raster_font.cpp

#include <GL/gl.h>
#include <GL/glut.h>

GLubyte rasters[24] = { 0x00, 0x00,
                        0x06, 0x00,
                        0x06, 0x00,
                        0x06, 0x00,
                        0x06, 0x00,
                        0x06, 0x00,
                        0x06, 0x00,
                        0x06, 0x00,
                        0x06, 0x00,
                        0x3f, 0xc0,
                        0x3f, 0xc0 };

void init(void)
{
   glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
   glClearColor (0.0, 0.0, 0.0, 0.0);
}

void display(void)
{
   glClear(GL_COLOR_BUFFER_BIT);
   glColor3f (0, 1.0, 0);
   glRasterPos2i (20, 20);
   glBitmap (10, 12, 0.0, 0.0, 11.0, 0.0, rasters);
   glBitmap (10, 12, 0.0, 0.0, 11.0, 0.0, rasters);
   glBitmap (10, 12, 0.0, 0.0, 11.0, 0.0, rasters);
   glFlush();
}

void reshape(int w, int h)
{
   glViewport(0, 0, (GLsizei) w, (GLsizei) h);
   glMatrixMode(GL_PROJECTION);
   glLoadIdentity();
   glOrtho(0, w, 0, h, -1.0, 1.0);
   glMatrixMode(GL_MODELVIEW);
}

/* ARGSUSED1 */
void keyboard(unsigned char key, int x, int y)
{
   switch (key) {
      case 27:
         exit(0);
   }
}

/*  Main Loop
 *  Open window with initial window size, title bar,
 *  RGBA display mode, and handle input events.
 */
int main(int argc, char** argv)
{
   glutInit(&argc, argv);
   glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
   glutInitWindowSize(180, 50);
   glutInitWindowPosition(100, 100);
   glutCreateWindow(argv[0]);
   init();
   glutReshapeFunc(reshape);
   glutKeyboardFunc(keyboard);
   glutDisplayFunc(display);
   glutMainLoop();
   return 0;
}