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.
40 #include <math.h> //for fabs()
41 #include "glimports.h"
43 #include "sampledLine.h"
45 void sampledLine::setPoint(Int i, Real p[2])
52 /*insert this single line in front of the oldList*/
53 sampledLine* sampledLine::insert(sampledLine *oldList)
59 void sampledLine::deleteList()
61 sampledLine *temp, *tempNext;
62 for(temp = this; temp != NULL; temp = tempNext)
64 tempNext = temp->next;
70 /*space of points[][2] is allocated*/
71 sampledLine::sampledLine(Int n_points)
74 points = (Real2*) malloc(sizeof(Real2) * n_points);
79 /*space of points[][2] is allocated and
82 sampledLine::sampledLine(Int n_points, Real2 pts[])
86 points = (Real2*) malloc(sizeof(Real2) * n_points);
88 for(i=0; i<npoints; i++) {
89 points[i][0] = pts[i][0];
90 points[i][1] = pts[i][1];
95 sampledLine::sampledLine(Real pt1[2], Real pt2[2])
98 points = (Real2*) malloc(sizeof(Real2) * 2);
100 points[0][0] = pt1[0];
101 points[0][1] = pt1[1];
102 points[1][0] = pt2[0];
103 points[1][1] = pt2[1];
107 //needs tp call init to setup
108 sampledLine::sampledLine()
115 //warning: ONLY pointer is copies!!!
116 void sampledLine::init(Int n_points, Real2 *pts)
122 /*points[] is dealocated
124 sampledLine::~sampledLine()
129 void sampledLine::print()
132 printf("npoints=%i\n", npoints);
134 for(i=0; i<npoints; i++){
135 printf("(%f,%f)\n", points[i][0], points[i][1]);
140 void sampledLine::tessellate(Real u_reso, Real v_reso)
145 nu = 1+(Int) (fabs((points[npoints-1][0] - points[0][0])) * u_reso);
146 nv = 1+(Int) (fabs((points[npoints-1][1] - points[0][1])) * v_reso);
153 //du dv could be negative
154 Real du = (points[npoints-1][0] - points[0][0])/n;
155 Real dv = (points[npoints-1][1] - points[0][1])/n;
156 Real2 *temp = (Real2*) malloc(sizeof(Real2) * (n+1));
160 for(i=0, u=points[0][0], v=points[0][1]; i<n; i++, u+=du, v+=dv)
165 temp[n][0] = points[npoints-1][0];
166 temp[n][1] = points[npoints-1][1];
175 void sampledLine::tessellateAll(Real u_reso, Real v_reso)
178 for(temp = this; temp != NULL; temp = temp->next)
180 temp->tessellate(u_reso, v_reso);