Get an array of closests primitives from a point

[DeBrumaire]

Hi ! Just like in the title, I need to find all the nearests primitives from a point and put them into an array ! I tried with the "xyzdist" fuction and other techniques but still doesn't work :"/ 

Do you guys have an idea on how to solve this ?

Thank you all !

[animatrix]

Hi,

You can write something like this in a Primitive Wrangle:

float dist = ch("dist");
dist *= dist;

vector p = point ( 1, "P", 0 );
if ( distance2 ( @P, p ) < dist )
    i@group_near = 1;

[konstantin magnus]

.. and use expandprimgroup() to create an array.

[DeBrumaire]

Haha thank you two for your answers !

[animatrix]

FYI the above approach I showed is naive, meant for one-off usage. But if you want max performance, I would recommend creating points to represent primitives and use pcfind instead and using this only include those primitives in the group, which would be much faster.

[konstantin magnus]

.. perhaps like so:

array_near_prims.hipnc