Updating particle system color in Update()

Unity Engine
1

I need to change the alpha component of the color of my particles depending upon the angle the scene is being looked at.

In my Update() method, I calculate the angle, create a new color and then call

thinDiskParticleRenderer.material.SetColor (“_TintColor”, thinDiskColor);

This seems to have no effect.

The material does have a TintColor.

6646066--758980--ThinDiskMaterialSettings.jpg
6646066--758980--ThinDiskMaterialSettings.jpg850×800 78.8 KB

Can anyone tell me why this isn’t working?

Thanks.

2

After some further experimenting, maybe I’m using the wrong name for the color?

If I do:

var oldColor = thinDiskParticleRenderer.material.GetColor(“_TintColor”);

The oldColor has 0 for all 4 components (which is not right).

3

I figured it out. Apparently the color name I want is “_Color” event though it is called “Tint” in the UI. Looks like you can set it using either:

thinDiskParticleRenderer.material.color = thinDiskColor;
or
thinDiskParticleRenderer.material.SetColor (“_Color”, thinDiskColor);