Full Version: Elephant Repository

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<< What version do you use ?
Last version of James & V 4 beta

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Hello Brian, Hello Wayne,

it's difficult to say what happens. I think that internally a transformation matrix is used for this operation/factory. To create one, you need additional informations like the rotational information that are not given by two lines and certainly not when they are parallel. I had the same problem for the getCrvSFrame. The only info you have here is the direction/tangent of the curve. To create a frame/local coordinate system I used the dominant directions of the main coordinate system. That leads to some weired effects while changing the curves geometry -> flipping axes. Another method would be to use also the center of a soothing circle, but that would fail for straight lines. And yes - it is similar to the gimbal lock. A possible workarround is to add tiny values for the display of the vector - that helps the factory to calculate the orientation.

Maybe Michael can tell us what's going on under the bonnet.

A nice day to all
Karsten

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Extention's Nodes
Vector Section
VecMagn Node
English
https://moiscript.weebly.com/vector.html#vecmagn

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Possibly relevant are Michael's posts here:
https://moi3d.com/forum/index.php?webtag=MOI&msg=9864.5
- Brian

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Hi Karsten,

re:
> but it seems that here is a problem - orientlinetoline generates weired results (tested with MoI V3) when the
> target has the same orientation as the start orientation especially in the main directions. After the factory is
> initialised and get other inputs (not in the main dirs) everything works fine as espected. Maybe Michael have a look.

It looks like a bug in orient line to line, part of how it works is it takes the cross product between the 2 directions to make a vector to rotate around but it is not handling the case well when the 2 directions are parallel when the cross product is undefined. I'll investigate to see if I can fix up that case.

- Michael

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Extention's Nodes
Vector Section
Frame by Vectors Node
English
https://moiscript.weebly.com/vector.html#framebyvecs

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I don't know how works ColorVec ? (and if it's terminated)

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Hello Pilou,
at first - great job.
ColorVec only make sense for a bundle of vectors - then it colors the vectors dependent of their length.
Nothing more.

A nice day to all
Karsten

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So color are randomly following the length or that goes from cold to warm or other ...?

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Hello Pilou,
from blue (short) to red (long).
You can also generate vector fields:-)




Have a nice day
Karsten

Attachments:
colorvec.nod
cv2.nod

Image Attachments:
colorvec.png  cv2.png 

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Hello Michael,

thank you for the detailed information. I will have a look to change the code to avoid this factory.

Have a nice day
Karsten

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@Kasten
Perfect! That will closed in Fireworks the Vector Section!

The berturbating was the "Left Output" of the Color Node:)

I suppose i can take your example for the Repository?

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Yep!

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@ Karsten You don't use the 1.0 Node editor ???

Cool!
So

Extention's Nodes
Vector Section
Colorvec Node
English
https://moiscript.weebly.com/vector.html#colorvec

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Hi,

I gather you are developing things to enhance the node editor?

If so are they enhancements we can add to our node editor and, if so, how do we do that?

Thank you.

Frederick

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Hello Frederick,
it's a while ago that I wrote new nodes. But from time to time I have a look to the forum and I answer questions if possible for me.
At the moment Wayne picked up the ball and is making a great job to extend the NE. James not only shows with impessive things what is possible, he also manage the extensions for the NE.
So is the package from James a good starting point.

Have a nice day
Karsten

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Hi,

Thanks for the clarification.

Frederick

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Hi Pilou,

I saw your Elephant plugin. Could you tell me what GUI library are you using and how did you connect the plugin with Moi. I started learning programming 2-3 years ago with Rhino 3D and it so interesting.

Andras

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Hi Andras, some information here:
https://moi3d.com/wiki/Nodeeditor

- Michael

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Hello Andras
It's not my plugin! ;)
It's Max Smirnov plugin!
I have just listed the functions nodes and try to explain all that i understand! :)
It's for that some few are empty for the moment!

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