| /* |
| * 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. |
| */ |
| |
| /* |
| * backend.h |
| * |
| * $Date: 2012/03/29 17:22:18 $ $Revision: 1.1.1.1 $ |
| * $Header: /cvs/bao-parsec/pkgs/libs/mesa/src/src/glu/sgi/libnurbs/internals/backend.h,v 1.1.1.1 2012/03/29 17:22:18 uid42307 Exp $ |
| */ |
| |
| #ifndef __glubackend_h_ |
| #define __glubackend_h_ |
| |
| #include "trimvertex.h" |
| #include "gridvertex.h" |
| #include "gridtrimvertex.h" |
| |
| class BasicCurveEvaluator; |
| class BasicSurfaceEvaluator; |
| |
| class Backend { |
| private: |
| BasicCurveEvaluator& curveEvaluator; |
| BasicSurfaceEvaluator& surfaceEvaluator; |
| public: |
| Backend( BasicCurveEvaluator &c, BasicSurfaceEvaluator& e ) |
| : curveEvaluator(c), surfaceEvaluator(e) {} |
| |
| /* surface backend routines */ |
| void bgnsurf( int, int, long ); |
| void patch( REAL, REAL, REAL, REAL ); |
| void surfpts( long, REAL *, long, long, int, int, |
| REAL, REAL, REAL, REAL ); |
| void surfbbox( long, REAL *, REAL * ); |
| void surfgrid( REAL, REAL, long, REAL, REAL, long ); |
| void surfmesh( long, long, long, long ); |
| void bgntmesh( const char * ); |
| void endtmesh( void ); |
| void swaptmesh( void ); |
| void tmeshvert( GridTrimVertex * ); |
| void tmeshvert( TrimVertex * ); |
| void tmeshvert( GridVertex * ); |
| void tmeshvert( REAL u, REAL v ); |
| void linevert( TrimVertex * ); |
| void linevert( GridVertex * ); |
| void bgnoutline( void ); |
| void endoutline( void ); |
| void endsurf( void ); |
| void triangle( TrimVertex*, TrimVertex*, TrimVertex* ); |
| |
| void bgntfan(); |
| void endtfan(); |
| void bgnqstrip(); |
| void endqstrip(); |
| void evalUStrip(int n_upper, REAL v_upper, REAL* upper_val, |
| int n_lower, REAL v_lower, REAL* lower_val |
| ); |
| void evalVStrip(int n_left, REAL u_left, REAL* left_val, |
| int n_right, REAL v_right, REAL* right_val |
| ); |
| void tmeshvertNOGE(TrimVertex *t); |
| void tmeshvertNOGE_BU(TrimVertex *t); |
| void tmeshvertNOGE_BV(TrimVertex *t); |
| void preEvaluateBU(REAL u); |
| void preEvaluateBV(REAL v); |
| |
| |
| /* curve backend routines */ |
| void bgncurv( void ); |
| void segment( REAL, REAL ); |
| void curvpts( long, REAL *, long, int, REAL, REAL ); |
| void curvgrid( REAL, REAL, long ); |
| void curvmesh( long, long ); |
| void curvpt( REAL ); |
| void bgnline( void ); |
| void endline( void ); |
| void endcurv( void ); |
| private: |
| #ifndef NOWIREFRAME |
| int wireframetris; |
| int wireframequads; |
| int npts; |
| REAL mesh[3][4]; |
| int meshindex; |
| #endif |
| }; |
| |
| #endif /* __glubackend_h_ */ |