How to Scale on one dimension

[rasheed]

Using the .cfg file.

Trying to test something

[Jahulath]

You do it like this:

// --- asset parameters ---

MODEL

{

model = JonzCo/JonzCo_Fuel/jzfueltank

position = 0.0, 0.0, 0.0

scale = 0.6, 0.6, 0.6

rotation = 0, 0, 0

}

I haven't played with position or rotation but I can tell you that while scale X, Y, Z will work and will work in 1 dimension, you will need to play them about a bit because it isn't 100% one dimensional, more like 80/20...

[Greys]

It's not so simple as that unfortunately.

There is a glitch that exists between MODEL{scale}, PART{scale}, and PART{rescaleFactor}

assuming:

PART{
  MODEL{
    scale = X[sub]1[/sub], X[sub]2[/sub], X[sub]3[/sub]
  }
  scale = Y
  rescaleFactor = Z
}

Y is always the same value.

and F is the actual scale that you end up with (F_n where necessary)

F=Z if X=1/Z

This is simple to follow but doesn't allow for X₁!=X₂!=X₃ so it can only be used for uniform scaling

Alternatively, if Z=1 then X_n=√F_n, or X=1 then Z=√F, but there's no advantage to the X=1 method

So say you want a part to be F=2, then you'd want X=0.5 and Z=2, keeping it nice and simple

But if you want to make a part that is twice as long but the normal width (F₁=1, F₂=2, F₃=1), then you want Z=1, X₁=1, X₂=1.4142135623730950488016887242097, X₃=1

putting that back into the code

PART{
  MODEL{
    scale = 1, 1.4142135623730950488016887242097, 1
  }
  scale = 1
  rescaleFactor = 1
}

Obviously this is a bit problematic because as far as I can tell square root 2 goes on forever so exact sizing is effectively impossible, but you can get pretty close.

[WinkAllKerb'']

It's not so simple as that unfortunately.

There is a glitch that exists between MODEL{scale}, PART{scale}, and PART{rescaleFactor}

It all depend both from "3dmodel tool" unit & scaling + unity scaling before the .mu you want to work with have been exported. Depending how the part has been initiailly made regarding this you can quickly get the multiplier/divider for {model ... scale = x,y,z ... } the way you want

Edited September 29, 2013 by WinkAllKerb''

[Greys]

The 3D model's scaling is entirely unimportant as it is handled by PART{scale} and will not vary, this is entirely an interaction between PART{MODEL{scale}} and PART{rescaleFactor}, where PART{scale} serves to convert the model's native unit into meters.