| /* |
| * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008) |
| * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice including the dates of first publication and |
| * either this permission notice or a reference to |
| * http://oss.sgi.com/projects/FreeB/ |
| * shall be included in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF |
| * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| * |
| * Except as contained in this notice, the name of Silicon Graphics, Inc. |
| * shall not be used in advertising or otherwise to promote the sale, use or |
| * other dealings in this Software without prior written authorization from |
| * Silicon Graphics, Inc. |
| */ |
| |
| /* |
| * trimvertex.h |
| * |
| * $Date: 2012/03/29 17:22:17 $ $Revision: 1.1.1.1 $ |
| * $Header: /cvs/bao-parsec/pkgs/libs/mesa/src/src/glu/sgi/libnurbs/internals/trimvertex.h,v 1.1.1.1 2012/03/29 17:22:17 uid42307 Exp $ |
| */ |
| |
| #ifndef __glutrimvertex_h_ |
| #define __glutrimvertex_h_ |
| |
| #include "types.h" |
| |
| /*#define USE_OPTTT*/ |
| |
| class TrimVertex { /* a vertex on a trim curve */ |
| public: |
| REAL param[2]; /* parametric space coords */ |
| #ifdef USE_OPTTT |
| REAL cache_point[4]; //only when USE_OPTTT is on in slicer.c++ |
| REAL cache_normal[3]; |
| #endif |
| long nuid; |
| }; |
| |
| typedef class TrimVertex *TrimVertex_p; |
| |
| inline REAL |
| det3( TrimVertex *a, TrimVertex *b, TrimVertex *c ) |
| { |
| return a->param[0] * (b->param[1]-c->param[1]) + |
| b->param[0] * (c->param[1]-a->param[1]) + |
| c->param[0] * (a->param[1]-b->param[1]); |
| } |
| |
| #endif /* __glutrimvertex_h_ */ |
