---

c:/home/kevn/src/animaniac/ani/Dynamics/operators/SpiralEmitter.h

Go to the documentation of this file.

#ifndef SPIRAL_EMITTER_OPERATOR
#define SPIRAL_EMITTER_OPERATOR

#include "gmtl/Math.h"
#include "ani/Dynamics/Operator.h"
#include "ani/Dynamics/DynamicSystem.h"
#include "ani/Dynamics/operators/Emitter.h"

namespace ani
{

template<class __EntityType>
class SpiralEmitter : public Emitter<__EntityType>
{
public:
   typedef boost::shared_ptr<__EntityType> EntityTypePtr;

public:
   SpiralEmitter() : Emitter<__EntityType>(), x(0), velocitizer(0), pos( 0,0,0 ) {}
   virtual ~SpiralEmitter() {}
   void setPosition( float x, float y, float z )
   {
      pos.set( x, y, z );
   }   

   virtual void exec( DynamicSystem<__EntityType>& sys )
   {
      for (x += sys.timeDelta(); x > mRate; x -= mRate )
      {
         velocitizer += 0.75f * ps.timeDelta();
         if (velocitizer > 1.0f || velocitizer <= 0)
            velocitizer = 0.0f;
         EntityTypePtr p( new __EntityType );
         p->setMass( 1.0f ); // 1 kilogram
         gmtl::Vec3f velocity( gmtl::Math::sin( velocitizer * TWO_PI_F ) * 5.0f, 19.6f, gmtl::Math::cos( velocitizer * TWO_PI_F ) * 5.0f );
         gmtl::Vec4f color( 0.3f, 0.2f, 1.0f, 1.0f );
         p->setVelocity( velocity );
         p->setPosition( pos );
         p->setColor( color );
         p->setAgeOfDeath( 10 );
         sys.add( p );
      }

      if (x < 0) x = 0;
   }

   float x;
   float velocitizer;
   gmtl::Vec3f pos;
};


} // end namespace

#endif

---