forked from bartvdbraak/blender
109 lines
1.8 KiB
C++
109 lines
1.8 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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* Contributor(s): Tao Ju
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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#ifndef __QUEUE_H__
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#define __QUEUE_H__
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struct gridQueueEle {
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int x, y, z;
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UCHAR dir;
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gridQueueEle *next;
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};
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class GridQueue
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{
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gridQueueEle *head;
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gridQueueEle *tail;
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int numEles;
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public:
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GridQueue( )
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{
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head = NULL;
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tail = NULL;
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numEles = 0;
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}
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gridQueueEle *getHead( )
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{
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return head;
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}
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int getNumElements( )
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{
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return numEles;
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}
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void pushQueue(int st[3], int dir)
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{
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gridQueueEle *ele = new gridQueueEle;
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ele->x = st[0];
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ele->y = st[1];
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ele->z = st[2];
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ele->dir = (UCHAR) dir;
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ele->next = NULL;
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if (head == NULL)
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{
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head = ele;
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}
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else {
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tail->next = ele;
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}
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tail = ele;
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numEles++;
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}
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int popQueue(int st[3], int& dir)
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{
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if (head == NULL)
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{
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return 0;
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}
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st[0] = head->x;
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st[1] = head->y;
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st[2] = head->z;
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dir = (int) (head->dir);
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gridQueueEle *temp = head;
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head = head->next;
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delete temp;
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if (head == NULL)
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{
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tail = NULL;
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}
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numEles--;
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return 1;
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}
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#ifdef WITH_CXX_GUARDEDALLOC
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MEM_CXX_CLASS_ALLOC_FUNCS("DUALCON:GridQueue")
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#endif
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};
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#endif /* __QUEUE_H__ */
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