rna_cloth.c

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/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * Contributor(s): Blender Foundation (2008)
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#include <stdlib.h>
#include <limits.h>

#include "RNA_define.h"

#include "rna_internal.h"

#include "BKE_cloth.h"
#include "BKE_modifier.h"

#include "DNA_cloth_types.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"

#include "WM_api.h"
#include "WM_types.h"

#ifdef RNA_RUNTIME

#include "BKE_context.h"
#include "BKE_depsgraph.h"

static void rna_cloth_update(Main *UNUSED(bmain), Scene *UNUSED(scene), PointerRNA *ptr)
{
    Object *ob= (Object*)ptr->id.data;

    DAG_id_tag_update(&ob->id, OB_RECALC_DATA);
    WM_main_add_notifier(NC_OBJECT|ND_MODIFIER, ob);
}

static void rna_cloth_pinning_changed(Main *UNUSED(bmain), Scene *UNUSED(scene), PointerRNA *ptr)
{
    Object *ob= (Object*)ptr->id.data;
//  ClothSimSettings *settings = (ClothSimSettings*)ptr->data;
    ClothModifierData *clmd = (ClothModifierData*)modifiers_findByType(ob, eModifierType_Cloth);

    cloth_free_modifier(clmd);

    DAG_id_tag_update(&ob->id, OB_RECALC_DATA);
    WM_main_add_notifier(NC_OBJECT|ND_MODIFIER, ob);
}

static void rna_cloth_reset(Main *UNUSED(bmain), Scene *UNUSED(scene), PointerRNA *ptr)
{
    Object *ob= (Object*)ptr->id.data;
    ClothSimSettings *settings = (ClothSimSettings*)ptr->data;

    settings->reset = 1;

    DAG_id_tag_update(&ob->id, OB_RECALC_DATA);
    WM_main_add_notifier(NC_OBJECT|ND_MODIFIER, ob);
}


static void rna_ClothSettings_max_bend_set(struct PointerRNA *ptr, float value)
{
    ClothSimSettings *settings = (ClothSimSettings*)ptr->data;
    
    /* check for clipping */
    if(value < settings->bending)
        value = settings->bending;
    
    settings->max_bend = value;
}

static void rna_ClothSettings_max_struct_set(struct PointerRNA *ptr, float value)
{
    ClothSimSettings *settings = (ClothSimSettings*)ptr->data;
    
    /* check for clipping */
    if(value < settings->structural)
        value = settings->structural;
    
    settings->max_struct = value;
}

static void rna_ClothSettings_mass_vgroup_get(PointerRNA *ptr, char *value)
{
    ClothSimSettings *sim= (ClothSimSettings*)ptr->data;
    rna_object_vgroup_name_index_get(ptr, value, sim->vgroup_mass);
}

static int rna_ClothSettings_mass_vgroup_length(PointerRNA *ptr)
{
    ClothSimSettings *sim= (ClothSimSettings*)ptr->data;
    return rna_object_vgroup_name_index_length(ptr, sim->vgroup_mass);
}

static void rna_ClothSettings_mass_vgroup_set(PointerRNA *ptr, const char *value)
{
    ClothSimSettings *sim= (ClothSimSettings*)ptr->data;
    rna_object_vgroup_name_index_set(ptr, value, &sim->vgroup_mass);
}

static void rna_ClothSettings_struct_vgroup_get(PointerRNA *ptr, char *value)
{
    ClothSimSettings *sim= (ClothSimSettings*)ptr->data;
    rna_object_vgroup_name_index_get(ptr, value, sim->vgroup_struct);
}

static int rna_ClothSettings_struct_vgroup_length(PointerRNA *ptr)
{
    ClothSimSettings *sim= (ClothSimSettings*)ptr->data;
    return rna_object_vgroup_name_index_length(ptr, sim->vgroup_struct);
}

static void rna_ClothSettings_struct_vgroup_set(PointerRNA *ptr, const char *value)
{
    ClothSimSettings *sim= (ClothSimSettings*)ptr->data;
    rna_object_vgroup_name_index_set(ptr, value, &sim->vgroup_struct);
}

static void rna_ClothSettings_bend_vgroup_get(PointerRNA *ptr, char *value)
{
    ClothSimSettings *sim= (ClothSimSettings*)ptr->data;
    rna_object_vgroup_name_index_get(ptr, value, sim->vgroup_bend);
}

static int rna_ClothSettings_bend_vgroup_length(PointerRNA *ptr)
{
    ClothSimSettings *sim= (ClothSimSettings*)ptr->data;
    return rna_object_vgroup_name_index_length(ptr, sim->vgroup_bend);
}

static void rna_ClothSettings_bend_vgroup_set(PointerRNA *ptr, const char *value)
{
    ClothSimSettings *sim= (ClothSimSettings*)ptr->data;
    rna_object_vgroup_name_index_set(ptr, value, &sim->vgroup_bend);
}

static PointerRNA rna_ClothSettings_rest_shape_key_get(PointerRNA *ptr)
{
    Object *ob= (Object*)ptr->id.data;
    ClothSimSettings *sim= (ClothSimSettings*)ptr->data;

    return rna_object_shapekey_index_get(ob->data, sim->shapekey_rest);
}

static void rna_ClothSettings_rest_shape_key_set(PointerRNA *ptr, PointerRNA value)
{
    Object *ob= (Object*)ptr->id.data;
    ClothSimSettings *sim= (ClothSimSettings*)ptr->data;

    sim->shapekey_rest= rna_object_shapekey_index_set(ob->data, value, sim->shapekey_rest);
}

static void rna_ClothSettings_gravity_get(PointerRNA *ptr, float *values)
{
    ClothSimSettings *sim= (ClothSimSettings*)ptr->data;

    values[0]= sim->gravity[0];
    values[1]= sim->gravity[1];
    values[2]= sim->gravity[2];
}

static void rna_ClothSettings_gravity_set(PointerRNA *ptr, const float *values)
{
    ClothSimSettings *sim= (ClothSimSettings*)ptr->data;

    sim->gravity[0]= values[0];
    sim->gravity[1]= values[1];
    sim->gravity[2]= values[2];
}

static char *rna_ClothSettings_path(PointerRNA *ptr)
{
    Object *ob= (Object*)ptr->id.data;
    ModifierData *md= modifiers_findByType(ob, eModifierType_Cloth);

    return md ? BLI_sprintfN("modifiers[\"%s\"].settings", md->name) : NULL;
}

static char *rna_ClothCollisionSettings_path(PointerRNA *ptr)
{
    Object *ob= (Object*)ptr->id.data;
    ModifierData *md= modifiers_findByType(ob, eModifierType_Cloth);

    return md ? BLI_sprintfN("modifiers[\"%s\"].collision_settings", md->name) : NULL;
}

#else

static void rna_def_cloth_sim_settings(BlenderRNA *brna)
{
    StructRNA *srna;
    PropertyRNA *prop;
    
    srna = RNA_def_struct(brna, "ClothSettings", NULL);
    RNA_def_struct_ui_text(srna, "Cloth Settings", "Cloth simulation settings for an object");
    RNA_def_struct_sdna(srna, "ClothSimSettings");
    RNA_def_struct_path_func(srna, "rna_ClothSettings_path");
    
    /* goal */
    
    prop= RNA_def_property(srna, "goal_min", PROP_FLOAT, PROP_NONE);
    RNA_def_property_float_sdna(prop, NULL, "mingoal");
    RNA_def_property_range(prop, 0.0f, 1.0f);
    RNA_def_property_ui_text(prop, "Goal Minimum", "Goal minimum, vertex group weights are scaled to match this range");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    prop= RNA_def_property(srna, "goal_max", PROP_FLOAT, PROP_NONE);
    RNA_def_property_float_sdna(prop, NULL, "maxgoal");
    RNA_def_property_range(prop, 0.0f, 1.0f);
    RNA_def_property_ui_text(prop, "Goal Maximum", "Goal maximum, vertex group weights are scaled to match this range");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    prop= RNA_def_property(srna, "goal_default", PROP_FLOAT, PROP_NONE);
    RNA_def_property_float_sdna(prop, NULL, "defgoal");
    RNA_def_property_range(prop, 0.0f, 1.0f);
    RNA_def_property_ui_text(prop, "Goal Default", "Default Goal (vertex target position) value, when no Vertex Group used");
    RNA_def_property_update(prop, 0, "rna_cloth_update");
    
    prop= RNA_def_property(srna, "goal_spring", PROP_FLOAT, PROP_NONE);
    RNA_def_property_float_sdna(prop, NULL, "goalspring");
    RNA_def_property_range(prop, 0.0f, 0.999f);
    RNA_def_property_ui_text(prop, "Goal Stiffness", "Goal (vertex target position) spring stiffness");
    RNA_def_property_update(prop, 0, "rna_cloth_update");
    
    prop= RNA_def_property(srna, "goal_friction", PROP_FLOAT, PROP_NONE);
    RNA_def_property_float_sdna(prop, NULL, "goalfrict");
    RNA_def_property_range(prop, 0.0f, 50.0f);
    RNA_def_property_ui_text(prop, "Goal Damping", "Goal (vertex target position) friction");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    prop= RNA_def_property(srna, "internal_friction", PROP_FLOAT, PROP_NONE);
    RNA_def_property_float_sdna(prop, NULL, "velocity_smooth");
    RNA_def_property_range(prop, 0.0f, 1.0f);
    RNA_def_property_ui_text(prop, "Internal Friction", "");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    prop= RNA_def_property(srna, "collider_friction", PROP_FLOAT, PROP_NONE);
    RNA_def_property_float_sdna(prop, NULL, "collider_friction");
    RNA_def_property_range(prop, 0.0f, 1.0f);
    RNA_def_property_ui_text(prop, "Collider Friction", "");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    /* mass */

    prop= RNA_def_property(srna, "mass", PROP_FLOAT, PROP_NONE);
    RNA_def_property_range(prop, 0.0f, 10.0f);
    RNA_def_property_ui_text(prop, "Mass", "Mass of cloth material");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    prop= RNA_def_property(srna, "vertex_group_mass", PROP_STRING, PROP_NONE);
    RNA_def_property_string_funcs(prop, "rna_ClothSettings_mass_vgroup_get", "rna_ClothSettings_mass_vgroup_length",
                                  "rna_ClothSettings_mass_vgroup_set");
    RNA_def_property_ui_text(prop, "Mass Vertex Group", "Vertex Group for pinning of vertices");
    RNA_def_property_update(prop, 0, "rna_cloth_pinning_changed");
    
    prop= RNA_def_property(srna, "gravity", PROP_FLOAT, PROP_ACCELERATION);
    RNA_def_property_array(prop, 3);
    RNA_def_property_range(prop, -100.0, 100.0);
    RNA_def_property_float_funcs(prop, "rna_ClothSettings_gravity_get", "rna_ClothSettings_gravity_set", NULL);
    RNA_def_property_ui_text(prop, "Gravity", "Gravity or external force vector");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    /* various */

    prop= RNA_def_property(srna, "air_damping", PROP_FLOAT, PROP_NONE);
    RNA_def_property_float_sdna(prop, NULL, "Cvi");
    RNA_def_property_range(prop, 0.0f, 10.0f);
    RNA_def_property_ui_text(prop, "Air Damping", "Air has normally some thickness which slows falling things down");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    prop= RNA_def_property(srna, "use_pin_cloth", PROP_BOOLEAN, PROP_NONE);
    RNA_def_property_boolean_sdna(prop, NULL, "flags", CLOTH_SIMSETTINGS_FLAG_GOAL);
    RNA_def_property_ui_text(prop, "Pin Cloth", "Enable pinning of cloth vertices to other objects/positions");
    RNA_def_property_update(prop, 0, "rna_cloth_pinning_changed");
    RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);

    prop= RNA_def_property(srna, "pin_stiffness", PROP_FLOAT, PROP_NONE);
    RNA_def_property_float_sdna(prop, NULL, "goalspring");
    RNA_def_property_range(prop, 0.0f, 50.0);
    RNA_def_property_ui_text(prop, "Pin Stiffness", "Pin (vertex target position) spring stiffness");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    prop= RNA_def_property(srna, "quality", PROP_INT, PROP_NONE);
    RNA_def_property_int_sdna(prop, NULL, "stepsPerFrame");
    RNA_def_property_range(prop, 4, 80);
    RNA_def_property_ui_text(prop, "Quality",
                             "Quality of the simulation in steps per frame (higher is better quality but slower)");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    /* springs */

    prop= RNA_def_property(srna, "use_stiffness_scale", PROP_BOOLEAN, PROP_NONE);
    RNA_def_property_boolean_sdna(prop, NULL, "flags", CLOTH_SIMSETTINGS_FLAG_SCALING);
    RNA_def_property_ui_text(prop, "Stiffness Scaling",
                             "If enabled, stiffness can be scaled along a weight painted vertex group");
    RNA_def_property_update(prop, 0, "rna_cloth_update");
    RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
    
    prop= RNA_def_property(srna, "spring_damping", PROP_FLOAT, PROP_NONE);
    RNA_def_property_float_sdna(prop, NULL, "Cdis");
    RNA_def_property_range(prop, 0.0f, 50.0f);
    RNA_def_property_ui_text(prop, "Spring Damping", "Damping of cloth velocity (higher = more smooth, less jiggling)");
    RNA_def_property_update(prop, 0, "rna_cloth_update");
    
    prop= RNA_def_property(srna, "structural_stiffness", PROP_FLOAT, PROP_NONE);
    RNA_def_property_float_sdna(prop, NULL, "structural");
    RNA_def_property_range(prop, 0.0f, 10000.0f);
    RNA_def_property_ui_text(prop, "Structural Stiffness", "Overall stiffness of structure");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    prop= RNA_def_property(srna, "structural_stiffness_max", PROP_FLOAT, PROP_NONE);
    RNA_def_property_float_sdna(prop, NULL, "max_struct");
    RNA_def_property_range(prop, 0.0f, 10000.0f);
    RNA_def_property_float_funcs(prop, NULL, "rna_ClothSettings_max_struct_set", NULL);
    RNA_def_property_ui_text(prop, "Structural Stiffness Maximum", "Maximum structural stiffness value");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    prop= RNA_def_property(srna, "vertex_group_structural_stiffness", PROP_STRING, PROP_NONE);
    RNA_def_property_string_funcs(prop, "rna_ClothSettings_struct_vgroup_get", "rna_ClothSettings_struct_vgroup_length",
                                  "rna_ClothSettings_struct_vgroup_set");
    RNA_def_property_ui_text(prop, "Structural Stiffness Vertex Group",
                             "Vertex group for fine control over structural stiffness");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    prop= RNA_def_property(srna, "bending_stiffness", PROP_FLOAT, PROP_NONE);
    RNA_def_property_float_sdna(prop, NULL, "bending");
    RNA_def_property_range(prop, 0.0f, 10000.0f);
    RNA_def_property_ui_text(prop, "Bending Stiffness", "Wrinkle coefficient (higher = less smaller but more big wrinkles)");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    prop= RNA_def_property(srna, "bending_stiffness_max", PROP_FLOAT, PROP_NONE);
    RNA_def_property_float_sdna(prop, NULL, "max_bend");
    RNA_def_property_range(prop, 0.0f, 10000.0f);
    RNA_def_property_float_funcs(prop, NULL, "rna_ClothSettings_max_bend_set", NULL);
    RNA_def_property_ui_text(prop, "Bending Stiffness Maximum", "Maximum bending stiffness value");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    prop= RNA_def_property(srna, "vertex_group_bending", PROP_STRING, PROP_NONE);
    RNA_def_property_string_funcs(prop, "rna_ClothSettings_bend_vgroup_get", "rna_ClothSettings_bend_vgroup_length",
                                  "rna_ClothSettings_bend_vgroup_set");
    RNA_def_property_ui_text(prop, "Bending Stiffness Vertex Group", "Vertex group for fine control over bending stiffness");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    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_ui_text(prop, "Effector Weights", "");

    prop= RNA_def_property(srna, "pre_roll", PROP_INT, PROP_NONE);
    RNA_def_property_int_sdna(prop, NULL, "preroll");
    RNA_def_property_range(prop, 0, 200);
    RNA_def_property_ui_text(prop, "Pre Roll", "Simulation starts on this frame");
    RNA_def_property_update(prop, 0, "rna_cloth_reset");

    prop= RNA_def_property(srna, "rest_shape_key", PROP_POINTER, PROP_NONE);
    RNA_def_property_flag(prop, PROP_EDITABLE);
    RNA_def_property_struct_type(prop, "ShapeKey");
    RNA_def_property_pointer_funcs(prop, "rna_ClothSettings_rest_shape_key_get",
                                   "rna_ClothSettings_rest_shape_key_set", NULL, NULL);
    RNA_def_property_ui_text(prop, "Rest Shape Key", "Shape key to use the rest spring lengths from");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    /* unused */

    /* unused still
    prop= RNA_def_property(srna, "shear_stiffness", PROP_FLOAT, PROP_NONE);
    RNA_def_property_float_sdna(prop, NULL, "shear");
    RNA_def_property_range(prop, 0.0f, 1000.0f);
    RNA_def_property_ui_text(prop, "Shear Stiffness", "Shear spring stiffness"); */

    /* unused still
    prop= RNA_def_property(srna, "shear_stiffness_max", PROP_FLOAT, PROP_NONE);
    RNA_def_property_float_sdna(prop, NULL, "max_shear");
    RNA_def_property_range(prop, 0.0f, upperLimitf);
    RNA_def_property_ui_text(prop, "Shear Stiffness Maximum", "Maximum shear scaling value"); */
    
    /* unused still
    prop= RNA_def_property(srna, "effector_force_scale", PROP_FLOAT, PROP_NONE);
    RNA_def_property_float_sdna(prop, NULL, "eff_force_scale");
    RNA_def_property_range(prop, 0.0f, 100.0f);
    RNA_def_property_ui_text(prop, "Effector Force Scale", ""); */

    /* unused still
    prop= RNA_def_property(srna, "effector_wind_scale", PROP_FLOAT, PROP_NONE);
    RNA_def_property_float_sdna(prop, NULL, "eff_wind_scale");
    RNA_def_property_range(prop, 0.0f, 100.0f);
    RNA_def_property_ui_text(prop, "Effector Wind Scale", ""); */
    
    /* unused still
    prop= RNA_def_property(srna, "tearing", PROP_BOOLEAN, PROP_NONE);
    RNA_def_property_boolean_sdna(prop, NULL, "flags", CLOTH_SIMSETTINGS_FLAG_TEARING);
    RNA_def_property_ui_text(prop, "Tearing", "");*/
    
    /* unused still
    prop= RNA_def_property(srna, "max_spring_extensions", PROP_INT, PROP_NONE);
    RNA_def_property_int_sdna(prop, NULL, "maxspringlen");
    RNA_def_property_range(prop, 1.0, 1000.0);
    RNA_def_property_ui_text(prop, "Maximum Spring Extension", "Maximum extension before spring gets cut"); */
}

static void rna_def_cloth_collision_settings(BlenderRNA *brna)
{
    StructRNA *srna;
    PropertyRNA *prop;
    
    srna = RNA_def_struct(brna, "ClothCollisionSettings", NULL);
    RNA_def_struct_ui_text(srna, "Cloth Collision Settings",
                           "Cloth simulation settings for self collision and collision with other objects");
    RNA_def_struct_sdna(srna, "ClothCollSettings");
    RNA_def_struct_path_func(srna, "rna_ClothCollisionSettings_path");

    /* general collision */

    prop= RNA_def_property(srna, "use_collision", PROP_BOOLEAN, PROP_NONE);
    RNA_def_property_boolean_sdna(prop, NULL, "flags", CLOTH_COLLSETTINGS_FLAG_ENABLED);
    RNA_def_property_ui_text(prop, "Enable Collision", "Enable collisions with other objects");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    prop= RNA_def_property(srna, "repel_force", PROP_FLOAT, PROP_NONE);
    RNA_def_property_float_sdna(prop, NULL, "repel_force");
    RNA_def_property_range(prop, 0.0f, 20.0f);
    RNA_def_property_float_default(prop, 1.0f);
    RNA_def_property_ui_text(prop, "Repulsion Force", "Repulsion force to apply on cloth when close to colliding");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    prop= RNA_def_property(srna, "distance_repel", PROP_FLOAT, PROP_NONE);
    RNA_def_property_float_sdna(prop, NULL, "distance_repel");
    RNA_def_property_range(prop, 0.001f, 10.0f);
    RNA_def_property_float_default(prop, 0.005f);
    RNA_def_property_ui_text(prop, "Repulsion Distance",
                             "Maximum distance to apply repulsion force, must be greater than minimum distance");
    RNA_def_property_update(prop, 0, "rna_cloth_update");
    
    prop= RNA_def_property(srna, "distance_min", PROP_FLOAT, PROP_NONE);
    RNA_def_property_float_sdna(prop, NULL, "epsilon");
    RNA_def_property_range(prop, 0.001f, 1.0f);
    RNA_def_property_ui_text(prop, "Minimum Distance",
                             "Minimum distance between collision objects before collision response takes in");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    prop= RNA_def_property(srna, "friction", PROP_FLOAT, PROP_NONE);
    RNA_def_property_range(prop, 0.0f, 80.0f);
    RNA_def_property_ui_text(prop, "Friction", "Friction force if a collision happened (higher = less movement)");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    prop= RNA_def_property(srna, "collision_quality", PROP_INT, PROP_NONE);
    RNA_def_property_int_sdna(prop, NULL, "loop_count");
    RNA_def_property_range(prop, 1, 20);
    RNA_def_property_ui_text(prop, "Collision Quality",
                             "How many collision iterations should be done. (higher is better quality but slower)");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    /* self collision */

    prop= RNA_def_property(srna, "use_self_collision", PROP_BOOLEAN, PROP_NONE);
    RNA_def_property_boolean_sdna(prop, NULL, "flags", CLOTH_COLLSETTINGS_FLAG_SELF);
    RNA_def_property_ui_text(prop, "Enable Self Collision", "Enable self collisions");
    RNA_def_property_update(prop, 0, "rna_cloth_update");
    
    prop= RNA_def_property(srna, "self_distance_min", PROP_FLOAT, PROP_NONE);
    RNA_def_property_float_sdna(prop, NULL, "selfepsilon");
    RNA_def_property_range(prop, 0.5f, 1.0f);
    RNA_def_property_ui_text(prop, "Self Minimum Distance", "0.5 means no distance at all, 1.0 is maximum distance");
    RNA_def_property_update(prop, 0, "rna_cloth_update");
    
    prop= RNA_def_property(srna, "self_friction", PROP_FLOAT, PROP_NONE);
    RNA_def_property_range(prop, 0.0f, 80.0f);
    RNA_def_property_ui_text(prop, "Self Friction", "Friction/damping with self contact");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    prop= RNA_def_property(srna, "self_collision_quality", PROP_INT, PROP_NONE);
    RNA_def_property_int_sdna(prop, NULL, "self_loop_count");
    RNA_def_property_range(prop, 1, 10);
    RNA_def_property_ui_text(prop, "Self Collision Quality",
                             "How many self collision iterations should be done (higher is better quality but slower)");
    RNA_def_property_update(prop, 0, "rna_cloth_update");

    prop= RNA_def_property(srna, "group", PROP_POINTER, PROP_NONE);
    RNA_def_property_flag(prop, PROP_EDITABLE);
    RNA_def_property_ui_text(prop, "Collision Group", "Limit colliders to this Group");
    RNA_def_property_update(prop, 0, "rna_cloth_update");
}

void RNA_def_cloth(BlenderRNA *brna)
{
    rna_def_cloth_sim_settings(brna);
    rna_def_cloth_collision_settings(brna);
}

#endif