diff options
Diffstat (limited to 'source/blender/editors/physics/rigidbody_object.c')
-rw-r--r-- | source/blender/editors/physics/rigidbody_object.c | 622 |
1 files changed, 622 insertions, 0 deletions
diff --git a/source/blender/editors/physics/rigidbody_object.c b/source/blender/editors/physics/rigidbody_object.c new file mode 100644 index 00000000000..c61d4c33866 --- /dev/null +++ b/source/blender/editors/physics/rigidbody_object.c @@ -0,0 +1,622 @@ +/* + * ***** 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. + * + * The Original Code is Copyright (C) 2013 Blender Foundation + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): Joshua Leung, Sergej Reich + * + * ***** END GPL LICENSE BLOCK ***** + */ + +/** \file rigidbody_object.c + * \ingroup editor_physics + * \brief Rigid Body object editing operators + */ + +#include <stdlib.h> +#include <string.h> + +#include "MEM_guardedalloc.h" + +#include "DNA_group_types.h" +#include "DNA_object_types.h" +#include "DNA_mesh_types.h" +#include "DNA_rigidbody_types.h" +#include "DNA_scene_types.h" + +#include "BLI_blenlib.h" +#include "BLI_math.h" + +#include "BKE_context.h" +#include "BKE_depsgraph.h" +#include "BKE_group.h" +#include "BKE_object.h" +#include "BKE_report.h" +#include "BKE_rigidbody.h" + +#include "RNA_access.h" +#include "RNA_define.h" +#include "RNA_enum_types.h" + +#include "WM_api.h" +#include "WM_types.h" + +#include "ED_physics.h" +#include "ED_screen.h" + +#include "physics_intern.h" + +/* ********************************************** */ +/* Helper API's for RigidBody Objects Editing */ + +static int ED_operator_rigidbody_active_poll(bContext *C) +{ + if (ED_operator_object_active_editable(C)) { + Object *ob = CTX_data_active_object(C); + return (ob && ob->rigidbody_object); + } + else + return 0; +} + +static int ED_operator_rigidbody_add_poll(bContext *C) +{ + if (ED_operator_object_active_editable(C)) { + Object *ob = CTX_data_active_object(C); + return (ob && ob->type == OB_MESH); + } + else + return 0; +} + +/* ----------------- */ + +void ED_rigidbody_ob_add(wmOperator *op, Scene *scene, Object *ob, int type) +{ + /* check that object doesn't already belong to the current simulation */ + if (ob->rigidbody_object) { + BKE_reportf(op->reports, RPT_INFO, "Object '%s' already has a Rigid Body", ob->id.name + 2); + return; + } + if (ob->type != OB_MESH) { + BKE_report(op->reports, RPT_ERROR, "Can't add Rigid Body to non mesh object"); + return; + } + if (((Mesh *)ob->data)->totpoly == 0) { + BKE_report(op->reports, RPT_ERROR, "Can't create Rigid Body from mesh with no polygons"); + return; + } + + /* make rigidbody object settings */ + ob->rigidbody_object = BKE_rigidbody_create_object(scene, ob, type); + ob->rigidbody_object->flag |= RBO_FLAG_NEEDS_VALIDATE; +} + +void ED_rigidbody_ob_remove(Scene *scene, Object *ob) +{ + BKE_rigidbody_remove_object(scene, ob); + DAG_id_tag_update(&ob->id, OB_RECALC_OB); +} + +/* ********************************************** */ +/* Active Object Add/Remove Operators */ + +/* ************ Add Rigid Body ************** */ + +static int rigidbody_ob_add_exec(bContext *C, wmOperator *op) +{ + Scene *scene = CTX_data_scene(C); + Object *ob = (scene) ? OBACT : NULL; + int type = RNA_enum_get(op->ptr, "type"); + + /* apply to active object */ + ED_rigidbody_ob_add(op, scene, ob, type); + + /* send updates */ + DAG_ids_flush_update(CTX_data_main(C), 0); + + WM_event_add_notifier(C, NC_OBJECT | ND_TRANSFORM, NULL); + WM_event_add_notifier(C, NC_GROUP | NA_EDITED, NULL); + + /* done */ + return OPERATOR_FINISHED; +} + +void RIGIDBODY_OT_object_add(wmOperatorType *ot) +{ + /* identifiers */ + ot->idname = "RIGIDBODY_OT_object_add"; + ot->name = "Add Rigid Body"; + ot->description = "Add active object as Rigid Body"; + + /* callbacks */ + ot->exec = rigidbody_ob_add_exec; + ot->poll = ED_operator_rigidbody_add_poll; + + /* flags */ + ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO; + + /* properties */ + ot->prop = RNA_def_enum(ot->srna, "type", rigidbody_ob_type_items, RBO_TYPE_ACTIVE, "Rigid Body Type", ""); +} + +/* ************ Remove Rigid Body ************** */ + +static int rigidbody_ob_remove_exec(bContext *C, wmOperator *op) +{ + Scene *scene = CTX_data_scene(C); + Object *ob = (scene) ? OBACT : NULL; + + /* sanity checks */ + if (scene == NULL) + return OPERATOR_CANCELLED; + + /* apply to active object */ + if (ELEM(NULL, ob, ob->rigidbody_object)) { + BKE_report(op->reports, RPT_ERROR, "Object has no Rigid Body settings to remove"); + return OPERATOR_CANCELLED; + } + else + ED_rigidbody_ob_remove(scene, ob); + + /* send updates */ + DAG_ids_flush_update(CTX_data_main(C), 0); + + WM_event_add_notifier(C, NC_OBJECT | ND_TRANSFORM, NULL); + WM_event_add_notifier(C, NC_GROUP | NA_EDITED, NULL); + + /* done */ + return OPERATOR_FINISHED; +} + +void RIGIDBODY_OT_object_remove(wmOperatorType *ot) +{ + /* identifiers */ + ot->idname = "RIGIDBODY_OT_object_remove"; + ot->name = "Remove Rigid Body"; + ot->description = "Remove Rigid Body settings from Object"; + + /* callbacks */ + ot->exec = rigidbody_ob_remove_exec; + ot->poll = ED_operator_rigidbody_active_poll; + + /* flags */ + ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO; +} + +/* ********************************************** */ +/* Selected Object Add/Remove Operators */ + +/* ************ Add Rigid Bodies ************** */ + +static int rigidbody_obs_add_exec(bContext *C, wmOperator *op) +{ + Scene *scene = CTX_data_scene(C); + RigidBodyWorld *rbw = BKE_rigidbody_get_world(scene); + int type = RNA_enum_get(op->ptr, "type"); + + /* sanity check */ + if (scene == NULL) { + BKE_report(op->reports, RPT_ERROR, "No Scene to add Rigid Bodies to"); + return OPERATOR_CANCELLED; + } + /* Add rigid body world and group if they don't exist for convenience */ + if (rbw == NULL) { + rbw = BKE_rigidbody_create_world(scene); + BKE_rigidbody_validate_sim_world(scene, rbw, false); + scene->rigidbody_world = rbw; + } + if (rbw->group == NULL) { + rbw->group = add_group("RigidBodyWorld"); + } + /* create rigid body objects and add them to the world's group */ + CTX_DATA_BEGIN(C, Object *, ob, selected_objects) { + ED_rigidbody_ob_add(op, scene, ob, type); + add_to_group(rbw->group, ob, scene, NULL); + } + CTX_DATA_END; + + /* send updates */ + DAG_ids_flush_update(CTX_data_main(C), 0); + + WM_event_add_notifier(C, NC_OBJECT | ND_TRANSFORM, NULL); + WM_event_add_notifier(C, NC_GROUP | NA_EDITED, NULL); + + /* done */ + return OPERATOR_FINISHED; +} + +void RIGIDBODY_OT_objects_add(wmOperatorType *ot) +{ + /* identifiers */ + ot->idname = "RIGIDBODY_OT_objects_add"; + ot->name = "Add Rigid Bodies"; + ot->description = "Add selected objects as Rigid Bodies"; + + /* callbacks */ + ot->exec = rigidbody_obs_add_exec; + ot->poll = ED_operator_rigidbody_add_poll; + + /* flags */ + ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO; + + /* properties */ + ot->prop = RNA_def_enum(ot->srna, "type", rigidbody_ob_type_items, RBO_TYPE_ACTIVE, "Rigid Body Type", ""); +} + +/* ************ Remove Rigid Bodies ************** */ + +static int rigidbody_obs_remove_exec(bContext *C, wmOperator *UNUSED(op)) +{ + Scene *scene = CTX_data_scene(C); + RigidBodyWorld *rbw = BKE_rigidbody_get_world(scene); + + /* sanity checks */ + if (scene == NULL) + return OPERATOR_CANCELLED; + + /* apply this to all selected objects... */ + CTX_DATA_BEGIN(C, Object *, ob, selected_objects) + { + if (ob->rigidbody_object) { + ED_rigidbody_ob_remove(scene, ob); + if (rbw) + rem_from_group(rbw->group, ob, scene, NULL); + } + } + CTX_DATA_END; + + /* send updates */ + DAG_ids_flush_update(CTX_data_main(C), 0); + + WM_event_add_notifier(C, NC_OBJECT | ND_TRANSFORM, NULL); + WM_event_add_notifier(C, NC_GROUP | NA_EDITED, NULL); + + /* done */ + return OPERATOR_FINISHED; +} + +void RIGIDBODY_OT_objects_remove(wmOperatorType *ot) +{ + /* identifiers */ + ot->idname = "RIGIDBODY_OT_objects_remove"; + ot->name = "Remove Rigid Bodies"; + ot->description = "Remove selected objects from Rigid Body simulation"; + + /* callbacks */ + ot->exec = rigidbody_obs_remove_exec; + ot->poll = ED_operator_rigidbody_active_poll; + + /* flags */ + ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO; +} + +/* ********************************************** */ +/* Utility Operators */ + +/* ************ Change Collision Shapes ************** */ + +static int rigidbody_obs_shape_change_exec(bContext *C, wmOperator *op) +{ + Scene *scene = CTX_data_scene(C); + int shape = RNA_enum_get(op->ptr, "type"); + + /* sanity checks */ + if (scene == NULL) + return OPERATOR_CANCELLED; + + /* apply this to all selected objects... */ + CTX_DATA_BEGIN(C, Object *, ob, selected_objects) + { + if (ob->rigidbody_object) { + PointerRNA ptr; + + /* use RNA-system to change the property and perform all necessary changes */ + RNA_pointer_create(&ob->id, &RNA_RigidBodyObject, ob->rigidbody_object, &ptr); + RNA_enum_set(&ptr, "collision_shape", shape); + } + } + CTX_DATA_END; + + /* send updates */ + WM_event_add_notifier(C, NC_OBJECT | ND_TRANSFORM, NULL); // XXX: wrong notifiers for now, but these also do the job... + + /* done */ + return OPERATOR_FINISHED; +} + +void RIGIDBODY_OT_shape_change(wmOperatorType *ot) +{ + /* identifiers */ + ot->idname = "RIGIDBODY_OT_shape_change"; + ot->name = "Change Collision Shape"; + ot->description = "Change collision shapes for selected Rigid Body Objects"; + + /* callbacks */ + ot->invoke = WM_menu_invoke; + ot->exec = rigidbody_obs_shape_change_exec; + ot->poll = ED_operator_rigidbody_active_poll; + + /* flags */ + ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO; + + /* properties */ + ot->prop = RNA_def_enum(ot->srna, "type", rigidbody_ob_shape_items, RB_SHAPE_TRIMESH, "Rigid Body Shape", ""); +} + +/* ************ Calculate Mass ************** */ + +/* Entry in material density table */ +typedef struct rbMaterialDensityItem { + const char *name; /* Name of material */ + float density; /* Density (kg/m^3) */ +} rbMaterialDensityItem; + +/* Preset density values for materials (kg/m^3) + * Selected values obtained from: + * 1) http://www.jaredzone.info/2010/09/densities.html + * 2) http://www.avlandesign.com/density_construction.htm + * 3) http://www.avlandesign.com/density_metal.htm + */ +static rbMaterialDensityItem RB_MATERIAL_DENSITY_TABLE[] = { + {"Air", 1.0f}, /* not quite; adapted from 1.43 for oxygen for use as default */ + {"Acrylic", 1400.0f}, + {"Asphalt (Crushed)", 721.0f}, + {"Bark", 240.0f}, + {"Beans (Cocoa)", 593.0f}, + {"Beans (Soy)", 721.0f}, + {"Brick (Pressed)", 2400.0f}, + {"Brick (Common)", 2000.0f}, + {"Brick (Soft)", 1600.0f}, + {"Brass", 8216.0f}, + {"Bronze", 8860.0f}, + {"Carbon (Solid)", 2146.0f}, + {"Cardboard", 689.0f}, + {"Cast Iron", 7150.0f}, + //{"Cement", 1442.0f}, + {"Chalk (Solid)", 2499.0f}, + //{"Coffee (Fresh/Roast)", ~500}, + {"Concrete", 2320.0f}, + {"Charcoal", 208.0f}, + {"Cork", 240.0f}, + {"Copper", 8933.0f}, + {"Garbage", 481.0f}, + {"Glass (Broken)", 1940.0f}, + {"Glass (Solid)", 2190.0f}, + {"Gold", 19282.0f}, + {"Granite (Broken)", 1650.0f}, + {"Granite (Solid)", 2691.0f}, + {"Gravel", 2780.0f}, + {"Ice (Crushed)", 593.0f}, + {"Ice (Solid)", 919.0f}, + {"Iron", 7874.0f}, + {"Lead", 11342.0f}, + {"Limestone (Broken)", 1554.0f}, + {"Limestone (Solid)", 2611.0f}, + {"Marble (Broken)", 1570.0f}, + {"Marble (Solid)", 2563.0f}, + {"Paper", 1201.0f}, + {"Peanuts (Shelled)", 641.0f}, + {"Peanuts (Not Shelled)", 272.0f}, + {"Plaster", 849.0f}, + {"Plastic", 1200.0f}, + {"Polystyrene", 1050.0f}, + {"Rubber", 1522.0f}, + {"Silver", 10501.0f}, + {"Steel", 7860.0f}, + {"Stone", 2515.0f}, + {"Stone (Crushed)", 1602.0f}, + {"Timber", 610.0f} +}; +static const int NUM_RB_MATERIAL_PRESETS = sizeof(RB_MATERIAL_DENSITY_TABLE) / sizeof(rbMaterialDensityItem); + + +/* dynamically generate list of items + * - Although there is a runtime cost, this has a lower maintenance cost + * in the long run than other two-list solutions... + */ +static EnumPropertyItem *rigidbody_materials_itemf(bContext *UNUSED(C), PointerRNA *UNUSED(ptr), PropertyRNA *UNUSED(prop), int *free) +{ + EnumPropertyItem item_tmp = {0}; + EnumPropertyItem *item = NULL; + int totitem = 0; + int i = 0; + + /* add each preset to the list */ + for (i = 0; i < NUM_RB_MATERIAL_PRESETS; i++) { + rbMaterialDensityItem *preset = &RB_MATERIAL_DENSITY_TABLE[i]; + + item_tmp.identifier = item_tmp.name = preset->name; + item_tmp.value = i; + RNA_enum_item_add(&item, &totitem, &item_tmp); + } + + /* add special "custom" entry to the end of the list */ + { + item_tmp.identifier = item_tmp.name = "Custom"; + item_tmp.value = -1; + RNA_enum_item_add(&item, &totitem, &item_tmp); + } + + RNA_enum_item_end(&item, &totitem); + *free = 1; + + return item; +} + +/* ------------------------------------------ */ + +/* helper function to calculate volume of rigidbody object */ +// TODO: allow a parameter to specify method used to calculate this? +static float calc_rigidbody_ob_volume(Object *ob) +{ + RigidBodyOb *rbo = ob->rigidbody_object; + + float size[3] = {1.0f, 1.0f, 1.0f}; + float radius = 1.0f; + float height = 1.0f; + + float volume = 0.0f; + + /* if automatically determining dimensions, use the Object's boundbox + * - assume that all quadrics are standing upright on local z-axis + * - assume even distribution of mass around the Object's pivot + * (i.e. Object pivot is centralised in boundbox) + * - boundbox gives full width + */ + // XXX: all dimensions are auto-determined now... later can add stored settings for this + BKE_object_dimensions_get(ob, size); + + if (ELEM3(rbo->shape, RB_SHAPE_CAPSULE, RB_SHAPE_CYLINDER, RB_SHAPE_CONE)) { + /* take radius as largest x/y dimension, and height as z-dimension */ + radius = MAX2(size[0], size[1]) * 0.5f; + height = size[2]; + } + else if (rbo->shape == RB_SHAPE_SPHERE) { + /* take radius to the the largest dimension to try and encompass everything */ + radius = max_fff(size[0], size[1], size[2]) * 0.5f; + } + + /* calculate volume as appropriate */ + switch (rbo->shape) { + case RB_SHAPE_BOX: + volume = size[0] * size[1] * size[2]; + break; + + case RB_SHAPE_SPHERE: + volume = 4.0f / 3.0f * (float)M_PI * radius * radius * radius; + break; + + /* for now, assume that capsule is close enough to a cylinder... */ + case RB_SHAPE_CAPSULE: + case RB_SHAPE_CYLINDER: + volume = (float)M_PI * radius * radius * height; + break; + + case RB_SHAPE_CONE: + volume = (float)M_PI / 3.0f * radius * radius * height; + break; + + /* for now, all mesh shapes are just treated as boxes... + * NOTE: this may overestimate the volume, but other methods are overkill + */ + case RB_SHAPE_CONVEXH: + case RB_SHAPE_TRIMESH: + volume = size[0] * size[1] * size[2]; + break; + +#if 0 // XXX: not defined yet + case RB_SHAPE_COMPOUND: + volume = 0.0f; + break; +#endif + } + + /* return the volume calculated */ + return volume; +} + +/* ------------------------------------------ */ + +static int rigidbody_obs_calc_mass_exec(bContext *C, wmOperator *op) +{ + Scene *scene = CTX_data_scene(C); + int material = RNA_enum_get(op->ptr, "material"); + float density; + + /* sanity checks */ + if (scene == NULL) + return OPERATOR_CANCELLED; + + /* get density (kg/m^3) to apply */ + if (material >= 0) { + /* get density from table, and store in props for later repeating */ + if (material >= NUM_RB_MATERIAL_PRESETS) + material = 0; + + density = RB_MATERIAL_DENSITY_TABLE[material].density; + RNA_float_set(op->ptr, "density", density); + } + else { + /* custom - grab from whatever value is set */ + density = RNA_float_get(op->ptr, "density"); + } + + /* apply this to all selected objects (with rigidbodies)... */ + CTX_DATA_BEGIN(C, Object *, ob, selected_objects) + { + if (ob->rigidbody_object) { + PointerRNA ptr; + + float volume; /* m^3 */ + float mass; /* kg */ + + /* mass is calculated from the approximate volume of the object, + * and the density of the material we're simulating + */ + volume = calc_rigidbody_ob_volume(ob); + mass = volume * density; + + /* use RNA-system to change the property and perform all necessary changes */ + RNA_pointer_create(&ob->id, &RNA_RigidBodyObject, ob->rigidbody_object, &ptr); + RNA_float_set(&ptr, "mass", mass); + } + } + CTX_DATA_END; + + /* send updates */ + WM_event_add_notifier(C, NC_OBJECT | ND_TRANSFORM, NULL); // XXX: wrong notifiers for now, but these also do the job... + + /* done */ + return OPERATOR_FINISHED; +} + +void RIGIDBODY_OT_mass_calculate(wmOperatorType *ot) +{ + PropertyRNA *prop; + + /* identifiers */ + ot->idname = "RIGIDBODY_OT_mass_calculate"; + ot->name = "Calculate Mass"; + ot->description = "Automatically calculate mass values for Rigid Body Objects based on volume"; + + /* callbacks */ + ot->invoke = WM_menu_invoke; // XXX + ot->exec = rigidbody_obs_calc_mass_exec; + ot->poll = ED_operator_rigidbody_active_poll; + + /* flags */ + ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO; + + /* properties */ + ot->prop = prop = RNA_def_enum(ot->srna, "material", + DummyRNA_DEFAULT_items, 0, + "Material Preset", + "Type of material that objects are made of. " + "Determines material density"); + RNA_def_enum_funcs(prop, rigidbody_materials_itemf); + + RNA_def_float(ot->srna, "density", 1.0, FLT_MIN, FLT_MAX, + "Density", + "Custom density value (kg/m^3) to use instead of material preset", + 1.0f, 2500.0f); +} + +/* ********************************************** */ |