GSVertexList.h
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上传日期:2015-12-05
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- /*
- * Copyright (C) 2003-2005 Gabest
- * http://www.gabest.org
- *
- * 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, 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 GNU Make; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- * http://www.gnu.org/copyleft/gpl.html
- *
- */
- #pragma once
- template <class VERTEX> class GSVertexList
- {
- VERTEX* m_v;
- int m_head, m_tail, m_count;
- public:
- GSVertexList()
- {
- m_v = (VERTEX*)_aligned_malloc(sizeof(VERTEX)*4, 16);
- RemoveAll();
- }
- ~GSVertexList()
- {
- _aligned_free(m_v);
- }
- void RemoveAll()
- {
- m_head = m_tail = m_count = 0;
- }
- VERTEX& AddTail()
- {
- ASSERT(m_count < 4);
- VERTEX& v = m_v[m_tail];
- m_tail = (m_tail+1)&3;
- m_count++;
- return v;
- }
- void AddTail(VERTEX& v)
- {
- ASSERT(m_count < 4);
- m_v[m_tail] = v;
- m_tail = (m_tail+1)&3;
- m_count++;
- }
- void RemoveAt(int i, VERTEX& v)
- {
- GetAt(i, v);
- i = (m_head+i)&3;
- if(i == m_head) m_head = (m_head+1)&3;
- else for(m_tail = (m_tail+4-1)&3; i != m_tail; i = (i+1)&3) m_v[i] = m_v[(i+1)&3];
- m_count--;
- }
- void GetAt(int i, VERTEX& v)
- {
- ASSERT(m_count > 0);
- v = m_v[(m_head+i)&3];
- }
- int GetCount()
- {
- return m_count;
- }
- };