DRAWF.C

/* 
 * (c) Copyright 1993, Silicon Graphics, Inc. 
 *               1993-1995 Microsoft Corporation 
 * 
 * ALL RIGHTS RESERVED 
 * 
 * Please refer to OpenGL/readme.txt for additional information 
 * 
 */ 
 
/* 
 *  drawf.c 
 *  Draws the bitmapped letter F on the screen (several times). 
 *  This demonstrates use of the glBitmap() call. 
 */ 
#include "glos.h" 
 
#include <GL/gl.h> 
#include <GL/glu.h> 
#include <GL/glaux.h> 
 
void myinit(void); 
void CALLBACK myReshape(GLsizei w, GLsizei h); 
void CALLBACK display(void); 
 
GLubyte rasters[24] = { 
    0xc0, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0xc0, 0x00, 
    0xff, 0x00, 0xff, 0x00, 0xc0, 0x00, 0xc0, 0x00, 0xc0, 0x00, 
    0xff, 0xc0, 0xff, 0xc0}; 
 
void myinit(void) 
{ 
    glPixelStorei (GL_UNPACK_ALIGNMENT, 1); 
    glClearColor (0.0, 0.0, 0.0, 0.0); 
} 
 
void CALLBACK display(void) 
{ 
    glClear(GL_COLOR_BUFFER_BIT); 
    glColor3f (1.0, 1.0, 1.0); 
    glRasterPos2i (20.5, 20.5); 
    glBitmap (10, 12, 0.0, 0.0, 12.0, 0.0, rasters); 
    glBitmap (10, 12, 0.0, 0.0, 12.0, 0.0, rasters); 
    glBitmap (10, 12, 0.0, 0.0, 12.0, 0.0, rasters); 
    glFlush(); 
} 
 
void CALLBACK myReshape(GLsizei w, GLsizei h) 
{ 
    glViewport(0, 0, w, h); 
    glMatrixMode(GL_PROJECTION); 
    glLoadIdentity(); 
    glOrtho (0, w, 0, h, -1.0, 1.0); 
    glMatrixMode(GL_MODELVIEW); 
} 
 
/*  Main Loop 
 *  Open window with initial window size, title bar,  
 *  RGBA display mode, and handle input events. 
 */ 
int main(int argc, char** argv) 
{ 
    auxInitDisplayMode (AUX_SINGLE | AUX_RGB); 
    auxInitPosition (0, 0, 500, 500); 
    auxInitWindow ("Bitmap"); 
    myinit(); 
    auxReshapeFunc (myReshape); 
    auxMainLoop(display); 
    return(0); 
}