Added new composite transform

include/ossim/base/ossim2dTo2dCompositeTransform.h

@@ -0,0 +1,77 @@
+//*******************************************************************
+//
+// License:  MIT
+// 
+// See LICENSE.txt file in the top level directory for more details.
+//
+// Description:  Contains class definition for ossim2dTo2dCompositeTransform.
+// 
+//*******************************************************************
+//  $Id$
+#ifndef ossim2dTo2dCompositeTransform_HEADER
+#define ossim2dTo2dCompositeTransform_HEADER
+#include <ossim/base/ossim2dTo2dTransform.h>
+#include <ossim/base/ossimRefPtr.h>
+#include <vector>
+
+/**
+ * This is the identity transform and just passes the input to the output.
+ */
+class OSSIM_DLL ossim2dTo2dCompositeTransform : public ossim2dTo2dTransform
+{
+public:
+   typedef std::vector<ossimRefPtr<ossim2dTo2dTransform> > CompositeTransformList;
+   ossim2dTo2dCompositeTransform(const CompositeTransformList& compositeTransformList = CompositeTransformList());
+   ossim2dTo2dCompositeTransform(const ossim2dTo2dCompositeTransform& rhs);
+   virtual ~ossim2dTo2dCompositeTransform();
+   virtual ossimObject* dup()const;
+
+
+   void add(ossimRefPtr<ossim2dTo2dTransform> transform);
+   void clear();
+
+   const CompositeTransformList& getCompositeTransformList()const;
+
+   /**
+    * 
+    */
+   virtual void forward(const ossimDpt& input,
+                        ossimDpt& output) const;
+
+
+   /**
+    * 
+    */
+   virtual void forward(ossimDpt&  /* modify_this */) const;
+
+   /**
+    * inverse transform just passes the point to the output.
+    */
+   virtual void inverse(const ossimDpt& input,
+                        ossimDpt&       output) const;
+
+   /**
+    * inverse transform nothing is modified on the input point.
+    */
+   virtual void inverse(ossimDpt&  /* modify_this */) const;
+
+   /**
+    * Pass equality to the parent
+    */
+   virtual const ossim2dTo2dCompositeTransform& operator=(
+                                                 const ossim2dTo2dCompositeTransform& rhs)
+   {
+      ossim2dTo2dTransform::operator =(rhs);
+
+      return *this;
+   }
+
+   virtual bool saveState(ossimKeywordlist& kwl, const char* prefix=0)const;
+   virtual bool loadState(const ossimKeywordlist& kwl, const char* prefix=0);
+
+protected:
+   CompositeTransformList m_compositeTransforms;
+
+   TYPE_DATA
+};
+#endif

src/base/ossim2dTo2dCompositeTransform.cpp

@@ -0,0 +1,132 @@
+#include <ossim/base/ossim2dTo2dCompositeTransform.h>
+#include <ossim/base/ossimKeywordlist.h>
+#include <ossim/base/ossim2dTo2dTransformRegistry.h>
+
+RTTI_DEF1_INST(ossim2dTo2dCompositeTransform, "ossim2dTo2dCompositeTransform", ossim2dTo2dTransform);
+
+ossim2dTo2dCompositeTransform::ossim2dTo2dCompositeTransform(const CompositeTransformList& compositeTransformList )
+: m_compositeTransforms(compositeTransformList)
+{
+
+}
+
+ossim2dTo2dCompositeTransform::ossim2dTo2dCompositeTransform(const ossim2dTo2dCompositeTransform& rhs)
+:m_compositeTransforms(rhs.m_compositeTransforms)
+{
+
+}
+
+ossim2dTo2dCompositeTransform::~ossim2dTo2dCompositeTransform()
+{
+   clear();
+}
+
+ossimObject* ossim2dTo2dCompositeTransform::dup()const
+{
+   return new ossim2dTo2dCompositeTransform(*this);
+}
+
+
+void ossim2dTo2dCompositeTransform::add(ossimRefPtr<ossim2dTo2dTransform> transform)
+{
+   if(transform)
+   {
+      m_compositeTransforms.push_back(transform);
+   }
+}
+
+void ossim2dTo2dCompositeTransform::clear()
+{
+   m_compositeTransforms.clear();
+}
+
+const ossim2dTo2dCompositeTransform::CompositeTransformList& ossim2dTo2dCompositeTransform::getCompositeTransformList()const
+{
+   return m_compositeTransforms;
+}
+
+void ossim2dTo2dCompositeTransform::forward(const ossimDpt& input,
+                                            ossimDpt& output) const
+{
+   ossimDpt tempInput = input;
+   output             = input;
+
+   for(auto transform:m_compositeTransforms)
+   {
+      transform->forward(tempInput, output);
+      tempInput=output;
+   }
+}
+
+/**
+ * 
+ */
+void ossim2dTo2dCompositeTransform::forward(ossimDpt&  modify_this) const
+{
+   forward(ossimDpt(modify_this), modify_this);
+}
+
+/**
+ * inverse transform just passes the point to the output.
+ */
+void ossim2dTo2dCompositeTransform::inverse(const ossimDpt& input,
+                                            ossimDpt&       output) const
+{
+   ossimDpt tempInput = input;
+   output             = input;
+
+   for(CompositeTransformList::const_reverse_iterator iter = m_compositeTransforms.rbegin();
+       iter != m_compositeTransforms.rend();
+       ++iter
+       )
+   {
+       (*iter)->inverse(tempInput, output);
+       tempInput = output;     
+   }
+}
+
+/**
+ * inverse transform nothing is modified on the input point.
+ */
+void ossim2dTo2dCompositeTransform::inverse(ossimDpt&  modify_this) const
+{
+   inverse(ossimDpt(modify_this), modify_this);
+}
+
+bool ossim2dTo2dCompositeTransform::saveState(ossimKeywordlist& kwl, const char* prefix)const
+{
+   bool result = ossim2dTo2dTransform::saveState(kwl, prefix);
+   ossim_uint64 idx = 0;
+
+   for(; idx < m_compositeTransforms.size();++idx)
+   {
+      ossimString newPrefix(prefix);
+
+      newPrefix += ossimString("object") +
+                   ossimString::toString(idx) + 
+                   ossimString(".");
+      result &= m_compositeTransforms[idx]->saveState(kwl, newPrefix.c_str());
+   }
+
+   return result;
+}
+
+bool ossim2dTo2dCompositeTransform::loadState(const ossimKeywordlist& kwl, const char* prefix)
+{
+   bool result = ossim2dTo2dTransform::loadState(kwl, prefix);
+
+   std::vector<ossimString> prefixValues;
+   clear();
+   kwl.getSubstringKeyList(prefixValues, ossimString("^(")+ossimString(prefix)+"object[0-9]+.)");
+
+   for(auto newPrefix:prefixValues)
+   {
+      ossimRefPtr<ossim2dTo2dTransform> trans = ossim2dTo2dTransformRegistry::instance()->createTransform(kwl, newPrefix.c_str());
+      if(trans)
+      {
+            add(trans);
+      }
+   }
+
+   return result;
+}