progs/tests/multiwindow.c

   1
   2 /*
   3  * A skeleton/template GLUT program
   4  *
   5  * Written by Brian Paul and in the public domain.
   6  */
   7
   8
   9 /*
  10  * Revision 1.1  2001/08/21 14:25:31  brianp
  11  * simple multi-window GLUT test prog
  12  *
  13  * Revision 1.1.1.1  1999/08/19 00:55:42  jtg
  14  * Imported sources
  15  *
  16  * Revision 1.2  1998/11/07 14:20:14  brianp
  17  * added simple rotation, animation of cube
  18  *
  19  * Revision 1.1  1998/11/07 14:14:37  brianp
  20  * Initial revision
  21  *
  22  */
  23
  24
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <math.h>
  28 #include <GL/glew.h>
  29 #include <GL/glut.h>
  30
  31
  32 static GLint Window[2];
  33
  34 static GLfloat Xrot = 0, Yrot = 0, Zrot = 0;
  35 static GLboolean Anim = GL_TRUE;
  36
  37
  38 static void Idle( void )
  39 {
  40    Xrot += 3.0;
  41    Yrot += 4.0;
  42    Zrot += 2.0;
  43
  44    glutSetWindow(Window[0]);
  45    glutPostRedisplay();
  46    glutSetWindow(Window[1]);
  47    glutPostRedisplay();
  48 }
  49
  50
  51 static void Display0( void )
  52 {
  53    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
  54
  55    glEnable(GL_LIGHTING);
  56    glEnable(GL_LIGHT0);
  57    glEnable(GL_DEPTH_TEST);
  58
  59    glPushMatrix();
  60    glRotatef(Xrot, 1, 0, 0);
  61    glRotatef(Yrot, 0, 1, 0);
  62    glRotatef(Zrot, 0, 0, 1);
  63
  64    glColor3f(0, 1, 0);
  65    glutSolidCube(2.0);
  66
  67    glPopMatrix();
  68
  69    glutSwapBuffers();
  70 }
  71
  72
  73 static void Display1( void )
  74 {
  75    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
  76
  77    glPushMatrix();
  78    glRotatef(Xrot, 1, 0, 0);
  79    glRotatef(Yrot, 0, 1, 0);
  80    glRotatef(Zrot, 0, 0, 1);
  81
  82    glShadeModel(GL_FLAT);
  83
  84    glBegin(GL_TRIANGLE_STRIP);
  85    glColor3f(1, 0, 0);
  86    glVertex2f(-1, -1);
  87    glVertex2f( 1, -1);
  88    glColor3f(1, 0, 0);
  89    glVertex2f( -1, 1);
  90    glColor3f(0, 0, 1);
  91    glVertex2f( 1, 1);
  92    glEnd();
  93
  94    glPopMatrix();
  95
  96    glutSwapBuffers();
  97 }
  98
  99
 100 static void Reshape( int width, int height )
 101 {
 102    glViewport( 0, 0, width, height );
 103    glMatrixMode( GL_PROJECTION );
 104    glLoadIdentity();
 105    glFrustum( -1.0, 1.0, -1.0, 1.0, 5.0, 25.0 );
 106    glMatrixMode( GL_MODELVIEW );
 107    glLoadIdentity();
 108    glTranslatef( 0.0, 0.0, -15.0 );
 109 }
 110
 111
 112 static void Key( unsigned char key, int x, int y )
 113 {
 114    const GLfloat step = 3.0;
 115    (void) x;
 116    (void) y;
 117    switch (key) {
 118       case 'a':
 119          Anim = !Anim;
 120          if (Anim)
 121             glutIdleFunc(Idle);
 122          else
 123             glutIdleFunc(NULL);
 124          break;
 125       case 'z':
 126          Zrot -= step;
 127          break;
 128       case 'Z':
 129          Zrot += step;
 130          break;
 131       case 27:
 132          exit(0);
 133          break;
 134    }
 135    glutPostRedisplay();
 136 }
 137
 138
 139
 140
 141 int main( int argc, char *argv[] )
 142 {
 143    glutInit( &argc, argv );
 144
 145    glutInitWindowPosition( 0, 0 );
 146    glutInitWindowSize( 400, 400 );
 147    glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH );
 148    Window[0] = glutCreateWindow(argv[0]);
 149    glewInit();
 150    glutReshapeFunc( Reshape );
 151    glutKeyboardFunc( Key );
 152    glutDisplayFunc( Display0 );
 153    glutIdleFunc(Idle);
 154    printf("GL_RENDERER[0] = %s\n", (char *) glGetString(GL_RENDERER));
 155
 156    glutInitWindowPosition( 500, 0 );
 157    glutInitWindowSize( 400, 400 );
 158    glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH );
 159    Window[1] = glutCreateWindow(argv[0]);
 160    glewInit();
 161    glutReshapeFunc( Reshape );
 162    glutKeyboardFunc( Key );
 163    glutDisplayFunc( Display1 );
 164    glutIdleFunc(Idle);
 165    printf("GL_RENDERER[1] = %s\n", (char *) glGetString(GL_RENDERER));
 166
 167    glutMainLoop();
 168
 169    return 0;
 170 }