379 lines
12 KiB
C++
379 lines
12 KiB
C++
/*
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* demo.cpp: Demo of the OGLFT library
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* Copyright (C) 2002 lignum Computing, Inc. <oglft@lignumcomputing.com>
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* $Id$
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <unistd.h>
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#include <cstdlib>
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#include <iostream>
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#include <GL/glut.h>
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#include <OGLFT.h>
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static const char* USAGE = " fontfile";
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static const char* commands = "a/A: char rotate X, s/S: char rotate Y, d/D: char rotate Z, f/F: string rotate, r: reset all";
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static const char* text = "The quick brown fox jumps over a lazy dog.";
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static const float point_size = 16;
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static OGLFT::Monochrome* commands_face;
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static OGLFT::Monochrome* monochrome_face;
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static OGLFT::Grayscale* grayscale_face;
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static OGLFT::Translucent* translucent_face;
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static OGLFT::Outline* outline_face;
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static OGLFT::Filled* filled_face;
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#ifndef OGLFT_NO_SOLID
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static OGLFT::Solid* solid_face;
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#else
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static OGLFT::Monochrome* solid_face;
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#endif
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static OGLFT::MonochromeTexture* monochrome_texture_face;
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static OGLFT::GrayscaleTexture* grayscale_texture_face;
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static OGLFT::TranslucentTexture* translucent_texture_face;
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static float dy;
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static int viewport_width;
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static int viewport_height;
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static void init ( int /*argc*/, char* argv[] )
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{
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std::cout << glGetString( GL_VENDOR ) << " " << glGetString( GL_RENDERER ) << " "
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<< glGetString( GL_VERSION ) << std::endl;
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commands_face = new OGLFT::Monochrome( argv[1], point_size / 2. );
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commands_face->setHorizontalJustification( OGLFT::Face::CENTER );
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monochrome_face = new OGLFT::Monochrome( argv[1], point_size );
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monochrome_face->setHorizontalJustification( OGLFT::Face::CENTER );
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monochrome_face->setForegroundColor( 1., 0., 0., 1. );
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if ( !monochrome_face->isValid() ) {
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std::cerr << "failed to open face. exiting." << std::endl;
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exit( 1 );
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}
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grayscale_face = new OGLFT::Grayscale( argv[1], point_size );
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grayscale_face->setHorizontalJustification( OGLFT::Face::CENTER );
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grayscale_face->setForegroundColor( 0., 0., .5, 1. );
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grayscale_face->setBackgroundColor( 0., 1., 1., 1. );
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translucent_face = new OGLFT::Translucent( argv[1], point_size );
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translucent_face->setHorizontalJustification( OGLFT::Face::CENTER );
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translucent_face->setForegroundColor( 0., .5, 0., 1. );
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outline_face = new OGLFT::Outline( argv[1], point_size );
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outline_face->setHorizontalJustification( OGLFT::Face::CENTER );
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outline_face->setForegroundColor( 1., 1., 0., 1. );
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filled_face = new OGLFT::Filled( argv[1], point_size );
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filled_face->setHorizontalJustification( OGLFT::Face::CENTER );
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filled_face->setForegroundColor( .5, 0., 1., 1. );
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#ifndef OGLFT_NO_SOLID
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solid_face = new OGLFT::Solid( argv[1], point_size );
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solid_face->setDepth( 10. );
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solid_face->setCharacterRotationX( 25. );
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solid_face->setCharacterRotationY( 25. );
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solid_face->setTessellationSteps( 3 );
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#else
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solid_face = new OGLFT::Monochrome( argv[1], point_size );
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#endif
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solid_face->setHorizontalJustification( OGLFT::Face::CENTER );
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solid_face->setForegroundColor( 1., .5, 0., 1. );
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monochrome_texture_face = new OGLFT::MonochromeTexture( argv[1], point_size );
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monochrome_texture_face->setHorizontalJustification( OGLFT::Face::CENTER );
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monochrome_texture_face->setForegroundColor( 0., .5, .75, 1. );
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grayscale_texture_face = new OGLFT::GrayscaleTexture( argv[1], point_size );
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grayscale_texture_face->setHorizontalJustification( OGLFT::Face::CENTER );
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grayscale_texture_face->setForegroundColor( 0.9, .65, .9, 1. );
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grayscale_texture_face->setBackgroundColor( 0.5, .5, .75, 0.3 );
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translucent_texture_face = new OGLFT::TranslucentTexture( argv[1], point_size );
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translucent_texture_face->setHorizontalJustification( OGLFT::Face::CENTER );
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translucent_texture_face->setForegroundColor( 0.75, 1., .75, 1. );
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// Set various general parameters which don't affect performance (yet).
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glClearColor( .75, .75, .75, 1. );
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glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
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#if defined(GL_RASTER_POSITION_UNCLIPPED_IBM)
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glEnable( GL_RASTER_POSITION_UNCLIPPED_IBM );
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#endif
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glEnable( GL_LIGHT0 );
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glDisable( GL_DITHER );
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glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
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glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE );
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}
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static void reshape ( int width, int height )
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{
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viewport_width = width;
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viewport_height = height;
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glViewport( 0, 0, viewport_width, viewport_height );
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glMatrixMode( GL_PROJECTION );
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glLoadIdentity();
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glOrtho( 0, viewport_width, 0, viewport_height, -100, 100 );
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glMatrixMode( GL_MODELVIEW );
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glLoadIdentity();
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dy = viewport_height / ( 9 + 1 );
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}
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static void reset ( void )
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{
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monochrome_face->setCharacterRotationZ( 0 );
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monochrome_face->setStringRotation( 0 );
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grayscale_face->setCharacterRotationZ( 0 );
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grayscale_face->setStringRotation( 0 );
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translucent_face->setCharacterRotationZ( 0 );
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translucent_face->setStringRotation( 0 );
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outline_face->setCharacterRotationX( 0 );
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outline_face->setCharacterRotationY( 0 );
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outline_face->setCharacterRotationZ( 0 );
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outline_face->setStringRotation( 0 );
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filled_face->setCharacterRotationX( 0 );
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filled_face->setCharacterRotationY( 0 );
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filled_face->setCharacterRotationZ( 0 );
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filled_face->setStringRotation( 0 );
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#ifndef OGLFT_NO_SOLID
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solid_face->setCharacterRotationX( 25. );
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solid_face->setCharacterRotationY( 25. );
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#endif
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solid_face->setCharacterRotationZ( 0 );
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solid_face->setStringRotation( 0 );
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monochrome_texture_face->setCharacterRotationX( 0 );
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monochrome_texture_face->setCharacterRotationY( 0 );
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monochrome_texture_face->setCharacterRotationZ( 0 );
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monochrome_texture_face->setStringRotation( 0 );
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grayscale_texture_face->setCharacterRotationX( 0 );
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grayscale_texture_face->setCharacterRotationY( 0 );
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grayscale_texture_face->setCharacterRotationZ( 0 );
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grayscale_texture_face->setStringRotation( 0 );
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translucent_texture_face->setCharacterRotationX( 0 );
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translucent_texture_face->setCharacterRotationY( 0 );
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translucent_texture_face->setCharacterRotationZ( 0 );
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translucent_texture_face->setStringRotation( 0 );
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glViewport( 0, 0, viewport_width, viewport_height );
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glMatrixMode( GL_PROJECTION );
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glLoadIdentity();
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glOrtho( 0, viewport_width, 0, viewport_height, -100, 100 );
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glMatrixMode( GL_MODELVIEW );
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glLoadIdentity();
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}
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static void char_rotate_x ( float dx )
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{
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outline_face->setCharacterRotationX( outline_face->characterRotationX()+dx );
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filled_face->setCharacterRotationX( filled_face->characterRotationX()+dx );
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#ifndef OGLFT_NO_SOLID
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solid_face->setCharacterRotationX( solid_face->characterRotationX()+dx );
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#endif
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monochrome_texture_face->setCharacterRotationX(
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monochrome_texture_face->characterRotationX()+dx );
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grayscale_texture_face->setCharacterRotationX(
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grayscale_texture_face->characterRotationX()+dx );
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translucent_texture_face->setCharacterRotationX(
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translucent_texture_face->characterRotationX()+dx );
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}
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static void char_rotate_y ( float dy )
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{
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outline_face->setCharacterRotationY( outline_face->characterRotationY()+dy );
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filled_face->setCharacterRotationY( filled_face->characterRotationY()+dy );
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#ifndef OGLFT_NO_SOLID
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solid_face->setCharacterRotationY( solid_face->characterRotationY()+dy );
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#endif
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monochrome_texture_face->setCharacterRotationY(
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monochrome_texture_face->characterRotationY()+dy );
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grayscale_texture_face->setCharacterRotationY(
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grayscale_texture_face->characterRotationY()+dy );
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translucent_texture_face->setCharacterRotationY(
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translucent_texture_face->characterRotationY()+dy );
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}
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static void char_rotate_z ( float dz )
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{
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monochrome_face->setCharacterRotationZ( monochrome_face->characterRotationZ()+dz );
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grayscale_face->setCharacterRotationZ( grayscale_face->characterRotationZ()+dz );
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translucent_face->setCharacterRotationZ( translucent_face->characterRotationZ()+dz );
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outline_face->setCharacterRotationZ( outline_face->characterRotationZ()+dz );
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filled_face->setCharacterRotationZ( filled_face->characterRotationZ()+dz );
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solid_face->setCharacterRotationZ( solid_face->characterRotationZ()+dz );
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monochrome_texture_face->setCharacterRotationZ( monochrome_texture_face->characterRotationZ()+dz );
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grayscale_texture_face->setCharacterRotationZ( grayscale_texture_face->characterRotationZ()+dz );
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translucent_texture_face->setCharacterRotationZ( translucent_texture_face->characterRotationZ()+dz );
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}
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static void string_rotate ( float dz )
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{
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monochrome_face->setStringRotation( monochrome_face->stringRotation()+dz );
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grayscale_face->setStringRotation( grayscale_face->stringRotation()+dz );
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translucent_face->setStringRotation( translucent_face->stringRotation()+dz );
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outline_face->setStringRotation( outline_face->stringRotation()+dz );
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filled_face->setStringRotation( filled_face->stringRotation()+dz );
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solid_face->setStringRotation( solid_face->stringRotation()+dz );
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monochrome_texture_face->setStringRotation( monochrome_texture_face->stringRotation()+dz );
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grayscale_texture_face->setStringRotation( grayscale_texture_face->stringRotation()+dz );
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translucent_texture_face->setStringRotation( translucent_texture_face->stringRotation()+dz );
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}
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static void display ( void )
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{
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glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
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glPushMatrix();
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// Draw everything centered
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glTranslatef( viewport_width/2., 0., 0. );
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commands_face->draw( 0., 0., commands );
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glTranslatef( 0., dy, 0. );
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monochrome_face->draw( 0., 0., text );
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glTranslatef( 0., dy, 0. );
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grayscale_face->draw( 0., 0., text );
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glEnable( GL_BLEND );
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glTranslatef( 0., dy, 0. );
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translucent_face->draw( 0., 0., text );
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glDisable( GL_BLEND );
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glTranslatef( 0., dy, 0. );
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outline_face->draw( 0., 0., text );
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glTranslatef( 0., dy, 0. );
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filled_face->draw( 0., 0., text );
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glTranslatef( 0., dy, 0. );
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#ifndef OGLFT_NO_SOLID
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glEnable( GL_LIGHTING );
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glEnable( GL_DEPTH_TEST );
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glEnable( GL_COLOR_MATERIAL );
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solid_face->draw( 0., 0., text );
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glDisable( GL_COLOR_MATERIAL );
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glDisable( GL_DEPTH_TEST );
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glDisable( GL_LIGHTING );
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#else
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solid_face->draw( 0., 0., "<Note: Solid face not available in library>" );
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#endif
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glEnable( GL_TEXTURE_2D );
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glEnable( GL_BLEND );
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glEnable( GL_DEPTH_TEST );
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glTranslatef( 0., dy, 0. );
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monochrome_texture_face->draw( 0., 0., text );
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glTranslatef( 0., dy, 0. );
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grayscale_texture_face->draw( 0., 0., text );
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glTranslatef( 0., dy, 0. );
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translucent_texture_face->draw( 0., 0., text );
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glDisable( GL_DEPTH_TEST );
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glDisable( GL_BLEND );
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glDisable( GL_TEXTURE_2D );
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glPopMatrix();
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glutSwapBuffers();
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}
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static void key ( unsigned char key, int /*x*/, int /*y*/ )
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{
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switch ( key ) {
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case 'a':
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char_rotate_x( -4 ); break;
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case 'A':
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char_rotate_x( 4 ); break;
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case 's':
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char_rotate_y( -4 ); break;
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case 'S':
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char_rotate_y( 4 ); break;
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case 'd':
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char_rotate_z( -4 ); break;
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case 'D':
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char_rotate_z( 4 ); break;
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case 'f':
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string_rotate( -4 ); break;
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case 'F':
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string_rotate( 4 ); break;
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case 'r': case 'R':
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reset(); break;
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case 27:
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exit( 0 );
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default:
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return;
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}
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glutPostRedisplay();
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}
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static void done ( void )
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{
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delete monochrome_face;
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delete grayscale_face;
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delete translucent_face;
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delete outline_face;
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delete filled_face;
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delete solid_face;
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delete monochrome_texture_face;
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delete grayscale_texture_face;
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delete translucent_texture_face;
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}
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int main ( int argc, char* argv[] )
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{
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if ( argc != 2 ) {
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std::cerr << argv[0] << USAGE << std::endl;
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return 1;
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}
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glutInit( &argc, argv );
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glutInitWindowSize( 500, 500 );
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glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH );
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glutCreateWindow( argv[0] );
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init( argc, argv );
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atexit( done );
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glutReshapeFunc( reshape );
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glutDisplayFunc( display );
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glutKeyboardFunc( key );
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glutMainLoop();
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return 0;
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}
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