X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=simgear%2Fmisc%2Ftexcoord.cxx;h=2705980d1c96db73cc04ed30c65878f49aface37;hb=2e71b64de1d937e2b7c34dd4a2365be455d0b82a;hp=3c9f762e89905bf264cad879d495a695126b7d6f;hpb=c0a633ea1d9240b467640975167fbcbee576b32b;p=simgear.git

diff --git a/simgear/misc/texcoord.cxx b/simgear/misc/texcoord.cxx
index 3c9f762e..2705980d 100644
--- a/simgear/misc/texcoord.cxx
+++ b/simgear/misc/texcoord.cxx
@@ -2,7 +2,7 @@
 //
 // Written by Curtis Olson, started March 1999.
 //
-// Copyright (C) 1999  Curtis L. Olson  - curt@flightgear.org
+// Copyright (C) 1999  Curtis L. Olson  - http://www.flightgear.org/~curt
 //
 // This library is free software; you can redistribute it and/or
 // modify it under the terms of the GNU Library General Public
@@ -14,10 +14,9 @@
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 // Library General Public License for more details.
 //
-// You should have received a copy of the GNU Library General Public
-// License along with this library; if not, write to the
-// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-// Boston, MA  02111-1307, USA.
+// 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //
 // $Id$
 
@@ -140,14 +139,18 @@ enter this in the official comments in case I forget again. :-)
 
 */
 
+#ifdef HAVE_CONFIG_H
+#  include <simgear_config.h>
+#endif
+
 #include <simgear/compiler.h>
 
-// #include STL_IOSTREAM
+// #include <iostream>
 
 #include "texcoord.hxx"
 
-// SG_USING_STD(cout);
-// SG_USING_STD(endl);
+// using std::cout;
+// using std::endl;
 
 
 #define FG_STANDARD_TEXTURE_DIMENSION 1000.0 // meters
@@ -173,13 +176,19 @@ static inline Point3D basic_tex_coord( const Point3D& p,
 // calculate "none stretching" texture coordinates
 point_list sgCalcTexCoords( const SGBucket& b, const point_list& geod_nodes,
 			    const int_list& fan, double scale )
+{
+    return sgCalcTexCoords(b.get_center_lat(), geod_nodes, fan, scale);
+}
+
+point_list sgCalcTexCoords( double centerLat, const point_list& geod_nodes,
+			    const int_list& fan, double scale )
 {
     // cout << "calculating texture coordinates for a specific fan of size = "
     //      << fan.size() << endl;
 
     // calculate perimeter based on center of this degree (not center
     // of bucket)
-    double clat = (int)b.get_center_lat();
+    double clat = (int)centerLat;
     if ( clat > 0 ) {
 	clat = (int)clat + 0.5;
     } else {
@@ -189,7 +198,7 @@ point_list sgCalcTexCoords( const SGBucket& b, const point_list& geod_nodes,
     double clat_rad = clat * SGD_DEGREES_TO_RADIANS;
     double cos_lat = cos( clat_rad );
     double local_radius = cos_lat * SG_EQUATORIAL_RADIUS_M;
-    double local_perimeter = 2.0 * local_radius * SGD_PI;
+    double local_perimeter = local_radius * SGD_2PI;
     double degree_width = local_perimeter / 360.0;
 
     // cout << "clat = " << clat << endl;
@@ -199,7 +208,7 @@ point_list sgCalcTexCoords( const SGBucket& b, const point_list& geod_nodes,
     // cout << "local_perimeter = " << local_perimeter << endl;
     // cout << "degree_width = " << degree_width << endl;
 
-    double perimeter = 2.0 * SG_EQUATORIAL_RADIUS_M * SGD_PI;
+    double perimeter = SG_EQUATORIAL_RADIUS_M * SGD_2PI;
     double degree_height = perimeter / 360.0;
     // cout << "degree_height = " << degree_height << endl;