Back to Blog

Age in a Group

Simulation Tip

⏱️ Counts for how long a point has been in a group.

1. Concept

💡 Increment a counter to track how long a point has been in a group

2. Execution

🔧 1. Create a point group 2. Append a Solver 3. Initialize a count value

if (@Frame ==1 ) {
    if (@group_toMesh == 1) i@count = 1;
    else @count = 0;
    }

🔧 3. Increment count

int value = point(1, 'count', @ptnum);

if (value > 0) @group_toMesh = 1;

if (@group_toMesh == 0) @count = 0;
else i@count = 1 + value;

🎁 Bonus: Points will never leave the group once added.

Houdini node setup for age in a group