progs/tests/multiwindow.c

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