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How to setup a handle for creating a curve in an HDA

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Hello dear community,

I'd like to build a simple HDA that lets me build a street from a curve. I'd like to have it configured in a way, that I get the same controls as we get for the Curve-Shelftool. I already found a handle called "curvepointoptions" which only lets me modify existing points. However, what I am trying to do, is to start from a blank state with all the options. Can anybody tell me how to properly setup such a tool? I already dug into the documentation, but I still can't make any sense of it.

All the best,


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If your objective is to ask for user input for them to add points on the window. I feel you are complicating your task a lot, better to create a tool that receives a curve from the user and let the user create this curve however they want, then your street will be built according to that curve.

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