1/*
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:
9**
10** http://oss.sgi.com/projects/FreeB
11**
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.
17**
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.
23**
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.
33**
34*/
35/*
36*/
37
38#include "gluos.h"
39#include <stdlib.h>
40#include <stdio.h>
41#include "glimports.h"
42#include "zlassert.h"
43#include <GL/gl.h>
44
45#include "rectBlock.h"
46
47rectBlock::rectBlock(gridBoundaryChain* left, gridBoundaryChain* right, Int beginVline, Int endVline)
48{
49  Int i;
50
51
52  upGridLineIndex = left->getVlineIndex(beginVline);
53
54  lowGridLineIndex = left->getVlineIndex(endVline);
55
56  Int n = upGridLineIndex-lowGridLineIndex+1; //number of grid lines
57  leftIndices = (Int*) malloc(sizeof(Int) * n);
58  assert(leftIndices);
59  rightIndices = (Int*) malloc(sizeof(Int) * n);
60  assert(rightIndices);
61  for(i=0; i<n; i++)
62    {
63
64      leftIndices[i] = left->getInnerIndex(i+beginVline);
65      rightIndices[i] = right->getInnerIndex(i+beginVline);
66    }
67}
68
69
70rectBlock::~rectBlock()
71{
72  free(leftIndices);
73  free(rightIndices);
74}
75
76void rectBlock::print()
77{
78  Int i;
79  printf("block:\n");
80  for(i=upGridLineIndex; i >= lowGridLineIndex; i--)
81    {
82      printf("gridline %i, (%i,%i)\n", i, leftIndices[upGridLineIndex-i], rightIndices[upGridLineIndex-i]);
83    }
84}
85
86
87
88void rectBlock::draw(Real* u_values, Real* v_values)
89{
90  Int i,j,k;
91  //upgrid line to bot grid line
92#ifdef DEBUG
93printf("upGridLineIndex=%i, lowGridLineIndex=%i\n", upGridLineIndex, lowGridLineIndex);
94#endif
95  for(k=0, i=upGridLineIndex; i > lowGridLineIndex; i--, k++)
96    {
97      glBegin(GL_QUAD_STRIP);
98
99      for(j=leftIndices[k+1]; j<= rightIndices[k+1]; j++)
100	{
101	  glVertex2f(u_values[j], v_values[i]);
102	  glVertex2f(u_values[j], v_values[i-1]);
103	}
104      glEnd();
105    }
106}
107
108
109Int rectBlock::num_quads()
110{
111  Int ret=0;
112  Int k,i;
113  for(k=0, i=upGridLineIndex; i>lowGridLineIndex; i--, k++)
114    {
115      ret += (rightIndices[k+1]-leftIndices[k+1]);
116    }
117  return ret;
118}
119
120Int rectBlockArray::num_quads()
121{
122  Int ret=0;
123  for(Int i=0; i<n_elements; i++)
124    ret += array[i]->num_quads();
125  return ret;
126}
127
128rectBlockArray::rectBlockArray(Int s)
129{
130  Int i;
131  n_elements = 0;
132  size = s;
133  array = (rectBlock**) malloc(sizeof(rectBlock*) * s);
134  assert(array);
135//initialization
136  for(i=0; i<s; i++)
137    array[i] = NULL;
138}
139
140rectBlockArray::~rectBlockArray()
141{
142  Int i;
143  for(i=0; i<size; i++)
144    {
145      if(array[i] != NULL)
146	delete array[i];
147    }
148  free(array);
149}
150
151//put to the end of the array, check the size
152void rectBlockArray::insert(rectBlock* newBlock)
153{
154  Int i;
155  if(n_elements == size) //full
156    {
157      rectBlock** temp = (rectBlock**) malloc(sizeof(rectBlock) * (2*size+1));
158      assert(temp);
159      //initialization
160      for(i=0; i<2*size+1; i++)
161	temp[i] = NULL;
162
163      for(i=0; i<n_elements; i++)
164	temp[i] = array[i];
165
166      free(array);
167      array = temp;
168      size = 2*size +  1;
169    }
170
171  array[n_elements++] = newBlock;
172}
173
174void rectBlockArray::print()
175{
176  Int i;
177  for(i=0; i<n_elements; i++)
178    array[i]->print();
179}
180
181void rectBlockArray::draw(Real* u_values, Real* v_values)
182{
183  Int i;
184  for(i=0; i<n_elements; i++)
185    array[i]->draw(u_values, v_values);
186}
187
188
189
190
191
192
193
194
195
196
197