+++ /dev/null
-/*
- glutfonts.c - Rendering GLUT's built-in fonts.
-
- cc -o glutfonts glutfonts.c -lglut -lGLU -lGL -lXmu -lX11 -lm
-*/
-
-/*
- Copyright (c) Gerard Lanois, 1998.
-
- This program is freely distributable without licensing fees and is
- provided without guarantee or warrantee expressed or implied. This
- program is -not- in the public domain.
-*/
-
-#include <stdio.h>
-#include <string.h>
-#include <math.h>
-
-#ifdef WIN32
-#include <windows.h>
-#endif
-#include <GL/gl.h>
-#include "glut.h"
-
-typedef enum {
- MODE_BITMAP,
- MODE_STROKE
-} mode_type;
-
-static mode_type mode;
-static int font_index;
-
-void
-print_bitmap_string(void* font, char* s)
-{
- if (s && strlen(s)) {
- while (*s) {
- glutBitmapCharacter(font, *s);
- s++;
- }
- }
-}
-
-void
-print_stroke_string(void* font, char* s)
-{
- if (s && strlen(s)) {
- while (*s) {
- glutStrokeCharacter(font, *s);
- s++;
- }
- }
-}
-void
-my_init()
-{
- mode = MODE_BITMAP;
- font_index = 0;
-}
-
-void
-my_reshape(int w, int h)
-{
- GLdouble size;
- GLdouble aspect;
-
- /* Use the whole window. */
- glViewport(0, 0, w, h);
-
- /* We are going to do some 2-D orthographic drawing. */
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- size = (GLdouble)((w >= h) ? w : h) / 2.0;
- if (w <= h) {
- aspect = (GLdouble)h/(GLdouble)w;
- glOrtho(-size, size, -size*aspect, size*aspect, -100000.0, 100000.0);
- }
- else {
- aspect = (GLdouble)w/(GLdouble)h;
- glOrtho(-size*aspect, size*aspect, -size, size, -100000.0, 100000.0);
- }
-
- /* Make the world and window coordinates coincide so that 1.0 in */
- /* model space equals one pixel in window space. */
- glScaled(aspect, aspect, 1.0);
-
- /* Now determine where to draw things. */
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
-
-}
-
-void
-my_handle_key(GLubyte key, GLint x, GLint y)
-{
- switch (key) {
-
- case 27: /* Esc - Quits the program. */
- printf("done.\n");
- exit(1);
- break;
-
- case ' ': /* Space - toggles mode. */
- mode = (mode == MODE_BITMAP) ? MODE_STROKE : MODE_BITMAP;
- font_index = 0;
- glutPostRedisplay();
- break;
-
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- if (mode == MODE_BITMAP || key == '1' || key == '2') {
- font_index = key - '1';
- }
- glutPostRedisplay();
- break;
-
- default:
- break;
- }
-}
-
-void
-draw_stuff()
-{
- char string[8][256];
- unsigned int i, j;
- unsigned int count;
-
- void* bitmap_fonts[7] = {
- GLUT_BITMAP_9_BY_15,
- GLUT_BITMAP_8_BY_13,
- GLUT_BITMAP_TIMES_ROMAN_10,
- GLUT_BITMAP_TIMES_ROMAN_24,
- GLUT_BITMAP_HELVETICA_10,
- GLUT_BITMAP_HELVETICA_12,
- GLUT_BITMAP_HELVETICA_18
- };
-
- char* bitmap_font_names[7] = {
- "GLUT_BITMAP_9_BY_15",
- "GLUT_BITMAP_8_BY_13",
- "GLUT_BITMAP_TIMES_ROMAN_10",
- "GLUT_BITMAP_TIMES_ROMAN_24",
- "GLUT_BITMAP_HELVETICA_10",
- "GLUT_BITMAP_HELVETICA_12",
- "GLUT_BITMAP_HELVETICA_18"
- };
-
- void* stroke_fonts[2] = {
- GLUT_STROKE_ROMAN,
- GLUT_STROKE_MONO_ROMAN
- };
-
- void* stroke_font_names[2] = {
- "GLUT_STROKE_ROMAN",
- "GLUT_STROKE_MONO_ROMAN"
- };
-
- GLfloat x, y, ystep, yild, stroke_scale;
- count = 0;
- my_init();
-
-
- /* Set up some strings with the characters to draw. */
- for (i=1; i < 32; i++) { /* Skip zero - it's the null terminator! */
- string[0][count] = i;
- count++;
- }
- string[0][count] = '\0';
-
- for (i=32; i < 64; i++) {
- string[1][count] = i;
- count++;
- }
- string[1][count] = '\0';
-
- count = 0;
- for (i=64; i < 96; i++) {
- string[2][count] = i;
- count++;
- }
- string[2][count] = '\0';
-
- count = 0;
- for (i=96; i < 128; i++) {
- string[3][count] = i;
- count++;
- }
- string[3][count] = '\0';
-
- count = 0;
- for (i=128; i < 160; i++) {
- string[4][count] = i;
- count++;
- }
- string[4][count] = '\0';
-
- count = 0;
- for (i=160; i < 192; i++) {
- string[5][count] = i;
- count++;
- }
- string[5][count] = '\0';
-
- count = 0;
- for (i=192; i < 224; i++) {
- string[6][count] = i;
- count++;
- }
- string[6][count] = '\0';
-
- count = 0;
- for (i=224; i < 256; i++) {
- string[7][count] = i;
- count++;
- }
- string[7][count] = '\0';
-
-
- /* Draw the strings, according to the current mode and font. */
- glColor4f(0.0, 1.0, 0.0, 1);
- x = -225.0;
- y = 70.0;
- ystep = 500.0;
- yild = 20.0;
- if (mode == MODE_BITMAP) {
- glRasterPos2f(-150, y+1.25*yild);
- print_bitmap_string(bitmap_fonts[4],"Smyrna Graph Visualizer ver 0.99");
- }
- else {
- stroke_scale = 0.1f;
- glMatrixMode(GL_MODELVIEW);
- glPushMatrix(); {
- glTranslatef(x, y+1.25*yild, 0.0);
- glScalef(stroke_scale, stroke_scale, stroke_scale);
- print_stroke_string(
- stroke_fonts[0], "Smyrna Graphviz Visualizer Font test 001");
- } glPopMatrix();
- }
-}
-
-void
-my_display(void)
-{
-
- /* Clear the window. */
- glClearColor(1.0, 1.0, 1.0, 1.0);
- glClear(GL_COLOR_BUFFER_BIT);
-
- draw_stuff();
-
- glutSwapBuffers();
-}
-
-int
-__main(int argc, char **argv)
-{
-
- glutInitWindowSize(500, 250);
- glutInit(&argc, argv);
- glutInitDisplayMode(GLUT_RGB|GLUT_DOUBLE);
-
- glutCreateWindow("GLUT fonts");
-
- my_init();
-
- glutDisplayFunc(my_display);
- glutReshapeFunc(my_reshape);
- glutKeyboardFunc(my_handle_key);
-
- glutMainLoop();
-
- return 0;
-}
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projects / graphviz / commitdiff