Phoenix FD fire workaround only works with first simulation

[lightwriter]

Hi there!

I know that Chaos Vantage is currently not compatible with Phoenix FD, so I followed this workaround: 3Ds Max - VANTAGE Tutorial | "How to render Phoenix FIRE simulations in Chaos VANTAGE" - YouTube, mentioned in Render Fire Animation using Vantage - Chaos Forums

The first simulation workaround worked just fine. However, I have two candle flames, and when trying to display the second flame simulation as mesh, nothing shows in Vantage.

Edit: If I copy (not instance) the first flame, it works. However, the second flame has the same setup as the first flame, which makes all the scene look fake. What parameters should I change in order to have a second, different flame?

Software:

- 3ds Max 2024 26.0.0.940

- Chaos Phoenix 5 ADV 5.20.00

- V-ray 6 update 2 (6.20.03)

- Chaos Vantage 2.6.1

[tashko.zashev]

Hi,

Instancing or Copy the Phoenix grid should work in this case and all duplicates should be visible in Vantage. Attached a screenshot of one quick test.
I'm not sure why it doesn't appear in your file, could be something specific to your scene. If you send the project file to https://support.chaos.com/hc/en-us/requests/new we can have a look.

. What parameters should I change in order to have a second, different flame?

You can use the controls from > Input > Timeline origin or Cache Origin parameters to add variations in the animation frames between the copies. Added another image for this.

[lightwriter]

Hi,

Instancing or Copy the Phoenix grid should work in this case and all duplicates should be visible in Vantage. Attached a screenshot of one quick test.
I'm not sure why it doesn't appear in your file, could be something specific to your scene. If you send the project file to https://support.chaos.com/hc/en-us/requests/new we can have a look.


You can use the controls from > Input > Timeline origin or Cache Origin parameters to add variations in the animation frames between the copies. Added another image for this.

I copied the Phoenix grid and it worked, thanks! It wasn't showing when I was simulating the second candle after having simulated the first one; I don't know if that's a limitation or a bug...

Regarding the Timeline origin or Cache Origin parameters, I'll try them tomorrow and let you know if that worked in order to differentiate one flame from the other.

[tashko.zashev]

Good to hear that you managed to get it working now.
I see two possible issues with this setup, one is that the Phoenix Source should have the geometry from the Instanced components added in the list. It will not be added automatically after the instancing....
and the Output filed automatically changes to another path script in order to support the duplicated grids and the difference is the Simulator's name.

[lightwriter]

tashko.zashev

I tried to change the Timeline Origin and Cache Origin on the simulation that I copied. You can see the results in the attached video.

If I understand correctly, when I change the Timeline Origin I delay the beginning of the simulation, since when it reaches the 40 frame mark the flame slowly grows from nothing, right?
The Cache Origin is making me dumbfounded, since the flame is visible until the frame 60, and then suddenly it ceases to exist.

Regarding your last post, I couldn't make sense of what you were trying to say, sorry...

[tashko.zashev]

The timeline origin and cache origin can be useful if you want to move your simulation into a specific frame, add a delay and make it different from a copied simulation frames, e.t.c. You see how they work in details here:
https://docs.chaos.com/display/PHX4M...TimelineOrigin
Your simulation is quite short and using a value of 40 will leave you with no flame for part of the time line. Try small values - minus 5 or plus 5.
If you are not happy with this result, you can always make a new simulation for the second simulator.