Particle Animator Opacity

Question

I'm currently going through the 3D Platform Tutorial project posted on Unity's website here: http://unity3d.com/support/resources/tutorials/3d-platform-game

On page 24 of the tutorial PDF, there is a reference made to setting opacity and alpha in the Particle Animator component.

Here's a direct quote of the tutorial:

The Opacity setting modifies the Alpha channel of the particle, defining how transparent it is. The particle material we use already includes alpha channel information, which is then modified further by the Opacity setting.

Using Unity 2.6.1f3, I checked the Particle Animator Component. No reference to Opacity is made. There is only an alpha slider Also checking the Unity online documentation ( http://unity3d.com/support/documentation/Components/class-ParticleAnimator.html ), there is no reference to Opacity.

Does anyone know what the problem is? I wonder if this is a version issue... Maybe the tutorial was made with a different version of Unity than what I'm currently running and the opacity slider was removed in that other version.

Thanks, TheSleeve

Answer 1

Answer by TheSleeve · Sep 11, 2010 at 02:30 PM

Ahhh, I think I see what's going on. It looks like perhaps in older versions (use to make the tutorial, perhaps?) there was an opacity slider from 0 to 100, which essentially just modified the alpha value. In the version I'm using, I think it's simply been replaced by an alpha slider from 0 to 255.

In the end, they're essentially doing the same thing, right?

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Answer 2

Answer by Julian-Glenn · Sep 11, 2010 at 03:52 PM

The Alpha/Opacity slider is from 0%-100% Or in a shader it's written like 0.1 to 1 Like: _Color ("Main Color", Color) = (1,0.5,0.5,1) which equates to:(red=100% green=50% blue=50% alpha=100%).

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Particle Animator Opacity

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