Particle alembic point cloud, read detail attributes

[Orsonorix]

Hello to all,

I get alembic with point cloud, and age of particles is stored in detail attributes. I cant read correct attribute to corresponding point. I can read only first value. It's hard for me  to explain this problem but it is obvious if you open attached scene file. Hope someone knows how to solve this.

Thanks

Pc_Particles.zip

[nuki]

hey rafal, your detail attribute is an array of floats. when you bind it to a float attribute only the first value will be read. you can just replace the code in your wrangle with:
 

float age[] = detail(0,"_age");
f@age = age[@ptnum];

note the square brackets which indicate we want to create an array of the specified type. a (valid) index of the array can be read with var[index]. in this case its @ptnum to fetch the corresponding value (assuming the array is ordered by point numbers).

Edited November 28, 2020 by nuki