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Author Topic: Progressive lateral slope along a spline  (Read 589 times)

JEA

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Progressive lateral slope along a spline
« on: January 28, 2019, 12:07:01 PM »
Hi, i was using the standard railclone patern to build a railroad along a spline but now i am struggling on how i could insert a progressive lateral slope in the curves.

I feel that i need to add a Y rotation in the transform, but i want to apply this rotation :
- only in the curves ( this should be done with limits start / end )
- with a progressive ( starting with 0 and going to max value with a distance parameter)

Trying to be clearer, for now my spline describes straight and curved sections of a railroad (see attached file). I have to add a 16cm elevation between right and left rails in the curves. This elevation must be added on a defined distance ( i dont know it yet, but lets say 100m).

Can you help me with this please ?

« Last Edit: January 28, 2019, 12:20:47 PM by JEA »

Rokas

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Re: Progressive lateral slope along a spline
« Reply #1 on: January 28, 2019, 12:24:41 PM »
Please attach Your current style and explain where You struggle.
Rokas
iToo Software

JEA

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Re: Progressive lateral slope along a spline
« Reply #2 on: January 28, 2019, 01:47:18 PM »
I started looking at this https://forum.itoosoft.com/railclone-pro-(*)/transform-segment-along-a-spline/ and tried to adapt it to rotation instead of scale but ... nope. And so far, i was trying to understand the "expression" panel using this example.

Anyway, back to your question here is my status.

Rokas

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Re: Progressive lateral slope along a spline
« Reply #3 on: January 28, 2019, 01:48:40 PM »
Could You please attach maxfile?
Rokas
iToo Software

JEA

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Re: Progressive lateral slope along a spline
« Reply #4 on: January 28, 2019, 01:55:29 PM »
Sure.

Rokas

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Re: Progressive lateral slope along a spline
« Reply #5 on: January 28, 2019, 02:38:27 PM »
Hi I attach You alternative method. Hope this works better for You.
You can visually adjust banking angle adjusting vertices along the spline:

Rokas
iToo Software

JEA

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Re: Progressive lateral slope along a spline
« Reply #6 on: January 28, 2019, 02:53:43 PM »
Seems to do the job quite well :)

Thank you.