Campbell Barton
9f8070d047
- define array sizes for functions that take vectors. - quiet some -Wshadow warnings. - some copy/paste error in readfile.c made it set the same particle recalc flag twice.
123 lines
3.4 KiB
C++
123 lines
3.4 KiB
C++
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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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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*
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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. See the
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* GNU General Public License for more details.
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*
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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 the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2009 Blender Foundation.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): André Pinto.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file blender/render/intern/raytrace/rayobject_rtbuild.h
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* \ingroup render
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*/
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#ifndef __RAYOBJECT_RTBUILD_H__
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#define __RAYOBJECT_RTBUILD_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "rayobject.h"
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/*
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* Ray Tree Builder
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* this structs helps building any type of tree
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* it contains several methods to organiza/split nodes
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* allowing to create a given tree on the fly.
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*
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* Idea is that other trees BVH, BIH can use this code to
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* generate with simple calls, and then convert to the theirs
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* specific structure on the fly.
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*/
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#define RTBUILD_MAX_CHILDS 32
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typedef struct RTBuilder {
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struct Object {
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RayObject *obj;
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float cost;
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float bb[6];
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int selected;
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};
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/* list to all primitives added in this tree */
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struct {
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Object *begin, *end;
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int maxsize;
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} primitives;
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/* sorted list of rayobjects */
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struct Object **sorted_begin[3], **sorted_end[3];
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/* axis used (if any) on the split method */
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int split_axis;
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/* child partitions calculated during splitting */
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int child_offset[RTBUILD_MAX_CHILDS + 1];
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// int child_sorted_axis; /* -1 if not sorted */
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float bb[6];
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} RTBuilder;
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/* used during creation */
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RTBuilder *rtbuild_create(int size);
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void rtbuild_free(RTBuilder *b);
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void rtbuild_add(RTBuilder *b, RayObject *o);
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void rtbuild_done(RTBuilder *b, RayObjectControl *c);
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void rtbuild_merge_bb(RTBuilder *b, float min[3], float max[3]);
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int rtbuild_size(RTBuilder *b);
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RayObject *rtbuild_get_primitive(RTBuilder *b, int offset);
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/* used during tree reorganization */
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RTBuilder *rtbuild_get_child(RTBuilder *b, int child, RTBuilder *tmp);
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/* Calculates child partitions and returns number of efectively needed partitions */
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int rtbuild_get_largest_axis(RTBuilder *b);
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//Object partition
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int rtbuild_mean_split(RTBuilder *b, int nchilds, int axis);
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int rtbuild_mean_split_largest_axis(RTBuilder *b, int nchilds);
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int rtbuild_heuristic_object_split(RTBuilder *b, int nchilds);
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//Space partition
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int rtbuild_median_split(RTBuilder *b, float *separators, int nchilds, int axis);
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int rtbuild_median_split_largest_axis(RTBuilder *b, int nchilds);
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/* bb utils */
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float bb_area(const float min[3], const float max[3]);
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float bb_volume(const float min[3], const float max[3]);
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int bb_largest_axis(const float min[3], const float max[3]);
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int bb_fits_inside(const float outer_min[3], const float outer_max[3],
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const float inner_min[3], const float inner_max[3]);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __RAYOBJECT_RTBUILD_H__ */
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