gfx/libs/glut/stroke.c

   1 /*
   2  * FxGLUT version 0.12 - GLUT for Voodoo 1 and 2 under Linux
   3  * Copyright (C) 1999 Christopher John Purnell
   4  *                    cjp@lost.org.uk
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Library General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Library General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Library General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "internal.h"
  22
  23
  24 void
  25 glutStrokeCharacter (void *font, int c)
  26 {
  27    const GLUTStrokeFont *sfp = (GLUTStrokeFont *) _glut_font(font);
  28    const GLUTStrokeChar *scp;
  29    const GLUTStrokeStrip *ssp;
  30    const GLUTStrokeVertex *svp;
  31    unsigned i, j;
  32
  33    if (((unsigned)c) >= sfp->num || !(scp = sfp->table[c]))
  34       return;
  35
  36    ssp = scp->strip;
  37
  38    for (i = 0; i < scp->num; i++, ssp++) {
  39       svp = ssp->vertex;
  40
  41       glBegin(GL_LINE_STRIP);
  42       for (j = 0; j < ssp->num; j++, svp++) {
  43          glVertex2f(svp->x, svp->y);
  44       }
  45       glEnd();
  46    }
  47
  48    glTranslatef(scp->right, 0.0, 0.0);
  49 }
  50
  51
  52 void
  53 glutStrokeString (void *font, const unsigned char *string)
  54 {
  55    const GLUTStrokeFont *sfp = _glut_font(font);
  56    const GLUTStrokeChar *scp;
  57    const GLUTStrokeStrip *ssp;
  58    const GLUTStrokeVertex *svp;
  59    unsigned char c;
  60    unsigned i, j;
  61
  62    while ((c = *(string++))) {
  63       if (c < sfp->num && (scp = sfp->table[c])) {
  64          ssp = scp->strip;
  65
  66          for (i = 0; i < scp->num; i++, ssp++) {
  67             svp = ssp->vertex;
  68
  69             glBegin(GL_LINE_STRIP);
  70             for (j = 0; j < ssp->num; j++, svp++) {
  71                glVertex2f(svp->x, svp->y);
  72             }
  73             glEnd();
  74          }
  75
  76          glTranslatef(scp->right, 0.0, 0.0);
  77       }
  78    }
  79 }
  80
  81
  82 int
  83 glutStrokeWidth (void *font, int c)
  84 {
  85    const GLUTStrokeFont *sfp = _glut_font(font);
  86    const GLUTStrokeChar *scp;
  87
  88    if (((unsigned)c) >= sfp->num || !(scp = sfp->table[c]))
  89       return 0;
  90
  91    return scp->right;
  92 }
  93
  94
  95 int
  96 glutStrokeLength (void *font, const unsigned char *string)
  97 {
  98    const GLUTStrokeFont *sfp = _glut_font(font);
  99    const GLUTStrokeChar *scp;
 100    unsigned char c;
 101    int length = 0;
 102
 103    while ((c = *(string++))) {
 104       if (c < sfp->num && (scp = sfp->table[c]))
 105          length += scp->right;
 106    }
 107
 108    return length;
 109 }
 110
 111
 112 GLfloat
 113 glutStrokeHeight (void *font)
 114 {
 115    const GLUTStrokeFont *sfp = _glut_font(font);
 116
 117    return sfp->height;
 118 }