
      "Clamp",
      "Clamp the curve path children so they cannot travel past the start/end point of the curve");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "use_stretch", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", CU_STRETCH);
  RNA_def_property_ui_text(prop,
                           "Stretch",
                           "Option for curve-deform: "
                           "make deformed child stretch along entire path");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "use_deform_bounds", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_negative_sdna(prop, nullptr, "flag", CU_DEFORM_BOUNDS_OFF);
  RNA_def_property_ui_text(prop,
                           "Bounds Clamp",
                           "Option for curve-deform: "
                           "Use the mesh bounds to clamp the deformation");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "use_radius", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", CU_PATH_RADIUS);
  RNA_def_property_ui_text(prop,
                           "Radius",
                           "Option for paths and curve-deform: "
                           "apply the curve radius to objects following it "
                           "and to deformed objects");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
}
 
static void rna_def_nurbs(BlenderRNA * /*brna*/, StructRNA * /*srna*/)
{
  /* Nothing. */
}
 
static void rna_def_font(BlenderRNA * /*brna*/, StructRNA *srna)
{
  PropertyRNA *prop;
 
  static const EnumPropertyItem prop_align_items[] = {
      {CU_ALIGN_X_LEFT, "LEFT", ICON_ALIGN_LEFT, "Left", "Align text to the left"},
      {CU_ALIGN_X_MIDDLE, "CENTER", ICON_ALIGN_CENTER, "Center", "Center text"},
      {CU_ALIGN_X_RIGHT, "RIGHT", ICON_ALIGN_RIGHT, "Right", "Align text to the right"},
      {CU_ALIGN_X_JUSTIFY,
       "JUSTIFY",
       ICON_ALIGN_JUSTIFY,
       "Justify",
       "Align to the left and the right"},
      {CU_ALIGN_X_FLUSH,
       "FLUSH",
       ICON_ALIGN_FLUSH,
       "Flush",
       "Align to the left and the right, with equal character spacing"},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  static const EnumPropertyItem prop_align_y_items[] = {
      {CU_ALIGN_Y_TOP, "TOP", ICON_ALIGN_TOP, "Top", "Align text to the top"},
      {CU_ALIGN_Y_TOP_BASELINE,
       "TOP_BASELINE",
       ICON_ALIGN_TOP,
       "Top Baseline",
       "Align text to the top line's baseline"},
      {CU_ALIGN_Y_CENTER, "CENTER", ICON_ALIGN_MIDDLE, "Middle", "Align text to the middle"},
      {CU_ALIGN_Y_BOTTOM_BASELINE,
       "BOTTOM_BASELINE",
       ICON_ALIGN_BOTTOM,
       "Bottom Baseline",
       "Align text to the bottom line's baseline"},
      {CU_ALIGN_Y_BOTTOM, "BOTTOM", ICON_ALIGN_BOTTOM, "Bottom", "Align text to the bottom"},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  static const EnumPropertyItem prop_overflow_items[] = {
      {CU_OVERFLOW_NONE, "NONE", 0, "Overflow", "Let the text overflow outside the text boxes"},
      {CU_OVERFLOW_SCALE,
       "SCALE",
       0,
       "Scale to Fit",
       "Scale down the text to fit inside the text boxes"},
      {CU_OVERFLOW_TRUNCATE,
       "TRUNCATE",
       0,
       "Truncate",
       "Truncate the text that would go outside the text boxes"},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  /* Enums */
  prop = RNA_def_property(srna, "align_x", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, nullptr, "spacemode");
  RNA_def_property_enum_items(prop, prop_align_items);
  RNA_def_property_ui_text(prop,
                           "Horizontal Alignment",
                           "Text horizontal alignment from the object or text box center");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "align_y", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, nullptr, "align_y");
  RNA_def_property_enum_items(prop, prop_align_y_items);
  RNA_def_property_ui_text(
      prop, "Vertical Alignment", "Text vertical alignment from the object center");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "overflow", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, nullptr, "overflow");
  RNA_def_property_enum_items(prop, prop_overflow_items);
  RNA_def_property_enum_default(prop, CU_OVERFLOW_NONE);
  RNA_def_property_ui_text(
      prop, "Textbox Overflow", "Handle the text behavior when it does not fit in the text boxes");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  /* number values */
  prop = RNA_def_property(srna, "size", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "fsize");
  RNA_def_property_range(prop, 0.0001f, 10000.0f);
  RNA_def_property_ui_range(prop, 0.01, 10, 1, 3);
  RNA_def_property_ui_text(prop, "Font Size", "");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "small_caps_scale", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "smallcaps_scale");
  RNA_def_property_ui_range(prop, 0, 1.0, 1, 2);
  RNA_def_property_ui_text(prop, "Small Caps", "Scale of small capitals");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "space_line", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "linedist");
  RNA_def_property_range(prop, 0.0f, 10.0f);
  RNA_def_property_ui_text(prop, "Distance between lines of text", "");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "space_word", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "wordspace");
  RNA_def_property_range(prop, 0.0f, 10.0f);
  RNA_def_property_ui_text(prop, "Spacing between words", "");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "space_character", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "spacing");
  RNA_def_property_range(prop, 0.0f, 10.0f);
  RNA_def_property_ui_text(prop, "Global spacing between characters", "");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "shear", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "shear");
  RNA_def_property_range(prop, -1.0f, 1.0f);
  RNA_def_property_ui_text(prop, "Shear", "Italic angle of the characters");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "offset_x", PROP_FLOAT, PROP_DISTANCE);
  RNA_def_property_float_sdna(prop, nullptr, "xof");
  RNA_def_property_range(prop, -FLT_MAX, FLT_MAX);
  RNA_def_property_ui_range(prop, -50.0f, 50.0f, 10, 3);
  RNA_def_property_ui_text(prop, "X Offset", "Horizontal offset from the object origin");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "offset_y", PROP_FLOAT, PROP_DISTANCE);
  RNA_def_property_float_sdna(prop, nullptr, "yof");
  RNA_def_property_range(prop, -FLT_MAX, FLT_MAX);
  RNA_def_property_ui_range(prop, -50.0f, 50.0f, 10, 3);
  RNA_def_property_ui_text(prop, "Y Offset", "Vertical offset from the object origin");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "underline_position", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "ulpos");
  RNA_def_property_range(prop, -0.2f, 0.8f);
  RNA_def_property_ui_text(prop, "Underline Position", "Vertical position of underline");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "underline_height", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "ulheight");
  RNA_def_property_range(prop, 0.0f, 0.8f);
  RNA_def_property_ui_text(prop, "Underline Thickness", "");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "text_boxes", PROP_COLLECTION, PROP_NONE);
  RNA_def_property_collection_sdna(prop, nullptr, "tb", "totbox");
  RNA_def_property_struct_type(prop, "TextBox");
  RNA_def_property_ui_text(prop, "Textboxes", "");
 
  prop = RNA_def_property(srna, "active_textbox", PROP_INT, PROP_NONE);
  RNA_def_property_int_sdna(prop, nullptr, "actbox");
  RNA_def_property_ui_text(prop, "Active Text Box", "");
  RNA_def_property_int_funcs(prop, nullptr, nullptr, "rna_Curve_active_textbox_index_range");
 
  /* strings */
  prop = RNA_def_property(srna, "family", PROP_STRING, PROP_NONE);
  RNA_def_property_string_maxlength(prop, MAX_ID_NAME - 2);
  RNA_def_property_ui_text(
      prop,
      "Object Font",
      "Use objects as font characters (give font objects a common name "
      "followed by the character they represent, eg. 'family-a', 'family-b', etc, "
      "set this setting to 'family-', and turn on Vertex Instancing)");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "body", PROP_STRING, PROP_NONE);
  RNA_def_property_string_sdna(prop, nullptr, "str");
  RNA_def_property_ui_text(prop, "Body Text", "Content of this text object");
  RNA_def_property_string_funcs(
      prop, "rna_Curve_body_get", "rna_Curve_body_length", "rna_Curve_body_set");
  /* note that originally str did not have a limit! */
  RNA_def_property_string_maxlength(prop, 8192);
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "body_format", PROP_COLLECTION, PROP_NONE);
  RNA_def_property_collection_sdna(prop, nullptr, "strinfo", "len_char32");
  RNA_def_property_struct_type(prop, "TextCharacterFormat");
  RNA_def_property_ui_text(prop, "Character Info", "Stores the style of each character");
 
  /* pointers */
  prop = RNA_def_property(srna, "follow_curve", PROP_POINTER, PROP_NONE);
  RNA_def_property_pointer_sdna(prop, nullptr, "textoncurve");
  RNA_def_property_pointer_funcs(prop, nullptr, nullptr, nullptr, "rna_Curve_otherObject_poll");
  RNA_def_property_flag(prop, PROP_EDITABLE);
  RNA_def_property_override_flag(prop, PROPOVERRIDE_OVERRIDABLE_LIBRARY);
  RNA_def_property_ui_text(prop, "Text on Curve", "Curve deforming text object");
  RNA_def_property_update(prop, 0, "rna_Curve_update_deps");
 
  prop = RNA_def_property(srna, "font", PROP_POINTER, PROP_NONE);
  RNA_def_property_pointer_sdna(prop, nullptr, "vfont");
  RNA_def_property_ui_text(prop, "Font", "");
  RNA_def_property_flag(prop, PROP_EDITABLE);
  RNA_def_property_override_flag(prop, PROPOVERRIDE_OVERRIDABLE_LIBRARY);
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "font_bold", PROP_POINTER, PROP_NONE);
  RNA_def_property_pointer_sdna(prop, nullptr, "vfontb");
  RNA_def_property_ui_text(prop, "Font Bold", "");
  RNA_def_property_flag(prop, PROP_EDITABLE);
  RNA_def_property_override_flag(prop, PROPOVERRIDE_OVERRIDABLE_LIBRARY);
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "font_italic", PROP_POINTER, PROP_NONE);
  RNA_def_property_pointer_sdna(prop, nullptr, "vfonti");
  RNA_def_property_ui_text(prop, "Font Italic", "");
  RNA_def_property_flag(prop, PROP_EDITABLE);
  RNA_def_property_override_flag(prop, PROPOVERRIDE_OVERRIDABLE_LIBRARY);
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "font_bold_italic", PROP_POINTER, PROP_NONE);
  RNA_def_property_pointer_sdna(prop, nullptr, "vfontbi");
  RNA_def_property_ui_text(prop, "Font Bold Italic", "");
  RNA_def_property_flag(prop, PROP_EDITABLE);
  RNA_def_property_override_flag(prop, PROPOVERRIDE_OVERRIDABLE_LIBRARY);
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "edit_format", PROP_POINTER, PROP_NONE);
  RNA_def_property_pointer_sdna(prop, nullptr, "curinfo");
  RNA_def_property_ui_text(prop, "Edit Format", "Editing settings character formatting");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  /* flags */
  prop = RNA_def_property(srna, "use_fast_edit", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", CU_FAST);
  RNA_def_property_ui_text(prop, "Fast Editing", "Don't fill polygons while editing");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "is_select_bold", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_funcs(prop, "rna_TextCurve_is_select_bold_get", nullptr);
  RNA_def_property_ui_text(prop, "Selected Bold", "Whether the selected text is bold");
  RNA_def_property_clear_flag(prop, PROP_EDITABLE);
 
  prop = RNA_def_property(srna, "is_select_italic", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_funcs(prop, "rna_TextCurve_is_select_italic_get", nullptr);
  RNA_def_property_ui_text(prop, "Selected Italic", "Whether the selected text is italics");
  RNA_def_property_clear_flag(prop, PROP_EDITABLE);
 
  prop = RNA_def_property(srna, "is_select_underline", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_funcs(prop, "rna_TextCurve_is_select_underline_get", nullptr);
  RNA_def_property_ui_text(prop, "Selected Underline", "Whether the selected text is underlined");
  RNA_def_property_clear_flag(prop, PROP_EDITABLE);
 
  prop = RNA_def_property(srna, "is_select_smallcaps", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_funcs(prop, "rna_TextCurve_is_select_smallcaps_get", nullptr);
  RNA_def_property_ui_text(prop, "Selected Small Caps", "Whether the selected text is small caps");
  RNA_def_property_clear_flag(prop, PROP_EDITABLE);
 
  prop = RNA_def_property(srna, "has_selection", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_funcs(prop, "rna_TextCurve_has_selection_get", nullptr);
  RNA_def_property_ui_text(prop, "Text Selected", "Whether there is any text selected");
  RNA_def_property_clear_flag(prop, PROP_EDITABLE);
}
 
static void rna_def_textbox(BlenderRNA *brna)
{
  StructRNA *srna;
  PropertyRNA *prop;
 
  srna = RNA_def_struct(brna, "TextBox", nullptr);
  RNA_def_struct_ui_text(srna, "Text Box", "Text bounding box for layout");
 
  /* number values */
  prop = RNA_def_property(srna, "x", PROP_FLOAT, PROP_DISTANCE);
  RNA_def_property_float_sdna(prop, nullptr, "x");
  RNA_def_property_range(prop, -FLT_MAX, FLT_MAX);
  RNA_def_property_ui_range(prop, -50.0f, 50.0f, 10, 3);
  RNA_def_property_ui_text(prop, "Textbox X Offset", "");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "y", PROP_FLOAT, PROP_DISTANCE);
  RNA_def_property_float_sdna(prop, nullptr, "y");
  RNA_def_property_range(prop, -FLT_MAX, FLT_MAX);
  RNA_def_property_ui_range(prop, -50.0f, 50.0f, 10, 3);
  RNA_def_property_ui_text(prop, "Textbox Y Offset", "");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "width", PROP_FLOAT, PROP_DISTANCE);
  RNA_def_property_float_sdna(prop, nullptr, "w");
  RNA_def_property_range(prop, 0.0f, FLT_MAX);
  RNA_def_property_ui_range(prop, 0.0f, 50.0f, 10, 3);
  RNA_def_property_ui_text(prop, "Textbox Width", "");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "height", PROP_FLOAT, PROP_DISTANCE);
  RNA_def_property_float_sdna(prop, nullptr, "h");
  RNA_def_property_range(prop, 0.0f, FLT_MAX);
  RNA_def_property_ui_range(prop, 0.0f, 50.0f, 10, 3);
  RNA_def_property_ui_text(prop, "Textbox Height", "");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  RNA_def_struct_path_func(srna, "rna_TextBox_path");
}
 
static void rna_def_charinfo(BlenderRNA *brna)
{
  StructRNA *srna;
  PropertyRNA *prop;
 
  srna = RNA_def_struct(brna, "TextCharacterFormat", nullptr);
  RNA_def_struct_sdna(srna, "CharInfo");
  RNA_def_struct_ui_text(srna, "Text Character Format", "Text character formatting settings");
 
  /* flags */
  prop = RNA_def_property(srna, "use_bold", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", CU_CHINFO_BOLD);
  RNA_def_property_ui_text(prop, "Bold", "");
  RNA_def_property_ui_icon(prop, ICON_BOLD, 0);
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "use_italic", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", CU_CHINFO_ITALIC);
  RNA_def_property_ui_text(prop, "Italic", "");
  RNA_def_property_ui_icon(prop, ICON_ITALIC, 0);
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "use_underline", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", CU_CHINFO_UNDERLINE);
  RNA_def_property_ui_text(prop, "Underline", "");
  RNA_def_property_ui_icon(prop, ICON_UNDERLINE, 0);
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "use_small_caps", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", CU_CHINFO_SMALLCAPS);
  RNA_def_property_ui_text(prop, "Small Caps", "");
  RNA_def_property_ui_icon(prop, ICON_SMALL_CAPS, 0);
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "material_index", PROP_INT, PROP_UNSIGNED);
  // RNA_def_property_int_sdna(prop, nullptr, "mat_nr");
  RNA_def_property_ui_text(prop, "Material Index", "Material slot index of this character");
  RNA_def_property_int_funcs(prop,
                             "rna_ChariInfo_material_index_get",
                             "rna_ChariInfo_material_index_set",
                             "rna_Curve_material_index_range");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "kerning", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "kern");
  RNA_def_property_ui_text(prop, "Kerning", "Spacing between characters");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
}
 
static void rna_def_surface(BlenderRNA *brna)
{
  StructRNA *srna;
 
  srna = RNA_def_struct(brna, "SurfaceCurve", "Curve");
  RNA_def_struct_sdna(srna, "Curve");
  RNA_def_struct_ui_text(srna, "Surface Curve", "Curve data-block used for storing surfaces");
  RNA_def_struct_ui_icon(srna, ICON_SURFACE_DATA);
 
  rna_def_nurbs(brna, srna);
}
 
static void rna_def_text(BlenderRNA *brna)
{
  StructRNA *srna;
 
  srna = RNA_def_struct(brna, "TextCurve", "Curve");
  RNA_def_struct_sdna(srna, "Curve");
  RNA_def_struct_ui_text(srna, "Text Curve", "Curve data-block used for storing text");
  RNA_def_struct_ui_icon(srna, ICON_FONT_DATA);
 
  rna_def_font(brna, srna);
  rna_def_nurbs(brna, srna);
}
 
/* curve.splines[0].points */
static void rna_def_curve_spline_points(BlenderRNA *brna, PropertyRNA *cprop)
{
  StructRNA *srna;
  // PropertyRNA *prop;
 
  FunctionRNA *func;
  PropertyRNA *parm;
 
  RNA_def_property_srna(cprop, "SplinePoints");
  srna = RNA_def_struct(brna, "SplinePoints", nullptr);
  RNA_def_struct_sdna(srna, "Nurb");
  RNA_def_struct_ui_text(srna, "Spline Points", "Collection of spline points");
 
  func = RNA_def_function(srna, "add", "rna_Curve_spline_points_add");
  RNA_def_function_ui_description(func, "Add a number of points to this spline");
  RNA_def_function_flag(func, FUNC_USE_SELF_ID | FUNC_USE_REPORTS);
  parm = RNA_def_int(
      func, "count", 1, 0, INT_MAX, "Number", "Number of points to add to the spline", 0, INT_MAX);
  RNA_def_parameter_flags(parm, PropertyFlag(0), PARM_REQUIRED);
 
#  if 0
  func = RNA_def_function(srna, "remove", "rna_Curve_spline_remove");
  RNA_def_function_ui_description(func, "Remove a spline from a curve");
  RNA_def_function_flag(func, FUNC_USE_REPORTS);
  parm = RNA_def_pointer(func, "spline", "Spline", "", "The spline to remove");
  RNA_def_parameter_flags(parm, PROP_NEVER_NULL, PARM_REQUIRED | PARM_RNAPTR);
  RNA_def_parameter_clear_flags(parm, PROP_THICK_WRAP, 0);
#  endif
}
 
static void rna_def_curve_spline_bezpoints(BlenderRNA *brna, PropertyRNA *cprop)
{
  StructRNA *srna;
  // PropertyRNA *prop;
 
  FunctionRNA *func;
  PropertyRNA *parm;
 
  RNA_def_property_srna(cprop, "SplineBezierPoints");
  srna = RNA_def_struct(brna, "SplineBezierPoints", nullptr);
  RNA_def_struct_sdna(srna, "Nurb");
  RNA_def_struct_ui_text(srna, "Spline Bézier Points", "Collection of spline Bézier points");
 
  func = RNA_def_function(srna, "add", "rna_Curve_spline_bezpoints_add");
  RNA_def_function_ui_description(func, "Add a number of points to this spline");
  RNA_def_function_flag(func, FUNC_USE_SELF_ID | FUNC_USE_REPORTS);
  parm = RNA_def_int(
      func, "count", 1, 0, INT_MAX, "Number", "Number of points to add to the spline", 0, INT_MAX);
  RNA_def_parameter_flags(parm, PropertyFlag(0), PARM_REQUIRED);
 
#  if 0
  func = RNA_def_function(srna, "remove", "rna_Curve_spline_remove");
  RNA_def_function_ui_description(func, "Remove a spline from a curve");
  RNA_def_function_flag(func, FUNC_USE_REPORTS);
  parm = RNA_def_pointer(func, "spline", "Spline", "", "The spline to remove");
  RNA_def_parameter_flags(parm, PROP_NEVER_NULL, PARM_REQUIRED | PARM_RNAPTR);
  RNA_def_parameter_clear_flags(parm, PROP_THICK_WRAP, 0);
#  endif
}
 
/* curve.splines */
static void rna_def_curve_splines(BlenderRNA *brna, PropertyRNA *cprop)
{
  StructRNA *srna;
  PropertyRNA *prop;
 
  FunctionRNA *func;
  PropertyRNA *parm;
 
  RNA_def_property_srna(cprop, "CurveSplines");
  srna = RNA_def_struct(brna, "CurveSplines", nullptr);
  RNA_def_struct_sdna(srna, "Curve");
  RNA_def_struct_ui_text(srna, "Curve Splines", "Collection of curve splines");
 
  func = RNA_def_function(srna, "new", "rna_Curve_spline_new");
  RNA_def_function_ui_description(func, "Add a new spline to the curve");
  parm = RNA_def_enum(func, "type", curve_type_items, CU_POLY, "", "type for the new spline");
  RNA_def_parameter_flags(parm, PropertyFlag(0), PARM_REQUIRED);
  parm = RNA_def_pointer(func, "spline", "Spline", "", "The newly created spline");
  RNA_def_function_return(func, parm);
 
  func = RNA_def_function(srna, "remove", "rna_Curve_spline_remove");
  RNA_def_function_ui_description(func, "Remove a spline from a curve");
  RNA_def_function_flag(func, FUNC_USE_REPORTS);
  parm = RNA_def_pointer(func, "spline", "Spline", "", "The spline to remove");
  RNA_def_parameter_flags(parm, PROP_NEVER_NULL, PARM_REQUIRED | PARM_RNAPTR);
  RNA_def_parameter_clear_flags(parm, PROP_THICK_WRAP, ParameterFlag(0));
 
  func = RNA_def_function(srna, "clear", "rna_Curve_spline_clear");
  RNA_def_function_ui_description(func, "Remove all splines from a curve");
 
  prop = RNA_def_property(srna, "active", PROP_POINTER, PROP_NONE);
  RNA_def_property_struct_type(prop, "Spline");
  RNA_def_property_pointer_funcs(
      prop, "rna_Curve_active_spline_get", "rna_Curve_active_spline_set", nullptr, nullptr);
  RNA_def_property_flag(prop, PROP_EDITABLE);
  RNA_def_property_ui_text(prop, "Active Spline", "Active curve spline");
}
 
static void rna_def_curve(BlenderRNA *brna)
{
  StructRNA *srna;
  PropertyRNA *prop;
 
  static const EnumPropertyItem curve_twist_mode_items[] = {
      {CU_TWIST_Z_UP,
       "Z_UP",
       0,
       "Z-Up",
       "Use Z-Up axis to calculate the curve twist at each point"},
      {CU_TWIST_MINIMUM, "MINIMUM", 0, "Minimum", "Use the least twist over the entire curve"},
      {CU_TWIST_TANGENT, "TANGENT", 0, "Tangent", "Use the tangent to calculate twist"},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  static const EnumPropertyItem curve_axis_items[] = {
      {0, "2D", 0, "2D", "Clamp the Z axis of the curve"},
      {CU_3D,
       "3D",
       0,
       "3D",
       "Allow editing on the Z axis of this curve, also allows tilt and curve radius to be used"},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  static const EnumPropertyItem bevfac_mapping_items[] = {
      {CU_BEVFAC_MAP_RESOLU,
       "RESOLUTION",
       0,
       "Resolution",
       "Map the geometry factor to the number of subdivisions of a spline (U resolution)"},
      {CU_BEVFAC_MAP_SEGMENT,
       "SEGMENTS",
       0,
       "Segments",
       "Map the geometry factor to the length of a segment and to the number of subdivisions of a "
       "segment"},
      {CU_BEVFAC_MAP_SPLINE,
       "SPLINE",
       0,
       "Spline",
       "Map the geometry factor to the length of a spline"},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  static const EnumPropertyItem bevel_mode_items[] = {
      {CU_BEV_MODE_ROUND,
       "ROUND",
       0,
       "Round",
       "Use circle for the section of the curve's bevel geometry"},
      {CU_BEV_MODE_OBJECT,
       "OBJECT",
       0,
       "Object",
       "Use an object for the section of the curve's bevel geometry segment"},
      {CU_BEV_MODE_CURVE_PROFILE,
       "PROFILE",
       0,
       "Profile",
       "Use a custom profile for each quarter of curve's bevel geometry"},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  static const EnumPropertyItem curve_taper_radius_mode_items[] = {
      {CU_TAPER_RADIUS_OVERRIDE,
       "OVERRIDE",
       0,
       "Override",
       "Override the radius of the spline point with the taper radius"},
      {CU_TAPER_RADIUS_MULTIPLY,
       "MULTIPLY",
       0,
       "Multiply",
       "Multiply the radius of the spline point by the taper radius"},
      {CU_TAPER_RADIUS_ADD,
       "ADD",
       0,
       "Add",
       "Add the radius of the bevel point to the taper radius"},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  srna = RNA_def_struct(brna, "Curve", "ID");
  RNA_def_struct_ui_text(srna, "Curve", "Curve data-block storing curves, splines and NURBS");
  RNA_def_struct_ui_icon(srna, ICON_CURVE_DATA);
  RNA_def_struct_refine_func(srna, "rna_Curve_refine");
 
  prop = RNA_def_property(srna, "shape_keys", PROP_POINTER, PROP_NONE);
  RNA_def_property_pointer_sdna(prop, nullptr, "key");
  RNA_def_property_override_flag(prop, PROPOVERRIDE_OVERRIDABLE_LIBRARY);
  RNA_def_property_clear_flag(prop, PROP_PTR_NO_OWNERSHIP);
  RNA_def_property_ui_text(prop, "Shape Keys", "");
 
  prop = RNA_def_property(srna, "splines", PROP_COLLECTION, PROP_NONE);
#  if 0
  RNA_def_property_collection_sdna(prop, nullptr, "nurb", nullptr);
#  else
  /* this way we get editmode nurbs too, keyframe in editmode */
  RNA_def_property_collection_funcs(prop,
                                    "rna_Curve_splines_begin",
                                    "rna_iterator_listbase_next",
                                    "rna_iterator_listbase_end",
                                    "rna_iterator_listbase_get",
                                    nullptr,
                                    nullptr,
                                    nullptr,
                                    nullptr);
#  endif
  RNA_def_property_struct_type(prop, "Spline");
  RNA_def_property_ui_text(prop, "Splines", "Collection of splines in this curve data object");
  rna_def_curve_splines(brna, prop);
 
  rna_def_path(brna, srna);
 
  prop = RNA_def_property(srna, "bevel_mode", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, nullptr, "bevel_mode");
  RNA_def_property_enum_items(prop, bevel_mode_items);
  RNA_def_property_ui_text(
      prop, "Bevel Mode", "Determine how to build the curve's bevel geometry");
  RNA_def_property_enum_funcs(prop, nullptr, "rna_Curve_bevel_mode_set", nullptr);
  /* Use this update function so the curve profile is properly initialized when
   * switching back to "Profile" mode after changing the resolution. */
  RNA_def_property_update(prop, 0, "rna_Curve_bevel_resolution_update");
 
  prop = RNA_def_property(srna, "bevel_profile", PROP_POINTER, PROP_NONE);
  RNA_def_property_struct_type(prop, "CurveProfile");
  RNA_def_property_pointer_sdna(prop, nullptr, "bevel_profile");
  RNA_def_property_ui_text(prop, "Custom Profile Path", "The path for the curve's custom profile");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  /* Number values */
  prop = RNA_def_property(srna, "bevel_resolution", PROP_INT, PROP_NONE);
  RNA_def_property_int_sdna(prop, nullptr, "bevresol");
  RNA_def_property_range(prop, 0, 32);
  RNA_def_property_ui_range(prop, 0, 32, 1.0, -1);
  RNA_def_property_ui_text(
      prop, "Bevel Resolution", "The number of segments in each quarter-circle of the bevel");
  RNA_def_property_update(prop, 0, "rna_Curve_bevel_resolution_update");
 
  prop = RNA_def_property(srna, "offset", PROP_FLOAT, PROP_NONE | PROP_UNIT_LENGTH);
  RNA_def_property_float_sdna(prop, nullptr, "offset");
  RNA_def_property_ui_range(prop, -1.0, 1.0, 0.1, 3);
  RNA_def_property_float_funcs(prop, "rna_Curve_offset_get", "rna_Curve_offset_set", nullptr);
  RNA_def_property_ui_text(prop, "Offset", "Distance to move the curve parallel to its normals");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "extrude", PROP_FLOAT, PROP_NONE | PROP_UNIT_LENGTH);
  RNA_def_property_float_sdna(prop, nullptr, "extrude");
  RNA_def_property_ui_range(prop, 0, 100.0, 0.1, 3);
  RNA_def_property_range(prop, 0.0, FLT_MAX);
  RNA_def_property_ui_text(prop,
                           "Extrude",
                           "Length of the depth added in the local Z direction along the curve, "
                           "perpendicular to its normals");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "bevel_depth", PROP_FLOAT, PROP_NONE | PROP_UNIT_LENGTH);
  RNA_def_property_float_sdna(prop, nullptr, "bevel_radius");
  RNA_def_property_ui_range(prop, 0, 100.0, 0.1, 3);
  RNA_def_property_ui_text(
      prop, "Bevel Depth", "Radius of the bevel geometry, not including extrusion");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "resolution_u", PROP_INT, PROP_NONE);
  RNA_def_property_int_sdna(prop, nullptr, "resolu");
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_range(prop, 1, 1024);
  RNA_def_property_ui_range(prop, 1, 64, 1, -1);
  RNA_def_property_ui_text(
      prop,
      "Resolution U",
      "Number of computed points in the U direction between every pair of control points");
  RNA_def_property_update(prop, 0, "rna_Curve_resolution_u_update_data");
 
  prop = RNA_def_property(srna, "resolution_v", PROP_INT, PROP_NONE);
  RNA_def_property_int_sdna(prop, nullptr, "resolv");
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_ui_range(prop, 1, 64, 1, -1);
  RNA_def_property_range(prop, 1, 1024);
  RNA_def_property_ui_text(
      prop,
      "Resolution V",
      "The number of computed points in the V direction between every pair of control points");
  RNA_def_property_update(prop, 0, "rna_Curve_resolution_v_update_data");
 
  prop = RNA_def_property(srna, "render_resolution_u", PROP_INT, PROP_NONE);
  RNA_def_property_int_sdna(prop, nullptr, "resolu_ren");
  RNA_def_property_range(prop, 0, 1024);
  RNA_def_property_ui_range(prop, 0, 64, 1, -1);
  RNA_def_property_ui_text(
      prop,
      "Render Resolution U",
      "Surface resolution in U direction used while rendering (zero uses preview resolution)");
 
  prop = RNA_def_property(srna, "render_resolution_v", PROP_INT, PROP_NONE);
  RNA_def_property_int_sdna(prop, nullptr, "resolv_ren");
  RNA_def_property_ui_range(prop, 0, 64, 1, -1);
  RNA_def_property_range(prop, 0, 1024);
  RNA_def_property_ui_text(
      prop,
      "Render Resolution V",
      "Surface resolution in V direction used while rendering (zero uses preview resolution)");
 
  prop = RNA_def_property(srna, "eval_time", PROP_FLOAT, PROP_TIME);
  RNA_def_property_float_sdna(prop, nullptr, "ctime");
  RNA_def_property_ui_text(
      prop,
      "Evaluation Time",
      "Parametric position along the length of the curve that Objects 'following' it should be "
      "at (position is evaluated by dividing by the 'Path Length' value)");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  /* pointers */
  prop = RNA_def_property(srna, "bevel_object", PROP_POINTER, PROP_NONE);
  RNA_def_property_struct_type(prop, "Object");
  RNA_def_property_pointer_sdna(prop, nullptr, "bevobj");
  RNA_def_property_flag(prop, PROP_EDITABLE);
  RNA_def_property_override_flag(prop, PROPOVERRIDE_OVERRIDABLE_LIBRARY);
  RNA_def_property_ui_text(
      prop, "Bevel Object", "The name of the Curve object that defines the bevel shape");
  RNA_def_property_update(prop, 0, "rna_Curve_update_deps");
  RNA_def_property_pointer_funcs(prop,
                                 "rna_Curve_bevelObject_get",
                                 "rna_Curve_bevelObject_set",
                                 nullptr,
                                 "rna_Curve_otherObject_poll");
 
  prop = RNA_def_property(srna, "taper_object", PROP_POINTER, PROP_NONE);
  RNA_def_property_struct_type(prop, "Object");
  RNA_def_property_pointer_sdna(prop, nullptr, "taperobj");
  RNA_def_property_flag(prop, PROP_EDITABLE);
  RNA_def_property_override_flag(prop, PROPOVERRIDE_OVERRIDABLE_LIBRARY);
  RNA_def_property_ui_text(
      prop, "Taper Object", "Curve object name that defines the taper (width)");
  RNA_def_property_update(prop, 0, "rna_Curve_update_deps");
  RNA_def_property_pointer_funcs(prop,
                                 "rna_Curve_taperObject_get",
                                 "rna_Curve_taperObject_set",
                                 nullptr,
                                 "rna_Curve_otherObject_poll");
 
  /* Flags */
 
  prop = RNA_def_property(srna, "dimensions", PROP_ENUM, PROP_NONE); /* as an enum */
  RNA_def_property_enum_bitflag_sdna(prop, nullptr, "flag");
  RNA_def_property_enum_items(prop, curve_axis_items);
  RNA_def_property_enum_funcs(prop, nullptr, "rna_Curve_dimension_set", nullptr);
  RNA_def_property_ui_text(prop, "Dimensions", "Select 2D or 3D curve type");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "fill_mode", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_bitflag_sdna(prop, nullptr, "flag");
  RNA_def_property_enum_items(prop, curve3d_fill_mode_items);
  RNA_def_property_enum_funcs(prop, nullptr, nullptr, "rna_Curve_fill_mode_itemf");
  RNA_def_property_ui_text(prop, "Fill Mode", "Mode of filling curve");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "twist_mode", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, nullptr, "twist_mode");
  RNA_def_property_enum_items(prop, curve_twist_mode_items);
  RNA_def_property_ui_text(prop, "Twist Method", "The type of tilt calculation for 3D Curves");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "taper_radius_mode", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, nullptr, "taper_radius_mode");
  RNA_def_property_enum_items(prop, curve_taper_radius_mode_items);
  RNA_def_property_ui_text(prop,
                           "Taper Radius",
                           "Determine how the effective radius of the spline point is computed "
                           "when a taper object is specified");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "bevel_factor_mapping_start", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, nullptr, "bevfac1_mapping");
  RNA_def_property_enum_items(prop, bevfac_mapping_items);
  RNA_def_property_ui_text(
      prop, "Start Mapping Type", "Determine how the geometry start factor is mapped to a spline");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "bevel_factor_mapping_end", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, nullptr, "bevfac2_mapping");
  RNA_def_property_enum_items(prop, bevfac_mapping_items);
  RNA_def_property_ui_text(
      prop, "End Mapping Type", "Determine how the geometry end factor is mapped to a spline");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  /* XXX: would be nice to have a better way to do this, only add for testing. */
  prop = RNA_def_property(srna, "twist_smooth", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "twist_smooth");
  RNA_def_property_ui_range(prop, 0, 100.0, 1, 2);
  RNA_def_property_ui_text(prop, "Twist Smooth", "Smoothing iteration for tangents");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "use_fill_caps", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", CU_FILL_CAPS);
  RNA_def_property_ui_text(prop, "Fill Caps", "Fill caps for beveled curves");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "use_map_taper", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", CU_MAP_TAPER);
  RNA_def_property_ui_text(
      prop, "Map Taper", "Map effect of the taper object to the beveled part of the curve");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  /* texture space */
  prop = RNA_def_property(srna, "use_auto_texspace", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "texspace_flag", CU_TEXSPACE_FLAG_AUTO);
  RNA_def_property_ui_text(
      prop,
      "Auto Texture Space",
      "Adjust active object's texture space automatically when transforming object");
  RNA_def_property_update(prop, NC_OBJECT | ND_DRAW, "rna_Curve_texspace_set");
 
  prop = RNA_def_property(srna, "texspace_location", PROP_FLOAT, PROP_TRANSLATION);
  RNA_def_property_array(prop, 3);
  RNA_def_property_ui_text(prop, "Texture Space Location", "");
  RNA_def_property_ui_range(prop, -FLT_MAX, FLT_MAX, 1, RNA_TRANSLATION_PREC_DEFAULT);
  RNA_def_property_editable_func(prop, "rna_Curve_texspace_editable");
  RNA_def_property_float_funcs(
      prop, "rna_Curve_texspace_location_get", "rna_Curve_texspace_location_set", nullptr);
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "texspace_size", PROP_FLOAT, PROP_XYZ);
  RNA_def_property_array(prop, 3);
  RNA_def_property_flag(prop, PROP_PROPORTIONAL);
  RNA_def_property_ui_text(prop, "Texture Space Size", "");
  RNA_def_property_editable_func(prop, "rna_Curve_texspace_editable");
  RNA_def_property_float_funcs(
      prop, "rna_Curve_texspace_size_get", "rna_Curve_texspace_size_set", nullptr);
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  /* materials */
  prop = RNA_def_property(srna, "materials", PROP_COLLECTION, PROP_NONE);
  RNA_def_property_collection_sdna(prop, nullptr, "mat", "totcol");
  RNA_def_property_struct_type(prop, "Material");
  RNA_def_property_ui_text(prop, "Materials", "");
  RNA_def_property_srna(prop, "IDMaterials"); /* see rna_ID.cc */
  RNA_def_property_collection_funcs(prop,
                                    nullptr,
                                    nullptr,
                                    nullptr,
                                    nullptr,
                                    nullptr,
                                    nullptr,
                                    nullptr,
                                    "rna_IDMaterials_assign_int");
 
  prop = RNA_def_property(srna, "bevel_factor_start", PROP_FLOAT, PROP_FACTOR);
  RNA_def_property_float_sdna(prop, nullptr, "bevfac1");
  RNA_def_property_range(prop, 0, 1.0);
  RNA_def_property_ui_text(prop,
                           "Geometry Start Factor",
                           "Define where along the spline the curve geometry starts (0 for the "
                           "beginning, 1 for the end)");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "bevel_factor_end", PROP_FLOAT, PROP_FACTOR);
  RNA_def_property_float_sdna(prop, nullptr, "bevfac2");
  RNA_def_property_range(prop, 0, 1.0);
  RNA_def_property_ui_text(prop,
                           "Geometry End Factor",
                           "Define where along the spline the curve geometry ends (0 for the "
                           "beginning, 1 for the end)");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "is_editmode", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_funcs(prop, "rna_Curve_is_editmode_get", nullptr);
  RNA_def_property_clear_flag(prop, PROP_EDITABLE);
  RNA_def_property_ui_text(prop, "Is Editmode", "True when used in editmode");
 
  rna_def_animdata_common(srna);
 
  RNA_api_curve(srna);
}
 
static void rna_def_curve_nurb(BlenderRNA *brna)
{
  static const EnumPropertyItem spline_interpolation_items[] = {
      {KEY_LINEAR, "LINEAR", 0, "Linear", ""},
      {KEY_CARDINAL, "CARDINAL", 0, "Cardinal", ""},
      {KEY_BSPLINE, "BSPLINE", 0, "BSpline", ""},
      /* TODO: define somewhere, not one of BEZT_IPO_*. */
      {KEY_CU_EASE, "EASE", 0, "Ease", ""},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  StructRNA *srna;
  PropertyRNA *prop;
 
  srna = RNA_def_struct(brna, "Spline", nullptr);
  RNA_def_struct_sdna(srna, "Nurb");
  RNA_def_struct_ui_text(
      srna,
      "Spline",
      "Element of a curve, either NURBS, Bézier or Polyline or a character with text objects");
 
  prop = RNA_def_property(srna, "points", PROP_COLLECTION, PROP_NONE);
  RNA_def_property_collection_sdna(prop, nullptr, "bp", nullptr);
  RNA_def_property_struct_type(prop, "SplinePoint");
  RNA_def_property_collection_funcs(prop,
                                    "rna_BPoint_array_begin",
                                    "rna_iterator_array_next",
                                    "rna_iterator_array_end",
                                    "rna_iterator_array_get",
                                    "rna_Nurb_length",
                                    nullptr,
                                    nullptr,
                                    nullptr);
  RNA_def_property_ui_text(
      prop, "Points", "Collection of points that make up this poly or nurbs spline");
  rna_def_curve_spline_points(brna, prop);
 
  prop = RNA_def_property(srna, "bezier_points", PROP_COLLECTION, PROP_NONE);
  RNA_def_property_struct_type(prop, "BezierSplinePoint");
  RNA_def_property_collection_sdna(prop, nullptr, "bezt", "pntsu");
  RNA_def_property_ui_text(prop, "Bézier Points", "Collection of points for Bézier curves only");
  rna_def_curve_spline_bezpoints(brna, prop);
 
  prop = RNA_def_property(srna, "tilt_interpolation", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, nullptr, "tilt_interp");
  RNA_def_property_enum_items(prop, spline_interpolation_items);
  RNA_def_property_ui_text(
      prop, "Tilt Interpolation", "The type of tilt interpolation for 3D, Bézier curves");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "radius_interpolation", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, nullptr, "radius_interp");
  RNA_def_property_enum_items(prop, spline_interpolation_items);
  RNA_def_property_ui_text(
      prop, "Radius Interpolation", "The type of radius interpolation for Bézier curves");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "type", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_items(prop, curve_type_items);
  RNA_def_property_enum_funcs(prop, nullptr, "rna_Nurb_type_set", nullptr);
  RNA_def_property_ui_text(prop, "Type", "The interpolation type for this curve element");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "point_count_u", PROP_INT, PROP_UNSIGNED);
  RNA_def_property_clear_flag(prop, PROP_EDITABLE); /* Editing this needs knot recalc. */
  RNA_def_property_int_sdna(prop, nullptr, "pntsu");
  RNA_def_property_ui_text(
      prop, "Points U", "Total number points for the curve or surface in the U direction");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "point_count_v", PROP_INT, PROP_UNSIGNED);
  RNA_def_property_clear_flag(prop, PROP_EDITABLE); /* Editing this needs knot recalc. */
  RNA_def_property_int_sdna(prop, nullptr, "pntsv");
  RNA_def_property_ui_text(
      prop, "Points V", "Total number points for the surface on the V direction");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "order_u", PROP_INT, PROP_NONE);
  RNA_def_property_int_sdna(prop, nullptr, "orderu");
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_range(prop, 2, 64);
  RNA_def_property_ui_range(prop, 2, 6, 1, -1);
  RNA_def_property_ui_text(prop,
                           "Order U",
                           "NURBS order in the U direction. Higher values make each point "
                           "influence a greater area, but have worse performance.");
  RNA_def_property_update(prop, 0, "rna_Nurb_update_knot_u");
 
  prop = RNA_def_property(srna, "order_v", PROP_INT, PROP_NONE);
  RNA_def_property_int_sdna(prop, nullptr, "orderv");
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_range(prop, 2, 64);
  RNA_def_property_ui_range(prop, 2, 6, 1, -1);
  RNA_def_property_ui_text(prop,
                           "Order V",
                           "NURBS order in the V direction. Higher values make each point "
                           "influence a greater area, but have worse performance.");
  RNA_def_property_update(prop, 0, "rna_Nurb_update_knot_v");
 
  prop = RNA_def_property(srna, "resolution_u", PROP_INT, PROP_NONE);
  RNA_def_property_int_sdna(prop, nullptr, "resolu");
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_range(prop, 1, 1024);
  RNA_def_property_ui_range(prop, 1, 64, 1, -1);
  RNA_def_property_ui_text(prop, "Resolution U", "Curve or Surface subdivisions per segment");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "resolution_v", PROP_INT, PROP_NONE);
  RNA_def_property_int_sdna(prop, nullptr, "resolv");
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_range(prop, 1, 1024);
  RNA_def_property_ui_range(prop, 1, 64, 1, -1);
  RNA_def_property_ui_text(prop, "Resolution V", "Surface subdivisions per segment");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "use_cyclic_u", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flagu", CU_NURB_CYCLIC);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_ui_text(
      prop, "Cyclic U", "Make this curve or surface a closed loop in the U direction");
  RNA_def_property_update(prop, 0, "rna_Nurb_update_cyclic_u");
 
  prop = RNA_def_property(srna, "use_cyclic_v", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flagv", CU_NURB_CYCLIC);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_ui_text(prop, "Cyclic V", "Make this surface a closed loop in the V direction");
  RNA_def_property_update(prop, 0, "rna_Nurb_update_cyclic_v");
 
  prop = RNA_def_property(srna, "use_endpoint_u", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flagu", CU_NURB_ENDPOINT);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_ui_text(
      prop,
      "Endpoint U",
      "Make this nurbs curve or surface meet the endpoints in the U direction");
  RNA_def_property_update(prop, 0, "rna_Nurb_update_knot_u");
 
  prop = RNA_def_property(srna, "use_endpoint_v", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flagv", CU_NURB_ENDPOINT);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_ui_text(
      prop, "Endpoint V", "Make this nurbs surface meet the endpoints in the V direction");
  RNA_def_property_update(prop, 0, "rna_Nurb_update_knot_v");
 
  prop = RNA_def_property(srna, "use_bezier_u", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flagu", CU_NURB_BEZIER);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_ui_text(
      prop,
      "Bézier U",
      "Make this nurbs curve or surface act like a Bézier spline in the U direction");
  RNA_def_property_update(prop, 0, "rna_Nurb_update_knot_u");
 
  prop = RNA_def_property(srna, "use_bezier_v", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flagv", CU_NURB_BEZIER);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_ui_text(
      prop, "Bézier V", "Make this nurbs surface act like a Bézier spline in the V direction");
  RNA_def_property_update(prop, 0, "rna_Nurb_update_knot_v");
 
  prop = RNA_def_property(srna, "use_smooth", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flag", CU_SMOOTH);
  RNA_def_property_ui_text(prop, "Smooth", "Smooth the normals of the surface or beveled curve");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "hide", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "hide", 1);
  RNA_def_property_ui_text(prop, "Hide", "Hide this curve in Edit mode");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "material_index", PROP_INT, PROP_UNSIGNED);
  RNA_def_property_int_sdna(prop, nullptr, "mat_nr");
  RNA_def_property_ui_text(prop, "Material Index", "Material slot index of this curve");
  RNA_def_property_int_funcs(prop, nullptr, nullptr, "rna_Curve_material_index_range");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  prop = RNA_def_property(srna, "character_index", PROP_INT, PROP_UNSIGNED);
  RNA_def_property_int_sdna(prop, nullptr, "charidx");
  RNA_def_property_clear_flag(prop, PROP_EDITABLE); /* Editing this needs knot recalc. */
  RNA_def_property_ui_text(prop,
                           "Character Index",
                           "Location of this character in the text data (only for text curves)");
  RNA_def_property_update(prop, 0, "rna_Curve_update_data");
 
  RNA_def_struct_path_func(srna, "rna_Curve_spline_path");
 
  RNA_api_curve_nurb(srna);
}
 
void RNA_def_curve(BlenderRNA *brna)
{
  rna_def_curve(brna);
  rna_def_surface(brna);
  rna_def_text(brna);
  rna_def_textbox(brna);
  rna_def_charinfo(brna);
  rna_def_bpoint(brna);
  rna_def_beztriple(brna);
  rna_def_curve_nurb(brna);
}
 
#endif