mirror of
https://github.com/id-Software/DOOM-3-BFG.git
synced 2026-03-20 09:00:25 +01:00
Initial commit
This commit is contained in:
Brian Harris
270
neo/idlib/containers/VectorSet.h
Normal file
270
neo/idlib/containers/VectorSet.h
Normal file
@@ -0,0 +1,270 @@
|
||||
/*
|
||||
===========================================================================
|
||||
|
||||
Doom 3 BFG Edition GPL Source Code
|
||||
Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company.
|
||||
|
||||
This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").
|
||||
|
||||
Doom 3 BFG Edition Source Code 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 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
Doom 3 BFG Edition Source Code 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 Doom 3 BFG Edition Source Code. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code. If not, please request a copy in writing from id Software at the address below.
|
||||
|
||||
If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
|
||||
|
||||
===========================================================================
|
||||
*/
|
||||
|
||||
#ifndef __VECTORSET_H__
|
||||
#define __VECTORSET_H__
|
||||
|
||||
/*
|
||||
===============================================================================
|
||||
|
||||
Vector Set
|
||||
|
||||
Creates a set of vectors without duplicates.
|
||||
|
||||
===============================================================================
|
||||
*/
|
||||
|
||||
template< class type, int dimension >
|
||||
class idVectorSet : public idList<type> {
|
||||
public:
|
||||
idVectorSet();
|
||||
idVectorSet( const type &mins, const type &maxs, const int boxHashSize, const int initialSize );
|
||||
|
||||
// returns total size of allocated memory
|
||||
size_t Allocated() const { return idList<type>::Allocated() + hash.Allocated(); }
|
||||
// returns total size of allocated memory including size of type
|
||||
size_t Size() const { return sizeof( *this ) + Allocated(); }
|
||||
|
||||
void Init( const type &mins, const type &maxs, const int boxHashSize, const int initialSize );
|
||||
void ResizeIndex( const int newSize );
|
||||
void Clear();
|
||||
|
||||
int FindVector( const type &v, const float epsilon );
|
||||
|
||||
private:
|
||||
idHashIndex hash;
|
||||
type mins;
|
||||
type maxs;
|
||||
int boxHashSize;
|
||||
float boxInvSize[dimension];
|
||||
float boxHalfSize[dimension];
|
||||
};
|
||||
|
||||
template< class type, int dimension >
|
||||
ID_INLINE idVectorSet<type,dimension>::idVectorSet() {
|
||||
hash.Clear( idMath::IPow( boxHashSize, dimension ), 128 );
|
||||
boxHashSize = 16;
|
||||
memset( boxInvSize, 0, dimension * sizeof( boxInvSize[0] ) );
|
||||
memset( boxHalfSize, 0, dimension * sizeof( boxHalfSize[0] ) );
|
||||
}
|
||||
|
||||
template< class type, int dimension >
|
||||
ID_INLINE idVectorSet<type,dimension>::idVectorSet( const type &mins, const type &maxs, const int boxHashSize, const int initialSize ) {
|
||||
Init( mins, maxs, boxHashSize, initialSize );
|
||||
}
|
||||
|
||||
template< class type, int dimension >
|
||||
ID_INLINE void idVectorSet<type,dimension>::Init( const type &mins, const type &maxs, const int boxHashSize, const int initialSize ) {
|
||||
int i;
|
||||
float boxSize;
|
||||
|
||||
idList<type>::AssureSize( initialSize );
|
||||
idList<type>::SetNum( 0, false );
|
||||
|
||||
hash.Clear( idMath::IPow( boxHashSize, dimension ), initialSize );
|
||||
|
||||
this->mins = mins;
|
||||
this->maxs = maxs;
|
||||
this->boxHashSize = boxHashSize;
|
||||
|
||||
for ( i = 0; i < dimension; i++ ) {
|
||||
boxSize = ( maxs[i] - mins[i] ) / (float) boxHashSize;
|
||||
boxInvSize[i] = 1.0f / boxSize;
|
||||
boxHalfSize[i] = boxSize * 0.5f;
|
||||
}
|
||||
}
|
||||
|
||||
template< class type, int dimension >
|
||||
ID_INLINE void idVectorSet<type,dimension>::ResizeIndex( const int newSize ) {
|
||||
idList<type>::Resize( newSize );
|
||||
hash.ResizeIndex( newSize );
|
||||
}
|
||||
|
||||
template< class type, int dimension >
|
||||
ID_INLINE void idVectorSet<type,dimension>::Clear() {
|
||||
idList<type>::Clear();
|
||||
hash.Clear();
|
||||
}
|
||||
|
||||
template< class type, int dimension >
|
||||
ID_INLINE int idVectorSet<type,dimension>::FindVector( const type &v, const float epsilon ) {
|
||||
int i, j, k, hashKey, partialHashKey[dimension];
|
||||
|
||||
for ( i = 0; i < dimension; i++ ) {
|
||||
assert( epsilon <= boxHalfSize[i] );
|
||||
partialHashKey[i] = (int) ( ( v[i] - mins[i] - boxHalfSize[i] ) * boxInvSize[i] );
|
||||
}
|
||||
|
||||
for ( i = 0; i < ( 1 << dimension ); i++ ) {
|
||||
|
||||
hashKey = 0;
|
||||
for ( j = 0; j < dimension; j++ ) {
|
||||
hashKey *= boxHashSize;
|
||||
hashKey += partialHashKey[j] + ( ( i >> j ) & 1 );
|
||||
}
|
||||
|
||||
for ( j = hash.First( hashKey ); j >= 0; j = hash.Next( j ) ) {
|
||||
const type &lv = (*this)[j];
|
||||
for ( k = 0; k < dimension; k++ ) {
|
||||
if ( idMath::Fabs( lv[k] - v[k] ) > epsilon ) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
if ( k >= dimension ) {
|
||||
return j;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
hashKey = 0;
|
||||
for ( i = 0; i < dimension; i++ ) {
|
||||
hashKey *= boxHashSize;
|
||||
hashKey += (int) ( ( v[i] - mins[i] ) * boxInvSize[i] );
|
||||
}
|
||||
|
||||
hash.Add( hashKey, idList<type>::Num() );
|
||||
Append( v );
|
||||
return idList<type>::Num()-1;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
===============================================================================
|
||||
|
||||
Vector Subset
|
||||
|
||||
Creates a subset without duplicates from an existing list with vectors.
|
||||
|
||||
===============================================================================
|
||||
*/
|
||||
|
||||
template< class type, int dimension >
|
||||
class idVectorSubset {
|
||||
public:
|
||||
idVectorSubset();
|
||||
idVectorSubset( const type &mins, const type &maxs, const int boxHashSize, const int initialSize );
|
||||
|
||||
// returns total size of allocated memory
|
||||
size_t Allocated() const { return idList<type>::Allocated() + hash.Allocated(); }
|
||||
// returns total size of allocated memory including size of type
|
||||
size_t Size() const { return sizeof( *this ) + Allocated(); }
|
||||
|
||||
void Init( const type &mins, const type &maxs, const int boxHashSize, const int initialSize );
|
||||
void Clear();
|
||||
|
||||
// returns either vectorNum or an index to a previously found vector
|
||||
int FindVector( const type *vectorList, const int vectorNum, const float epsilon );
|
||||
|
||||
private:
|
||||
idHashIndex hash;
|
||||
type mins;
|
||||
type maxs;
|
||||
int boxHashSize;
|
||||
float boxInvSize[dimension];
|
||||
float boxHalfSize[dimension];
|
||||
};
|
||||
|
||||
template< class type, int dimension >
|
||||
ID_INLINE idVectorSubset<type,dimension>::idVectorSubset() {
|
||||
hash.Clear( idMath::IPow( boxHashSize, dimension ), 128 );
|
||||
boxHashSize = 16;
|
||||
memset( boxInvSize, 0, dimension * sizeof( boxInvSize[0] ) );
|
||||
memset( boxHalfSize, 0, dimension * sizeof( boxHalfSize[0] ) );
|
||||
}
|
||||
|
||||
template< class type, int dimension >
|
||||
ID_INLINE idVectorSubset<type,dimension>::idVectorSubset( const type &mins, const type &maxs, const int boxHashSize, const int initialSize ) {
|
||||
Init( mins, maxs, boxHashSize, initialSize );
|
||||
}
|
||||
|
||||
template< class type, int dimension >
|
||||
ID_INLINE void idVectorSubset<type,dimension>::Init( const type &mins, const type &maxs, const int boxHashSize, const int initialSize ) {
|
||||
int i;
|
||||
float boxSize;
|
||||
|
||||
hash.Clear( idMath::IPow( boxHashSize, dimension ), initialSize );
|
||||
|
||||
this->mins = mins;
|
||||
this->maxs = maxs;
|
||||
this->boxHashSize = boxHashSize;
|
||||
|
||||
for ( i = 0; i < dimension; i++ ) {
|
||||
boxSize = ( maxs[i] - mins[i] ) / (float) boxHashSize;
|
||||
boxInvSize[i] = 1.0f / boxSize;
|
||||
boxHalfSize[i] = boxSize * 0.5f;
|
||||
}
|
||||
}
|
||||
|
||||
template< class type, int dimension >
|
||||
ID_INLINE void idVectorSubset<type,dimension>::Clear() {
|
||||
idList<type>::Clear();
|
||||
hash.Clear();
|
||||
}
|
||||
|
||||
template< class type, int dimension >
|
||||
ID_INLINE int idVectorSubset<type,dimension>::FindVector( const type *vectorList, const int vectorNum, const float epsilon ) {
|
||||
int i, j, k, hashKey, partialHashKey[dimension];
|
||||
const type &v = vectorList[vectorNum];
|
||||
|
||||
for ( i = 0; i < dimension; i++ ) {
|
||||
assert( epsilon <= boxHalfSize[i] );
|
||||
partialHashKey[i] = (int) ( ( v[i] - mins[i] - boxHalfSize[i] ) * boxInvSize[i] );
|
||||
}
|
||||
|
||||
for ( i = 0; i < ( 1 << dimension ); i++ ) {
|
||||
|
||||
hashKey = 0;
|
||||
for ( j = 0; j < dimension; j++ ) {
|
||||
hashKey *= boxHashSize;
|
||||
hashKey += partialHashKey[j] + ( ( i >> j ) & 1 );
|
||||
}
|
||||
|
||||
for ( j = hash.First( hashKey ); j >= 0; j = hash.Next( j ) ) {
|
||||
const type &lv = vectorList[j];
|
||||
for ( k = 0; k < dimension; k++ ) {
|
||||
if ( idMath::Fabs( lv[k] - v[k] ) > epsilon ) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
if ( k >= dimension ) {
|
||||
return j;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
hashKey = 0;
|
||||
for ( i = 0; i < dimension; i++ ) {
|
||||
hashKey *= boxHashSize;
|
||||
hashKey += (int) ( ( v[i] - mins[i] ) * boxInvSize[i] );
|
||||
}
|
||||
|
||||
hash.Add( hashKey, vectorNum );
|
||||
return vectorNum;
|
||||
}
|
||||
|
||||
#endif /* !__VECTORSET_H__ */
|
||||
Reference in New Issue
Block a user