Confusion with PF_Cmd_SEQUENCE_FLATTEN command.

Question

Hi,

I'm very confused with PF_Cmd_SEQUENCE_FLATTEN command. In the documentation it's mentioned that this is sent when saving and duplicating a sequence. When I duplicate my custom effect FLATTEN is sent. But my confusion here is this command is sent for the old effect which is being duplicated or for new duplicated effect?

Please consider what I'm doing. Please let me know in case the explanation is not enough:

I store an int in the sequence data. And for each effect i keep incrementing it.

1. I add a layer. Then I add 2 custom effects with sequence data 1 & 2 respectively.

2. Now I duplicate the layer. PF_Cmd_SEQUENCE_FLATTEN command is sent. I increment the sequence data. It's called two times for 2 custom effects. Data is 3 & 4 respectively for 2 new duplicated effects.

But the problem is that now the effects in the first layer and the second layer, both have same sequence data. i.e. 3 & 4 respectively and not 1, 2, 3 & 4.

This can happen if the FLATTEN command is sent to the old effect before duplicating. This is my guess as both the layer effects have updated IDs.

Any ideas?

Thanks,

Dheeraj.

shachar carmi · Accepted Answer

sooo...during the FALTTEN event the effect stores some data about itself:i am effect #3 on layerID 1024 in comp itemID 17.during the UNFLATTEN commnad the effect checks who he is.if he is effect #3 on layerID 1024 on comp itemID 17,then it must mean it's the old effect.if any of the data is different, it means it's the new effect.there is the possibility that the UNFLATTEN commnad happenes before the effect has it's own new effectRefH,so you might want to wait with that check until the first updateParamsUI call.

shachar carmi · Answer

yes, the FLATTEN command is sent to the old effect.

that's how it should be.

it tells the effect to collect all it's data and prepare it for storing. (something the new effect doesn't need to do)

both the old and the new effects get the UNFLATTEN command,

but only the pre-exsiting one gets the FLATTEN call.

if you need to tell the old effect from the new, you have to store some identification of the old effect in the way we've discussed before.

during unflatening you should check if it's the old effect or the new one, and act accordingly.

Sign up

To post, reply, or follow discussions, please sign in with your Adobe ID.

Sign in to Adobe Community

To post, reply, or follow discussions, please sign in with your Adobe ID.

Scanning file for viruses.

This file cannot be downloaded