[GLU32]

[reactos.git] / reactos / dll / opengl / glu32 / src / libnurbs / internals / backend.h

diff --git a/reactos/dll/opengl/glu32/src/libnurbs/internals/backend.h b/reactos/dll/opengl/glu32/src/libnurbs/internals/backend.h
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+++ b/reactos/dll/opengl/glu32/src/libnurbs/internals/backend.h
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+/*
+ * 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
+ *
+ */
+
+#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_ */