From b5366cbda69f336cff1fc02e9e97903679c51544 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Wed, 2 Jun 2004 14:15:08 +0000
Subject: [PATCH] Added DataSet::s/getSkirtRatio() method to allow control of
 how deep to make the skirts around tiles.

---
 include/osgTerrain/DataSet |  4 ++++
 src/osgTerrain/DataSet.cpp | 13 ++++++++++---
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/include/osgTerrain/DataSet b/include/osgTerrain/DataSet
index 5916722d0..e1b7991d3 100644
--- a/include/osgTerrain/DataSet
+++ b/include/osgTerrain/DataSet
@@ -853,6 +853,9 @@ class OSGTERRAIN_EXPORT DataSet : public osg::Referenced
         void setVerticalScale(float verticalScale) { _verticalScale = verticalScale; }
         float getVerticalScale() const { return _verticalScale; }
                
+        void setSkirtRatio(float skirtRatio) { _skirtRatio = skirtRatio; }
+        float getSkirtRatio() const { return _skirtRatio; }
+
         void setDefaultColor(const osg::Vec4& defaultColor) { _defaultColor = defaultColor; }
         const osg::Vec4& getDefaultColor() const { return _defaultColor; }
 
@@ -960,6 +963,7 @@ class OSGTERRAIN_EXPORT DataSet : public osg::Referenced
         float                                       _maximumVisiableDistanceOfTopLevel;
 	float                                       _radiusToMaxVisibleDistanceRatio;
         float                                       _verticalScale;
+        float                                       _skirtRatio;
             
         osg::ref_ptr<osg::CoordinateSystemNode>     _destinationCoordinateSystem;
         osg::ref_ptr<osg::CoordinateSystemNode>     _intermediateCoordinateSystem;
diff --git a/src/osgTerrain/DataSet.cpp b/src/osgTerrain/DataSet.cpp
index 7267bc907..de3668ce4 100644
--- a/src/osgTerrain/DataSet.cpp
+++ b/src/osgTerrain/DataSet.cpp
@@ -2014,7 +2014,7 @@ osg::Node* DataSet::DestinationTile::createPolygonal()
 
     osg::ref_ptr<osg::Vec3Array> n = new osg::Vec3Array(numVertices); // must use ref_ptr so the array isn't removed when smooothvisitor is used    
     
-    float skirtRatio = 0.01f;
+    float skirtRatio = _dataSet->getSkirtRatio();
     osg::Matrixd localToWorld;
     osg::Matrixd worldToLocal;
     osg::Vec3 skirtVector(0.0f,0.0f,0.0f);
@@ -2338,6 +2338,14 @@ osg::Node* DataSet::DestinationTile::createPolygonal()
         geometry->setColorArray(colours);
         geometry->setColorBinding(osg::Geometry::BIND_OVERALL);
     }
+    
+    
+    osg::Geode* geode = new osg::Geode;
+    geode->addDrawable(geometry);
+
+#if 1
+    osgDB::writeNodeFile(*geode,"NodeBeforeSimplification.osg");
+#endif
 
     unsigned int targetMaxNumVertices = 2048;
     float sample_ratio = (numVertices <= targetMaxNumVertices) ? 1.0f : (float)targetMaxNumVertices/(float)numVertices; 
@@ -2352,8 +2360,6 @@ osg::Node* DataSet::DestinationTile::createPolygonal()
     tsv.stripify(*geometry);
 
 
-    osg::Geode* geode = new osg::Geode;
-    geode->addDrawable(geometry);
 
     if (useLocalToTileTransform)
     {
@@ -2800,6 +2806,7 @@ DataSet::DataSet()
     
     _radiusToMaxVisibleDistanceRatio = 7.0f;
     _verticalScale = 1.0f;
+    _skirtRatio = 0.02f;
 
     _convertFromGeographicToGeocentric = false;