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gtkradiant/contrib/gtkgensurf/font.cpp

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/*
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GenSurf plugin for GtkRadiant
Copyright (C) 2001 David Hyde, Loki software and qeradiant.com
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This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
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//
// Texture Font
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//
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// Taken from LeoCAD (www.leocad.org) and used in GtkGenSurf
// with permission from the author.
//
// Leonardo Zide (leo@lokigames.com)
//
#include <stdlib.h>
#include "gensurf.h"
static const unsigned char data[2048] = {
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255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
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31, 126, 128, 60, 127, 128, 255, 255, 243, 252, 201, 255, 255, 255, 255, 255,
159, 228, 225, 60, 193, 243, 128, 255, 243, 252, 201, 255, 255, 255, 255, 255,
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207, 240, 255, 60, 255, 243, 255, 255, 243, 252, 228, 255, 255, 255, 255, 255,
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255, 255, 255, 60, 255, 255, 255, 255, 243, 252, 255, 255, 255, 255, 255, 255,
255, 255, 255, 153, 255, 255, 255, 0, 242, 252, 255, 255, 255, 255, 255, 255,
255, 255, 255, 153, 255, 255, 255, 255, 243, 252, 255, 255, 255, 255, 255, 255,
255, 255, 255, 195, 255, 255, 255, 255, 3, 252, 255, 255, 255, 255, 255, 255
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};
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typedef struct
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{
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unsigned char width;
float left, right, top, bottom;
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} LC_TXFVERT;
static LC_TXFVERT glyphs[93];
static GLuint texture;
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void texfont_init(){
if ( texture != 0 ) {
return;
}
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int i, j, x, y;
float inv = 1.0f / 128;
const char *charlines[16] = {
"abcdefghijklmn", "opqrstuvwxyz0", "123456789ABC", "DEFGHIJKLMN",
"OPQRSTUVWX", "YZ,.!;:<>/?{}@$%", "&*()-+=_[] #"
};
unsigned char lefts[7][17] = {
{ 1, 11, 21, 30, 40, 50, 56, 66, 76, 80, 84, 93, 97, 111, 121 },
{ 1, 11, 21, 31, 38, 47, 53, 63, 72, 86, 94, 103, 111, 120 },
{ 1, 10, 19, 28, 37, 46, 55, 64, 73, 82, 94, 106, 118, },
{ 1, 13, 24, 34, 47, 59, 64, 73, 84, 94, 108, 120 },
{ 1, 14, 25, 38, 50, 61, 71, 83, 94, 109, 120 },
{ 1, 12, 22, 26, 30, 35, 39, 43, 52, 61, 65, 75, 81, 87, 103, 112, 125 },
{ 3, 14, 23, 28, 33, 38, 47, 56, 65, 70, 75, 79, 88 }
};
// tops = 1 20 39 58 77 96 112 (+16)
memset( glyphs, 0, sizeof( glyphs ) );
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// ASCII 32-125
for ( i = 32; i < 126; i++ )
for ( x = 0; x < 7; x++ )
for ( y = 0; charlines[x][y]; y++ )
if ( charlines[x][y] == i ) {
glyphs[i - 32].width = lefts[x][y + 1] - lefts[x][y];
glyphs[i - 32].left = (float)lefts[x][y] * inv;
glyphs[i - 32].right = (float)( lefts[x][y + 1] ) * inv;
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if ( x != 6 ) {
glyphs[i - 32].top = (float)( 1 + 19 * x );
}
else{
glyphs[i - 32].top = 112;
}
glyphs[i - 32].bottom = glyphs[i - 32].top + 16;
glyphs[i - 32].top *= inv;
glyphs[i - 32].bottom *= inv;
}
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g_GLTable.m_pfn_qglGenTextures( 1, &texture );
g_GLTable.m_pfn_qglBindTexture( GL_TEXTURE_2D, texture );
g_GLTable.m_pfn_qglDisable( GL_TEXTURE_GEN_S );
g_GLTable.m_pfn_qglDisable( GL_TEXTURE_GEN_T );
g_GLTable.m_pfn_qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT );
g_GLTable.m_pfn_qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT );
g_GLTable.m_pfn_qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
g_GLTable.m_pfn_qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
// g_GLTable.m_pfn_qglPixelStorei (GL_UNPACK_ALIGNMENT, 1);
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unsigned char *buf = (unsigned char*)malloc( 128 * 128 );
memset( buf, 255, 128 * 128 );
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for ( i = 0; i < 2048; i++ )
for ( j = 0; j < 8; j++ )
if ( ( data[i] & ( 1 << j ) ) != 0 ) {
buf[i * 8 + j] = 0;
}
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g_GLTable.m_pfn_qglTexImage2D( GL_TEXTURE_2D, 0, GL_INTENSITY4, 128, 128, 0,
GL_LUMINANCE, GL_UNSIGNED_BYTE, buf );
free( buf );
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}
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void texfont_write( const char *text, float l, float t ){
if ( texture == 0 ) {
return;
}
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g_GLTable.m_pfn_qglColor3f( 0, 1, 0 );
g_GLTable.m_pfn_qglBindTexture( GL_TEXTURE_2D, texture );
g_GLTable.m_pfn_qglEnable( GL_TEXTURE_2D );
// g_GLTable.m_pfn_qglTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
g_GLTable.m_pfn_qglAlphaFunc( GL_GREATER, 0.0625 );
g_GLTable.m_pfn_qglEnable( GL_ALPHA_TEST );
more eol-style git-svn-id: svn://svn.icculus.org/gtkradiant/GtkRadiant/branches/ZeroRadiant@185 8a3a26a2-13c4-0310-b231-cf6edde360e5
2007-11-04 03:51:54 +00:00
uncrustify! now the code is only ugly on the *inside*
2012-03-17 20:01:54 +00:00
g_GLTable.m_pfn_qglBegin( GL_QUADS );
for ( const char* p = text; *p; p++ )
{
if ( *p < 32 || *p > 125 ) {
continue;
}
if ( glyphs[*p - 32].width == 0 ) {
continue;
}
more eol-style git-svn-id: svn://svn.icculus.org/gtkradiant/GtkRadiant/branches/ZeroRadiant@185 8a3a26a2-13c4-0310-b231-cf6edde360e5
2007-11-04 03:51:54 +00:00
uncrustify! now the code is only ugly on the *inside*
2012-03-17 20:01:54 +00:00
g_GLTable.m_pfn_qglTexCoord2f( glyphs[*p - 32].left, glyphs[*p - 32].top );
g_GLTable.m_pfn_qglVertex2f( l, t );
g_GLTable.m_pfn_qglTexCoord2f( glyphs[*p - 32].left, glyphs[*p - 32].bottom );
g_GLTable.m_pfn_qglVertex2f( l, t - 16 );
g_GLTable.m_pfn_qglTexCoord2f( glyphs[*p - 32].right, glyphs[*p - 32].bottom );
g_GLTable.m_pfn_qglVertex2f( l + glyphs[*p - 32].width, t - 16 );
g_GLTable.m_pfn_qglTexCoord2f( glyphs[*p - 32].right, glyphs[*p - 32].top );
g_GLTable.m_pfn_qglVertex2f( l + glyphs[*p - 32].width, t );
l += glyphs[*p - 32].width;
}
g_GLTable.m_pfn_qglEnd();
more eol-style git-svn-id: svn://svn.icculus.org/gtkradiant/GtkRadiant/branches/ZeroRadiant@185 8a3a26a2-13c4-0310-b231-cf6edde360e5
2007-11-04 03:51:54 +00:00
uncrustify! now the code is only ugly on the *inside*
2012-03-17 20:01:54 +00:00
g_GLTable.m_pfn_qglDisable( GL_ALPHA_TEST );
g_GLTable.m_pfn_qglDisable( GL_TEXTURE_2D );
g_GLTable.m_pfn_qglBindTexture( GL_TEXTURE_2D, 0 );
more eol-style git-svn-id: svn://svn.icculus.org/gtkradiant/GtkRadiant/branches/ZeroRadiant@185 8a3a26a2-13c4-0310-b231-cf6edde360e5
2007-11-04 03:51:54 +00:00
}
Reference in a new issue Copy permalink