Raindrops Particle System
Hernan Amiune has created this simple raindrop canvas demo which he has nicknamed “Javascript Particle System Hello World”.

Raindrops keep falling on my head
Comments from the author:
This is a very simple example to demonstrate how to create a basic object oriented particle system using javascript and the html canvas element… Each particle has the following properties:
- position: the postion in the space, (x,y) coordinates
- velocity: the velocity of the particle, (vx,vy) vector
- life: the amount of time the particle is going to live
- time: the time elapsed since the particle was created



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