Ogre 3D 1.7

Time for action — using a ring to emit particles

Instead of a point or box we can even use a ring as emitter.

1. Change the emitter type to Ring:

   emitter Ring
   {
   

2. Define the Ring using width and height:

   height 50
   width 50
   

3. Now, to create a ring and not a circle, we need to define how much of the inner part shouldn't emit particles. Here we use percentages:

   inner_height 0.9
   inner_width 0.9
   

4. The rest stays untouched, as follows:

   emission_rate 50
   direction 0 1 0
   velocity 20
   }
   

5. Compile and run the application. Fly with the camera over the model instance and you should see where the ring emits particles.
   

What just happened?

We used the ring emitter to only emit particles ...