2 ** License Applicability. Except to the extent portions of this file are
3 ** made subject to an alternative license as permitted in the SGI Free
4 ** Software License B, Version 1.1 (the "License"), the contents of this
5 ** file are subject only to the provisions of the License. You may not use
6 ** this file except in compliance with the License. You may obtain a copy
7 ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
8 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
10 ** http://oss.sgi.com/projects/FreeB
12 ** Note that, as provided in the License, the Software is distributed on an
13 ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
14 ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
15 ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
16 ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
18 ** Original Code. The Original Code is: OpenGL Sample Implementation,
19 ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
20 ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
21 ** Copyright in any portions created by third parties is as indicated
22 ** elsewhere herein. All Rights Reserved.
24 ** Additional Notice Provisions: The application programming interfaces
25 ** established by SGI in conjunction with the Original Code are The
26 ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
27 ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
28 ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
29 ** Window System(R) (Version 1.3), released October 19, 1998. This software
30 ** was created using the OpenGL(R) version 1.2.1 Sample Implementation
31 ** published by SGI, but has not been independently verified as being
32 ** compliant with the OpenGL(R) version 1.2.1 Specification.
34 ** $Date: 2001/11/29 16:16:55 $ $Revision: 1.2 $
37 ** $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/nurbtess/sampledLine.cc,v 1.2 2001/11/29 16:16:55 kschultz Exp $
42 #include <math.h> //for fabs()
43 #include "glimports.h"
45 #include "sampledLine.h"
47 void sampledLine::setPoint(Int i
, Real p
[2])
54 /*insert this single line in front of the oldList*/
55 sampledLine
* sampledLine::insert(sampledLine
*oldList
)
61 void sampledLine::deleteList()
63 sampledLine
*temp
, *tempNext
;
64 for(temp
= this; temp
!= NULL
; temp
= tempNext
)
66 tempNext
= temp
->next
;
72 /*space of points[][2] is allocated*/
73 sampledLine::sampledLine(Int n_points
)
76 points
= (Real2
*) malloc(sizeof(Real2
) * n_points
);
81 /*space of points[][2] is allocated and
84 sampledLine::sampledLine(Int n_points
, Real2 pts
[])
88 points
= (Real2
*) malloc(sizeof(Real2
) * n_points
);
90 for(i
=0; i
<npoints
; i
++) {
91 points
[i
][0] = pts
[i
][0];
92 points
[i
][1] = pts
[i
][1];
97 sampledLine::sampledLine(Real pt1
[2], Real pt2
[2])
100 points
= (Real2
*) malloc(sizeof(Real2
) * 2);
102 points
[0][0] = pt1
[0];
103 points
[0][1] = pt1
[1];
104 points
[1][0] = pt2
[0];
105 points
[1][1] = pt2
[1];
109 //needs tp call init to setup
110 sampledLine::sampledLine()
114 //warning: ONLY pointer is copies!!!
115 void sampledLine::init(Int n_points
, Real2
*pts
)
121 /*points[] is dealocated
123 sampledLine::~sampledLine()
128 void sampledLine::print()
131 printf("npoints=%i\n", npoints
);
133 for(i
=0; i
<npoints
; i
++){
134 printf("(%f,%f)\n", points
[i
][0], points
[i
][1]);
139 void sampledLine::tessellate(Real u_reso
, Real v_reso
)
144 nu
= 1+(Int
) (fabs((points
[npoints
-1][0] - points
[0][0])) * u_reso
);
145 nv
= 1+(Int
) (fabs((points
[npoints
-1][1] - points
[0][1])) * v_reso
);
152 //du dv could be negative
153 Real du
= (points
[npoints
-1][0] - points
[0][0])/n
;
154 Real dv
= (points
[npoints
-1][1] - points
[0][1])/n
;
155 Real2
*temp
= (Real2
*) malloc(sizeof(Real2
) * (n
+1));
159 for(i
=0, u
=points
[0][0], v
=points
[0][1]; i
<n
; i
++, u
+=du
, v
+=dv
)
164 temp
[n
][0] = points
[npoints
-1][0];
165 temp
[n
][1] = points
[npoints
-1][1];
174 void sampledLine::tessellateAll(Real u_reso
, Real v_reso
)
177 for(temp
= this; temp
!= NULL
; temp
= temp
->next
)
179 temp
->tessellate(u_reso
, v_reso
);