From d87408c767d3767220f8b19a73b38663fbaf769b Mon Sep 17 00:00:00 2001
From: curt <curt>
Date: Thu, 30 Apr 1998 12:34:17 +0000
Subject: [PATCH] Added command line rendering options:   enable/disable
 fog/haze   specify smooth/flat shading   disable sky blending and just use a
 solid color   enable wireframe drawing mode

---
 Main/GLUTmain.cxx | 42 ++++++++++++++++++++++++++++++++++--------
 Main/fg_init.cxx  | 21 ++++++++++++++++++++-
 Main/options.cxx  | 47 ++++++++++++++++++++++++++++++++++++++++++++---
 Main/options.hxx  | 23 +++++++++++++++++------
 Main/views.cxx    |  9 ++++++++-
 5 files changed, 123 insertions(+), 19 deletions(-)

diff --git a/Main/GLUTmain.cxx b/Main/GLUTmain.cxx
index 88cd1191c..609096142 100644
--- a/Main/GLUTmain.cxx
+++ b/Main/GLUTmain.cxx
@@ -54,7 +54,7 @@
 #include <Math/fg_geodesy.h>
 #include <Math/mat3.h>
 #include <Math/polar.h>
-#include <Scenery/scenery.h>
+#include <Scenery/scenery.hxx>
 #include <Scenery/tilemgr.hxx>
 #include <Time/event.hxx>
 #include <Time/fg_time.hxx>
@@ -184,9 +184,11 @@ const int   DefaultViewMode = HUD_VIEW;
 // fgInitVisuals() -- Initialize various GL/view parameters
 static void fgInitVisuals( void ) {
     fgLIGHT *l;
+    fgOPTIONS *o;
     struct fgWEATHER *w;
 
     l = &cur_light_params;
+    o = &current_options;
     w = &current_weather;
 
     // xglDisable( GL_DITHER );
@@ -205,8 +207,10 @@ static void fgInitVisuals( void ) {
     // xglFogf (GL_FOG_DENSITY, w->visibility);
     xglHint (GL_FOG_HINT, GL_NICEST /* GL_FASTEST */ );
 
-    // draw wire frame
-    // xglPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
+    if ( o->wireframe ) {
+	// draw wire frame
+	xglPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
+    }
 }
 
 
@@ -319,6 +323,7 @@ static void fgRenderFrame( void ) {
     fgTIME *t;
     fgVIEW *v;
     double angle;
+    GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
     GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
     GLfloat color[4] = { 0.54, 0.44, 0.29, 1.0 };
 
@@ -330,6 +335,12 @@ static void fgRenderFrame( void ) {
     // update view volume parameters
     fgUpdateViewParams();
 
+    if ( o->skyblend ) {
+	glClearColor(black[0], black[1], black[2], black[3]);
+    } else {
+	glClearColor(l->sky_color[0], l->sky_color[1], 
+		     l->sky_color[2], l->sky_color[3]);
+    }
     xglClear( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT );
 
     // Tell GL we are switching to model view parameters
@@ -342,7 +353,9 @@ static void fgRenderFrame( void ) {
     xglDisable( GL_CULL_FACE );
     xglDisable( GL_FOG );
     xglShadeModel( GL_SMOOTH );
-    fgSkyRender();
+    if ( o->skyblend ) {
+	fgSkyRender();
+    }
 
     // setup transformation for drawing astronomical objects
     xglPushMatrix();
@@ -376,15 +389,21 @@ static void fgRenderFrame( void ) {
     xglPopMatrix();
 
     // draw scenery
-    xglShadeModel( /* GL_FLAT */ GL_SMOOTH ); 
+    if ( o->shading ) {
+	xglShadeModel( GL_SMOOTH ); 
+    } else {
+	xglShadeModel( GL_FLAT ); 
+    }
     xglEnable( GL_DEPTH_TEST );
-    xglEnable( GL_FOG );
-    xglFogfv (GL_FOG_COLOR, l->fog_color);
+    if ( o->fog ) {
+	xglEnable( GL_FOG );
+	xglFogfv (GL_FOG_COLOR, l->fog_color);
+    }
     // set lighting parameters
     xglLightfv(GL_LIGHT0, GL_AMBIENT, l->scene_ambient );
     xglLightfv(GL_LIGHT0, GL_DIFFUSE, l->scene_diffuse );
 
-    if ( o->use_textures ) {
+    if ( o->textures ) {
 	// texture parameters
 	xglEnable( GL_TEXTURE_2D );
 	xglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT ) ;
@@ -699,6 +718,13 @@ extern "C" {
 
 
 // $Log$
+// Revision 1.9  1998/04/30 12:34:17  curt
+// Added command line rendering options:
+//   enable/disable fog/haze
+//   specify smooth/flat shading
+//   disable sky blending and just use a solid color
+//   enable wireframe drawing mode
+//
 // Revision 1.8  1998/04/28 01:20:21  curt
 // Type-ified fgTIME and fgVIEW.
 // Added a command line option to disable textures.
diff --git a/Main/fg_init.cxx b/Main/fg_init.cxx
index c08b16b98..d345bef53 100644
--- a/Main/fg_init.cxx
+++ b/Main/fg_init.cxx
@@ -45,7 +45,7 @@
 #include <Debug/fg_debug.h>
 #include <Joystick/joystick.h>
 #include <Math/fg_random.h>
-#include <Scenery/scenery.h>
+#include <Scenery/scenery.hxx>
 #include <Scenery/tilemgr.hxx>
 #include <Time/event.hxx>
 #include <Time/fg_time.hxx>
@@ -97,6 +97,18 @@ int fgInitPosition( void ) {
     // FG_Runway_altitude = 950.0;
     // FG_Altitude = FG_Runway_altitude + 3.758099;
 
+    // Initial Position near KHSP (Hot Springs, VA)
+    // FG_Longitude = (-79.8338964 + 0.01) * DEG_TO_RAD;
+    // FG_Latitude  = ( 37.9514564 + 0.008) * DEG_TO_RAD;
+    // FG_Runway_altitude = (3792 + 2800);
+    // FG_Altitude = FG_Runway_altitude + 3.758099;
+
+    // Initial Position at (SEZ) SEDONA airport
+    FG_Longitude = (-111.7884614 + 0.01) * DEG_TO_RAD;
+    FG_Latitude  = (  34.8486289 - 0.015) * DEG_TO_RAD;
+    FG_Runway_altitude = (4827 + 450);
+    FG_Altitude = FG_Runway_altitude + 3.758099;
+
     // Initial Position: Somewhere near the Grand Canyon
     // FG_Longitude = ( -112.5 ) * DEG_TO_RAD;
     // FG_Latitude  = (  36.5 ) * DEG_TO_RAD;
@@ -369,6 +381,13 @@ int fgInitSubsystems( void ) {
 
 
 // $Log$
+// Revision 1.8  1998/04/30 12:34:18  curt
+// Added command line rendering options:
+//   enable/disable fog/haze
+//   specify smooth/flat shading
+//   disable sky blending and just use a solid color
+//   enable wireframe drawing mode
+//
 // Revision 1.7  1998/04/28 01:20:22  curt
 // Type-ified fgTIME and fgVIEW.
 // Added a command line option to disable textures.
diff --git a/Main/options.cxx b/Main/options.cxx
index 724d145f5..b104d2172 100644
--- a/Main/options.cxx
+++ b/Main/options.cxx
@@ -46,9 +46,19 @@ fgOPTIONS::fgOPTIONS( void ) {
     // set initial values/defaults
 
     strcpy(airport_id, "");
+
+    // Features
     hud_status = 0;
+
+    // Rendering options
+    fog = 1;
+    shading = 1;
+    skyblend = 1;
+    textures = 1;
+    wireframe = 0;
+
+    // Time options
     time_offset = 0;
-    use_textures = 1;
 }
 
 
@@ -171,10 +181,26 @@ int fgOPTIONS::parse( int argc, char **argv ) {
 	} else if ( strncmp(argv[i], "--airport-id=", 13) == 0 ) {
 	    argv[i] += 13;
 	    strncpy(airport_id, argv[i], 4);
+	} else if ( strcmp(argv[i], "--disable-fog") == 0 ) {
+	    fog = 0;	
+	} else if ( strcmp(argv[i], "--enable-fog") == 0 ) {
+	    fog = 1;	
+	} else if ( strcmp(argv[i], "--shading-flat") == 0 ) {
+	    shading = 0;	
+	} else if ( strcmp(argv[i], "--shading-smooth") == 0 ) {
+	    shading = 1;	
+	} else if ( strcmp(argv[i], "--disable-skyblend") == 0 ) {
+	    skyblend = 0;	
+	} else if ( strcmp(argv[i], "--enable-skyblend") == 0 ) {
+	    skyblend = 1;	
 	} else if ( strcmp(argv[i], "--disable-textures") == 0 ) {
-	    use_textures = 0;	
+	    textures = 0;	
 	} else if ( strcmp(argv[i], "--enable-textures") == 0 ) {
-	    use_textures = 1;	
+	    textures = 1;	
+	} else if ( strcmp(argv[i], "--disable-wireframe") == 0 ) {
+	    wireframe = 0;	
+	} else if ( strcmp(argv[i], "--enable-wireframe") == 0 ) {
+	    wireframe = 1;	
 	} else if ( strncmp(argv[i], "--time-offset=", 14) == 0 ) {
 	    time_offset = parse_time_offset(argv[i]);
 	} else {
@@ -207,8 +233,16 @@ void fgOPTIONS::usage ( void ) {
     printf("\n");
 
     printf("Rendering Options:\n");
+    printf("\t--disable-fog:  disable fog/haze\n");
+    printf("\t--enable-fog:  enable fog/haze\n");
+    printf("\t--shading-flat:  enable flat shading\n");
+    printf("\t--shading-smooth:  enable smooth shading\n");
+    printf("\t--disable-skyblend:  disable sky blending\n");
+    printf("\t--enable-skyblend:  enable sky blending\n");
     printf("\t--disable-textures:  disable textures\n");
     printf("\t--enable-textures:  enable textures\n");
+    printf("\t--disable-wireframe:  disable wireframe drawing mode\n");
+    printf("\t--enable-wireframe:  enable wireframe drawing mode\n");
     printf("\n");
 
     printf("Time Options:\n");
@@ -222,6 +256,13 @@ fgOPTIONS::~fgOPTIONS( void ) {
 
 
 // $Log$
+// Revision 1.5  1998/04/30 12:34:19  curt
+// Added command line rendering options:
+//   enable/disable fog/haze
+//   specify smooth/flat shading
+//   disable sky blending and just use a solid color
+//   enable wireframe drawing mode
+//
 // Revision 1.4  1998/04/28 01:20:22  curt
 // Type-ified fgTIME and fgVIEW.
 // Added a command line option to disable textures.
diff --git a/Main/options.hxx b/Main/options.hxx
index afa0a2462..46ce3d6a2 100644
--- a/Main/options.hxx
+++ b/Main/options.hxx
@@ -44,14 +44,18 @@ public:
     // ID of initial starting airport
     char airport_id[5];
 
-    // HUD on/off
-    int hud_status;
+    // Features
+    int hud_status;    // HUD on/off
 
-    // Offset true time by this many seconds
-    int time_offset;
+    // Rendering options
+    int fog;           // Fog enabled/disabled
+    int shading;       // shading method, 0 = Flat, 1 = Smooth
+    int skyblend;      // Blend sky to haze (using polygons) or just clear
+    int textures;      // Textures enabled/disabled
+    int wireframe;     // Wireframe mode enabled/disabled
 
-    // Textures enabled/disabled
-    int use_textures;
+    // Time options
+    int time_offset;   // Offset true time by this many seconds
 
     // Constructor
     fgOPTIONS( void );
@@ -75,6 +79,13 @@ extern fgOPTIONS current_options;
 
 
 // $Log$
+// Revision 1.4  1998/04/30 12:34:19  curt
+// Added command line rendering options:
+//   enable/disable fog/haze
+//   specify smooth/flat shading
+//   disable sky blending and just use a solid color
+//   enable wireframe drawing mode
+//
 // Revision 1.3  1998/04/28 01:20:23  curt
 // Type-ified fgTIME and fgVIEW.
 // Added a command line option to disable textures.
diff --git a/Main/views.cxx b/Main/views.cxx
index a95e202ad..61fa520ba 100644
--- a/Main/views.cxx
+++ b/Main/views.cxx
@@ -34,7 +34,7 @@
 #include <Math/mat3.h>
 #include <Math/polar.h>
 #include <Math/vector.h>
-#include <Scenery/scenery.h>
+#include <Scenery/scenery.hxx>
 #include <Time/fg_time.hxx>
 
 #include "views.hxx"
@@ -200,6 +200,13 @@ void fgViewUpdate(fgFLIGHT *f, fgVIEW *v, fgLIGHT *l) {
 
 
 // $Log$
+// Revision 1.7  1998/04/30 12:34:20  curt
+// Added command line rendering options:
+//   enable/disable fog/haze
+//   specify smooth/flat shading
+//   disable sky blending and just use a solid color
+//   enable wireframe drawing mode
+//
 // Revision 1.6  1998/04/28 01:20:23  curt
 // Type-ified fgTIME and fgVIEW.
 // Added a command line option to disable textures.
-- 
2.39.2