83 lines
2.0 KiB
C++
83 lines
2.0 KiB
C++
|
|
/* Copyright (c) Mark J. Kilgard, 1997. */
|
|
|
|
/* 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. */
|
|
|
|
#ifndef __TEXFONT_H__
|
|
#define __TEXFONT_H__
|
|
|
|
#include <GL/gl.h>
|
|
#include <string>
|
|
|
|
#define TXF_FORMAT_BYTE 0
|
|
#define TXF_FORMAT_BITMAP 1
|
|
|
|
typedef struct
|
|
{
|
|
unsigned short c; /* Potentially support 16-bit glyphs. */
|
|
unsigned char width;
|
|
unsigned char height;
|
|
signed char xoffset;
|
|
signed char yoffset;
|
|
signed char advance;
|
|
char dummy; /* Space holder for alignment reasons. */
|
|
short x;
|
|
short y;
|
|
} TexGlyphInfo;
|
|
|
|
typedef struct {
|
|
GLfloat t0[2];
|
|
GLshort v0[2];
|
|
GLfloat t1[2];
|
|
GLshort v1[2];
|
|
GLfloat t2[2];
|
|
GLshort v2[2];
|
|
GLfloat t3[2];
|
|
GLshort v3[2];
|
|
GLfloat advance;
|
|
} TexGlyphVertexInfo;
|
|
|
|
typedef struct {
|
|
GLuint texobj;
|
|
int tex_width;
|
|
int tex_height;
|
|
int max_ascent;
|
|
int max_descent;
|
|
int max_width; // Celestia addition
|
|
int num_glyphs;
|
|
int min_glyph;
|
|
int range;
|
|
unsigned char *teximage;
|
|
TexGlyphInfo *tgi;
|
|
TexGlyphVertexInfo *tgvi;
|
|
TexGlyphVertexInfo **lut;
|
|
} TexFont;
|
|
|
|
extern char *txfErrorString(void);
|
|
|
|
extern TexFont *txfLoadFont(char *filename);
|
|
|
|
extern void txfUnloadFont(TexFont * txf);
|
|
|
|
extern GLuint txfEstablishTexture(TexFont * txf,
|
|
GLuint texobj, GLboolean setupMipmaps);
|
|
|
|
extern void txfBindFontTexture(TexFont * txf);
|
|
|
|
extern void txfGetStringMetrics(TexFont * txf,
|
|
char* s,
|
|
int len,
|
|
int& width, int& max_ascent, int& max_descent);
|
|
extern void txfGetStringMetrics(TexFont* txf,
|
|
std::string s,
|
|
int& width, int& max_ascent, int& max_descent);
|
|
|
|
extern void txfRenderGlyph(TexFont* txf, int c);
|
|
|
|
extern void txfRenderString(TexFont* txf, char* s, int len);
|
|
extern void txfRenderString(TexFont* txf, std::string s);
|
|
|
|
#endif // __TEXFONT_H__
|