Colouring points by distance from a plane in Autocad

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dagenhamdave4
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Colouring points by distance from a plane in Autocad

Post by dagenhamdave4 »

I don't know if anyone out there can help with this one but is there a way to apply a shader (much like the shade by elevation function) to point cloud data in Autocad based on the current UCS? To elucidate; I need to draw an elevation and to bring out the fine ornate detail I'd like to colour the data based on its range from the current plane I'm working on, however Recap only recognises the world UCS as the basis for shading by elevation. Is there a way to force Recap to ignore the world UCS and treat the current plane as the reference surface for colouring by range?

This probably isn't the clearest question ever posed, but if someone has any ideas they'd be much appreciated!
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Re: Colouring points by distance from a plane in Autocad

Post by CWickersham »

If I read your question right, I think this is the option you are looking for:
http://imgur.com/a/PcaU5
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dagenhamdave4
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Re: Colouring points by distance from a plane in Autocad

Post by dagenhamdave4 »

Caleb,

Thanks for your response - do you know if it's possible to do that from a vertical plane defined in AutoCAD, so that your ramp stretches horizontally away from the plane? I'd like to trick AutoCAD into thinking the up direction is perpendicular to where it normally is, as it were... I might not have been that clear in my question!
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Re: Colouring points by distance from a plane in Autocad

Post by Phil Marsh »

Do you have cyclone? If so you can export the cloud with the Z+Y axis flipped then take this into Recap.
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Re: Colouring points by distance from a plane in Autocad

Post by dagenhamdave4 »

That's a good shout Phil, looking at acquiring cyclone so that might be the best option in the future. Cheers
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Re: Colouring points by distance from a plane in Autocad

Post by Ryan »

If AutoCAD can shade by elevation, you could probably do this by adjusting the coordinate system in ReCap (using the 'Update Origin' tool). It allows you to set a UCS based on a picked point (origin) and two planes (X and Z). You can adjust any or all of the three to set 'up' however you'd like. Might be a workaround.

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Re: Colouring points by distance from a plane in Autocad

Post by dagenhamdave4 »

Ryan, I presume that when you export as either RCP or RCS for inserting into autocad this change is maintained? Thanks for your input, much appreciated.

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Re: Colouring points by distance from a plane in Autocad

Post by Tanguy Nédélec »

In AutoCAD the elevation shading can only be applied along the world UCS Z axis. You can rotate the point cloud itself to get what you want. No need to do it in Recap, you can do it in AutoCAD directly.
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Re: Colouring points by distance from a plane in Autocad

Post by 3DForensics »

Why not just do it in CloudCompare and then export the coloured point cloud from there?


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Re: Colouring points by distance from a plane in Autocad

Post by Least »

or do it on the fly with Undet in AutoCAD
https://youtu.be/QvnCq47JMPs?t=35
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