rna_dynamicpaint.cc

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

 
#include <cstdlib>
 
#include "BKE_modifier.hh"
 
#include "BLI_string_utf8_symbols.h"
 
#include "BLT_translation.hh"
 
#include "DNA_dynamicpaint_types.h"
#include "DNA_modifier_types.h"
#include "DNA_scene_types.h"
 
#include "RNA_define.hh"
#include "RNA_enum_types.hh"
 
#include "rna_internal.hh"
 
#include "WM_types.hh"
 
const EnumPropertyItem rna_enum_prop_dynamicpaint_type_items[] = {
    {MOD_DYNAMICPAINT_TYPE_CANVAS, "CANVAS", 0, "Canvas", ""},
    {MOD_DYNAMICPAINT_TYPE_BRUSH, "BRUSH", 0, "Brush", ""},
    {0, nullptr, 0, nullptr, nullptr},
};
 
#ifdef RNA_RUNTIME
 
#  include <fmt/format.h>
 
#  include "BLI_string.h"
 
#  include "BKE_context.hh"
#  include "BKE_dynamicpaint.h"
#  include "BKE_particle.h"
 
#  include "DEG_depsgraph.hh"
#  include "DEG_depsgraph_build.hh"
 
static std::optional<std::string> rna_DynamicPaintCanvasSettings_path(const PointerRNA *ptr)
{
  const DynamicPaintCanvasSettings *settings = (DynamicPaintCanvasSettings *)ptr->data;
  const ModifierData *md = (ModifierData *)settings->pmd;
  char name_esc[sizeof(md->name) * 2];
 
  BLI_str_escape(name_esc, md->name, sizeof(name_esc));
  return fmt::format("modifiers[\"{}\"].canvas_settings", name_esc);
}
 
static std::optional<std::string> rna_DynamicPaintBrushSettings_path(const PointerRNA *ptr)
{
  const DynamicPaintBrushSettings *settings = (DynamicPaintBrushSettings *)ptr->data;
  const ModifierData *md = (ModifierData *)settings->pmd;
  char name_esc[sizeof(md->name) * 2];
 
  BLI_str_escape(name_esc, md->name, sizeof(name_esc));
  return fmt::format("modifiers[\"{}\"].brush_settings", name_esc);
}
 
static std::optional<std::string> rna_DynamicPaintSurface_path(const PointerRNA *ptr)
{
  const DynamicPaintSurface *surface = (DynamicPaintSurface *)ptr->data;
  const ModifierData *md = (ModifierData *)surface->canvas->pmd;
  char name_esc[sizeof(md->name) * 2];
  char name_esc_surface[sizeof(surface->name) * 2];
 
  BLI_str_escape(name_esc, md->name, sizeof(name_esc));
  BLI_str_escape(name_esc_surface, surface->name, sizeof(name_esc_surface));
  return fmt::format(
      "modifiers[\"{}\"].canvas_settings.canvas_surfaces[\"{}\"]", name_esc, name_esc_surface);
}
 
/*
 * Surfaces
 */
 
static void rna_DynamicPaint_redoModifier(Main * /*bmain*/, Scene * /*scene*/, PointerRNA *ptr)
{
  DEG_id_tag_update(ptr->owner_id, ID_RECALC_GEOMETRY);
}
 
static void rna_DynamicPaintSurfaces_updateFrames(Main * /*bmain*/,
                                                  Scene * /*scene*/,
                                                  PointerRNA *ptr)
{
  dynamicPaint_cacheUpdateFrames((DynamicPaintSurface *)ptr->data);
}
 
static void rna_DynamicPaintSurface_reset(Main *bmain, Scene *scene, PointerRNA *ptr)
{
  dynamicPaint_resetSurface(scene, (DynamicPaintSurface *)ptr->data);
  rna_DynamicPaint_redoModifier(bmain, scene, ptr);
}
 
static void rna_DynamicPaintSurface_initialcolortype(Main *bmain, Scene *scene, PointerRNA *ptr)
{
  DynamicPaintSurface *surface = (DynamicPaintSurface *)ptr->data;
 
  surface->init_layername[0] = '\0';
  dynamicPaint_clearSurface(scene, surface);
  rna_DynamicPaint_redoModifier(bmain, scene, ptr);
}
 
static void rna_DynamicPaintSurface_uniqueName(Main * /*bmain*/,
                                               Scene * /*scene*/,
                                               PointerRNA *ptr)
{
  dynamicPaintSurface_setUniqueName((DynamicPaintSurface *)ptr->data,
                                    ((DynamicPaintSurface *)ptr->data)->name);
}
 
static void rna_DynamicPaintSurface_changeType(Main *bmain, Scene *scene, PointerRNA *ptr)
{
  dynamicPaintSurface_updateType((DynamicPaintSurface *)ptr->data);
  dynamicPaint_resetSurface(scene, (DynamicPaintSurface *)ptr->data);
  rna_DynamicPaintSurface_reset(bmain, scene, ptr);
}
 
static void rna_DynamicPaintSurfaces_changeFormat(Main *bmain, Scene *scene, PointerRNA *ptr)
{
  DynamicPaintSurface *surface = (DynamicPaintSurface *)ptr->data;
 
  /* Only #MOD_DPAINT_SURFACE_F_VERTEX supports #MOD_DPAINT_SURFACE_T_WEIGHT. */
  if (surface->format == MOD_DPAINT_SURFACE_F_IMAGESEQ &&
      surface->type == MOD_DPAINT_SURFACE_T_WEIGHT)
  {
    surface->type = MOD_DPAINT_SURFACE_T_PAINT;
  }
 
  dynamicPaintSurface_updateType((DynamicPaintSurface *)ptr->data);
  rna_DynamicPaintSurface_reset(bmain, scene, ptr);
}
 
static void rna_DynamicPaint_reset_dependency(Main *bmain, Scene * /*scene*/, PointerRNA * /*ptr*/)
{
  DEG_relations_tag_update(bmain);
}
 
static void rna_DynamicPaintSurface_reset_dependency(Main *bmain, Scene *scene, PointerRNA *ptr)
{
  rna_DynamicPaintSurface_reset(bmain, scene, ptr);
  rna_DynamicPaint_reset_dependency(bmain, scene, ptr);
}
 
static PointerRNA rna_PaintSurface_active_get(PointerRNA *ptr)
{
  DynamicPaintCanvasSettings *canvas = (DynamicPaintCanvasSettings *)ptr->data;
  DynamicPaintSurface *surface = static_cast<DynamicPaintSurface *>(canvas->surfaces.first);
  int id = 0;
 
  for (; surface; surface = surface->next) {
    if (id == canvas->active_sur) {
      return RNA_pointer_create_with_parent(*ptr, &RNA_DynamicPaintSurface, surface);
    }
    id++;
  }
  return PointerRNA_NULL;
}
 
static void rna_DynamicPaint_surfaces_begin(CollectionPropertyIterator *iter, PointerRNA *ptr)
{
  DynamicPaintCanvasSettings *canvas = (DynamicPaintCanvasSettings *)ptr->data;
#  if 0
  rna_iterator_array_begin(
      iter, ptr,(void *)canvas->surfaces, sizeof(PaintSurface), canvas->totsur, 0, 0);
#  endif
  rna_iterator_listbase_begin(iter, ptr, &canvas->surfaces, nullptr);
}
 
static int rna_Surface_active_point_index_get(PointerRNA *ptr)
{
  DynamicPaintCanvasSettings *canvas = (DynamicPaintCanvasSettings *)ptr->data;
  return canvas->active_sur;
}
 
static void rna_Surface_active_point_index_set(PointerRNA *ptr, int value)
{
  DynamicPaintCanvasSettings *canvas = (DynamicPaintCanvasSettings *)ptr->data;
  canvas->active_sur = value;
}
 
static void rna_Surface_active_point_range(
    PointerRNA *ptr, int *min, int *max, int * /*softmin*/, int * /*softmax*/)
{
  DynamicPaintCanvasSettings *canvas = (DynamicPaintCanvasSettings *)ptr->data;
 
  *min = 0;
  *max = BLI_listbase_count(&canvas->surfaces) - 1;
}
 
/* uvlayer */
static void rna_DynamicPaint_uvlayer_set(PointerRNA *ptr, const char *value)
{
  DynamicPaintCanvasSettings *canvas = ((DynamicPaintSurface *)ptr->data)->canvas;
  DynamicPaintSurface *surface = static_cast<DynamicPaintSurface *>(canvas->surfaces.first);
  int id = 0;
 
  for (; surface; surface = surface->next) {
    if (id == canvas->active_sur) {
      rna_object_uvlayer_name_set(
          ptr, value, surface->uvlayer_name, sizeof(surface->uvlayer_name));
      return;
    }
    id++;
  }
}
 
/* is point cache used */
static bool rna_DynamicPaint_is_cache_user_get(PointerRNA *ptr)
{
  DynamicPaintSurface *surface = (DynamicPaintSurface *)ptr->data;
 
  return (surface->format != MOD_DPAINT_SURFACE_F_IMAGESEQ) ? true : false;
}
 
/* Does output layer exist. */
static bool rna_DynamicPaint_is_output_exists(DynamicPaintSurface *surface, Object *ob, int index)
{
  return dynamicPaint_outputLayerExists(surface, ob, index);
}
 
static const EnumPropertyItem *rna_DynamicPaint_surface_type_itemf(bContext * /*C*/,
                                                                   PointerRNA *ptr,
                                                                   PropertyRNA * /*prop*/,
                                                                   bool *r_free)
{
  DynamicPaintSurface *surface = (DynamicPaintSurface *)ptr->data;
 
  EnumPropertyItem *item = nullptr;
  EnumPropertyItem tmp = {0, "", 0, "", ""};
  int totitem = 0;
 
  /* Paint type - available for all formats */
  tmp.value = MOD_DPAINT_SURFACE_T_PAINT;
  tmp.identifier = "PAINT";
  tmp.name = "Paint";
  tmp.icon = ICON_TPAINT_HLT;
  RNA_enum_item_add(&item, &totitem, &tmp);
 
  /* Displace */
  if (ELEM(surface->format, MOD_DPAINT_SURFACE_F_VERTEX, MOD_DPAINT_SURFACE_F_IMAGESEQ)) {
    tmp.value = MOD_DPAINT_SURFACE_T_DISPLACE;
    tmp.identifier = "DISPLACE";
    tmp.name = "Displace";
    tmp.icon = ICON_MOD_DISPLACE;
    RNA_enum_item_add(&item, &totitem, &tmp);
  }
 
  /* Weight */
  if (surface->format == MOD_DPAINT_SURFACE_F_VERTEX) {
    tmp.value = MOD_DPAINT_SURFACE_T_WEIGHT;
    tmp.identifier = "WEIGHT";
    tmp.name = "Weight";
    tmp.icon = ICON_MOD_VERTEX_WEIGHT;
    RNA_enum_item_add(&item, &totitem, &tmp);
  }
 
  /* Height waves */
  {
    tmp.value = MOD_DPAINT_SURFACE_T_WAVE;
    tmp.identifier = "WAVE";
    tmp.name = "Waves";
    tmp.icon = ICON_MOD_WAVE;
    RNA_enum_item_add(&item, &totitem, &tmp);
  }
 
  RNA_enum_item_end(&item, &totitem);
  *r_free = true;
 
  return item;
}
 
#else
 
/* canvas.canvas_surfaces */
static void rna_def_canvas_surfaces(BlenderRNA *brna, PropertyRNA *cprop)
{
  StructRNA *srna;
  PropertyRNA *prop;
 
  RNA_def_property_srna(cprop, "DynamicPaintSurfaces");
  srna = RNA_def_struct(brna, "DynamicPaintSurfaces", nullptr);
  RNA_def_struct_sdna(srna, "DynamicPaintCanvasSettings");
  RNA_def_struct_ui_text(srna, "Canvas Surfaces", "Collection of Dynamic Paint Canvas surfaces");
 
  prop = RNA_def_property(srna, "active_index", PROP_INT, PROP_UNSIGNED);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_int_funcs(prop,
                             "rna_Surface_active_point_index_get",
                             "rna_Surface_active_point_index_set",
                             "rna_Surface_active_point_range");
  RNA_def_property_ui_text(prop, "Active Point Cache Index", "");
 
  prop = RNA_def_property(srna, "active", PROP_POINTER, PROP_NONE);
  RNA_def_property_struct_type(prop, "DynamicPaintSurface");
  RNA_def_property_pointer_funcs(prop, "rna_PaintSurface_active_get", nullptr, nullptr, nullptr);
  RNA_def_property_ui_text(prop, "Active Surface", "Active Dynamic Paint surface being displayed");
  RNA_def_property_update(prop, NC_OBJECT | ND_DRAW, nullptr);
}
 
static void rna_def_canvas_surface(BlenderRNA *brna)
{
  StructRNA *srna;
  PropertyRNA *prop;
  PropertyRNA *parm;
  FunctionRNA *func;
 
  /* Surface format */
  static const EnumPropertyItem prop_dynamicpaint_surface_format[] = {
      // {MOD_DPAINT_SURFACE_F_PTEX, "PTEX", ICON_TEXTURE_SHADED, "Ptex", ""},
      {MOD_DPAINT_SURFACE_F_VERTEX, "VERTEX", ICON_OUTLINER_DATA_MESH, "Vertex", ""},
      {MOD_DPAINT_SURFACE_F_IMAGESEQ, "IMAGE", ICON_FILE_IMAGE, "Image Sequence", ""},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  /* Surface type - generated dynamically based on surface format */
  static const EnumPropertyItem prop_dynamicpaint_surface_type[] = {
      {MOD_DPAINT_SURFACE_T_PAINT, "PAINT", 0, "Paint", ""},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  /* Initial color setting */
  static const EnumPropertyItem prop_dynamicpaint_init_color_type[] = {
      {MOD_DPAINT_INITIAL_NONE, "NONE", 0, "None", ""},
      {MOD_DPAINT_INITIAL_COLOR, "COLOR", ICON_COLOR, "Color", ""},
      {MOD_DPAINT_INITIAL_TEXTURE, "TEXTURE", ICON_TEXTURE, "UV Texture", ""},
      {MOD_DPAINT_INITIAL_VERTEXCOLOR, "VERTEX_COLOR", ICON_GROUP_VCOL, "Vertex Color", ""},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  /* Effect type
   * Only used by UI to view per effect settings. */
  static const EnumPropertyItem prop_dynamicpaint_effecttype[] = {
      {1, "SPREAD", 0, "Spread", ""},
      {2, "DRIP", 0, "Drip", ""},
      {3, "SHRINK", 0, "Shrink", ""},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  /* Displace-map file format. */
  static const EnumPropertyItem prop_dynamicpaint_image_fileformat[] = {
      {MOD_DPAINT_IMGFORMAT_PNG, "PNG", 0, "PNG", ""},
#  ifdef WITH_IMAGE_OPENEXR
      {MOD_DPAINT_IMGFORMAT_OPENEXR, "OPENEXR", 0, "OpenEXR", ""},
#  endif
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  /* Displace-map type. */
  static const EnumPropertyItem prop_dynamicpaint_displace_type[] = {
      {MOD_DPAINT_DISP_DISPLACE, "DISPLACE", 0, "Displacement", ""},
      {MOD_DPAINT_DISP_DEPTH, "DEPTH", 0, "Depth", ""},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  /* Surface */
  srna = RNA_def_struct(brna, "DynamicPaintSurface", nullptr);
  RNA_def_struct_sdna(srna, "DynamicPaintSurface");
  RNA_def_struct_ui_text(srna, "Paint Surface", "A canvas surface layer");
  RNA_def_struct_path_func(srna, "rna_DynamicPaintSurface_path");
 
  prop = RNA_def_property(srna, "surface_format", PROP_ENUM, PROP_NONE);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_enum_sdna(prop, nullptr, "format");
  RNA_def_property_enum_items(prop, prop_dynamicpaint_surface_format);
  RNA_def_property_ui_text(prop, "Format", "Surface Format");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaintSurfaces_changeFormat");
 
  prop = RNA_def_property(srna, "surface_type", PROP_ENUM, PROP_NONE);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_enum_sdna(prop, nullptr, "type");
  RNA_def_property_enum_items(prop, prop_dynamicpaint_surface_type);
  RNA_def_property_enum_funcs(prop, nullptr, nullptr, "rna_DynamicPaint_surface_type_itemf");
  RNA_def_property_ui_text(prop, "Surface Type", "Surface Type");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaintSurface_changeType");
 
  prop = RNA_def_property(srna, "is_active", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flags", MOD_DPAINT_ACTIVE);
  RNA_def_property_ui_text(prop, "Is Active", "Toggle whether surface is processed or ignored");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  prop = RNA_def_property(srna, "name", PROP_STRING, PROP_NONE);
  RNA_def_property_ui_text(prop, "Name", "Surface name");
  RNA_def_property_update(prop, NC_OBJECT, "rna_DynamicPaintSurface_uniqueName");
  RNA_def_struct_name_property(srna, prop);
 
  prop = RNA_def_property(srna, "brush_collection", PROP_POINTER, PROP_NONE);
  RNA_def_property_struct_type(prop, "Collection");
  RNA_def_property_pointer_sdna(prop, nullptr, "brush_group");
  RNA_def_property_flag(prop, PROP_EDITABLE);
  RNA_def_property_ui_text(
      prop, "Brush Collection", "Only use brush objects from this collection");
  RNA_def_property_update(
      prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaintSurface_reset_dependency");
 
  /*
   *   Paint, wet and displace
   */
 
  prop = RNA_def_property(srna, "use_dissolve", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flags", MOD_DPAINT_DISSOLVE);
  RNA_def_property_ui_text(prop, "Dissolve", "Enable to make surface changes disappear over time");
  RNA_def_property_translation_context(prop, BLT_I18NCONTEXT_ID_SIMULATION);
 
  prop = RNA_def_property(srna, "dissolve_speed", PROP_INT, PROP_TIME);
  RNA_def_property_int_sdna(prop, nullptr, "diss_speed");
  RNA_def_property_range(prop, 1.0, 10000.0);
  RNA_def_property_ui_range(prop, 1.0, 10000.0, 5, -1);
  RNA_def_property_ui_text(
      prop, "Dissolve Time", "Approximately in how many frames should dissolve happen");
 
  prop = RNA_def_property(srna, "use_drying", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flags", MOD_DPAINT_USE_DRYING);
  RNA_def_property_ui_text(prop, "Dry", "Enable to make surface wetness dry over time");
 
  prop = RNA_def_property(srna, "dry_speed", PROP_INT, PROP_TIME);
  RNA_def_property_range(prop, 1.0, 10000.0);
  RNA_def_property_ui_range(prop, 1.0, 10000.0, 5, -1);
  RNA_def_property_ui_text(
      prop, "Dry Time", "Approximately in how many frames should drying happen");
 
  /*
   *   Simulation settings
   */
  prop = RNA_def_property(srna, "image_resolution", PROP_INT, PROP_NONE);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_range(prop, 16.0, 4096.0);
  RNA_def_property_ui_range(prop, 16.0, 4096.0, 1, -1);
  RNA_def_property_ui_text(prop, "Resolution", "Output image resolution");
 
  prop = RNA_def_property(srna, "uv_layer", PROP_STRING, PROP_NONE);
  RNA_def_property_string_sdna(prop, nullptr, "uvlayer_name");
  RNA_def_property_ui_text(prop, "UV Map", "UV map name");
  RNA_def_property_string_funcs(prop, nullptr, nullptr, "rna_DynamicPaint_uvlayer_set");
 
  prop = RNA_def_property(srna, "frame_start", PROP_INT, PROP_NONE);
  RNA_def_property_int_sdna(prop, nullptr, "start_frame");
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_range(prop, 1.0, MAXFRAMEF);
  RNA_def_property_ui_range(prop, 1.0, 9999, 1, -1);
  RNA_def_property_ui_text(prop, "Start Frame", "Simulation start frame");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaintSurfaces_updateFrames");
 
  prop = RNA_def_property(srna, "frame_end", PROP_INT, PROP_NONE);
  RNA_def_property_int_sdna(prop, nullptr, "end_frame");
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_range(prop, 1.0, MAXFRAMEF);
  RNA_def_property_ui_range(prop, 1.0, 9999.0, 1, -1);
  RNA_def_property_ui_text(prop, "End Frame", "Simulation end frame");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaintSurfaces_updateFrames");
 
  prop = RNA_def_property(srna, "frame_substeps", PROP_INT, PROP_NONE);
  RNA_def_property_int_sdna(prop, nullptr, "substeps");
  RNA_def_property_range(prop, 0.0, 20.0);
  RNA_def_property_ui_range(prop, 0.0, 10, 1, -1);
  RNA_def_property_ui_text(
      prop, "Sub-Steps", "Do extra frames between scene frames to ensure smooth motion");
 
  prop = RNA_def_property(srna, "use_antialiasing", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flags", MOD_DPAINT_ANTIALIAS);
  RNA_def_property_ui_text(prop,
                           "Anti-Aliasing",
                           "Use 5" BLI_STR_UTF8_MULTIPLICATION_SIGN
                           " multisampling to smooth paint edges");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaintSurface_reset");
 
  prop = RNA_def_property(srna, "brush_influence_scale", PROP_FLOAT, PROP_FACTOR);
  RNA_def_property_float_sdna(prop, nullptr, "influence_scale");
  RNA_def_property_range(prop, 0.0, 1.0);
  RNA_def_property_ui_range(prop, 0.0, 1.0, 1, 2);
  RNA_def_property_ui_text(
      prop, "Influence Scale", "Adjust influence brush objects have on this surface");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  prop = RNA_def_property(srna, "brush_radius_scale", PROP_FLOAT, PROP_FACTOR);
  RNA_def_property_float_sdna(prop, nullptr, "radius_scale");
  RNA_def_property_range(prop, 0.0, 10.0);
  RNA_def_property_ui_range(prop, 0.0, 1.0, 1, 2);
  RNA_def_property_ui_text(
      prop, "Radius Scale", "Adjust radius of proximity brushes or particles for this surface");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  /*
   * Initial Color
   */
 
  prop = RNA_def_property(srna, "init_color_type", PROP_ENUM, PROP_NONE);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_enum_items(prop, prop_dynamicpaint_init_color_type);
  RNA_def_property_ui_text(prop, "Initial Color", "");
  RNA_def_property_update(prop,
                          NC_MATERIAL | ND_SHADING_DRAW | ND_MODIFIER,
                          "rna_DynamicPaintSurface_initialcolortype");
 
  prop = RNA_def_property(srna, "init_color", PROP_FLOAT, PROP_COLOR_GAMMA);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_array(prop, 4);
  RNA_def_property_ui_text(prop, "Color", "Initial color of the surface");
  RNA_def_property_update(
      prop, NC_MATERIAL | ND_SHADING_DRAW | ND_MODIFIER, "rna_DynamicPaintSurface_reset");
 
  prop = RNA_def_property(srna, "init_texture", PROP_POINTER, PROP_NONE);
  RNA_def_property_flag(prop, PROP_EDITABLE);
  RNA_def_property_ui_text(prop, "Texture", "");
  RNA_def_property_update(
      prop, NC_MATERIAL | ND_SHADING_DRAW | ND_MODIFIER, "rna_DynamicPaintSurface_reset");
 
  prop = RNA_def_property(srna, "init_layername", PROP_STRING, PROP_NONE);
  RNA_def_property_ui_text(prop, "Data Layer", "");
  RNA_def_property_update(
      prop, NC_MATERIAL | ND_SHADING_DRAW | ND_MODIFIER, "rna_DynamicPaintSurface_reset");
 
  /*
   * Effect Settings
   */
  prop = RNA_def_property(srna, "effect_ui", PROP_ENUM, PROP_NONE);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_enum_items(prop, prop_dynamicpaint_effecttype);
  RNA_def_property_ui_text(prop, "Effect Type", "");
 
  prop = RNA_def_property(srna, "use_dry_log", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flags", MOD_DPAINT_DRY_LOG);
  RNA_def_property_ui_text(
      prop, "Slow", "Use logarithmic drying (makes high values to dry faster than low values)");
 
  prop = RNA_def_property(srna, "use_dissolve_log", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flags", MOD_DPAINT_DISSOLVE_LOG);
  RNA_def_property_ui_text(
      prop, "Slow", "Use logarithmic dissolve (makes high values to fade faster than low values)");
 
  prop = RNA_def_property(srna, "use_spread", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_boolean_sdna(prop, nullptr, "effect", MOD_DPAINT_EFFECT_DO_SPREAD);
  RNA_def_property_ui_text(
      prop, "Use Spread", "Process spread effect (spread wet paint around surface)");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaintSurface_reset");
 
  prop = RNA_def_property(srna, "spread_speed", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "spread_speed");
  RNA_def_property_range(prop, 0.001, 10.0);
  RNA_def_property_ui_range(prop, 0.01, 5.0, 1, 2);
  RNA_def_property_ui_text(
      prop, "Spread Speed", "How fast spread effect moves on the canvas surface");
 
  prop = RNA_def_property(srna, "color_dry_threshold", PROP_FLOAT, PROP_FACTOR);
  RNA_def_property_float_sdna(prop, nullptr, "color_dry_threshold");
  RNA_def_property_range(prop, 0.0, 1.0);
  RNA_def_property_ui_range(prop, 0.0, 1.0, 1, 2);
  RNA_def_property_ui_text(
      prop, "Color Dry", "The wetness level when colors start to shift to the background");
 
  prop = RNA_def_property(srna, "color_spread_speed", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "color_spread_speed");
  RNA_def_property_range(prop, 0.0, 2.0);
  RNA_def_property_ui_range(prop, 0.0, 2.0, 1, 2);
  RNA_def_property_ui_text(prop, "Color Spread", "How fast colors get mixed within wet paint");
 
  prop = RNA_def_property(srna, "use_drip", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_boolean_sdna(prop, nullptr, "effect", MOD_DPAINT_EFFECT_DO_DRIP);
  RNA_def_property_ui_text(
      prop, "Use Drip", "Process drip effect (drip wet paint to gravity direction)");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaintSurface_reset");
 
  prop = RNA_def_property(srna, "use_shrink", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_boolean_sdna(prop, nullptr, "effect", MOD_DPAINT_EFFECT_DO_SHRINK);
  RNA_def_property_ui_text(prop, "Use Shrink", "Process shrink effect (shrink paint areas)");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaintSurface_reset");
 
  prop = RNA_def_property(srna, "shrink_speed", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "shrink_speed");
  RNA_def_property_range(prop, 0.001, 10.0);
  RNA_def_property_ui_range(prop, 0.01, 5.0, 1, 2);
  RNA_def_property_ui_text(
      prop, "Shrink Speed", "How fast shrink effect moves on the canvas surface");
 
  prop = RNA_def_property(srna, "effector_weights", PROP_POINTER, PROP_NONE);
  RNA_def_property_struct_type(prop, "EffectorWeights");
  RNA_def_property_clear_flag(prop, PROP_EDITABLE);
  RNA_def_property_override_flag(prop, PROPOVERRIDE_OVERRIDABLE_LIBRARY);
  RNA_def_property_ui_text(prop, "Effector Weights", "");
 
  prop = RNA_def_property(srna, "drip_velocity", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "drip_vel");
  RNA_def_property_range(prop, -200.0f, 200.0f);
  RNA_def_property_ui_range(prop, 0.0f, 1.0f, 0.1, 3);
  RNA_def_property_ui_text(prop, "Velocity", "How much surface velocity affects dripping");
 
  prop = RNA_def_property(srna, "drip_acceleration", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "drip_acc");
  RNA_def_property_range(prop, -200.0f, 200.0f);
  RNA_def_property_ui_range(prop, 0.0f, 1.0f, 0.1, 3);
  RNA_def_property_ui_text(prop, "Acceleration", "How much surface acceleration affects dripping");
 
  /*
   *   Output settings
   */
  prop = RNA_def_property(srna, "use_premultiply", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flags", MOD_DPAINT_MULALPHA);
  RNA_def_property_ui_text(
      prop, "Premultiply Alpha", "Multiply color by alpha (recommended for Blender input)");
 
  prop = RNA_def_property(srna, "image_output_path", PROP_STRING, PROP_DIRPATH);
  RNA_def_property_string_sdna(prop, nullptr, "image_output_path");
  RNA_def_property_flag(prop, PROP_PATH_SUPPORTS_BLEND_RELATIVE);
  RNA_def_property_ui_text(prop, "Output Path", "Directory to save the textures");
 
  /* output for primary surface data */
  prop = RNA_def_property(srna, "output_name_a", PROP_STRING, PROP_NONE);
  RNA_def_property_string_sdna(prop, nullptr, "output_name");
  RNA_def_property_ui_text(prop, "Output Name", "Name used to save output from this surface");
 
  prop = RNA_def_property(srna, "use_output_a", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flags", MOD_DPAINT_OUT1);
  RNA_def_property_ui_text(prop, "Use Output", "Save this output layer");
 
  /* Output for secondary surface data. */
  prop = RNA_def_property(srna, "output_name_b", PROP_STRING, PROP_NONE);
  RNA_def_property_string_sdna(prop, nullptr, "output_name2");
  RNA_def_property_ui_text(prop, "Output Name", "Name used to save output from this surface");
 
  prop = RNA_def_property(srna, "use_output_b", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flags", MOD_DPAINT_OUT2);
  RNA_def_property_ui_text(prop, "Use Output", "Save this output layer");
 
  /* to check if output name exists */
  func = RNA_def_function(srna, "output_exists", "rna_DynamicPaint_is_output_exists");
  RNA_def_function_ui_description(func, "Checks if surface output layer of given name exists");
  parm = RNA_def_pointer(func, "object", "Object", "", "");
  RNA_def_parameter_flags(parm, PROP_NEVER_NULL, PARM_REQUIRED);
  parm = RNA_def_int(func, "index", 0, 0, 1, "Index", "", 0, 1);
  RNA_def_parameter_flags(parm, PropertyFlag(0), PARM_REQUIRED);
  /* return type */
  parm = RNA_def_boolean(func, "exists", false, "", "");
  RNA_def_function_return(func, parm);
 
  prop = RNA_def_property(srna, "depth_clamp", PROP_FLOAT, PROP_NONE);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_range(prop, 0.00, 50.0);
  RNA_def_property_ui_range(prop, 0.00, 5.0, 1, 2);
  RNA_def_property_ui_text(
      prop,
      "Max Displace",
      "Maximum level of depth intersection in object space (use 0.0 to disable)");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  prop = RNA_def_property(srna, "displace_factor", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "disp_factor");
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_range(prop, -50.0, 50.0);
  RNA_def_property_ui_range(prop, -5.0, 5.0, 1, 2);
  RNA_def_property_ui_text(
      prop, "Displace Factor", "Strength of displace when applied to the mesh");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  prop = RNA_def_property(srna, "image_fileformat", PROP_ENUM, PROP_NONE);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_enum_items(prop, prop_dynamicpaint_image_fileformat);
  RNA_def_property_ui_text(prop, "File Format", "");
 
  prop = RNA_def_property(srna, "displace_type", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, nullptr, "disp_type");
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_enum_items(prop, prop_dynamicpaint_displace_type);
  RNA_def_property_ui_text(prop, "Data Type", "");
 
  prop = RNA_def_property(srna, "use_incremental_displace", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flags", MOD_DPAINT_DISP_INCREMENTAL);
  RNA_def_property_ui_text(
      prop, "Incremental", "New displace is added cumulatively on top of existing");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaintSurface_reset");
 
  /* wave simulator settings */
  prop = RNA_def_property(srna, "wave_damping", PROP_FLOAT, PROP_NONE);
  RNA_def_property_range(prop, 0.0, 1.0);
  RNA_def_property_ui_range(prop, 0.01, 1.0, 1, 2);
  RNA_def_property_ui_text(prop, "Damping", "Wave damping factor");
 
  prop = RNA_def_property(srna, "wave_speed", PROP_FLOAT, PROP_NONE);
  RNA_def_property_range(prop, 0.01, 5.0);
  RNA_def_property_ui_range(prop, 0.20, 4.0, 1, 2);
  RNA_def_property_ui_text(prop, "Speed", "Wave propagation speed");
 
  prop = RNA_def_property(srna, "wave_timescale", PROP_FLOAT, PROP_NONE);
  RNA_def_property_range(prop, 0.01, 3.0);
  RNA_def_property_ui_range(prop, 0.01, 1.5, 1, 2);
  RNA_def_property_ui_text(prop, "Timescale", "Wave time scaling factor");
 
  prop = RNA_def_property(srna, "wave_spring", PROP_FLOAT, PROP_NONE);
  RNA_def_property_range(prop, 0.0, 1.0);
  RNA_def_property_ui_range(prop, 0.01, 1.0, 1, 2);
  RNA_def_property_ui_text(prop, "Spring", "Spring force that pulls water level back to zero");
 
  prop = RNA_def_property(srna, "wave_smoothness", PROP_FLOAT, PROP_NONE);
  RNA_def_property_range(prop, 0.0, 10.0);
  RNA_def_property_ui_range(prop, 0.1, 5.0, 1, 2);
  RNA_def_property_ui_text(prop,
                           "Smoothness",
                           "Limit maximum steepness of wave slope between simulation points "
                           "(use higher values for smoother waves at expense of reduced detail)");
 
  prop = RNA_def_property(srna, "use_wave_open_border", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flags", MOD_DPAINT_WAVE_OPEN_BORDERS);
  RNA_def_property_ui_text(prop, "Open Borders", "Pass waves through mesh edges");
 
  /* cache */
  prop = RNA_def_property(srna, "point_cache", PROP_POINTER, PROP_NONE);
  RNA_def_property_flag(prop, PROP_NEVER_NULL);
  RNA_def_property_pointer_sdna(prop, nullptr, "pointcache");
  RNA_def_property_struct_type(prop, "PointCache");
  RNA_def_property_ui_text(prop, "Point Cache", "");
 
  /* is cache used */
  prop = RNA_def_property(srna, "is_cache_user", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_funcs(prop, "rna_DynamicPaint_is_cache_user_get", nullptr);
  RNA_def_property_ui_text(prop, "Use Cache", "");
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE | PROP_EDITABLE);
}
 
static void rna_def_dynamic_paint_canvas_settings(BlenderRNA *brna)
{
  StructRNA *srna;
  PropertyRNA *prop;
 
  srna = RNA_def_struct(brna, "DynamicPaintCanvasSettings", nullptr);
  RNA_def_struct_ui_text(srna, "Canvas Settings", "Dynamic Paint canvas settings");
  RNA_def_struct_sdna(srna, "DynamicPaintCanvasSettings");
  RNA_def_struct_path_func(srna, "rna_DynamicPaintCanvasSettings_path");
 
  /*
   * Surface Slots
   */
  prop = RNA_def_property(srna, "canvas_surfaces", PROP_COLLECTION, PROP_NONE);
  RNA_def_property_collection_funcs(prop,
                                    "rna_DynamicPaint_surfaces_begin",
                                    "rna_iterator_listbase_next",
                                    "rna_iterator_listbase_end",
                                    "rna_iterator_listbase_get",
                                    nullptr,
                                    nullptr,
                                    nullptr,
                                    nullptr);
  RNA_def_property_struct_type(prop, "DynamicPaintSurface");
  RNA_def_property_ui_text(prop, "Paint Surface List", "Paint surface list");
  rna_def_canvas_surfaces(brna, prop);
}
 
static void rna_def_dynamic_paint_brush_settings(BlenderRNA *brna)
{
  StructRNA *srna;
  PropertyRNA *prop;
 
  /* paint collision type */
  static const EnumPropertyItem prop_dynamicpaint_collisiontype[] = {
      {MOD_DPAINT_COL_PSYS, "PARTICLE_SYSTEM", ICON_PARTICLES, "Particle System", ""},
      {MOD_DPAINT_COL_POINT, "POINT", ICON_EMPTY_AXIS, "Object Center", ""},
      {MOD_DPAINT_COL_DIST, "DISTANCE", ICON_DRIVER_DISTANCE, "Proximity", ""},
      {MOD_DPAINT_COL_VOLDIST, "VOLUME_DISTANCE", ICON_META_CUBE, "Mesh Volume + Proximity", ""},
      {MOD_DPAINT_COL_VOLUME, "VOLUME", ICON_MESH_CUBE, "Mesh Volume", ""},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  static const EnumPropertyItem prop_dynamicpaint_prox_falloff[] = {
      {MOD_DPAINT_PRFALL_SMOOTH, "SMOOTH", ICON_SPHERECURVE, "Smooth", ""},
      {MOD_DPAINT_PRFALL_CONSTANT, "CONSTANT", ICON_NOCURVE, "Constant", ""},
      {MOD_DPAINT_PRFALL_RAMP, "RAMP", ICON_COLOR, "Color Ramp", ""},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  static const EnumPropertyItem prop_dynamicpaint_brush_wave_type[] = {
      {MOD_DPAINT_WAVEB_CHANGE, "CHANGE", 0, "Depth Change", ""},
      {MOD_DPAINT_WAVEB_DEPTH, "DEPTH", 0, "Obstacle", ""},
      {MOD_DPAINT_WAVEB_FORCE, "FORCE", 0, "Force", ""},
      {MOD_DPAINT_WAVEB_REFLECT, "REFLECT", 0, "Reflect Only", ""},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  static const EnumPropertyItem prop_dynamicpaint_brush_ray_dir[] = {
      {MOD_DPAINT_RAY_CANVAS, "CANVAS", 0, "Canvas Normal", ""},
      {MOD_DPAINT_RAY_BRUSH_AVG, "BRUSH", 0, "Brush Normal", ""},
      {MOD_DPAINT_RAY_ZPLUS, "Z_AXIS", 0, "Z-Axis", ""},
      {0, nullptr, 0, nullptr, nullptr},
  };
 
  srna = RNA_def_struct(brna, "DynamicPaintBrushSettings", nullptr);
  RNA_def_struct_ui_text(srna, "Brush Settings", "Brush settings");
  RNA_def_struct_sdna(srna, "DynamicPaintBrushSettings");
  RNA_def_struct_path_func(srna, "rna_DynamicPaintBrushSettings_path");
 
  /*
   *   Paint
   */
  prop = RNA_def_property(srna, "paint_color", PROP_FLOAT, PROP_COLOR_GAMMA);
  RNA_def_property_float_sdna(prop, nullptr, "r");
  RNA_def_property_array(prop, 3);
  RNA_def_property_ui_text(prop, "Paint Color", "Color of the paint");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  prop = RNA_def_property(srna, "paint_alpha", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "alpha");
  RNA_def_property_range(prop, 0.0, 1.0);
  RNA_def_property_ui_range(prop, 0.0, 1.0, 5, 2);
  RNA_def_property_ui_text(prop, "Paint Alpha", "Paint alpha");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  prop = RNA_def_property(srna, "use_absolute_alpha", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flags", MOD_DPAINT_ABS_ALPHA);
  RNA_def_property_ui_text(
      prop, "Absolute Alpha", "Only increase alpha value if paint alpha is higher than existing");
 
  prop = RNA_def_property(srna, "paint_wetness", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "wetness");
  RNA_def_property_range(prop, 0.0, 1.0);
  RNA_def_property_ui_range(prop, 0.0, 1.0, 5, 2);
  RNA_def_property_ui_text(
      prop,
      "Paint Wetness",
      "Paint wetness, visible in wetmap (some effects only affect wet paint)");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  prop = RNA_def_property(srna, "use_paint_erase", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flags", MOD_DPAINT_ERASE);
  RNA_def_property_ui_text(prop, "Erase Paint", "Erase / remove paint instead of adding it");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  prop = RNA_def_property(srna, "wave_type", PROP_ENUM, PROP_NONE);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_enum_items(prop, prop_dynamicpaint_brush_wave_type);
  RNA_def_property_ui_text(prop, "Wave Type", "");
  RNA_def_property_translation_context(prop, BLT_I18NCONTEXT_ID_SIMULATION);
 
  prop = RNA_def_property(srna, "wave_factor", PROP_FLOAT, PROP_NONE);
  RNA_def_property_range(prop, -2.0, 2.0);
  RNA_def_property_ui_range(prop, -1.0, 1.0, 5, 2);
  RNA_def_property_ui_text(prop, "Factor", "Multiplier for wave influence of this brush");
 
  prop = RNA_def_property(srna, "wave_clamp", PROP_FLOAT, PROP_NONE);
  RNA_def_property_range(prop, 0.00, 50.0);
  RNA_def_property_ui_range(prop, 0.00, 5.0, 1, 2);
  RNA_def_property_ui_text(
      prop,
      "Clamp Waves",
      "Maximum level of surface intersection used to influence waves (use 0.0 to disable)");
 
  prop = RNA_def_property(srna, "use_smudge", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flags", MOD_DPAINT_DO_SMUDGE);
  RNA_def_property_ui_text(
      prop, "Do Smudge", "Make this brush to smudge existing paint as it moves");
 
  prop = RNA_def_property(srna, "smudge_strength", PROP_FLOAT, PROP_NONE);
  RNA_def_property_range(prop, 0.0, 1.0);
  RNA_def_property_ui_range(prop, 0.0, 1.0, 5, 2);
  RNA_def_property_ui_text(prop, "Smudge Strength", "Smudge effect strength");
 
  prop = RNA_def_property(srna, "velocity_max", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "max_velocity");
  RNA_def_property_range(prop, 0.0001, 10.0);
  RNA_def_property_ui_range(prop, 0.1, 2.0, 5, 2);
  RNA_def_property_ui_text(
      prop, "Max Velocity", "Velocity considered as maximum influence (Blender units per frame)");
 
  prop = RNA_def_property(srna, "use_velocity_alpha", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flags", MOD_DPAINT_VELOCITY_ALPHA);
  RNA_def_property_ui_text(
      prop, "Multiply Alpha", "Multiply brush influence by velocity color ramp alpha");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  prop = RNA_def_property(srna, "use_velocity_depth", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flags", MOD_DPAINT_VELOCITY_DEPTH);
  RNA_def_property_ui_text(
      prop,
      "Multiply Depth",
      "Multiply brush intersection depth (displace, waves) by velocity ramp alpha");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  prop = RNA_def_property(srna, "use_velocity_color", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flags", MOD_DPAINT_VELOCITY_COLOR);
  RNA_def_property_ui_text(prop, "Replace Color", "Replace brush color by velocity color ramp");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  /*
   *   Paint Area / Collision
   */
  prop = RNA_def_property(srna, "paint_source", PROP_ENUM, PROP_NONE);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_enum_sdna(prop, nullptr, "collision");
  RNA_def_property_enum_items(prop, prop_dynamicpaint_collisiontype);
  RNA_def_property_ui_text(prop, "Paint Source", "");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  prop = RNA_def_property(srna, "paint_distance", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "paint_distance");
  RNA_def_property_range(prop, 0.0, 500.0);
  RNA_def_property_ui_range(prop, 0.0, 500.0, 10, 3);
  RNA_def_property_ui_text(
      prop, "Proximity Distance", "Maximum distance from brush to mesh surface to affect paint");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  prop = RNA_def_property(srna, "use_proximity_ramp_alpha", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flags", MOD_DPAINT_RAMP_ALPHA);
  RNA_def_property_ui_text(prop, "Only Use Alpha", "Only read color ramp alpha");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  prop = RNA_def_property(srna, "proximity_falloff", PROP_ENUM, PROP_NONE);
  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
  RNA_def_property_enum_sdna(prop, nullptr, "proximity_falloff");
  RNA_def_property_enum_items(prop, prop_dynamicpaint_prox_falloff);
  RNA_def_property_ui_text(prop, "Falloff", "Proximity falloff type");
  RNA_def_property_translation_context(prop, BLT_I18NCONTEXT_ID_BRUSH);
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  prop = RNA_def_property(srna, "use_proximity_project", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flags", MOD_DPAINT_PROX_PROJECT);
  RNA_def_property_ui_text(
      prop,
      "Project",
      "Brush is projected to canvas from defined direction within brush proximity");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  prop = RNA_def_property(srna, "ray_direction", PROP_ENUM, PROP_NONE);
  RNA_def_property_enum_sdna(prop, nullptr, "ray_dir");
  RNA_def_property_enum_items(prop, prop_dynamicpaint_brush_ray_dir);
  RNA_def_property_ui_text(
      prop,
      "Ray Direction",
      "Ray direction to use for projection (if brush object is located in that direction "
      "it's painted)");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  prop = RNA_def_property(srna, "invert_proximity", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flags", MOD_DPAINT_INVERSE_PROX);
  RNA_def_property_ui_text(
      prop, "Inner Proximity", "Proximity falloff is applied inside the volume");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  prop = RNA_def_property(srna, "use_negative_volume", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flags", MOD_DPAINT_NEGATE_VOLUME);
  RNA_def_property_ui_text(prop, "Negate Volume", "Negate influence inside the volume");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  /*
   *   Particle
   */
  prop = RNA_def_property(srna, "particle_system", PROP_POINTER, PROP_NONE);
  RNA_def_property_pointer_sdna(prop, nullptr, "psys");
  RNA_def_property_struct_type(prop, "ParticleSystem");
  RNA_def_property_flag(prop, PROP_EDITABLE);
  RNA_def_property_ui_text(prop, "Particle Systems", "The particle system to paint with");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_reset_dependency");
 
  prop = RNA_def_property(srna, "use_particle_radius", PROP_BOOLEAN, PROP_NONE);
  RNA_def_property_boolean_sdna(prop, nullptr, "flags", MOD_DPAINT_PART_RAD);
  RNA_def_property_ui_text(prop, "Use Particle Radius", "Use radius from particle settings");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  prop = RNA_def_property(srna, "solid_radius", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "particle_radius");
  RNA_def_property_range(prop, 0.01, 10.0);
  RNA_def_property_ui_range(prop, 0.01, 2.0, 5, 3);
  RNA_def_property_ui_text(prop, "Solid Radius", "Radius that will be painted solid");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  prop = RNA_def_property(srna, "smooth_radius", PROP_FLOAT, PROP_NONE);
  RNA_def_property_float_sdna(prop, nullptr, "particle_smooth");
  RNA_def_property_range(prop, 0.0, 10.0);
  RNA_def_property_ui_range(prop, 0.0, 1.0, 5, -1);
  RNA_def_property_ui_text(prop, "Smooth Radius", "Smooth falloff added after solid radius");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  /*
   * Color ramps
   */
  prop = RNA_def_property(srna, "paint_ramp", PROP_POINTER, PROP_NONE);
  RNA_def_property_pointer_sdna(prop, nullptr, "paint_ramp");
  RNA_def_property_struct_type(prop, "ColorRamp");
  RNA_def_property_ui_text(
      prop, "Paint Color Ramp", "Color ramp used to define proximity falloff");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
 
  prop = RNA_def_property(srna, "velocity_ramp", PROP_POINTER, PROP_NONE);
  RNA_def_property_pointer_sdna(prop, nullptr, "vel_ramp");
  RNA_def_property_struct_type(prop, "ColorRamp");
  RNA_def_property_ui_text(
      prop, "Velocity Color Ramp", "Color ramp used to define brush velocity effect");
  RNA_def_property_update(prop, NC_OBJECT | ND_MODIFIER, "rna_DynamicPaint_redoModifier");
}
 
void RNA_def_dynamic_paint(BlenderRNA *brna)
{
  rna_def_dynamic_paint_canvas_settings(brna);
  rna_def_dynamic_paint_brush_settings(brna);
  rna_def_canvas_surface(brna);
}
 
#endif