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1 #include <stdio.h>
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2 #include <stdlib.h>
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3 #include <assert.h>
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4 #ifndef __APPLE__
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5 #include <GL/glut.h>
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6 #else
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7 #include <GLUT/glut.h>
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8 #endif
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9 #include "imtk.h"
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10
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11 void disp(void);
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12 void gui(void);
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13 void reshape(int x, int y);
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14 void keyb(unsigned char key, int x, int y);
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15 void keyb_up(unsigned char key, int x, int y);
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16 void skeyb(int key, int x, int y);
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17 void skeyb_up(int key, int x, int y);
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18 void mouse(int bn, int state, int x, int y);
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19 void motion(int x, int y);
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20
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21 int xsz, ysz;
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22
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23 int main(int argc, char **argv)
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24 {
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25 float lpos[] = {-1, 1, 1, 0};
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26 float white[] = {1, 1, 1, 1};
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27 float color[] = {0.9, 0.8, 0.73, 1};
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28
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29 glutInitWindowSize(800, 600);
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30 glutInit(&argc, argv);
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31 glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE);
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32 glutCreateWindow("imgui test");
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33
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34 glutDisplayFunc(disp);
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35 glutReshapeFunc(reshape);
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36 glutKeyboardFunc(keyb);
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37 glutKeyboardUpFunc(keyb_up);
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38 glutSpecialFunc(skeyb);
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39 glutSpecialUpFunc(skeyb_up);
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40 glutMouseFunc(mouse);
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41 glutMotionFunc(motion);
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42 glutPassiveMotionFunc(motion);
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43
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44 glEnable(GL_DEPTH_TEST);
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45 glEnable(GL_CULL_FACE);
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46 glEnable(GL_LIGHTING);
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47 glEnable(GL_LIGHT0);
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48 glLightfv(GL_LIGHT0, GL_POSITION, lpos);
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49
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50 glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, color);
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51 glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, white);
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52 glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, 60.0);
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53
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54 glutMainLoop();
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55 return 0;
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56 }
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57
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58 void disp(void)
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59 {
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60 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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61
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62 glViewport(200, 0, xsz - 200, ysz);
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63
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64 glMatrixMode(GL_PROJECTION);
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65 glLoadIdentity();
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66 gluPerspective(45.0, (float)(xsz - 200) / (float)ysz, 1.0, 1000.0);
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67
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68 glMatrixMode(GL_MODELVIEW);
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69 glLoadIdentity();
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70 glTranslatef(0, 0, -8);
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71 glRotatef(25, 1, 0, 0);
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72
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73 glFrontFace(GL_CW);
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74 glutSolidTeapot(1.0);
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75 glFrontFace(GL_CCW);
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76
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77
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78 glViewport(0, 0, 200, ysz);
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79 imtk_inp_reshape(200, ysz);
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80
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81 gui();
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82
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83 glutSwapBuffers();
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84 assert(glGetError() == GL_NO_ERROR);
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85 }
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86
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87 void gui(void)
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88 {
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89 static int bnshow;
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90 static char textbuf[256];
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91 static char textbuf2[256];
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92
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93 imtk_begin();
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94
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95 glBegin(GL_QUADS);
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96 glColor3f(0.6, 0.6, 0.6);
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97 glVertex2f(0, 0);
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98 glVertex2f(200, 0);
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99 glVertex2f(200, glutGet(GLUT_WINDOW_HEIGHT));
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100 glVertex2f(0, glutGet(GLUT_WINDOW_HEIGHT));
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101 glEnd();
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102
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103 if(imtk_button(IMUID, "red", 30, 50)) {
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104 float color[] = {1, 0.4, 0.3, 1};
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105 glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, color);
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106 glutPostRedisplay();
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107 }
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108 if(imtk_button(IMUID, "blue", 30, 100)) {
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109 float color[] = {0.3, 0.4, 1, 1};
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110 glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, color);
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111 glutPostRedisplay();
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112 }
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113
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114 imtk_textbox(IMUID, textbuf, sizeof textbuf, 30, 200);
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115 imtk_textbox(IMUID, textbuf2, sizeof textbuf2, 30, 250);
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116
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117 if((bnshow = imtk_checkbox(IMUID, "show hidden button", 30, 300, bnshow))) {
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118 if(imtk_button(IMUID, "yellow", 50, 340)) {
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119 float color[] = {0.8, 0.75, 0.3, 1};
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120 glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, color);
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121 glutPostRedisplay();
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122 }
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123 }
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124
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125 if(imtk_button(IMUID, "Quit", 30, 500)) {
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126 exit(0);
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127 }
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128
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129 imtk_end();
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130 }
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131
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132 void reshape(int x, int y)
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133 {
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134 xsz = x;
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135 ysz = y;
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136
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137 glViewport(0, 0, x, y);
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138 }
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139
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140 void keyb(unsigned char key, int x, int y)
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141 {
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142 switch(key) {
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143 case 27:
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144 exit(0);
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145
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146 default:
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147 break;
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148 }
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149
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150 imtk_inp_key(key, IMTK_DOWN);
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151 }
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152
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153 void keyb_up(unsigned char key, int x, int y)
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154 {
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155 imtk_inp_key(key, IMTK_UP);
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156 }
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157
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158 void skeyb(int key, int x, int y)
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159 {
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160 imtk_inp_key(key, IMTK_DOWN);
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161 }
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162
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163 void skeyb_up(int key, int x, int y)
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164 {
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165 imtk_inp_key(key, IMTK_UP);
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166 }
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167
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168 void mouse(int bn, int state, int x, int y)
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169 {
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170 imtk_inp_mouse(bn, state == GLUT_DOWN ? IMTK_DOWN : IMTK_UP);
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171 }
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172
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173 void motion(int x, int y)
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174 {
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175 imtk_inp_motion(x, y);
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176 }
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