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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.
*
* The Original Code is Copyright (C) 2018 Blender Foundation.
* All rights reserved.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/depsgraph/intern/depsgraph_physics.cc
* \ingroup depsgraph
*
* Physics utilities for effectors and collision.
*/
#include "MEM_guardedalloc.h"
#include "BLI_compiler_compat.h"
#include "BLI_ghash.h"
extern "C" {
#include "BKE_effect.h"
} /* extern "C" */
#include "DNA_group_types.h"
#include "DEG_depsgraph_physics.h"
#include "depsgraph.h"
#include "depsgraph_intern.h"
/************************ Public API *************************/
ListBase *DEG_get_effector_relations(const Depsgraph *graph,
Collection *collection)
{
const DEG::Depsgraph *deg_graph = reinterpret_cast<const DEG::Depsgraph *>(graph);
if (deg_graph->effector_relations == NULL) {
return NULL;
}
return (ListBase*)BLI_ghash_lookup(deg_graph->effector_relations, collection);
}
/*********************** Internal API ************************/
namespace DEG
{
ListBase *deg_build_effector_relations(Depsgraph *graph,
Collection *collection)
{
if (graph->effector_relations == NULL) {
graph->effector_relations = BLI_ghash_ptr_new("Depsgraph effector relations hash");
}
ListBase *relations = reinterpret_cast<ListBase*>(BLI_ghash_lookup(graph->effector_relations, collection));
if (relations == NULL) {
::Depsgraph *depsgraph = reinterpret_cast<::Depsgraph*>(graph);
relations = BKE_effector_relations_create(depsgraph, graph->view_layer, collection);
BLI_ghash_insert(graph->effector_relations, collection, relations);
}
return relations;
}
static void free_effector_relations(void *value)
{
BKE_effector_relations_free(reinterpret_cast<ListBase*>(value));
}
void deg_clear_physics_relations(Depsgraph *graph)
{
if (graph->effector_relations) {
BLI_ghash_free(graph->effector_relations, NULL, free_effector_relations);
graph->effector_relations = NULL;
}
}
}
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