How to update width and depth without affect other setting

[ffbh]

my hexagonal is like the picture shows.

I only want to update the width and depth at runtime, but after I call SetDimensions(35, 20, 2.56f) it looks like this

the Hexagon Diameter and the value of Bottom Left got changed too

[ffbh]

What I’m doing is setting the (0, 0) in tilemap position to (0, 0) in A* map position by using the Bottom Left, At runtime I will calculate the position of the right-upper position of A* map, which is the value of width and depth, and this is the minimal A* map size which covers the full tilemap exactly.
I have directly set the width and depth in the inspector and it works, but the size of my tilemap is dynamic so I have to do it at runtime.

[aron_granberg]

Hi

The hexagon diameter is in fact not the same value as the internal node size field.
Instead try SetDimensions(width, heigth, graph.nodeSize).

See also GridGraph - A* Pathfinding Project

[ffbh]

Yeah, the Hexagon Diameter is correct after using SetDimensions(width, heigth, graph.nodeSize)
but the position of Y in Bottom Left is changed to 9.920002, which should be 0.3200033

[aron_granberg]

Ah. Yeah, the internal reference for the graph is always in the center.
You can adjust the bottom left using:

var currentBottomLeft = graph.CalculateTransform().Transform(Vector3.zero);
grid.SetDimensions(...);
var newBottomLeft = graph.CalculateTransform().Transform(Vector3.zero);
// Adjust the grid back to the original bottom-left coordinate
grid.center += currentBottomLeft - newBottomLeft;
grid.UpdateTransform();

I think that should work.

[ffbh]

Yeah, works perfectly.
thanks