Added the beginings of new osgParticle Explosion, Fire and SmokeEffects.

Added support for generation explosion, fire and smoke effects in osgsimulation

include/osgParticle/ParticleEffect

@@ -0,0 +1,60 @@
+/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield 
+ *
+ * This library is open source and may be redistributed and/or modified under  
+ * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
+ * (at your option) any later version.  The full license is in LICENSE file
+ * included with this distribution, and on the openscenegraph.org website.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
+ * OpenSceneGraph Public License for more details.
+*/
+
+#ifndef OSGPARTICLE_PARTICLEEFFECT
+#define OSGPARTICLE_PARTICLEEFFECT
+
+#include <osgParticle/Emitter>
+#include <osgParticle/Program>
+
+namespace osgParticle
+{
+
+    class OSGPARTICLE_EXPORT ParticleEffect : public osg::Group
+    {
+    public:
+    
+        ParticleEffect() {}
+        
+        ParticleEffect(const ParticleEffect& copy, const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY);
+
+        virtual const char *libraryName() const { return "osgParticle"; }
+        virtual const char *className() const { return "ParticleEffect"; }
+        virtual bool isSameKindAs(const osg::Object *obj) const { return dynamic_cast<const ParticleEffect*>(obj) != 0; }
+        virtual void accept(osg::NodeVisitor& nv) { if (nv.validNodeMask(*this)) { nv.pushOntoNodePath(this); nv.apply(*this); nv.popFromNodePath(); } }
+
+        void setEmitter(Emitter* emitter);
+        Emitter* getEmitter() { return _emitter.get(); }
+        const Emitter* getEmitter() const { return _emitter.get(); }
+
+        void setProgram(Program* program);
+        Program* getProgram() { return _program.get(); }
+        const Program* getProgram() const { return _program.get(); }
+        
+        void setParticleSystem(ParticleSystem* ps);
+        ParticleSystem* getParticleSystem() { return _particleSystem.get(); }
+        const ParticleSystem* getParticleSystem() const { return _particleSystem.get(); }
+
+        virtual void buildEffect() = 0;
+
+    protected:
+    
+        osg::ref_ptr<Emitter>           _emitter;
+        osg::ref_ptr<Program>           _program;
+        osg::ref_ptr<ParticleSystem>    _particleSystem;
+
+    };
+
+}
+
+#endif