From 9f63b89e6a5fb9c8f7d25693fbda587b95910833 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Fri, 14 Dec 2007 17:40:11 +0000
Subject: [PATCH] Refectored the loading of Locator out into its own separate
 file

---
 src/osgPlugins/osgTerrain/CMakeLists.txt |   1 +
 src/osgPlugins/osgTerrain/Locator.cpp    | 158 +++++++++++++++++++++++
 2 files changed, 159 insertions(+)
 create mode 100644 src/osgPlugins/osgTerrain/Locator.cpp

diff --git a/src/osgPlugins/osgTerrain/CMakeLists.txt b/src/osgPlugins/osgTerrain/CMakeLists.txt
index 5a5d6889bf4..c3d75ad536b 100644
--- a/src/osgPlugins/osgTerrain/CMakeLists.txt
+++ b/src/osgPlugins/osgTerrain/CMakeLists.txt
@@ -2,6 +2,7 @@
 
 
 SET(TARGET_SRC 
+    Locator.cpp
     Terrain.cpp
     GeometryTechnique.cpp
     ReaderWriterOsgTerrain.cpp
diff --git a/src/osgPlugins/osgTerrain/Locator.cpp b/src/osgPlugins/osgTerrain/Locator.cpp
new file mode 100644
index 00000000000..50b056b1fab
--- /dev/null
+++ b/src/osgPlugins/osgTerrain/Locator.cpp
@@ -0,0 +1,158 @@
+#include <osgTerrain/Terrain>
+
+#include <iostream>
+#include <string>
+
+#include <osg/Vec3>
+#include <osg/Vec4>
+#include <osg/io_utils>
+
+#include <osgDB/ReadFile>
+#include <osgDB/Registry>
+#include <osgDB/Input>
+#include <osgDB/Output>
+#include <osgDB/ParameterOutput>
+
+bool Locator_readLocalData(osg::Object &obj, osgDB::Input &fr);
+bool Locator_writeLocalData(const osg::Object &obj, osgDB::Output &fw);
+
+osgDB::RegisterDotOsgWrapperProxy Locator_Proxy
+(
+    new osgTerrain::Locator,
+    "Locator",
+    "Object Locator",
+    Locator_readLocalData,
+    Locator_writeLocalData
+);
+
+
+bool Locator_readLocalData(osg::Object& obj, osgDB::Input &fr)
+{
+    osgTerrain::Locator& locator = static_cast<osgTerrain::Locator&>(obj);
+
+    bool itrAdvanced = false;
+
+    if (fr.matchSequence("Format %w") || fr.matchSequence("Format %s") )
+    {
+        locator.setFormat(fr[1].getStr());
+
+        fr += 2;
+        itrAdvanced = true;
+    }
+
+    if (fr.matchSequence("CoordinateSystemType %w"))
+    {
+        if (fr[1].matchWord("GEOCENTRIC")) locator.setCoordinateSystemType(osgTerrain::Locator::GEOCENTRIC);
+        else if (fr[1].matchWord("GEOGRAPHIC")) locator.setCoordinateSystemType(osgTerrain::Locator::GEOGRAPHIC);
+        else locator.setCoordinateSystemType(osgTerrain::Locator::PROJECTED);
+
+        fr += 2;
+        itrAdvanced = true;
+    }
+
+    if (fr.matchSequence("CoordinateSystem %w") || fr.matchSequence("CoordinateSystem %s") )
+    {
+        locator.setCoordinateSystem(fr[1].getStr());
+
+        fr += 2;
+        itrAdvanced = true;
+    }
+
+    if (fr.matchSequence("TransformScaledByResolution %w"))
+    {
+        locator.setTransformScaledByResolution(fr[1].matchWord("TRUE") || fr[1].matchWord("True") || fr[1].matchWord("true"));
+        fr += 2;
+        itrAdvanced = true;
+    }
+
+    if (fr.matchSequence("Transform {"))
+    {
+        int tansform_entry = fr[0].getNoNestedBrackets();
+
+        fr += 2;
+
+        int row=0;
+        int col=0;
+        double v;
+        osg::Matrixd matrix;
+        while (!fr.eof() && fr[0].getNoNestedBrackets()>tansform_entry)
+        {
+            if (fr[0].getFloat(v))
+            {
+                matrix(row,col)=v;
+                ++col;
+                if (col>=4)
+                {
+                    col = 0;
+                    ++row;
+                }
+                ++fr;
+            }
+            else fr.advanceOverCurrentFieldOrBlock();
+        }
+
+        locator.setTransform(matrix);
+
+        ++fr;
+        itrAdvanced = true;
+    }
+
+
+    if (fr.matchSequence("Extents %f %f %f %f"))
+    {
+        double minX,minY,maxX,maxY;
+        fr[1].getFloat(minX);
+        fr[2].getFloat(minY);
+        fr[3].getFloat(maxX);
+        fr[4].getFloat(maxY);
+
+        locator.setTransformAsExtents(minX, minY, maxX, maxY);
+
+        fr += 5;
+        itrAdvanced = true;
+    }
+
+    return itrAdvanced;
+}
+
+bool Locator_writeLocalData(const osg::Object& obj, osgDB::Output& fw)
+{
+    const osgTerrain::Locator& locator = static_cast<const osgTerrain::Locator&>(obj);
+
+    if (!locator.getFormat().empty()) fw.indent()<<"Format "<<fw.wrapString(locator.getFormat())<<std::endl;
+    if (!locator.getCoordinateSystem().empty()) fw.indent()<<"CoordinateSystem "<<fw.wrapString(locator.getCoordinateSystem())<<std::endl;
+
+    fw.indent()<<"CoordinateSystemType ";
+    switch(locator.getCoordinateSystemType())
+    {
+        case(osgTerrain::Locator::GEOCENTRIC):
+        {        
+            fw<<"GEOCENTRIC"<<std::endl;
+            break;
+        }
+        case(osgTerrain::Locator::GEOGRAPHIC):
+        {        
+            fw<<"GEOGRAPHIC"<<std::endl;
+            break;
+        }
+        case(osgTerrain::Locator::PROJECTED):
+        {        
+            fw<<"PROJECTED"<<std::endl;
+            break;
+        }
+    }   
+    
+    fw.indent()<<"TransformScaledByResolution " << (locator.getTransformScaledByResolution() ? "TRUE":"FALSE") <<std::endl;
+
+    const osg::Matrixd& matrix = locator.getTransform();
+    fw.indent() << "Transform {" << std::endl;
+    fw.moveIn();
+    fw.indent() << matrix(0,0) << " " << matrix(0,1) << " " << matrix(0,2) << " " << matrix(0,3) << std::endl;
+    fw.indent() << matrix(1,0) << " " << matrix(1,1) << " " << matrix(1,2) << " " << matrix(1,3) << std::endl;
+    fw.indent() << matrix(2,0) << " " << matrix(2,1) << " " << matrix(2,2) << " " << matrix(2,3) << std::endl;
+    fw.indent() << matrix(3,0) << " " << matrix(3,1) << " " << matrix(3,2) << " " << matrix(3,3) << std::endl;
+    fw.moveOut();
+    fw.indent() << "}"<< std::endl;
+
+    return true;
+}