#include "glutbitmap.h"
void glutBitmapCharacter(GLUTbitmapFont font, int c)
{
const BitmapCharRec *ch;
BitmapFontPtr fi = (BitmapFontPtr) font;
if (c < fi->first ||
c >= fi->first + fi->num_chars)
return;
ch = fi->ch[c - fi->first];
if (!ch)
return;
glPushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);
glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE);
glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE);
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glBitmap(ch->width, ch->height, ch->xorig, ch->yorig,
ch->advance, 0, ch->bitmap);
glPopClientAttrib();
}
int glutBitmapWidth (GLUTbitmapFont font, int c)
{
const BitmapCharRec *ch;
BitmapFontPtr fi = (BitmapFontPtr) font;
if (c < fi->first || c >= fi->first + fi->num_chars)
return 0;
ch = fi->ch[c - fi->first];
if (ch)
return ch->advance;
return 0;
}
int glutBitmapLength(GLUTbitmapFont font, const unsigned char *string)
{
int length = 0;
for (; *string; string++)
length += glutBitmapWidth(font, *string);
return length;
}