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6ec8e29429
The root transform of each hierarchy can be extracted from the first transform of the list in the hierarchy, so no information is lost. The main reason for the change is I discovered (obvious in hindsight) that deleting root transforms was O(n) due to keeping them in an array, thus the use of a linked list (I don't expect a hierarchy to be in more than one such list), and I didn't want the transforms to be in a linked list.
79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
/*
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hierarch.h
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Hierarchy management
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Copyright (C) 2021 Bill Currie <bill@taniwha.org>
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Author: Bill Currie <bill@taniwha.org>
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Date: 2021/02/26
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifndef __QF_scene_hierarch_h
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#define __QF_scene_hierarch_h
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#include "QF/darray.h"
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#include "QF/qtypes.h"
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#include "QF/scene/types.h"
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#include "QF/simd/vec4f.h"
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#include "QF/simd/mat4f.h"
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/** \defgroup entity Hierarchy management
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\ingroup utils
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*/
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///@{
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#define null_transform (~0u)
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typedef struct hierarchy_s {
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struct hierarchy_s *next;
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struct hierarchy_s **prev;
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struct scene_s *scene;
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xformset_t transform;
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entityset_t entity;
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uint32set_t childCount;
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uint32set_t childIndex;
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uint32set_t parentIndex;
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stringset_t name;
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uint32set_t tag;
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byteset_t modified;
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mat4fset_t localMatrix;
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mat4fset_t localInverse;
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mat4fset_t worldMatrix;
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mat4fset_t worldInverse;
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vec4fset_t localRotation;
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vec4fset_t localScale;
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vec4fset_t worldRotation;
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vec4fset_t worldScale;
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} hierarchy_t;
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hierarchy_t *Hierarchy_New (struct scene_s *scene, int createRoot);
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hierarchy_t *Hierarchy_Copy (hierarchy_t *src);
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void Hierarchy_Delete (hierarchy_t *hierarchy);
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void Hierarchy_UpdateMatrices (hierarchy_t *hierarchy);
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uint32_t Hierarchy_InsertHierarchy (hierarchy_t *dst, const hierarchy_t *src,
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uint32_t dstParent, uint32_t srcRoot);
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void Hierarchy_RemoveHierarchy (hierarchy_t *hierarchy, uint32_t index);
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///@}
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#endif//__QF_scene_hierarch_h
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