Corrected typo ("Celsius" rather than "Celcius") and added to cast to

[flightgear.git] / src / Time / light.cxx

diff --git a/src/Time/light.cxx b/src/Time/light.cxx
index de37b91490d207586b6445bda016b20d8e5ae6f8..fa5617d37e21b7094b1334643dffd11d168855e5 100644 (file)
--- a/src/Time/light.cxx
+++ b/src/Time/light.cxx
@@ -31,32 +31,32 @@
 #endif
 
 #include <GL/glut.h>
-#include <simgear/xgl/xgl.h>
+#include <GL/gl.h>
 
 #include <simgear/compiler.h>
 
-#ifdef FG_MATH_EXCEPTION_CLASH
+#ifdef SG_MATH_EXCEPTION_CLASH
 #  define exception c_exception
 #endif
 
-#ifdef FG_HAVE_STD_INCLUDES
+#ifdef SG_HAVE_STD_INCLUDES
 #  include <cmath>
 #else
 #  include <math.h>
 #endif
 
 #include <string>
-FG_USING_STD(string);
+SG_USING_STD(string);
 
 #include <simgear/constants.h>
 #include <simgear/debug/logstream.hxx>
 #include <simgear/math/interpolater.hxx>
 #include <simgear/math/polar3d.hxx>
-#include <simgear/misc/fgpath.hxx>
+#include <simgear/misc/sg_path.hxx>
 
 #include <Aircraft/aircraft.hxx>
 #include <Main/globals.hxx>
-#include <Main/options.hxx>
+#include <Main/viewer.hxx>
 
 #include "light.hxx"
 #include "sunpos.hxx"
@@ -72,26 +72,26 @@ fgLIGHT::fgLIGHT( void ) {
 
 // initialize lighting tables
 void fgLIGHT::Init( void ) {
-    FG_LOG( FG_EVENT, FG_INFO, 
+    SG_LOG( SG_EVENT, SG_INFO, 
            "Initializing Lighting interpolation tables." );
 
     // build the path name to the ambient lookup table
-    FGPath path( current_options.get_fg_root() );
-    FGPath ambient = path;
+    SGPath path( globals->get_fg_root() );
+    SGPath ambient = path;
     ambient.append( "Lighting/ambient" );
-    FGPath diffuse = path;
+    SGPath diffuse = path;
     diffuse.append( "Lighting/diffuse" );
-    FGPath sky = path;
+    SGPath sky = path;
     sky.append( "Lighting/sky" );
 
     // initialize ambient table
-    ambient_tbl = new fgINTERPTABLE( ambient.str() );
+    ambient_tbl = new SGInterpTable( ambient.str() );
 
     // initialize diffuse table
-    diffuse_tbl = new fgINTERPTABLE( diffuse.str() );
+    diffuse_tbl = new SGInterpTable( diffuse.str() );
     
     // initialize sky table
-    sky_tbl = new fgINTERPTABLE( sky.str() );
+    sky_tbl = new SGInterpTable( sky.str() );
 }
 
 
@@ -108,19 +108,19 @@ void fgLIGHT::Update( void ) {
 
     f = current_aircraft.fdm_state;
 
-    FG_LOG( FG_EVENT, FG_INFO, "Updating light parameters." );
+    SG_LOG( SG_EVENT, SG_INFO, "Updating light parameters." );
 
     // calculate lighting parameters based on sun's relative angle to
     // local up
 
-    deg = sun_angle * RAD_TO_DEG;
-    FG_LOG( FG_EVENT, FG_INFO, "  Sun angle = " << deg );
+    deg = sun_angle * SGD_RADIANS_TO_DEGREES;
+    SG_LOG( SG_EVENT, SG_INFO, "  Sun angle = " << deg );
 
     ambient = ambient_tbl->interpolate( deg );
     diffuse = diffuse_tbl->interpolate( deg );
     sky_brightness = sky_tbl->interpolate( deg );
 
-    FG_LOG( FG_EVENT, FG_INFO, 
+    SG_LOG( SG_EVENT, SG_INFO, 
            "  ambient = " << ambient << "  diffuse = " << diffuse 
            << "  sky = " << sky_brightness );
 
@@ -161,27 +161,46 @@ void fgLIGHT::UpdateAdjFog( void ) {
 
     f = current_aircraft.fdm_state;
 
-    FG_LOG( FG_EVENT, FG_DEBUG, "Updating adjusted fog parameters." );
+    SG_LOG( SG_EVENT, SG_DEBUG, "Updating adjusted fog parameters." );
 
     // set fog color (we'll try to match the sunset color in the
     // direction we are looking
 
+    // Do some sanity checking ...
+    if ( sun_rotation < -2.0 * SGD_2PI || sun_rotation > 2.0 * SGD_2PI ) {
+       SG_LOG( SG_EVENT, SG_ALERT, "Sun rotation bad = " << sun_rotation );
+       exit(-1);
+    }
+    if ( f->get_Psi() < -2.0 * SGD_2PI || f->get_Psi() > 2.0 * SGD_2PI ) {
+       SG_LOG( SG_EVENT, SG_ALERT, "Psi rotation bad = " << f->get_Psi() );
+       exit(-1);
+    }
+    if ( globals->get_current_view()->get_view_offset() < -2.0 * SGD_2PI ||
+        globals->get_current_view()->get_view_offset() > 2.0 * SGD_2PI ) {
+       SG_LOG( SG_EVENT, SG_ALERT, "current view()->view offset bad = " 
+               << globals->get_current_view()->get_view_offset() );
+       exit(-1);
+    }
+
     // first determine the difference between our view angle and local
     // direction to the sun
-    rotation = -(sun_rotation + FG_PI) 
+    rotation = -(sun_rotation + SGD_PI) 
        - (f->get_Psi() - globals->get_current_view()->get_view_offset());
+    if ( globals->get_current_view()->get_reverse_view_offset() ) {
+       rotation += SGD_PI;
+    }
     while ( rotation < 0 ) {
-       rotation += FG_2PI;
+       rotation += SGD_2PI;
     }
-    while ( rotation > FG_2PI ) {
-       rotation -= FG_2PI;
+    while ( rotation > SGD_2PI ) {
+       rotation -= SGD_2PI;
     }
-    rotation *= RAD_TO_DEG;
-    // fgPrintf( FG_EVENT, FG_INFO, 
+    rotation *= SGD_RADIANS_TO_DEGREES;
+    // fgPrintf( SG_EVENT, SG_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;
+    sun_angle_deg = sun_angle * SGD_RADIANS_TO_DEGREES;
     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)) / 20.0;