From fdc94bd13ad378b87fbb8d82a0e7212e9600d474 Mon Sep 17 00:00:00 2001
From: curt <curt>
Date: Sun, 17 May 1998 16:59:03 +0000
Subject: [PATCH] First pass at view frustum culling now operational.

---
 Main/Makefile.am |  6 +-----
 Main/views.cxx   | 17 ++++++++++-------
 Main/views.hxx   |  7 +++++++
 3 files changed, 18 insertions(+), 12 deletions(-)

diff --git a/Main/Makefile.am b/Main/Makefile.am
index 2497c22c0..08cc5d65b 100644
--- a/Main/Makefile.am
+++ b/Main/Makefile.am
@@ -1,6 +1,6 @@
 EXTRA_DIST = runfg.in runfg.bat.in
 
-bin_PROGRAMS = fg ttest
+bin_PROGRAMS = fg
 
 bin_SCRIPTS = runfg runfg.bat
 
@@ -31,10 +31,6 @@ fg_LDADD = \
 	$(top_builddir)/Lib/Debug/libDebug.la \
 	$(top_builddir)/Lib/zlib/libz.la
 
-ttest_SOURCES = ttest.cxx
-
-ttest_LDADD = $(top_builddir)/Lib/Math/libMath.la \
-
 INCLUDES += \
 	-DGLUT \
 	-I$(top_builddir) \
diff --git a/Main/views.cxx b/Main/views.cxx
index d9ac0d6e6..803eb4d89 100644
--- a/Main/views.cxx
+++ b/Main/views.cxx
@@ -72,23 +72,23 @@ void fgVIEW::Update( fgFLIGHT *f ) {
     scenery.center.y = scenery.next_center.y;
     scenery.center.z = scenery.next_center.z;
 
-    printf("win_ratio = %.2f\n", win_ratio);
+    // printf("win_ratio = %.2f\n", win_ratio);
 
     // calculate sin() and cos() of fov / 2 in X direction;
-    theta_x = FG_PI_2 - (o->fov * win_ratio * DEG_TO_RAD) / 2.0;
-    printf("theta_x = %.2f\n", theta_x);
+    theta_x = (o->fov * win_ratio * DEG_TO_RAD) / 2.0;
+    // printf("theta_x = %.2f\n", theta_x);
     sin_fov_x = sin(theta_x);
     cos_fov_x = cos(theta_x);
     slope_x = sin_fov_x / cos_fov_x;
-    printf("slope_x = %.2f\n", slope_x);
+    // printf("slope_x = %.2f\n", slope_x);
 
     // calculate sin() and cos() of fov / 2 in Y direction;
-    theta_y = FG_PI_2 - (o->fov * DEG_TO_RAD) / 2.0;
-    printf("theta_y = %.2f\n", theta_y);
+    theta_y = (o->fov * DEG_TO_RAD) / 2.0;
+    // printf("theta_y = %.2f\n", theta_y);
     sin_fov_y = sin(theta_y);
     cos_fov_y = cos(theta_y);
     slope_y = sin_fov_y / cos_fov_y;
-    printf("slope_y = %.2f\n", slope_y);
+    // printf("slope_y = %.2f\n", slope_y);
 
     // calculate the cartesion coords of the current lat/lon/0 elev
     p.lon = FG_Longitude;
@@ -318,6 +318,9 @@ fgVIEW::~fgVIEW( void ) {
 
 
 // $Log$
+// Revision 1.10  1998/05/17 16:59:03  curt
+// First pass at view frustum culling now operational.
+//
 // Revision 1.9  1998/05/16 13:08:37  curt
 // C++ - ified views.[ch]xx
 // Shuffled some additional view parameters into the fgVIEW class.
diff --git a/Main/views.hxx b/Main/views.hxx
index a4c0f580d..d95f9945f 100644
--- a/Main/views.hxx
+++ b/Main/views.hxx
@@ -69,6 +69,10 @@ public:
     // slope of view frustum edge in eye space X axis
     double slope_x;
 
+    // View frustum cull ratio (% of tiles culled ... used for
+    // reporting purposes)
+    double vfc_ratio;
+
     // absolute view position
     fgCartesianPoint3d abs_view_pos;
 
@@ -142,6 +146,9 @@ extern fgVIEW current_view;
 
 
 // $Log$
+// Revision 1.7  1998/05/17 16:59:04  curt
+// First pass at view frustum culling now operational.
+//
 // Revision 1.6  1998/05/16 13:08:37  curt
 // C++ - ified views.[ch]xx
 // Shuffled some additional view parameters into the fgVIEW class.
-- 
2.39.2