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author(no author) <(no author)@0f7e0d06-a6f9-0310-a55f-d5f984f55e4c>2005-02-10 23:10:52 +0000
committer(no author) <(no author)@0f7e0d06-a6f9-0310-a55f-d5f984f55e4c>2005-02-10 23:10:52 +0000
commit695965a636bddfbafa0e8b8c66bfd3e7efa5d440 (patch)
tree92da17b074c1122ebdcd53f4cd5bc6b34151c83c /tags/START/glagen/3d/misc.cc
parent1761afd30c5baeb038b666a6d838309e1040eb60 (diff)
This commit was manufactured by cvs2svn to create tag 'START'.
git-svn-id: file:///usr/local/opt/svn/repos/glagen@6 0f7e0d06-a6f9-0310-a55f-d5f984f55e4c
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+//=============================================================================
+//
+// Glagen : a planet sized landscape generator
+// Copyright (C) 2002 Julien Guertault, Hugues Hiegel, Meng-Tih Lam
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+//
+//=============================================================================
+//
+// Glagen : GPL LAndscape GENerator
+//
+// misc.cc for Glagen : made by Zavie (Julien Guertault)
+//
+// www.glagen.org
+//
+//=============================================================================
+
+#include <cmath>
+#include "data_glagen.hh"
+
+//
+// This function is supposed to compute very fast a good approximation
+// of the distance.
+// The quality of this function is very important for the frame-rate
+//
+float Approx_dist (float x, float y, float z)
+{
+ // Well, I still have to fond an approximation ^_^
+ // I suppose I will use Taylor Lagrange, or something like that.
+ return (sqrt (x * x + y * y + z * z));
+}