Intrinsic parameters

[jean-michel_legoff]

I was wondering if it could be possible to use intrinsic parameters without creating them.

In a particular construction I want to get the length of an extrusion (for exemple) but without creating a parameter called "Lengh"

I want to keep this length dependant from other references.

I can't find any way to get this length as it is caculated intrinsecly in the extrude feature....

[g-andresen]

Hi,

Give an example of what you want to do.

günther

[jeff_strater]

not sure what you are asking here, but if you want the ability to create a parameter "on the fly" while creating an extrude, try using "length=30" syntax.  This creates a favorite model parameter with the name "length"

[davidSWEUU]

I don't know if this answers the question, but that is a great tip!!!

[jean-michel_legoff]

Hi,

Many Thanks but I known this.

What I want is to get the length of an edge which is depending of other references...

I want to use the Rectangular pattern tool.

in the distance field I need to enter a distance... but I don't know it.

I can on the fly measure the length of the long edge by selecting "measure" and the edge. But the value is taken only at that moment...

If I modify my rectangle by draging the short edge, the value don't update...

 distance is not really driven by the edge's length but is only computed on the fly.

[jean-michel_legoff]

could it be possible to save a measurement as an analysis and get this value in the parameter space?

[g-andresen]

Hi,

If I create a sketch and dimension it directly with the creation of favourite parameters, I can also access these in the rectangular pattern.

günther

[jean-michel_legoff]

Yes, I agree

But even if it is on the fly you have created the parameter "Length", so that length coul no more be edited interactively or defined by external references...

[jean-michel_legoff]

I mean if my sketch is driven by 2 components as the cube in this screenshot

the the length of the long edge is dependant of the space between the cubes...

and if the spece augment or reduce I want the sketch follows and rectangular pattern too.

this is a basic example.

[g-andresen]

Hi,

---

@jean-michel_legoff wrote:

created the parameter "Length", so that length coul no more be edited interactively or defined by external references...

---

.. no words

günther

[jean-michel_legoff]

yes but the result is the same,

you have created a parameter "Length_full" by numerical value, it's not the result of a referencing...

[TrippyLighting]

What @g-andresen is describing is referencing a driving dimension.

What @jean-michel_legoff is looking for is to reference a driven dimension. At this point that isn't possible. There is a heated thread about Fusion 360 current inability to reference driven dimensions, but I chose not to link to this here 😉

[barry9UDQ6]

How about you don't use rectangular pattern, but create each rectangle manually.

In my sketch below, the 2 lines highlighted in blue have an equal constraint, and are driven by the other dimensions?

[jean-michel_legoff]

OK, 

As I said it is a very simple case, and it is not representative of the final work, except that I shall have use a value which I can't drive but which will be always only driven by the model.

So In order to get a fully parametric model this value needs to update automatically.

But if it's not possible for now, OK, I shall continue to manage it by hand.

So I have better to ask a feature request apparently.

[TrippyLighting]

---

@jean-michel_legoff wrote:

So I have better to ask a feature request apparently.

---

No need to. I's been asked for fervently in the thread I did not link to 😉

[TheCADWhisperer]

You can use Driven Dimensions (reference dimensions) as parameters in Autodesk Inventor Professional (for more years than I can remember, but I suspect 10+ yrs).  So the folks across the hall at Autodesk are aware of the utility of this functionality.

[jean-michel_legoff]

Yes it looks like there are some cool features in Inventor that Fusion 360 didn't heritate... "yet",  I hope