1 // splash.cxx -- draws the initial splash screen
3 // Written by Curtis Olson, started July 1998. (With a little looking
4 // at Freidemann's panel code.) :-)
6 // Copyright (C) 1997 Michele F. America - nomimarketing@mail.telepac.pt
8 // This program is free software; you can redistribute it and/or
9 // modify it under the terms of the GNU General Public License as
10 // published by the Free Software Foundation; either version 2 of the
11 // License, or (at your option) any later version.
13 // This program is distributed in the hope that it will be useful, but
14 // WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 // General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the Free Software
20 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 #ifdef SG_MATH_EXCEPTION_CLASH
41 #include <simgear/debug/logstream.hxx>
42 #include <simgear/screen/texture.hxx>
43 #include <simgear/math/sg_random.h>
44 #include <simgear/misc/sg_path.hxx>
46 #include "globals.hxx"
47 #include "fg_props.hxx"
51 static SGTexture splash;
54 // Initialize the splash screen
55 void fgSplashInit ( void ) {
56 SG_LOG( SG_GENERAL, SG_INFO, "Initializing splash screen" );
60 // load in the texture data
61 int num = (int)(sg_random() * 4.0 + 1.0);
63 sprintf(num_str, "%d", num);
65 SGPath tpath( globals->get_fg_root() );
66 tpath.append( "Textures/Splash" );
67 tpath.concat( num_str );
68 tpath.concat( ".rgb" );
70 splash.read_rgb_texture(tpath.c_str());
74 SGPath fg_tpath = tpath;
75 fg_tpath.concat( ".gz" );
77 splash.read_rgb_texture(fg_tpath.c_str());
78 if ( !splash.usable() )
80 SG_LOG( SG_GENERAL, SG_ALERT,
81 "Error in loading splash screen texture " << tpath.str() );
90 // Update the splash screen with progress specified from 0.0 to 1.0
91 void fgSplashUpdate ( double progress, float alpha ) {
92 int xmin, ymin, xmax, ymax;
96 if ( !fgGetInt("/sim/startup/xsize")
97 || !fgGetInt("/sim/startup/ysize") ) {
101 xmin = (fgGetInt("/sim/startup/xsize") - xsize) / 2;
104 ymin = (fgGetInt("/sim/startup/ysize") - ysize) / 2;
107 glMatrixMode(GL_PROJECTION);
110 gluOrtho2D(0, fgGetInt("/sim/startup/xsize"),
111 0, fgGetInt("/sim/startup/ysize"));
112 glMatrixMode(GL_MODELVIEW);
116 glDisable(GL_DEPTH_TEST);
117 glDisable(GL_LIGHTING);
119 // draw the background
120 glColor4f( 0.0, 0.0, 0.0, alpha );
122 glVertex2f(0.0, 0.0);
123 glVertex2f(fgGetInt("/sim/startup/xsize"), 0.0);
124 glVertex2f(fgGetInt("/sim/startup/xsize"), fgGetInt("/sim/startup/ysize"));
125 glVertex2f(0.0, fgGetInt("/sim/startup/ysize"));
129 glEnable(GL_TEXTURE_2D);
131 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
133 glColor4f( 1.0, 1.0, 1.0, alpha );
135 glTexCoord2f(0.0, 0.0); glVertex2f(xmin, ymin);
136 glTexCoord2f(1.0, 0.0); glVertex2f(xmax, ymin);
137 glTexCoord2f(1.0, 1.0); glVertex2f(xmax, ymax);
138 glTexCoord2f(0.0, 1.0); glVertex2f(xmin, ymax);
143 glEnable(GL_DEPTH_TEST);
144 glEnable(GL_LIGHTING);
145 glDisable(GL_TEXTURE_2D);
147 glMatrixMode(GL_PROJECTION);
149 glMatrixMode(GL_MODELVIEW);