Checked in osgParticle, writtten by Marco Jez.

include/osgParticle/ModularProgram

@@ -0,0 +1,90 @@
+//C++ header - Open Scene Graph - Copyright (C) 1998-2002 Robert Osfield
+//Distributed under the terms of the GNU Library General Public License (LGPL)
+//as published by the Free Software Foundation.
+//osgParticle - Copyright (C) 2002 Marco Jez
+
+#ifndef OSGPARTICLE_MODULARPROGRAM_
+#define OSGPARTICLE_MODULARPROGRAM_ 1
+
+#include <osgParticle/Export>
+#include <osgParticle/Program>
+#include <osgParticle/Operator>
+
+#include <osg/CopyOp>
+#include <osg/Object>
+#include <osg/Node>
+#include <osg/NodeVisitor>
+
+namespace osgParticle
+{
+
+    /**    A program class for performing operations on particles using a sequence of <I>operators</I>.
+        To use a <CODE>ModularProgram</CODE> you have to create some <CODE>Operator</CODE> objects and 
+        add them to the program.
+        All operators will be applied to each particle in the same order they've been added to the program.
+    */    
+    class OSGPARTICLE_EXPORT ModularProgram: public Program {
+    public:
+        ModularProgram();
+        ModularProgram(const ModularProgram &copy, const osg::CopyOp &copyop = osg::CopyOp::SHALLOW_COPY);
+        
+        META_Node(ModularProgram);
+        
+        /// Get the number of operators.
+        inline int numOperators() const;
+        
+        /// Add an operator to the list.        
+        inline void addOperator(Operator *o);
+        
+        /// Get a pointer to an operator in the list.
+        inline Operator *getOperator(int i);
+        
+        /// Get a const pointer to an operator in the list.
+        inline const Operator *getOperator(int i) const;
+        
+        /// Remove an operator from the list.
+        inline void removeOperator(int i);        
+            
+    protected:
+        virtual ~ModularProgram() {}
+        ModularProgram &operator=(const ModularProgram &) { return *this; }
+        
+        void execute(double dt);
+        
+    private:
+        typedef std::vector<osg::ref_ptr<Operator> > Operator_vector;
+
+        Operator_vector operators_;
+    };
+    
+    // INLINE FUNCTIONS
+    
+    inline int ModularProgram::numOperators() const
+    {
+        return static_cast<int>(operators_.size());
+    }
+
+    inline void ModularProgram::addOperator(Operator *o)
+    {
+        operators_.push_back(o);
+    }
+
+    inline Operator *ModularProgram::getOperator(int i)
+    {
+        return operators_[i].get();
+    }
+
+    inline const Operator *ModularProgram::getOperator(int i) const
+    {
+        return operators_[i].get();
+    }
+
+    inline void ModularProgram::removeOperator(int i)
+    {
+        operators_.erase(operators_.begin()+i);
+    }
+    
+
+}
+
+#endif