fade particles

Hi!

Im new to touchdesigner so a newbie question. Im trying to get my particles to fade through a pattern and to merge it to send it to ChopTo alpha attribute scope but the alpha doesnt seem to fade?

Im just testing and sure there is a better way of doing this. How would you suggest to get my randomized particle rain to fade out?

The particles also turned black. not exactly sure why.

Thanks
particle fade.toe (12.3 KB)

Cutmod has some good tuts on working with particles and changing them over time:
cutmod.wixsite.com/portfolio/tutorials

I opened up your .toe file and looked around a bit. You should think about instancing your particles or using sprites.

This will give you a bit more control over how your particles look. In your case I would SOPto CHOP your particles and pull out the point attribute “Life”. This will give you the ability to apply a pattern to other attributes of you particles over their life time - such as changing color.

As far as your alpha not changing - make sure to set “Alpha-to-Coverage” on in your render top. That should allow you to set alpha in the way you are currently doing it.