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Updated tutorial_particles_2d (markdown)

reduz 2014-11-04 10:53:43 -08:00
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tutorial_particles_2d.md

@ -77,3 +77,21 @@ If this acceleration is positive, particles are accelerated away from the center
This acceleration will use the tangent vector to the center. Combined with Radial Acceleration can do nice effects.
<p align="center"><img src="images/paranim9.gif"></p>
#### Damping
Damping applies friction to the particles, forcing them to stop. It is specially useful for sparks or explosions, which usually begin with a high linear velocity and then stop as they fade.
<p align="center"><img src="images/paranim10.gif"></p>
#### Initial Angle
Determines the intial angle of the particle (in degress). This parameter is mostly useful randomized.
<p align="center"><img src="images/paranim11.gif"></p>
#### Initial & Final Size
Determines the intial and final scales of the particle.
<p align="center"><img src="images/paranim12.gif"></p>