We are now going to introduce more colors by using particle affectors.
emitter Point { emission_rate 30 direction 1 0 0 velocity 20 time_to_live 4 }
affector ColorFader2 { red1 -1 green1 -1 blue1 -1
state_change 2 red2 +1 green2 +1 blue2 +1 }
We used the ColorFader2
affector. This affector first changed each particle with the given values for red1, green1
, and blue1
, when the particle only had the number of seconds given as the state_change
parameter to live. Values such as red2, green2, and blue2 were used to modify the particles until they died. In this example, we used this affector to first change the particle from white to black and then when it is two seconds away from dying, we changed the black to white, hence creating the effect seen in the preceding image.
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