glutBitmapCharacter -- renders a bitmap character using OpenGL.
void glutBitmapCharacter (void *font, int character);
Without using any display lists, glutBitmapCharacter renders the character in the named bitmap font. The available fonts are:
GLUT_BITMAP_8_BY_13
A fixed width font with every character fitting in an 8 by 13
pixel rectangle. The exact bitmaps to be used is defined by the
standard X glyph bitmaps for the X font named:
-misc-fixed-medium-r-normal--13-120-75-75-C-80-iso8859-1
GLUT_BITMAP_9_BY_15
A fixed width font with every character fitting in an 9 by 15
pixel rectangle. The exact bitmaps to be used is defined by the
standard X glyph bitmaps for the X font named:
-misc-fixed-medium-r-normal--15-140-75-75-C-90-iso8859-1
GLUT_BITMAP_TIMES_ROMAN_10
A 10-point proportional spaced Times Roman font. The exact bit-
maps to be used is defined by the standard X glyph bitmaps for
the X font named:
-adobe-times-medium-r-normal--10-100-75-75-p-54-iso8859-1
GLUT_BITMAP_TIMES_ROMAN_24
A 24-point proportional spaced Times Roman font. The exact bit-
maps to be used is defined by the standard X glyph bitmaps for
the X font named:
-adobe-times-medium-r-normal--24-240-75-75-p-124-iso8859-1
GLUT_BITMAP_HELVETICA_10
A 10-point proportional spaced Helvetica font. The exact bit-
maps to be used is defined by the standard X glyph bitmaps for
the X font named:
-adobe-helvetica-medium-r-normal--10-100-75-75-p-56-iso8859-1
GLUT_BITMAP_HELVETICA_12
A 12-point proportional spaced Helvetica font. The exact bit-
maps to be used is defined by the standard X glyph bitmaps for
the X font named:
-adobe-helvetica-medium-r-normal--12-120-75-75-p-67-iso8859-1
GLUT_BITMAP_HELVETICA_18
A 18-point proportional spaced Helvetica font. The exact bit-
maps to be used is defined by the standard X glyph bitmaps for
the X font named:
-adobe-helvetica-medium-r-normal--18-180-75-75-p-98-iso8859-1
Rendering a nonexistent character has no effect. glutBitmapCharacter automatically sets the OpenGL unpack pixel storage modes it needs appropriately and saves and restores the previous modes before return- ing. The generated call to glBitmap will adjust the current raster position based on the width of the character.
Here is a routine that shows how to render a string of ASCII text with glutBitmapCharacter:
void
output(int x, int y, char *string)
{
int len, i;
glRasterPos2f(x, y);
len = (int) strlen(string);
for (i = 0; i < len; i++) {
glutBitmapCharacter(GLUT_BITMAP_HELVETICA_18, string[i]);
}
}