From aef2a1c4847ac2080320129ceed2979cdeb5cb89 Mon Sep 17 00:00:00 2001
From: frohlich <frohlich>
Date: Sat, 2 Dec 2006 15:56:55 +0000
Subject: [PATCH] Modified Files: 	interpolater.cxx interpolater.hxx:
 Enable reading tables directly 	from our dom like tree.

---
 simgear/math/interpolater.cxx | 10 ++++++++++
 simgear/math/interpolater.hxx |  9 +++++++++
 2 files changed, 19 insertions(+)

diff --git a/simgear/math/interpolater.cxx b/simgear/math/interpolater.cxx
index ae2af9b6..59caa2fc 100644
--- a/simgear/math/interpolater.cxx
+++ b/simgear/math/interpolater.cxx
@@ -29,6 +29,7 @@
 
 #include <simgear/debug/logstream.hxx>
 #include <simgear/misc/sgstream.hxx>
+#include <simgear/props/props.hxx>
 
 #include "interpolater.hxx"
 
@@ -39,6 +40,15 @@ SGInterpTable::SGInterpTable()
 {
 }
 
+SGInterpTable::SGInterpTable(const SGPropertyNode* interpolation) 
+{
+    if (!interpolation)
+        return;
+    std::vector<SGPropertyNode_ptr> entries = interpolation->getChildren("entry");
+    for (unsigned i = 0; i < entries.size(); ++i)
+        addEntry(entries[i]->getDoubleValue("ind", 0.0),
+                 entries[i]->getDoubleValue("dep", 0.0));
+}
 
 // Constructor -- loads the interpolation table from the specified
 // file
diff --git a/simgear/math/interpolater.hxx b/simgear/math/interpolater.hxx
index 1681d9d3..797ddf4f 100644
--- a/simgear/math/interpolater.hxx
+++ b/simgear/math/interpolater.hxx
@@ -42,6 +42,8 @@
 #include STL_STRING
 SG_USING_STD(string);
 
+class SGPropertyNode;
+
 /**
  * A class that provids a simple linear 2d interpolation lookup table.
  * The actual table is expected to be loaded from a file.  The
@@ -56,6 +58,13 @@ public:
      */
     SGInterpTable();
 
+    /**
+     * Constructor. Loads the interpolation table from an interpolation
+     * property node.
+     * @param interpolation property node having entry children
+     */
+    SGInterpTable(const SGPropertyNode* interpolation);
+
     /**
      * Constructor. Loads the interpolation table from the specified file.
      * @param file name of interpolation file