2 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
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36 #ifndef __glubackend_h_
37 #define __glubackend_h_
39 #include "trimvertex.h"
40 #include "gridvertex.h"
41 #include "gridtrimvertex.h"
43 class BasicCurveEvaluator
;
44 class BasicSurfaceEvaluator
;
48 BasicCurveEvaluator
& curveEvaluator
;
49 BasicSurfaceEvaluator
& surfaceEvaluator
;
51 Backend( BasicCurveEvaluator
&c
, BasicSurfaceEvaluator
& e
)
52 : curveEvaluator(c
), surfaceEvaluator(e
) {}
54 /* surface backend routines */
55 void bgnsurf( int, int, long );
56 void patch( REAL
, REAL
, REAL
, REAL
);
57 void surfpts( long, REAL
*, long, long, int, int,
58 REAL
, REAL
, REAL
, REAL
);
59 void surfbbox( long, REAL
*, REAL
* );
60 void surfgrid( REAL
, REAL
, long, REAL
, REAL
, long );
61 void surfmesh( long, long, long, long );
62 void bgntmesh( const char * );
63 void endtmesh( void );
64 void swaptmesh( void );
65 void tmeshvert( GridTrimVertex
* );
66 void tmeshvert( TrimVertex
* );
67 void tmeshvert( GridVertex
* );
68 void tmeshvert( REAL u
, REAL v
);
69 void linevert( TrimVertex
* );
70 void linevert( GridVertex
* );
71 void bgnoutline( void );
72 void endoutline( void );
74 void triangle( TrimVertex
*, TrimVertex
*, TrimVertex
* );
80 void evalUStrip(int n_upper
, REAL v_upper
, REAL
* upper_val
,
81 int n_lower
, REAL v_lower
, REAL
* lower_val
83 void evalVStrip(int n_left
, REAL u_left
, REAL
* left_val
,
84 int n_right
, REAL v_right
, REAL
* right_val
86 void tmeshvertNOGE(TrimVertex
*t
);
87 void tmeshvertNOGE_BU(TrimVertex
*t
);
88 void tmeshvertNOGE_BV(TrimVertex
*t
);
89 void preEvaluateBU(REAL u
);
90 void preEvaluateBV(REAL v
);
93 /* curve backend routines */
95 void segment( REAL
, REAL
);
96 void curvpts( long, REAL
*, long, int, REAL
, REAL
);
97 void curvgrid( REAL
, REAL
, long );
98 void curvmesh( long, long );
100 void bgnline( void );
101 void endline( void );
102 void endcurv( void );
113 #endif /* __glubackend_h_ */