Hopefully a simple one...

[Scott Nelson]

Hi All!

I have a simple "lighting chase" loop running in our cue.  At the end of the cue I'd like to fade out the lights to zero %, but keep the "chase effect" of alternating the colours running whilst this happens.

Possible??  I've attached a workspace of the simple chase I'm using...

Thanks in advance!

Scott

[micpool]

I don’t think this is possible, which doesn’t mean its not!. I keep a test  workspace with exactly this problem as an example of just about the only   common requirement, that I cannot think of any solution to,  and return to it occasionally to see if I’ve missed  something.

If someone has solved this I would love to know too.

Mic

[Sam Kusnetz]

Hello Scott

You can’t really do it with the sort of light that you’re using now, but if you switch to a light that has an intensity channel that’s separate from the color channels, you can do it like this:

Cue 1 - Group cue in "start first go next” mode

• 1.1 Light cue with “myLight.red = 100, myLight.blue = 0", no collation, auto-follow
• 1.2 Light cue with “myLight.red = 0, myLight.blue = 100”, no collation, auto-folllow
• 1.3 Start cue targeting cue 1.1

Set the durations of 1.1 and 1.2 to 0, and set their post-wait time to taste. Cue 1 will run as a loop, alternating the light between red and blue, but leaving the intensity parameter alone.

Cue 2 - Light cue with “light.intensity = 100” and a duration of your choosing.

Cue 3 - Light cue with “light.intensity = 0” and a duration of your choosing.

First run cue 1, then run cue 2 to fade up the intensity while the color loop is happening. Then run cue 3 to fade out the intensity.

Best

Sam

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Sam Kusnetz (he/him) | Figure 53

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[micpool]

To clarify, my test workspace is just a simple  3 way chase.

And I've just remembered I did find a solution to this, although it is a bit unconventional. It uses video syphoned to an app that samples the brightness at 3 different points on the image and translates that to 3  /dashboard/setLight OSC messages which can drive QLab lighting groups (or individual channels)

You can fade the video in and out and change its speed  and the lighting chase follows. The app can be adapted for any number of chase ways or as a grid for full color video to Lighting pixel mapping, although the OSC message rate gets a bit intense.

Screen recording of a simple 3 way chase attached. Syphon recorder window shows the video output. 3 Lights window shows the output to 3 Lights.

Mic

[micpool]

My original experiment,  over 3 years ago, used  Quartz composer and Osculator.

Thread here.

https://groups.google.com/g/qlab/c/e84jtrHIkWQ/m/-GLenJHkBgAJ

Mic