Overriding an active scene

[Russ]

Hello everyone,
Is there a way to activate a scene, that will override the actions of another scene that is currently active?

I have multi LED moving heads that have pixel control. I want to be able to initiate pixel effects like rotating patterns based on LED's being switched off in sequence to create the rotating effect, which is easy enough to do with a sequence. However a sequence would require me to make a separate sequence for every colour I wanted to use that effect for.

So I had an idea to have buttons for the different colours, which are scenes that turn on all the LED's to the selected colour. Then I wanted to activate another set of scenes running in a chaser that would turn off various LED's in a sequence to form the rotating pattern. This way I only need one button to activate that pixel effect and it would work with whatever colour I currently have selected, as it centres on turning LED's off that are already all on in a colour decided by a currently running colour scene.

I tried this out but when I activate the second scene to turn off some of the LED's it does not override the currently active colour scene, does not turn off any of the LED's, they all stay on, as if the first scene has priority.

In short, why is one scene not overriding another scene when activated?

Thanks.

[MichelSliepenbeek]

In short, why is one scene not overriding another scene when activated?

Most likely this is because your RGB and Dimmer channels are set to HTP (you probably didn't do that on purpose, QLC+ defaults to HTP for those channels).
You might consider changing them to LTP.
I suggest to watch this video: https://youtu.be/Jj9YsHNQIXo?feature=shared
If you have 2 (or more) fixtures that are the same, you could also perform your own experiment: set up one to HTP the other to LTP and then start some of your functions and notice the difference.


Furthermore you could have a closer look at RGB Matrices.
If you use BlendMode = Mask, it will work with the levels and colors you did previously set with your scenes (or other Functions).
In this post https://www.qlcplus.org/forum/viewtopic ... 144#p71144 you will find examples of how you can use the Different Blend Modes of RGB Matrices (the Fixtures only have a White channel, but are set as LTP).

Finally you still have the option to run two RGB matrices with different Control Modes together (as advised before: https://www.qlcplus.org/forum/viewtopic ... 422#p74422 )

[Russ]

Thanks for your response, I am relatively new to QLC so I have no idea what HTP or LTP is but I'll follow your suggestions and links and see how I get on.

[MichelSliepenbeek]

Oops second link was not working. Corrected it.


HTP (Highest-Takes-Precedence) and LTP (Latest-Takes-Precedence) are terms used to define the output of a channel parameter that is receiving data from multiple sources (functions).

I personally prefer to use LTP for all of my fixtures, because it feels more natural to me.
I know a lot of people do not agree with me (it is not without a reason that QLC+ uses HTP as default for those channels).

I suggest you do the experiment (with 2 fixtures to notice the difference) and then make your own choice.

[Russ]

Hi Michel, Following your advice I now have the console working exactly as I need. Thanks again for your help on my posts.