From c50bc6329ff6e336de47efa7b2275c77e85a75a1 Mon Sep 17 00:00:00 2001
From: hugues <hugues@0f7e0d06-a6f9-0310-a55f-d5f984f55e4c>
Date: Thu, 10 Feb 2005 23:10:51 +0000
Subject: Initial revision

git-svn-id: file:///usr/local/opt/svn/repos/glagen@3 0f7e0d06-a6f9-0310-a55f-d5f984f55e4c
---
 trunk/glagen/3d/dot.cc | 184 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 184 insertions(+)
 create mode 100644 trunk/glagen/3d/dot.cc

(limited to 'trunk/glagen/3d/dot.cc')

diff --git a/trunk/glagen/3d/dot.cc b/trunk/glagen/3d/dot.cc
new file mode 100644
index 0000000..86df62b
--- /dev/null
+++ b/trunk/glagen/3d/dot.cc
@@ -0,0 +1,184 @@
+//=============================================================================
+//
+// 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
+//
+// dot.cc for Glagen : made by Zavie (Julien Guertault)
+//
+// www.glagen.org
+//
+//=============================================================================
+
+#include	<cstdlib>
+#include	<cmath>
+#include	"data_glagen.hh"
+#include	"dot.hh"
+
+// Constructor and destructor
+Dot :: Dot (const float x, const float y, const float z):
+  _x(x), _y(y), _z(z), _use(0), _computed(false)
+{
+  _normal = Vector (0, 0, 0);
+  _property = new property_t *[glagen.property]; // delete : dot.cc l61
+  for (int current = 0; current < glagen.property; current++)
+    _property[current] = NULL;
+  for (int current = 0; current < 6; current++)
+    _owner[current] = NULL;
+  step = glagen.step;
+}
+
+Dot :: ~Dot ()
+{
+  if (_property != NULL)
+    {
+      for (int current = 0; current < glagen.property; current++)
+	if (_property[current] != NULL)
+	  {
+	    if (_property[current]->data != NULL)
+	      delete _property[current]->data; // FIXME : warning here.
+	    delete _property[current];
+	  }
+      delete _property;
+    }
+}
+
+
+// ======================================================================= Read
+
+float		Dot :: x () const		{ return _x; }
+float		Dot :: y () const		{ return _y; }
+float		Dot :: z () const		{ return _z; }
+
+Triangle	*Dot :: Owner (int triangle) const
+{
+  if (triangle >= 0 && triangle < 6)
+    return _owner[triangle];
+  return NULL;
+}
+
+Vector		&Dot :: Normal ()		{ return _normal; }
+
+property_t	*Dot :: Property (const int i) const
+{
+  return _property[i];
+}
+
+bool		Dot :: Is_computed () const
+{
+  return _computed;
+}
+
+bool		Dot :: Is_checked () const
+{
+  return (step == glagen.step);
+}
+
+
+// ====================================================================== Write
+
+void		Dot :: Set (const float x, const float y, const float z)
+{
+  _x = x;
+  _y = y;
+  _z = z;
+}
+
+void		Dot :: Use (Triangle *old_one, Triangle *new_one)
+{
+  Change_owner (old_one, new_one);
+  _use = _use + 1;
+}
+
+bool		Dot :: Drop (Triangle *old_one, Triangle *new_one)
+{
+  Change_owner (old_one, new_one);
+  _use = _use - 1;
+  return (_use <= 0);
+}
+
+void		Dot :: Update_normal ()
+{
+  int		count = 0;
+
+  if (step == glagen.step)
+    return;
+  step = glagen.step;
+
+  _normal.Set (0, 0, 0);
+  for (int current = 0; current < 6; current++)
+    if (_owner[current] != NULL)
+      {
+	_normal = _normal + _owner[current]->Normal_real ();
+	count++;
+      }
+  if (count != 0)
+    _normal = _normal / count;
+}
+
+void		Dot :: Del_property (const int i)
+{
+  if (_property[i] != NULL)
+    {
+      delete _property[i];
+      _property[i] = NULL;
+    }
+}
+
+void		Dot :: Set_property (const int i, property_t *property)
+{
+  _property[i] = property;
+}
+
+void		Dot :: Computed ()		{ _computed = true; }
+
+void		Dot :: Checked ()		{ step = glagen.step; }
+
+// ====================================================================== Other
+
+Dot		*Dot :: Middle (const Dot *b)
+{
+  float xc = (x () + b->x ()) / 2;
+  float yc = (y () + b->y ()) / 2;
+  float zc = (z () + b->z ()) / 2;
+  float adjust = sqrtf (glagen.square_size / (xc * xc + yc * yc + zc * zc));
+  xc = xc * adjust;
+  yc = yc * adjust;
+  zc = zc * adjust;
+  return new Dot (xc, yc, zc); // delete : triangle.cc l99, 101, 103
+}
+
+// ================================================================== Protected
+
+void		Dot :: Change_owner (Triangle *old_one, Triangle *new_one)
+{
+  for (int current = 0; current < 6; current++)
+    if (_owner[current] == old_one)
+      {
+	_owner[current] = new_one;
+	return;
+      }
+  for (int current = 0; current < 6; current++)
+    if (_owner[current] == NULL)
+      {
+	_owner[current] = new_one;
+	return;
+      }
+}
-- 
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