168 lines
6.2 KiB
C
168 lines
6.2 KiB
C
/*
|
|
* Copyright (c) 1993-1997, Silicon Graphics, Inc.
|
|
* ALL RIGHTS RESERVED
|
|
* Permission to use, copy, modify, and distribute this software for
|
|
* any purpose and without fee is hereby granted, provided that the above
|
|
* copyright notice appear in all copies and that both the copyright notice
|
|
* and this permission notice appear in supporting documentation, and that
|
|
* the name of Silicon Graphics, Inc. not be used in advertising
|
|
* or publicity pertaining to distribution of the software without specific,
|
|
* written prior permission.
|
|
*
|
|
* THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
|
|
* AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
|
|
* INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
|
|
* FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
|
|
* GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
|
|
* SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
|
|
* KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
|
|
* LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
|
|
* THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN
|
|
* ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
|
|
* ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
|
|
* POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*
|
|
* US Government Users Restricted Rights
|
|
* Use, duplication, or disclosure by the Government is subject to
|
|
* restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
|
|
* (c)(1)(ii) of the Rights in Technical Data and Computer Software
|
|
* clause at DFARS 252.227-7013 and/or in similar or successor
|
|
* clauses in the FAR or the DOD or NASA FAR Supplement.
|
|
* Unpublished-- rights reserved under the copyright laws of the
|
|
* United States. Contractor/manufacturer is Silicon Graphics,
|
|
* Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.
|
|
*
|
|
* OpenGL(R) is a registered trademark of Silicon Graphics, Inc.
|
|
*/
|
|
|
|
/*
|
|
* font.c
|
|
*
|
|
* Draws some text in a bitmapped font. Uses glBitmap()
|
|
* and other pixel routines. Also demonstrates use of
|
|
* display lists.
|
|
*/
|
|
#include <GL/glut.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
GLubyte space[] =
|
|
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
|
|
|
|
GLubyte letters[][13] = {
|
|
{0x00, 0x00, 0xc3, 0xc3, 0xc3, 0xc3, 0xff, 0xc3, 0xc3, 0xc3, 0x66, 0x3c, 0x18},
|
|
{0x00, 0x00, 0xfe, 0xc7, 0xc3, 0xc3, 0xc7, 0xfe, 0xc7, 0xc3, 0xc3, 0xc7, 0xfe},
|
|
{0x00, 0x00, 0x7e, 0xe7, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xe7, 0x7e},
|
|
{0x00, 0x00, 0xfc, 0xce, 0xc7, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xc7, 0xce, 0xfc},
|
|
{0x00, 0x00, 0xff, 0xc0, 0xc0, 0xc0, 0xc0, 0xfc, 0xc0, 0xc0, 0xc0, 0xc0, 0xff},
|
|
{0x00, 0x00, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xfc, 0xc0, 0xc0, 0xc0, 0xff},
|
|
{0x00, 0x00, 0x7e, 0xe7, 0xc3, 0xc3, 0xcf, 0xc0, 0xc0, 0xc0, 0xc0, 0xe7, 0x7e},
|
|
{0x00, 0x00, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xff, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3},
|
|
{0x00, 0x00, 0x7e, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x7e},
|
|
{0x00, 0x00, 0x7c, 0xee, 0xc6, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06},
|
|
{0x00, 0x00, 0xc3, 0xc6, 0xcc, 0xd8, 0xf0, 0xe0, 0xf0, 0xd8, 0xcc, 0xc6, 0xc3},
|
|
{0x00, 0x00, 0xff, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0},
|
|
{0x00, 0x00, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xdb, 0xff, 0xff, 0xe7, 0xc3},
|
|
{0x00, 0x00, 0xc7, 0xc7, 0xcf, 0xcf, 0xdf, 0xdb, 0xfb, 0xf3, 0xf3, 0xe3, 0xe3},
|
|
{0x00, 0x00, 0x7e, 0xe7, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xe7, 0x7e},
|
|
{0x00, 0x00, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xfe, 0xc7, 0xc3, 0xc3, 0xc7, 0xfe},
|
|
{0x00, 0x00, 0x3f, 0x6e, 0xdf, 0xdb, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0x66, 0x3c},
|
|
{0x00, 0x00, 0xc3, 0xc6, 0xcc, 0xd8, 0xf0, 0xfe, 0xc7, 0xc3, 0xc3, 0xc7, 0xfe},
|
|
{0x00, 0x00, 0x7e, 0xe7, 0x03, 0x03, 0x07, 0x7e, 0xe0, 0xc0, 0xc0, 0xe7, 0x7e},
|
|
{0x00, 0x00, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0xff},
|
|
{0x00, 0x00, 0x7e, 0xe7, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3},
|
|
{0x00, 0x00, 0x18, 0x3c, 0x3c, 0x66, 0x66, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3},
|
|
{0x00, 0x00, 0xc3, 0xe7, 0xff, 0xff, 0xdb, 0xdb, 0xc3, 0xc3, 0xc3, 0xc3, 0xc3},
|
|
{0x00, 0x00, 0xc3, 0x66, 0x66, 0x3c, 0x3c, 0x18, 0x3c, 0x3c, 0x66, 0x66, 0xc3},
|
|
{0x00, 0x00, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x3c, 0x3c, 0x66, 0x66, 0xc3},
|
|
{0x00, 0x00, 0xff, 0xc0, 0xc0, 0x60, 0x30, 0x7e, 0x0c, 0x06, 0x03, 0x03, 0xff}
|
|
};
|
|
|
|
GLuint fontOffset;
|
|
|
|
void makeRasterFont(void)
|
|
{
|
|
GLuint i, j;
|
|
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
|
|
|
|
fontOffset = glGenLists (128);
|
|
for (i = 0,j = 'A'; i < 26; i++,j++) {
|
|
glNewList(fontOffset + j, GL_COMPILE);
|
|
glBitmap(8, 13, 0.0, 2.0, 10.0, 0.0, letters[i]);
|
|
glEndList();
|
|
}
|
|
glNewList(fontOffset + ' ', GL_COMPILE);
|
|
glBitmap(8, 13, 0.0, 2.0, 10.0, 0.0, space);
|
|
glEndList();
|
|
}
|
|
|
|
void init(void)
|
|
{
|
|
glShadeModel (GL_FLAT);
|
|
makeRasterFont();
|
|
}
|
|
|
|
void printString(char *s)
|
|
{
|
|
glPushAttrib (GL_LIST_BIT);
|
|
glListBase(fontOffset);
|
|
glCallLists((GLsizei) strlen(s), GL_UNSIGNED_BYTE, (GLubyte *) s);
|
|
glPopAttrib ();
|
|
}
|
|
|
|
/* Everything above this line could be in a library
|
|
* that defines a font. To make it work, you've got
|
|
* to call makeRasterFont() before you start making
|
|
* calls to printString().
|
|
*/
|
|
void display(void)
|
|
{
|
|
GLfloat white[3] = { 1.0, 1.0, 1.0 };
|
|
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
|
glColor3fv(white);
|
|
|
|
glRasterPos2i(20, 60);
|
|
printString("THE QUICK BROWN FOX JUMPS");
|
|
glRasterPos2i(20, 40);
|
|
printString("OVER A LAZY DOG");
|
|
glFlush ();
|
|
}
|
|
|
|
void reshape(int w, int h)
|
|
{
|
|
glViewport(0, 0, (GLsizei) w, (GLsizei) h);
|
|
glMatrixMode(GL_PROJECTION);
|
|
glLoadIdentity();
|
|
glOrtho (0.0, w, 0.0, 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(300, 100);
|
|
glutInitWindowPosition (100, 100);
|
|
glutCreateWindow(argv[0]);
|
|
init();
|
|
glutReshapeFunc(reshape);
|
|
glutKeyboardFunc(keyboard);
|
|
glutDisplayFunc(display);
|
|
glutMainLoop();
|
|
return 0;
|
|
}
|