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Diffstat (limited to 'src/glu/sgi/libnurbs/internals/trimvertpool.cc')
| -rw-r--r-- | src/glu/sgi/libnurbs/internals/trimvertpool.cc | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/src/glu/sgi/libnurbs/internals/trimvertpool.cc b/src/glu/sgi/libnurbs/internals/trimvertpool.cc new file mode 100644 index 0000000000..26761b9148 --- /dev/null +++ b/src/glu/sgi/libnurbs/internals/trimvertpool.cc @@ -0,0 +1,121 @@ +/* +** License Applicability. Except to the extent portions of this file are +** made subject to an alternative license as permitted in the SGI Free +** Software License B, Version 1.1 (the "License"), the contents of this +** file are subject only to the provisions of the License. You may not use +** this file except in compliance with the License. You may obtain a copy +** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600 +** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at: +** +** http://oss.sgi.com/projects/FreeB +** +** Note that, as provided in the License, the Software is distributed on an +** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS +** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND +** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A +** PARTICULAR PURPOSE, AND NON-INFRINGEMENT. +** +** Original Code. The Original Code is: OpenGL Sample Implementation, +** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics, +** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc. +** Copyright in any portions created by third parties is as indicated +** elsewhere herein. All Rights Reserved. +** +** Additional Notice Provisions: The application programming interfaces +** established by SGI in conjunction with the Original Code are The +** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released +** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version +** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X +** Window System(R) (Version 1.3), released October 19, 1998. This software +** was created using the OpenGL(R) version 1.2.1 Sample Implementation +** published by SGI, but has not been independently verified as being +** compliant with the OpenGL(R) version 1.2.1 Specification. +*/ + +/* + * trimvertexpool.c++ + * + * $Date: 2001/03/17 00:25:41 $ $Revision: 1.1 $ + * $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/internals/trimvertpool.cc,v 1.1 2001/03/17 00:25:41 brianp Exp $ + */ + +#include "glimports.h" +#include "myassert.h" +#include "mystdio.h" +#include "mystring.h" +#include "trimvertex.h" +#include "trimvertpool.h" +#include "bufpool.h" + +/*---------------------------------------------------------------------------- + * TrimVertexPool::TrimVertexPool + *---------------------------------------------------------------------------- + */ +TrimVertexPool::TrimVertexPool( void ) + : pool( sizeof(TrimVertex)*3, 32, "Threevertspool" ) +{ + // initialize array of pointers to vertex lists + nextvlistslot = 0; + vlistsize = INIT_VERTLISTSIZE; + vlist = new TrimVertex_p[vlistsize]; +} + +/*---------------------------------------------------------------------------- + * TrimVertexPool::~TrimVertexPool + *---------------------------------------------------------------------------- + */ +TrimVertexPool::~TrimVertexPool( void ) +{ + // free all arrays of TrimVertices vertices + while( nextvlistslot ) { + delete vlist[--nextvlistslot]; + } + + // reallocate space for array of pointers to vertex lists + if( vlist ) delete[] vlist; +} + +/*---------------------------------------------------------------------------- + * TrimVertexPool::clear + *---------------------------------------------------------------------------- + */ +void +TrimVertexPool::clear( void ) +{ + // reinitialize pool of 3 vertex arrays + pool.clear(); + + // free all arrays of TrimVertices vertices + while( nextvlistslot ) { + delete vlist[--nextvlistslot]; + vlist[nextvlistslot] = 0; + } + + // reallocate space for array of pointers to vertex lists + if( vlist ) delete[] vlist; + vlist = new TrimVertex_p[vlistsize]; +} + + +/*---------------------------------------------------------------------------- + * TrimVertexPool::get - allocate a vertex list + *---------------------------------------------------------------------------- + */ +TrimVertex * +TrimVertexPool::get( int n ) +{ + TrimVertex *v; + if( n == 3 ) { + v = (TrimVertex *) pool.new_buffer(); + } else { + if( nextvlistslot == vlistsize ) { + vlistsize *= 2; + TrimVertex_p *nvlist = new TrimVertex_p[vlistsize]; + memcpy( nvlist, vlist, nextvlistslot * sizeof(TrimVertex_p) ); + if( vlist ) delete[] vlist; + vlist = nvlist; + } + v = vlist[nextvlistslot++] = new TrimVertex[n]; + } + return v; +} |