#include <string.h>
+#include <Aircraft/aircraft.hxx>
#include <Debug/fg_debug.h>
#include <Include/fg_constants.h>
-#include <Include/general.h>
+#include <Main/options.hxx>
#include <Main/views.hxx>
-#include <Math/fg_geodesy.h>
+#include <Math/fg_geodesy.hxx>
#include <Math/interpolater.hxx>
#include <Math/mat3.h>
-#include <Math/polar.h>
+#include <Math/polar3d.hxx>
#include "fg_time.hxx"
#include "light.hxx"
fgLIGHT cur_light_params;
-static fgINTERPTABLE *ambient_tbl;
-static fgINTERPTABLE *diffuse_tbl;
-static fgINTERPTABLE *sky_tbl;
+
+// Constructor
+fgLIGHT::fgLIGHT( void ) {
+}
// initialize lighting tables
-void fgLightInit( void ) {
- fgGENERAL *g;
- char path[256];
+void fgLIGHT::Init( void ) {
+ string path, ambient, diffuse, sky;
fgPrintf( FG_EVENT, FG_INFO,
"Initializing Lighting interpolation tables.\n" );
- g = &general;
-
// build the path name to the ambient lookup table
- path[0] = '\0';
- strcat(path, g->root_dir);
- strcat(path, "/Scenery/");
- strcat(path, "Ambient.table");
+ path = current_options.get_fg_root();
+ ambient = path + "/Lighting/ambient";
+ diffuse = path + "/Lighting/diffuse";
+ sky = path + "/Lighting/sky";
+
// initialize ambient table
- ambient_tbl = new fgINTERPTABLE(path);
+ ambient_tbl = new fgINTERPTABLE((char *)ambient.c_str());
- // build the path name to the diffuse lookup table
- path[0] = '\0';
- strcat(path, g->root_dir);
- strcat(path, "/Scenery/");
- strcat(path, "Diffuse.table");
// initialize diffuse table
- diffuse_tbl = new fgINTERPTABLE(path);
+ diffuse_tbl = new fgINTERPTABLE((char *)diffuse.c_str());
- // build the path name to the sky lookup table
- path[0] = '\0';
- strcat(path, g->root_dir);
- strcat(path, "/Scenery/");
- strcat(path, "Sky.table");
// initialize sky table
- sky_tbl = new fgINTERPTABLE(path);
+ sky_tbl = new fgINTERPTABLE((char *)sky.c_str());
}
// update lighting parameters based on current sun position
-void fgLightUpdate( void ) {
- struct fgLIGHT *l;
- struct fgTIME *t;
- struct fgVIEW *v;
- /* if the 4th field is 0.0, this specifies a direction ... */
+void fgLIGHT::Update( void ) {
+ fgFLIGHT *f;
+ fgTIME *t;
+ fgVIEW *v;
+ // if the 4th field is 0.0, this specifies a direction ...
GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
- /* base sky color */
+ // base sky color
GLfloat base_sky_color[4] = {0.60, 0.60, 0.90, 1.0};
- /* base fog color */
- GLfloat base_fog_color[4] = {1.00, 1.00, 1.00, 1.0};
+ // base fog color
+ GLfloat base_fog_color[4] = {0.90, 0.90, 1.00, 1.0};
double deg, ambient, diffuse, sky_brightness;
- l = &cur_light_params;
+ f = current_aircraft.flight;
t = &cur_time_params;
v = ¤t_view;
fgPrintf( FG_EVENT, FG_INFO, "Updating light parameters.\n" );
- /* calculate lighting parameters based on sun's relative angle to
- * local up */
+ // calculate lighting parameters based on sun's relative angle to
+ // local up
- deg = l->sun_angle * 180.0 / FG_PI;
+ deg = sun_angle * 180.0 / FG_PI;
fgPrintf( FG_EVENT, FG_INFO, " Sun angle = %.2f.\n", deg );
ambient = ambient_tbl->interpolate( deg );
// if ( diffuse < 0.0 ) { diffuse = 0.0; }
// if ( sky_brightness < 0.1 ) { sky_brightness = 0.1; }
- l->scene_ambient[0] = white[0] * ambient;
- l->scene_ambient[1] = white[1] * ambient;
- l->scene_ambient[2] = white[2] * ambient;
-
- l->scene_diffuse[0] = white[0] * diffuse;
- l->scene_diffuse[1] = white[1] * diffuse;
- l->scene_diffuse[2] = white[2] * diffuse;
-
- /* set fog color */
- // l->fog_color[0] = base_fog_color[0] * (ambient + diffuse);
- // l->fog_color[1] = base_fog_color[1] * (ambient + diffuse);
- // l->fog_color[2] = base_fog_color[2] * (ambient + diffuse);
- // l->fog_color[3] = base_fog_color[3];
- l->fog_color[0] = base_fog_color[0] * sky_brightness;
- l->fog_color[1] = base_fog_color[1] * sky_brightness;
- l->fog_color[2] = base_fog_color[2] * sky_brightness;
- l->fog_color[3] = base_fog_color[3];
-
- /* set sky color */
- l->sky_color[0] = base_sky_color[0] * sky_brightness;
- l->sky_color[1] = base_sky_color[1] * sky_brightness;
- l->sky_color[2] = base_sky_color[2] * sky_brightness;
- l->sky_color[3] = base_sky_color[3];
+ scene_ambient[0] = white[0] * ambient;
+ scene_ambient[1] = white[1] * ambient;
+ scene_ambient[2] = white[2] * ambient;
+
+ scene_diffuse[0] = white[0] * diffuse;
+ scene_diffuse[1] = white[1] * diffuse;
+ scene_diffuse[2] = white[2] * diffuse;
+
+ // set sky color
+ sky_color[0] = base_sky_color[0] * sky_brightness;
+ sky_color[1] = base_sky_color[1] * sky_brightness;
+ sky_color[2] = base_sky_color[2] * sky_brightness;
+ sky_color[3] = base_sky_color[3];
+
+ // set fog color
+ fog_color[0] = base_fog_color[0] * sky_brightness;
+ fog_color[1] = base_fog_color[1] * sky_brightness;
+ fog_color[2] = base_fog_color[2] * sky_brightness;
+ fog_color[3] = base_fog_color[3];
+}
+
+
+// calculate fog color adjusted for sunrise/sunset effects
+void fgLIGHT::UpdateAdjFog( void ) {
+ fgFLIGHT *f;
+ fgVIEW *v;
+ double sun_angle_deg, rotation, param1[3], param2[3];
+
+ f = current_aircraft.flight;
+ v = ¤t_view;
+
+ fgPrintf( FG_EVENT, FG_DEBUG, "Updating adjusted fog parameters.\n" );
+
+ // set fog color (we'll try to match the sunset color in the
+ // direction we are looking
+
+ // first determine the difference between our view angle and local
+ // direction to the sun
+ rotation = -(sun_rotation + FG_PI) - (FG_Psi - v->view_offset) ;
+ while ( rotation < 0 ) {
+ rotation += FG_2PI;
+ }
+ while ( rotation > FG_2PI ) {
+ rotation -= FG_2PI;
+ }
+ rotation *= RAD_TO_DEG;
+ // fgPrintf( FG_EVENT, FG_INFO,
+ // " View to sun difference in degrees = %.2f\n", rotation);
+
+ // next check if we are in a sunset/sunrise situation
+ sun_angle_deg = sun_angle * RAD_TO_DEG;
+ if ( (sun_angle_deg > 80.0) && (sun_angle_deg < 100.0) ) {
+ /* 0.0 - 0.6 */
+ param1[0] = (10.0 - fabs(90.0 - sun_angle_deg)) / 10.0;
+ param1[1] = (10.0 - fabs(90.0 - sun_angle_deg)) / 50.0;
+ param1[2] = 0.0;
+ } else {
+ param1[0] = param1[1] = param1[2] = 0.0;
+ }
+
+ if ( rotation - 180.0 <= 0.0 ) {
+ param2[0] = param1[0] * (180.0 - rotation) / 180.0;
+ param2[1] = param1[1] * (180.0 - rotation) / 180.0;
+ param2[2] = param1[2] * (180.0 - rotation) / 180.0;
+ // printf("param1[0] = %.2f param2[0] = %.2f\n", param1[0], param2[0]);
+ } else {
+ param2[0] = param1[0] * (rotation - 180.0) / 180.0;
+ param2[1] = param1[1] * (rotation - 180.0) / 180.0;
+ param2[2] = param1[2] * (rotation - 180.0) / 180.0;
+ // printf("param1[0] = %.2f param2[0] = %.2f\n", param1[0], param2[0]);
+ }
+
+ adj_fog_color[0] = fog_color[0] + param2[0];
+ if ( adj_fog_color[0] > 1.0 ) { adj_fog_color[0] = 1.0; }
+
+ adj_fog_color[1] = fog_color[1] + param2[1];
+ if ( adj_fog_color[1] > 1.0 ) { adj_fog_color[1] = 1.0; }
+
+ adj_fog_color[2] = fog_color[2] + param2[2];
+ if ( adj_fog_color[2] > 1.0 ) { adj_fog_color[2] = 1.0; }
+
+ adj_fog_color[3] = fog_color[3];
+}
+
+
+// Destructor
+fgLIGHT::~fgLIGHT( void ) {
}
// $Log$
+// Revision 1.18 1998/10/17 01:34:30 curt
+// C++ ifying ...
+//
+// Revision 1.17 1998/08/29 13:11:33 curt
+// Bernie Bright writes:
+// I've created some new classes to enable pointers-to-functions and
+// pointers-to-class-methods to be treated like objects. These objects
+// can be registered with fgEVENT_MGR.
+//
+// File "Include/fg_callback.hxx" contains the callback class defns.
+//
+// Modified fgEVENT and fgEVENT_MGR to use the callback classes. Also
+// some minor tweaks to STL usage.
+//
+// Added file "Include/fg_stl_config.h" to deal with STL portability
+// issues. I've added an initial config for egcs (and probably gcc-2.8.x).
+// I don't have access to Visual C++ so I've left that for someone else.
+// This file is influenced by the stl_config.h file delivered with egcs.
+//
+// Added "Include/auto_ptr.hxx" which contains an implementation of the
+// STL auto_ptr class which is not provided in all STL implementations
+// and is needed to use the callback classes.
+//
+// Deleted fgLightUpdate() which was just a wrapper to call
+// fgLIGHT::Update().
+//
+// Modified fg_init.cxx to register two method callbacks in place of the
+// old wrapper functions.
+//
+// Revision 1.16 1998/08/27 17:02:11 curt
+// Contributions from Bernie Bright <bbright@c031.aone.net.au>
+// - use strings for fg_root and airport_id and added methods to return
+// them as strings,
+// - inlined all access methods,
+// - made the parsing functions private methods,
+// - deleted some unused functions.
+// - propogated some of these changes out a bit further.
+//
+// Revision 1.15 1998/08/25 20:53:33 curt
+// Shuffled $FG_ROOT file layout.
+//
+// Revision 1.14 1998/08/06 12:47:22 curt
+// Adjusted dusk/dawn lighting ...
+//
+// Revision 1.13 1998/07/24 21:42:26 curt
+// Output message tweaks.
+//
+// Revision 1.12 1998/07/22 21:45:38 curt
+// fg_time.cxx: Removed call to ctime() in a printf() which should be harmless
+// but seems to be triggering a bug.
+// light.cxx: Added code to adjust fog color based on sunrise/sunset effects
+// and view orientation. This is an attempt to match the fog color to the
+// sky color in the center of the screen. You see discrepancies at the
+// edges, but what else can be done?
+// sunpos.cxx: Caculate local direction to sun here. (what compass direction
+// do we need to face to point directly at sun)
+//
+// Revision 1.11 1998/07/13 21:02:08 curt
+// Wrote access functions for current fgOPTIONS.
+//
+// Revision 1.10 1998/07/08 14:48:38 curt
+// polar3d.h renamed to polar3d.hxx
+//
+// Revision 1.9 1998/05/29 20:37:51 curt
+// Renamed <Table>.table to be <Table> so we can add a .gz under DOS.
+//
+// Revision 1.8 1998/05/20 20:54:16 curt
+// Converted fgLIGHT to a C++ class.
+//
+// Revision 1.7 1998/05/13 18:26:50 curt
+// Root path info moved to fgOPTIONS.
+//
+// Revision 1.6 1998/05/11 18:18:51 curt
+// Made fog color slightly bluish.
+//
+// Revision 1.5 1998/05/03 00:48:38 curt
+// polar.h -> polar3d.h
+//
+// Revision 1.4 1998/04/28 01:22:18 curt
+// Type-ified fgTIME and fgVIEW.
+//
+// Revision 1.3 1998/04/26 05:10:04 curt
+// "struct fgLIGHT" -> "fgLIGHT" because fgLIGHT is typedef'd.
+//
// Revision 1.2 1998/04/24 00:52:30 curt
// Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
// Fog color fixes.
// C++ - ifiing the code a bit.
// Starting to reorginize some of the lighting calcs to use a table lookup.
//
-//
projects / flightgear.git / blobdiff