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flightgear/src/Scenery/scenery.cxx

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C++-ifying.
1998-10-16 23:26:44 +00:00
// scenery.cxx -- data structures and routines for managing scenery.
//
// Written by Curtis Olson, started May 1997.
//
// Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of the
// License, or (at your option) any later version.
//
// This program 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
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// $Id$
Initial revision.
1997-06-27 02:26:30 +00:00
Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H" Tweaked the scenery file extentions to be "file.obj" (uncompressed) or "file.obz" (compressed.)
1998-04-24 00:51:07 +00:00
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
Converting to Gnu autoconf system.
1998-04-03 22:09:02 +00:00
Changed naming scheme of basic shared structures.
1997-08-27 03:29:38 +00:00
#include <stdio.h>
Doing a bit of reorganizing and house cleaning.
1997-08-22 21:34:32 +00:00
#include <string.h>
One more pass at a reorg.
2000-02-16 23:01:03 +00:00
#include <simgear/debug/logstream.hxx>
Moved random ground cover object management code (userdata.[ch]xx) over to SimGear.
2003-05-28 20:29:05 +00:00
#include <simgear/scene/tgdb/userdata.hxx>
Code reorganization.
2000-02-15 03:30:01 +00:00
This set of changes touches a *lot* of files. The main goal here is to fix startup sequence problems where we initialize the FDM before we know the desired starting altitude. These changes delay fdm initialization until the local tile has been loaded and we can do a real intersection and find the true ground elevation. In order to do this, I depend more on the property manager as glue, rather than the FGInterface. There are some glitches still when switching to a new airport or reseting the sim. I will work on addressing these, but I need to commit the changes so far to keep in sync with other developers.
2001-10-28 16:16:30 +00:00
#include <Main/fg_props.hxx>
Load and manage multiple textures defined in the Materials library. Boost max material fagments for each material property to 800. Multiple texture support when rendering.
1998-06-17 21:36:39 +00:00
#include "scenery.hxx"
More twiddling with the Scenery Management system.
1997-06-29 21:16:47 +00:00
This set of changes touches a *lot* of files. The main goal here is to fix startup sequence problems where we initialize the FDM before we know the desired starting altitude. These changes delay fdm initialization until the local tile has been loaded and we can do a real intersection and find the true ground elevation. In order to do this, I depend more on the property manager as glue, rather than the FGInterface. There are some glitches still when switching to a new airport or reseting the sim. I will work on addressing these, but I need to commit the changes so far to keep in sync with other developers.
2001-10-28 16:16:30 +00:00
// Scenery Management system
FGScenery::FGScenery() {
SG-ified logstream.
2001-03-24 06:03:11 +00:00
SG_LOG( SG_TERRAIN, SG_INFO, "Initializing scenery subsystem" );
Integrated new event manager with subsystem initializations.
1997-12-30 20:47:34 +00:00
This set of changes touches a *lot* of files. The main goal here is to fix startup sequence problems where we initialize the FDM before we know the desired starting altitude. These changes delay fdm initialization until the local tile has been loaded and we can do a real intersection and find the true ground elevation. In order to do this, I depend more on the property manager as glue, rather than the FGInterface. There are some glitches still when switching to a new airport or reseting the sim. I will work on addressing these, but I need to commit the changes so far to keep in sync with other developers.
2001-10-28 16:16:30 +00:00
center = Point3D(0.0);
cur_elev = -9999;
}
Moved some scenery component initialization into FGScenery.
2002-05-14 06:08:28 +00:00
This set of changes touches a *lot* of files. The main goal here is to fix startup sequence problems where we initialize the FDM before we know the desired starting altitude. These changes delay fdm initialization until the local tile has been loaded and we can do a real intersection and find the true ground elevation. In order to do this, I depend more on the property manager as glue, rather than the FGInterface. There are some glitches still when switching to a new airport or reseting the sim. I will work on addressing these, but I need to commit the changes so far to keep in sync with other developers.
2001-10-28 16:16:30 +00:00
// Initialize the Scenery Management system
FGScenery::~FGScenery() {
}
Moved some scenery component initialization into FGScenery.
2002-05-14 06:08:28 +00:00
This set of changes touches a *lot* of files. The main goal here is to fix startup sequence problems where we initialize the FDM before we know the desired starting altitude. These changes delay fdm initialization until the local tile has been loaded and we can do a real intersection and find the true ground elevation. In order to do this, I depend more on the property manager as glue, rather than the FGInterface. There are some glitches still when switching to a new airport or reseting the sim. I will work on addressing these, but I need to commit the changes so far to keep in sync with other developers.
2001-10-28 16:16:30 +00:00
void FGScenery::init() {
Moved some scenery component initialization into FGScenery.
2002-05-14 06:08:28 +00:00
// Scene graph root
scene_graph = new ssgRoot;
scene_graph->setName( "Scene" );
// Terrain branch
terrain_branch = new ssgBranch;
terrain_branch->setName( "Terrain" );
scene_graph->addKid( terrain_branch );
models_branch = new ssgBranch;
models_branch->setName( "Models" );
scene_graph->addKid( models_branch );
aircraft_branch = new ssgBranch;
aircraft_branch->setName( "Aircraft" );
scene_graph->addKid( aircraft_branch );
// Lighting
Begin work on rendering runway lights using environment maps. The basics are now working. A runway light is defined by a point and a direction. The point and direction are combined with the local up vector to create a small triangle orthogonal to the direction. The two ficticous corners of the triangle are given an alpha value of zero, the orignal corner is given an alpha of one. The triangle is drawn in glPolygonMode(GL_FRONT, GL_POINT) mode which means only the corner points are drawn, and since two have alpha=0 only the original point is drawn. This is a long way to go to draw a point, but it ensures that the point is only visible within 90 degrees of the light direction, behind the light it is not visible. This is still a long way to get to drawing a point, but we use an environement map, with the direction vector as the normal to mimic a light that is brightest when viewed head on and dimmest when viewed perpendicularly or disappears when viewed from behind. - warning, there is a bug in how the current runway light direction vector is calculated which will adversely effect runway lighting. The airports should be regenerated in order to fix this problem.
2002-10-06 03:53:19 +00:00
gnd_lights_root = new ssgRoot;
gnd_lights_root->setName( "Ground Lighting Root" );
Moved some scenery component initialization into FGScenery.
2002-05-14 06:08:28 +00:00
Fix a small mistake in the scene graph arrangement for vasi lights.
2004-01-11 19:45:29 +00:00
vasi_lights_root = new ssgRoot;
vasi_lights_root->setName( "VASI/PAPI Lighting Root" );
Begin work on rendering runway lights using environment maps. The basics are now working. A runway light is defined by a point and a direction. The point and direction are combined with the local up vector to create a small triangle orthogonal to the direction. The two ficticous corners of the triangle are given an alpha value of zero, the orignal corner is given an alpha of one. The triangle is drawn in glPolygonMode(GL_FRONT, GL_POINT) mode which means only the corner points are drawn, and since two have alpha=0 only the original point is drawn. This is a long way to go to draw a point, but it ensures that the point is only visible within 90 degrees of the light direction, behind the light it is not visible. This is still a long way to get to drawing a point, but we use an environement map, with the direction vector as the normal to mimic a light that is brightest when viewed head on and dimmest when viewed perpendicularly or disappears when viewed from behind. - warning, there is a bug in how the current runway light direction vector is calculated which will adversely effect runway lighting. The airports should be regenerated in order to fix this problem.
2002-10-06 03:53:19 +00:00
rwy_lights_root = new ssgRoot;
rwy_lights_root->setName( "Runway Lighting Root" );
Put taxiway lights in their own scene graph so we can adjust their brightness (or fog punch through) independently from the ground or runway lighting.
2002-11-01 21:56:48 +00:00
taxi_lights_root = new ssgRoot;
taxi_lights_root->setName( "Taxi Lighting Root" );
Moved random ground cover object management code (userdata.[ch]xx) over to SimGear.
2003-05-28 20:29:05 +00:00
// Initials values needed by the draw-time object loader
sgUserDataInit( globals->get_model_lib(), globals->get_fg_root(),
globals->get_props(), globals->get_sim_time_sec() );
This set of changes touches a *lot* of files. The main goal here is to fix startup sequence problems where we initialize the FDM before we know the desired starting altitude. These changes delay fdm initialization until the local tile has been loaded and we can do a real intersection and find the true ground elevation. In order to do this, I depend more on the property manager as glue, rather than the FGInterface. There are some glitches still when switching to a new airport or reseting the sim. I will work on addressing these, but I need to commit the changes so far to keep in sync with other developers.
2001-10-28 16:16:30 +00:00
}
Moved some scenery component initialization into FGScenery.
2002-05-14 06:08:28 +00:00
Major overhaul: - changed FGSubsystem::update(int) to FGSubsystem::update(delta_time_sec); the argument is now delta time in seconds rather than milliseconds - added FGSubsystem::suspend(), FGSubsystem::suspend(bool), FGSubsystem::resume(), and FGSubsystem::is_suspended(), all with default implementations; is_suspended takes account of the master freeze as well as the subsystem's individual suspended state - the FDMs now use the delta time argument the same as the rest of FlightGear; formerly, main.cxx made a special case and passed a multiloop argument - FDMs now calculate multiloop internally instead of relying on main.cxx There are probably some problems -- I've done basic testing with the major FDMs and subsystems, but we'll probably need a few weeks to sniff out bugs.
2002-05-11 16:28:50 +00:00
void FGScenery::update(double dt) {
This set of changes touches a *lot* of files. The main goal here is to fix startup sequence problems where we initialize the FDM before we know the desired starting altitude. These changes delay fdm initialization until the local tile has been loaded and we can do a real intersection and find the true ground elevation. In order to do this, I depend more on the property manager as glue, rather than the FGInterface. There are some glitches still when switching to a new airport or reseting the sim. I will work on addressing these, but I need to commit the changes so far to keep in sync with other developers.
2001-10-28 16:16:30 +00:00
}
Moved some scenery component initialization into FGScenery.
2002-05-14 06:08:28 +00:00
This set of changes touches a *lot* of files. The main goal here is to fix startup sequence problems where we initialize the FDM before we know the desired starting altitude. These changes delay fdm initialization until the local tile has been loaded and we can do a real intersection and find the true ground elevation. In order to do this, I depend more on the property manager as glue, rather than the FGInterface. There are some glitches still when switching to a new airport or reseting the sim. I will work on addressing these, but I need to commit the changes so far to keep in sync with other developers.
2001-10-28 16:16:30 +00:00
void FGScenery::bind() {
fgTie("/environment/ground-elevation-m", this,
&FGScenery::get_cur_elev, &FGScenery::set_cur_elev);
}
Beginning initial terrain texturing experiments.
1998-03-14 00:30:50 +00:00
Moved some scenery component initialization into FGScenery.
2002-05-14 06:08:28 +00:00
This set of changes touches a *lot* of files. The main goal here is to fix startup sequence problems where we initialize the FDM before we know the desired starting altitude. These changes delay fdm initialization until the local tile has been loaded and we can do a real intersection and find the true ground elevation. In order to do this, I depend more on the property manager as glue, rather than the FGInterface. There are some glitches still when switching to a new airport or reseting the sim. I will work on addressing these, but I need to commit the changes so far to keep in sync with other developers.
2001-10-28 16:16:30 +00:00
void FGScenery::unbind() {
fgUntie("/environment/ground-elevation-m");
Initial revision.
1997-06-27 02:26:30 +00:00
}
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