Family - with Dynamic array that expands with parameter dimensions

[Anonymous]

Short version - 

I'm creating a massing Family with grips - to extend the width and length. 

I'd like "model lines" to act as Grid lines to populate inside automatically on a defined dimension. (50' for example) 

I'd like an array function to be associated to the overall lenght / width of the building and fill in the "model lines" while it stretches.

So - instead of telling the array to give me X equally spaced lines... I want the array to fill in a line with items at 50'. 

This would be more like how a stair adds treads... the length of the stair may chance, but the treads maintain an equal spacing. 

[ToanDN]

Massing family?  The function is already built-in with Divided path.

For other types of famile: http://therevitkid.blogspot.com/2009/03/tutorial-parametric-arrays.html

[barthbradley]

So you want to array model lines in the x and y direction on placement in the project, by manually stretching the array in both directions?  Yes? 

[ToanDN]

Here is an example of a grid using a divided surface from a mass.  This one is to be placed by picking 2 corners but if you want to pick one corner and set the overall XY distance it can be done with little modification to the family.  The grid spacing are parametric and can be entered from the properties .

https://knowledge.autodesk.com/community/screencast/65f7c6fd-78ec-4540-bc97-40e618f4adbe

[Anonymous]

yes - pretty much