blender/extern/rangetree/range_tree.h
Campbell Barton 72921a1e43 RangeTree API rewrite
Rewrite the current range-tree API used by dyn-topo undo
to avoid inefficiencies from stdc++'s set use.

- every call to `take_any` (called for all verts & faces)
  removed and added to the set.
- further range adjustment also took 2x btree edits.

This patch inlines a btree which is modified in-place,
so common resizing operations don't need to perform a remove & insert.
Ranges are stored in a list so `take_any` can access the first item
without a btree lookup.

Since range-tree isn't a bottleneck in sculpting, this only gives minor speedups.
Measured approx ~15% overall faster calculation for sculpting,
although this number time doesn't include GPU updates and depends on how
much edits fragment the range-tree.
2016-10-26 23:33:41 +11:00

49 lines
1.9 KiB
C

/*
* Copyright (c) 2016, Campbell Barton.
*
* Licensed under the Apache License, Version 2.0 (the "Apache License")
* with the following modification; you may not use this file except in
* compliance with the Apache License and the following modification to it:
* Section 6. Trademarks. is deleted and replaced with:
*
* 6. Trademarks. This License does not grant permission to use the trade
* names, trademarks, service marks, or product names of the Licensor
* and its affiliates, except as required to comply with Section 4(c) of
* the License and to reproduce the content of the NOTICE file.
*
* You may obtain a copy of the Apache License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the Apache License with the above modification is
* distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the Apache License for the specific
* language governing permissions and limitations under the Apache License.
*/
#ifndef __RANGE_TREE_H__
#define __RANGE_TREE_H__
#ifdef __cplusplus
extern "C" {
#endif
typedef struct RangeTreeUInt RangeTreeUInt;
struct RangeTreeUInt *range_tree_uint_alloc(unsigned int min, unsigned int max);
void range_tree_uint_free(struct RangeTreeUInt *rt);
struct RangeTreeUInt *range_tree_uint_copy(const struct RangeTreeUInt *rt_src);
bool range_tree_uint_has(struct RangeTreeUInt *rt, const unsigned int value);
void range_tree_uint_take(struct RangeTreeUInt *rt, const unsigned int value);
bool range_tree_uint_retake(struct RangeTreeUInt *rt, const unsigned int value);
unsigned int range_tree_uint_take_any(struct RangeTreeUInt *rt);
void range_tree_uint_release(struct RangeTreeUInt *rt, const unsigned int value);
#ifdef __cplusplus
}
#endif
#endif /* __RANGE_TREE_H__ */