1/*
2 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
3 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice including the dates of first publication and
13 * either this permission notice or a reference to
14 * http://oss.sgi.com/projects/FreeB/
15 * shall be included in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
21 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
22 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 *
25 * Except as contained in this notice, the name of Silicon Graphics, Inc.
26 * shall not be used in advertising or otherwise to promote the sale, use or
27 * other dealings in this Software without prior written authorization from
28 * Silicon Graphics, Inc.
29 */
30
31/*
32 * slicer.h
33 *
34 */
35
36#ifndef __gluslicer_h_
37#define __gluslicer_h_
38
39#include "trimregion.h"
40#include "mesher.h"
41#include "coveandtiler.h"
42#include "primitiveStream.h"
43#include "rectBlock.h"
44
45class Backend;
46class Arc;
47class TrimVertex;
48
49class Slicer : public CoveAndTiler, public Mesher {
50public:
51    			Slicer( Backend & );
52			~Slicer( void );
53    void		slice( Arc_ptr );
54    void		slice_old( Arc_ptr);
55    void		slice_new( Arc_ptr );
56    void                evalStream(primStream* );
57    void                evalRBArray(rectBlockArray* rbArray, gridWrap* grid);
58
59    void		outline( Arc_ptr );
60    void		setstriptessellation( REAL, REAL );
61    void		setisolines( int );
62
63    void                set_ulinear(int ulinear_flag)
64      {
65	ulinear = ulinear_flag;
66      }
67    void                set_vlinear(int vlinear_flag)
68      {
69	vlinear = vlinear_flag;
70      }
71private:
72    Backend&		backend;
73    REAL		oneOverDu;
74    REAL		du, dv;
75    int			isolines;
76
77    void		outline( void );
78    void		initGridlines( void );
79    void		advanceGridlines( long );
80
81    int                ulinear; //indicate whether uorder is 2 or not
82    int                vlinear; //indicate whether vorder is 2 or not
83};
84#endif /* __gluslicer_h_ */
85